hajdar sadiku | University of Prishtina (original) (raw)
Papers by hajdar sadiku
Journal of Civil Engineering and Architecture, 2014
International Journal of Advanced Engineering Research and Science, 2017
In Kosovo as well as in many countries of the world have occurred explosions in objects, so this ... more In Kosovo as well as in many countries of the world have occurred explosions in objects, so this research have addressed the ways and possibilities of protecting the buildings by using their position as construction and design elements' after you load resisted by explosions. This paper presents basic information on the approaches for the evaluation of the blast effects on the structures. Motivation for the present study is recent events happening in the World where more and more structures are being destroyed by unexpected explosions in the urban areas. Intension of this investigation is to present basic information on what will happen when an explosive device is detonated. Some of the methods to calculate blast loads are presented. At the end it is presented simple method of designing a reinforced concrete wall barrier subject to a blast load caused by vehicle bomb. Calculation has been carried based on the kinetic energy that is delivered on the surface of the wall and that energy dissipation by the wall to resist such impulse load.
Development trends for high rise constructions, modern skyscrapers are indicating that building o... more Development trends for high rise constructions, modern skyscrapers are indicating that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross section of concrete elements. Solution for such construction is self-compacted concrete because of ability to fill good formworks without compaction and vibration. In this line, we conducted an experimental research to determine the mechanical characteristics of concrete, cracks, strains, deflections, strains on long term process and strains at failure test. The experimentally-obtained results will be presented for both types of concrete for: compression strength, splitting tensile strength, strains on concrete and strains on reinforcement for duration failure testing time t = 40 days. .
Second International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2015, 2015
Development trends for high rise Building or structures, modern skyscrapers request the different... more Development trends for high rise Building or structures, modern skyscrapers request the different workability of fresh concrete to cast in properly way and to achieve the requested results. The many of factors such are: highest of the cast concrete, sections of concrete elements, request the concrete with more plasticity and higher class of consistency, the smaller size of aggregate, the compacted process, etc. The fulfilling the previous condition, using the Self Compacted Concrete is one of the aims in this paper. Considering this fact, researches for deflections, mechanical characteristics of concrete and strains have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of self-compacted concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity and deflections tests for duration testing time t=40 days.
Concrete is a material which has found a wide usage in engineering especially in construction eng... more Concrete is a material which has found a wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of selfcompacting concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity, compression str...
EngRN: Structural Engineering (Topic), 2020
Based on the very good properties for putting on the work of self-compacting concrete, today in t... more Based on the very good properties for putting on the work of self-compacting concrete, today in the world has increased its use in the construction of high-rise buildings. Self-compacting concrete has very good viscosity which makes it suitable for pumping and at the same time compacting.<br><br>Based on the fact that self-compacting concrete does not have the same content of its constituent components as normal concrete, then we can say that both mechanical characteristics and deformations in concrete as in the short time process as well as deformations in the long process can not be same.<br><br>To verify the difference in the results of the information from the action of loads in the short time process as well as from the action of loads in the long process we conducted an experiment on beams from normal concrete, beams from self-compacting concrete and beams repaired with self-compacting concrete.<br><br>To determine the mechanical characteris...
Journal of International Environmental Application and Science, 2015
Received January 12, 2015; Accepted May 21, 2015 Abstract: Concrete is material which has wide us... more Received January 12, 2015; Accepted May 21, 2015 Abstract: Concrete is material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicates for high rise constructions, modern skyscrapers that is impossible building of such constructions with conventional concretes and low consistency, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact constantly worldwide are conducted researches for mechanical characteristics of concrete, deflections, stress and strains, in this line we made a experimental research for determining of shrinkage strains on beams of selfcompacted concrete comparing them with conventional concrete. Results obtained experimentally will be presented for both types of c...
Journal of International Environmental Application and Science, 2015
Received January 12, 2015; Accepted May 20, 2015 Abstract: Concrete is a material which has wide ... more Received January 12, 2015; Accepted May 20, 2015 Abstract: Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicate for high rise constructions, modern skyscrapers that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements. The solution for such construction is the selfcompacted concrete because of its ability to fill pores without compaction and vibration. Considering this fact researches for deflections, mechanical characteristics of concrete and deformations are worldwide constantly conducted. In this line an experimental research for determining of deflections on beams of self-compacted concrete comparing them with normal concretes made. Results obtained experimentally will be presented for both types of concrete f...
Development trends for high rise constructions, modern skyscrapers indicate that building such co... more Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of self-compacting concrete and compared it with theoretical results on the middle of beam on long term process.
WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT
Road network organizations should recognize quality firstly as part of business competitiveness. ... more Road network organizations should recognize quality firstly as part of business competitiveness. Road network infrastructure in general are damaged due to lack of proper maintenance and lack of investments by the Governments. The growing importance of the quality question in road network organizations has led many executives to modify their business and quality policies. Quality Management System helps to enable this evolution through a combination of “soft” non-technological (culture, habits, management and leadership approach) and “hard” technological changes that can yield substantial quality and environmental improvements. The quality challenge must be a major source of managerial change. The article focuses on the need for new approaches in the quality management of organizations and describes the quality management process which organizations could exemplify for road network organizations. We develop a general model of quality management in road network which is presented at t...
2012 UBT International Conference
Concrete is a material which has wide usage in engineering especially in construction engineering... more Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact, researches for deflections, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of selfcompacted concrete and compared it with conventional concrete. The experimentally-obtained results will be presented for both types of concrete for: module of elasticity and deflections tests for duration testing time t=40 days.
International Journal of Advanced Engineering Research and Science
The latest developments of construction of high rise buildings like skyscrapers and different tow... more The latest developments of construction of high rise buildings like skyscrapers and different towers indicate that building such constructions with conventional concrete of low consistency is impossible due to the hard concreting process, mounting/demounting of scaffolding and the duration of concrete curing. Lately the most widely used material for construction of special buildings is selfcompacting concrete because of the ability to fill entire section of formworks without compaction and vibration and better homogeneity between concrete and reinforcement. With massive usage of Self Compacted Concrete (SCC) in special buildings, series of researches are conducted all over the world analyzing cracks, mechanical characteristics and deformations of SCC. These researches shows that calculation of concrete elements with normal concrete do not give adequate results according to EC2 because of the concrete class consistency and amount of reinforcement in the cross section. The SCC as raw material provides better results in term of concrete consistency gives better cross section homogeneity and it is vibration free. However SCC concrete cracks, deformations, creep, deflections are different than normal concrete and as such must be calculated and analyzed before application. In this paperwork we have presented calculation of cracks on long term process of SCC beam element after period of t=400 days from concreting and comparison of results with the theoretical ones in line with Eurocode 2 (EC2) requirements.
International Journal of Advanced Engineering Research and Science, 2017
The latest developments of construction of high rise buildings like skyscrapers and different tow... more The latest developments of construction of high rise buildings like skyscrapers and different towers indicate that building such constructions with conventional concrete of low consistency is impossible due to the hard concreting process, mounting/demounting of scaffolding and the duration of concrete curing. Lately the most widely used material for construction of special buildings is selfcompacting concrete because of the ability to fill entire section of formworks without compaction and vibration and better homogeneity between concrete and reinforcement. With massive usage of Self Compacted Concrete (SCC) in special buildings, series of researches are conducted all over the world analyzing cracks, mechanical characteristics and deformations of SCC. These researches shows that calculation of concrete elements with normal concrete do not give adequate results according to EC2 because of the concrete class consistency and amount of reinforcement in the cross section. The SCC as raw material provides better results in term of concrete consistency gives better cross section homogeneity and it is vibration free. However SCC concrete cracks, deformations, creep, deflections are different than normal concrete and as such must be calculated and analyzed before application. In this paperwork we have presented calculation of cracks on long term process of SCC beam element after period of t=400 days from concreting and comparison of results with the theoretical ones in line with Eurocode 2 (EC2) requirements.
The developmental trends of high-rise construction require high-quality concrete because of the l... more The developmental trends of high-rise construction require high-quality concrete because of the large amount of reinforcement in the cross sections of concrete elements. A potential solution for such construction is self-compacting concrete because of its ability to provide support without compaction and vibration. Therefore, studies of concrete deflection, cracking, mechanical characteristics and strain have been conducted worldwide. In this study, we conducted experimental research to determine the strains, deflections and cracks in beams of self-compacting concrete and compared these results to those of conventional concrete over short-and long-term processes. In this paper, we present the experimentally obtained results for both types of concrete, including the deflections, module of elasticity values and compression strength sover a long-term process.
![Research paper thumbnail of AGGREGATE AND ASPHALT MIXTURE SPECIFIC GRAVITY MEASUREMENTS AND THEIR IMPACTSON STONE MASTIC ASPHALT [SMA] MIX DESIGN](https://attachments.academia-assets.com/52667010/thumbnails/1.jpg)
](Stone Mastic Asphalt [SMA] mixtures rely on stone-to-stone contacts among particles to resist app... more Stone Mastic Asphalt [SMA] mixtures rely on stone-to-stone contacts among particles to resist applied forces, and permanent deformation. Aggregates in SMA should resist degradation (fracture and abrasion) under high stresses at the contact points. Current practices for asphalt mix design and acceptance testing rely on volumetric properties. Vital to the calculation of mix volumetric properties are specific gravity measurements of the mixture and the aggregate in the mixture. For the Motorways wearing course, SMA stone grid must fulfill the mineralogical-petro graphic condition, to be on rock of igneous and/or metamorphic origin but of silicate composition and to have specific weight and abrasion LAmethod on resistance to fragmentation. During the construction of the Kosovo motorway for wearing course was used the SMA as asphalt layer for providing longer lifetime to the road construction. The super pave mix design for SMA wearing course has been composed considering the available stone with high mineralogical and petro graphic composition. The stone used for the wearing course on this motorway has abrasion resistance of LA =18 which is below the standard criteria for heavy traffic roads and motorways wearing courses. The specific weight of used stone of 3100 kg/m3is about 15% heavier than standard weight. For this specific aggregate is prepared special super pave design mix with bitumen content of 4.5% which is well below than typical SMA composition of 6.0−7.0% bitumen content. This paper describes the design mix of SMA from aggregate with relative high specific weight laid as wearing course on Kosovo Motorway.
Concrete is a material which has wide usage in engineering especially in construction engineering... more Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicate for high rise constructions, modern skyscrapers that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements. The solution for such construction is the self-compacted concrete because of its ability to fill pores without compaction and vibration. Considering this fact researches for deflections, mechanical characteristics of concrete and deformations are worldwide constantly conducted. In this line an experimental research for determining of deflections on beams of self-compacted concrete comparing them with normal concretes made. Results obtained experimentally will be presented for both types of concrete for: compression stress, splitting tensile stress, modulus of elasticity and deflections tests for duration testing time's t=400 days for beams which are investigated in creep.
Concrete such a composite material is practically more presented material in engineering structur... more Concrete such a composite material is practically more presented material in engineering structures. Development trends for high rise Building or structures, modern skyscrapers request the different workability of fresh concrete to cast in properly way and to achieve the requested results. The many of factors such are: highest of the cast concrete, sections of concrete elements, request the concrete with more plasticity and higher class of consistency, the smaller size of aggregate, the compacted process, etc. The fulfilling the previous condition, using the Self Compacted Concrete is one of the aims in this paper. Based on the requests, and also the behaviour of concrete in short and long term period , the presented experimental data provide the necessary information's for different results in comparing the conventional and using the SCC. The results based on the experiment in this paper present the difference in some of mechanical properties: modulus of Elasticity, Compression Strength; tensile strength -splitting method and the strains in testing period time t=400 days.
Concrete is material which has wide usage in engineering especially in construction engineering a... more Concrete is material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicates for high rise constructions, modern skyscrapers that is impossible building of such constructions with conventional concretes and low consistency, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact constantly worldwide are conducted researches for mechanical characteristics of concrete, deflections, stress and strains, in this line we made a experimental research for determining of shrinkage strains on beams of selfcompacted concrete comparing them with conventional concrete. Results obtained experimentally will be presented for both types of concrete for analyses of shrinkage strains for duration testing time's t=400 days.
Concrete is a material which has found a wide usage in engineering especially in construction eng... more Concrete is a material which has found a wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of selfcompacting concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity, compression strength, crack with and cracks spacing for duration failure testing time t = 400 days.
Development trends for high rise constructions, modern skyscrapers indicate that building such co... more Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of self-compacting concrete and compared it with theoretical results on the middle of beam on long term process.
Journal of Civil Engineering and Architecture, 2014
International Journal of Advanced Engineering Research and Science, 2017
In Kosovo as well as in many countries of the world have occurred explosions in objects, so this ... more In Kosovo as well as in many countries of the world have occurred explosions in objects, so this research have addressed the ways and possibilities of protecting the buildings by using their position as construction and design elements' after you load resisted by explosions. This paper presents basic information on the approaches for the evaluation of the blast effects on the structures. Motivation for the present study is recent events happening in the World where more and more structures are being destroyed by unexpected explosions in the urban areas. Intension of this investigation is to present basic information on what will happen when an explosive device is detonated. Some of the methods to calculate blast loads are presented. At the end it is presented simple method of designing a reinforced concrete wall barrier subject to a blast load caused by vehicle bomb. Calculation has been carried based on the kinetic energy that is delivered on the surface of the wall and that energy dissipation by the wall to resist such impulse load.
Development trends for high rise constructions, modern skyscrapers are indicating that building o... more Development trends for high rise constructions, modern skyscrapers are indicating that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross section of concrete elements. Solution for such construction is self-compacted concrete because of ability to fill good formworks without compaction and vibration. In this line, we conducted an experimental research to determine the mechanical characteristics of concrete, cracks, strains, deflections, strains on long term process and strains at failure test. The experimentally-obtained results will be presented for both types of concrete for: compression strength, splitting tensile strength, strains on concrete and strains on reinforcement for duration failure testing time t = 40 days. .
Second International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2015, 2015
Development trends for high rise Building or structures, modern skyscrapers request the different... more Development trends for high rise Building or structures, modern skyscrapers request the different workability of fresh concrete to cast in properly way and to achieve the requested results. The many of factors such are: highest of the cast concrete, sections of concrete elements, request the concrete with more plasticity and higher class of consistency, the smaller size of aggregate, the compacted process, etc. The fulfilling the previous condition, using the Self Compacted Concrete is one of the aims in this paper. Considering this fact, researches for deflections, mechanical characteristics of concrete and strains have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of self-compacted concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity and deflections tests for duration testing time t=40 days.
Concrete is a material which has found a wide usage in engineering especially in construction eng... more Concrete is a material which has found a wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of selfcompacting concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity, compression str...
EngRN: Structural Engineering (Topic), 2020
Based on the very good properties for putting on the work of self-compacting concrete, today in t... more Based on the very good properties for putting on the work of self-compacting concrete, today in the world has increased its use in the construction of high-rise buildings. Self-compacting concrete has very good viscosity which makes it suitable for pumping and at the same time compacting.<br><br>Based on the fact that self-compacting concrete does not have the same content of its constituent components as normal concrete, then we can say that both mechanical characteristics and deformations in concrete as in the short time process as well as deformations in the long process can not be same.<br><br>To verify the difference in the results of the information from the action of loads in the short time process as well as from the action of loads in the long process we conducted an experiment on beams from normal concrete, beams from self-compacting concrete and beams repaired with self-compacting concrete.<br><br>To determine the mechanical characteris...
Journal of International Environmental Application and Science, 2015
Received January 12, 2015; Accepted May 21, 2015 Abstract: Concrete is material which has wide us... more Received January 12, 2015; Accepted May 21, 2015 Abstract: Concrete is material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicates for high rise constructions, modern skyscrapers that is impossible building of such constructions with conventional concretes and low consistency, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact constantly worldwide are conducted researches for mechanical characteristics of concrete, deflections, stress and strains, in this line we made a experimental research for determining of shrinkage strains on beams of selfcompacted concrete comparing them with conventional concrete. Results obtained experimentally will be presented for both types of c...
Journal of International Environmental Application and Science, 2015
Received January 12, 2015; Accepted May 20, 2015 Abstract: Concrete is a material which has wide ... more Received January 12, 2015; Accepted May 20, 2015 Abstract: Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicate for high rise constructions, modern skyscrapers that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements. The solution for such construction is the selfcompacted concrete because of its ability to fill pores without compaction and vibration. Considering this fact researches for deflections, mechanical characteristics of concrete and deformations are worldwide constantly conducted. In this line an experimental research for determining of deflections on beams of self-compacted concrete comparing them with normal concretes made. Results obtained experimentally will be presented for both types of concrete f...
Development trends for high rise constructions, modern skyscrapers indicate that building such co... more Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of self-compacting concrete and compared it with theoretical results on the middle of beam on long term process.
WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT
Road network organizations should recognize quality firstly as part of business competitiveness. ... more Road network organizations should recognize quality firstly as part of business competitiveness. Road network infrastructure in general are damaged due to lack of proper maintenance and lack of investments by the Governments. The growing importance of the quality question in road network organizations has led many executives to modify their business and quality policies. Quality Management System helps to enable this evolution through a combination of “soft” non-technological (culture, habits, management and leadership approach) and “hard” technological changes that can yield substantial quality and environmental improvements. The quality challenge must be a major source of managerial change. The article focuses on the need for new approaches in the quality management of organizations and describes the quality management process which organizations could exemplify for road network organizations. We develop a general model of quality management in road network which is presented at t...
2012 UBT International Conference
Concrete is a material which has wide usage in engineering especially in construction engineering... more Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact, researches for deflections, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the deflections on beams of selfcompacted concrete and compared it with conventional concrete. The experimentally-obtained results will be presented for both types of concrete for: module of elasticity and deflections tests for duration testing time t=40 days.
International Journal of Advanced Engineering Research and Science
The latest developments of construction of high rise buildings like skyscrapers and different tow... more The latest developments of construction of high rise buildings like skyscrapers and different towers indicate that building such constructions with conventional concrete of low consistency is impossible due to the hard concreting process, mounting/demounting of scaffolding and the duration of concrete curing. Lately the most widely used material for construction of special buildings is selfcompacting concrete because of the ability to fill entire section of formworks without compaction and vibration and better homogeneity between concrete and reinforcement. With massive usage of Self Compacted Concrete (SCC) in special buildings, series of researches are conducted all over the world analyzing cracks, mechanical characteristics and deformations of SCC. These researches shows that calculation of concrete elements with normal concrete do not give adequate results according to EC2 because of the concrete class consistency and amount of reinforcement in the cross section. The SCC as raw material provides better results in term of concrete consistency gives better cross section homogeneity and it is vibration free. However SCC concrete cracks, deformations, creep, deflections are different than normal concrete and as such must be calculated and analyzed before application. In this paperwork we have presented calculation of cracks on long term process of SCC beam element after period of t=400 days from concreting and comparison of results with the theoretical ones in line with Eurocode 2 (EC2) requirements.
International Journal of Advanced Engineering Research and Science, 2017
The latest developments of construction of high rise buildings like skyscrapers and different tow... more The latest developments of construction of high rise buildings like skyscrapers and different towers indicate that building such constructions with conventional concrete of low consistency is impossible due to the hard concreting process, mounting/demounting of scaffolding and the duration of concrete curing. Lately the most widely used material for construction of special buildings is selfcompacting concrete because of the ability to fill entire section of formworks without compaction and vibration and better homogeneity between concrete and reinforcement. With massive usage of Self Compacted Concrete (SCC) in special buildings, series of researches are conducted all over the world analyzing cracks, mechanical characteristics and deformations of SCC. These researches shows that calculation of concrete elements with normal concrete do not give adequate results according to EC2 because of the concrete class consistency and amount of reinforcement in the cross section. The SCC as raw material provides better results in term of concrete consistency gives better cross section homogeneity and it is vibration free. However SCC concrete cracks, deformations, creep, deflections are different than normal concrete and as such must be calculated and analyzed before application. In this paperwork we have presented calculation of cracks on long term process of SCC beam element after period of t=400 days from concreting and comparison of results with the theoretical ones in line with Eurocode 2 (EC2) requirements.
The developmental trends of high-rise construction require high-quality concrete because of the l... more The developmental trends of high-rise construction require high-quality concrete because of the large amount of reinforcement in the cross sections of concrete elements. A potential solution for such construction is self-compacting concrete because of its ability to provide support without compaction and vibration. Therefore, studies of concrete deflection, cracking, mechanical characteristics and strain have been conducted worldwide. In this study, we conducted experimental research to determine the strains, deflections and cracks in beams of self-compacting concrete and compared these results to those of conventional concrete over short-and long-term processes. In this paper, we present the experimentally obtained results for both types of concrete, including the deflections, module of elasticity values and compression strength sover a long-term process.
Stone Mastic Asphalt [SMA] mixtures rely on stone-to-stone contacts among particles to resist app... more Stone Mastic Asphalt [SMA] mixtures rely on stone-to-stone contacts among particles to resist applied forces, and permanent deformation. Aggregates in SMA should resist degradation (fracture and abrasion) under high stresses at the contact points. Current practices for asphalt mix design and acceptance testing rely on volumetric properties. Vital to the calculation of mix volumetric properties are specific gravity measurements of the mixture and the aggregate in the mixture. For the Motorways wearing course, SMA stone grid must fulfill the mineralogical-petro graphic condition, to be on rock of igneous and/or metamorphic origin but of silicate composition and to have specific weight and abrasion LAmethod on resistance to fragmentation. During the construction of the Kosovo motorway for wearing course was used the SMA as asphalt layer for providing longer lifetime to the road construction. The super pave mix design for SMA wearing course has been composed considering the available stone with high mineralogical and petro graphic composition. The stone used for the wearing course on this motorway has abrasion resistance of LA =18 which is below the standard criteria for heavy traffic roads and motorways wearing courses. The specific weight of used stone of 3100 kg/m3is about 15% heavier than standard weight. For this specific aggregate is prepared special super pave design mix with bitumen content of 4.5% which is well below than typical SMA composition of 6.0−7.0% bitumen content. This paper describes the design mix of SMA from aggregate with relative high specific weight laid as wearing course on Kosovo Motorway.
Concrete is a material which has wide usage in engineering especially in construction engineering... more Concrete is a material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicate for high rise constructions, modern skyscrapers that building of such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements. The solution for such construction is the self-compacted concrete because of its ability to fill pores without compaction and vibration. Considering this fact researches for deflections, mechanical characteristics of concrete and deformations are worldwide constantly conducted. In this line an experimental research for determining of deflections on beams of self-compacted concrete comparing them with normal concretes made. Results obtained experimentally will be presented for both types of concrete for: compression stress, splitting tensile stress, modulus of elasticity and deflections tests for duration testing time's t=400 days for beams which are investigated in creep.
Concrete such a composite material is practically more presented material in engineering structur... more Concrete such a composite material is practically more presented material in engineering structures. Development trends for high rise Building or structures, modern skyscrapers request the different workability of fresh concrete to cast in properly way and to achieve the requested results. The many of factors such are: highest of the cast concrete, sections of concrete elements, request the concrete with more plasticity and higher class of consistency, the smaller size of aggregate, the compacted process, etc. The fulfilling the previous condition, using the Self Compacted Concrete is one of the aims in this paper. Based on the requests, and also the behaviour of concrete in short and long term period , the presented experimental data provide the necessary information's for different results in comparing the conventional and using the SCC. The results based on the experiment in this paper present the difference in some of mechanical properties: modulus of Elasticity, Compression Strength; tensile strength -splitting method and the strains in testing period time t=400 days.
Concrete is material which has wide usage in engineering especially in construction engineering a... more Concrete is material which has wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends indicates for high rise constructions, modern skyscrapers that is impossible building of such constructions with conventional concretes and low consistency, therefore there is a need for concrete with high processes because of great amount of steel in cross section of concrete elements, solution for such construction is self-compacted concrete because of ability to fill pores without compaction and vibration. Considering this fact constantly worldwide are conducted researches for mechanical characteristics of concrete, deflections, stress and strains, in this line we made a experimental research for determining of shrinkage strains on beams of selfcompacted concrete comparing them with conventional concrete. Results obtained experimentally will be presented for both types of concrete for analyses of shrinkage strains for duration testing time's t=400 days.
Concrete is a material which has found a wide usage in engineering especially in construction eng... more Concrete is a material which has found a wide usage in engineering especially in construction engineering and road infrastructure facilities. Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of selfcompacting concrete and compared it with conventional concrete. The experimentallyobtained results will be presented for both types of concrete for: module of elasticity, compression strength, crack with and cracks spacing for duration failure testing time t = 400 days.
Development trends for high rise constructions, modern skyscrapers indicate that building such co... more Development trends for high rise constructions, modern skyscrapers indicate that building such constructions with normal concretes and low consistency is impossible, therefore there is a need for concrete with high processes because of great amount of reinforcement in cross-section of concrete elements. Solution for such construction is self-compacting concrete because of its ability to fill good formworks without compaction and vibration. Considering this fact, researches for cracks, mechanical characteristics of concrete and deformations have been conducted worldwide. In this line, we conducted an experimental research to determine the cracks on beams of self-compacting concrete and compared it with theoretical results on the middle of beam on long term process.