shahiron shahidan - Academia.edu (original) (raw)
Papers by shahiron shahidan
MATEC web of conferences, Dec 12, 2016
Sustainability
Given that rubber tires are almost immune to biological degradation, this vast amount of solid wa... more Given that rubber tires are almost immune to biological degradation, this vast amount of solid waste is a major environmental concern worldwide. Reuse of these waste tires in the construction industry is one of the strategies to minimize their environmental pollution and landfill problems, while contributing to more economical building design. Thus, we assessed the improved traits of rubberized concrete made by combining palm oil fuel ash (POFA) with tire rubber aggregates (TRAs). Studies on the effects of POFA inclusion on the durability properties of rubberized concrete with TRAs as the replacement agent for fine or coarse aggregates remain deficient. Herein, the rubberized concrete contained 20% POFA as ordinary Portland cement (OPC) substitute, and various amounts of TRAs (5, 10, 20 and 30%). The proposed mixes enclosing three types of TRAs (fiber, fine and coarse aggregates) were characterized to determine their durability and acoustic performance. The water absorption, fire en...
Recent Trends in Civil Engineering and Built Environment, Jun 13, 2021
Plastic solid waste generation increases every year with the current consumption habit prevalent ... more Plastic solid waste generation increases every year with the current consumption habit prevalent in society nowadays. The improper disposal of plastic has been a major concern to the environment as it is not easily degradable. The issue of environmental pollution caused by polyethene terephthalates (PET) has been extensively discussed and the best solution proposed is recycling. Fibre Concrete (FC) was a composite material resulting from the addition of fibres to ordinary concrete. The objective of this research was to determine the acoustic absorption coefficient of concrete containing 0%, 0.5%, 1.0%, 1.5%, 2.0% of PET fibre compared to normal concrete. In this study, straight and irregular recycled PET fibres were used. The fibres were simply cut from PET plastic bottles. The length and width of recycling PET fibre were fixed at 25 mm and 5 mm respectively. The chosen percentages were 0.5%, 1.0%, 1.5% and 2.0% of fiber. A water-cement ratio of 0.45 was acceptable for all ranges. T...
Properties of Self-Compacting Concrete with Coal Bottom Ash Under Aggressive Environments, 2021
Concrete durability remains a concern in the construction industry due to salt attacks that accel... more Concrete durability remains a concern in the construction industry due to salt attacks that accelerate concrete deterioration. The salt attack has a significant impact on concrete durability and thus reduces the concrete lifespan. Detailed background information on concrete deterioration is presented in this chapter. This chapter also covers the concepts and mechanisms of salt attack in concrete. The influential factors affecting salt attack such as cement type, water binder ratio, and curing condition are discussed in detail. Moreover, aggressive exposure conditions such as wetting and drying and freeze and thawing are also briefed in this chapter. 1.1 Historical Background of Concrete Deterioration Concrete is themost commonmaterial used in construction for various purposes such as dams, highways, buildings, foundations, etc. Besides, concrete is fundamentally brittle and thus is susceptible to form cracks, which then affects the durability of concrete structures. In other words, ...
Polymers, 2021
Although free-cement-based alkali-activated paste, mortar, and concrete have been recognised as s... more Although free-cement-based alkali-activated paste, mortar, and concrete have been recognised as sustainable and environmental-friendly materials, a considerable amount of effort is still being channeled to ascertain the best binary or ternary binders that would satisfy the requirements of strength and durability as well as environmental aspects. In this study, the mechanical properties of alkali-activated mortar (AAM) made with binary binders, involving fly ash (FA) and granulated blast-furnace slag (GBFS) as well as bottle glass waste nano-silica powder (BGWNP), were opti-mised using both experimentally and optimisation modelling through three scenarios. In the first scenario, the addition of BGWNP varied from 5% to 20%, while FA and GBFS were kept constant (30:70). In the second and third scenarios, BGWNP (5–20%) was added as the partial replacement of FA and GBFS, separately. The results show that the combination of binary binders (FA and GBFS) and BGWNP increased AAM’s strength ...
Materials, 2021
The development of self-compacting alkali-activated concrete (SCAAC) has become a hot topic in th... more The development of self-compacting alkali-activated concrete (SCAAC) has become a hot topic in the scientific community; however, most of the existing literature focuses on the utilization of fly ash (FA), ground blast furnace slag (GBFS), silica fume (SF), and rice husk ash (RHA) as the binder. In this study, both the experimental and theoretical assessments using response surface methodology (RSM) were taken into account to optimize and predict the optimal content of ceramic waste powder (CWP) in GBFS-based self-compacting alkali-activated concrete, thus promoting the utilization of ceramic waste in construction engineering. Based on the suggested design array from the RSM model, experimental tests were first carried out to determine the optimum CWP content to achieve reasonable compressive, tensile, and flexural strengths in the SCAAC when exposed to ambient conditions, as well as to minimize its strength loss, weight loss, and UPVL upon exposure to acid attack. Based on the resu...
Proceedings of AICCE'19, 2019
Wood Material Science & Engineering, 2021
Journal of Materials Research and Technology, 2021
MATEC Web of Conferences, 2017
Forensic building is needed to examine the affected building structure components to assess the s... more Forensic building is needed to examine the affected building structure components to assess the structural integrity. This paper highlights some of the studies involved on affected concrete structures in various building types where the non-destructive test (NDT) and destructive tests. The structural integrity can be evaluated based on the extent of deterioration from the experimental results for instance the cause of the corrode reinforcements was due to inadequate concrete cover, whereas the failure of the concrete wall was due to structures' under design which leads to the collapse of the wall. The condition of the floor slab that experience vibration was assessed from the Laser Doppler Vibrator test (LDV). Based on the test results the peak acceleration of the particular floor slab is higher.
MATEC Web of Conferences, 2017
MATEC Web of Conferences, 2017
The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in v... more The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in various forms such as laminates and sheets has become moderately common. FRP is more effective as it provides a better solution in terms of properties and application. The effectiveness of the FRP strengthening system lies in the bond between concrete and FRP which is affected by various factors such as bond length of FRP, bond width, resin hardening and surface preparation. In certain cases, bond width is a major factor which ensures that the structure can be strengthened properly. This paper focuses mainly on the failure behaviour of concrete prisms strengthened by various bond width ratios of carbon Fibre Reinforced Polymer (CFRP) which are 20mm (0.27), 40mm (0.53), 60mm (0.8) and 75mm (1) respectively. A total of fifteen strengthened prisms measuring 75 mm x 75 mm x 350 mm were cast for a three-point load test. Twelve strengthened prism specimens were externally strengthened with CFRP and three specimens were designated as control. The findings show that a greater width ratio of CFRP will strengthen concrete prisms greatly and will result in different types of failure modes.
MATEC Web of Conferences, 2016
The cost for producing concrete has been increasing steadily. Therefore, the demand for using agr... more The cost for producing concrete has been increasing steadily. Therefore, the demand for using agricultural waste as a replacement or admixture inside concrete is also increasing gradually. Many researchers are doing research on agricultural waste such as palm oil, corn cobs, rice husks and coconut shells. Agricultural waste is increasingly being utilized in cement, concrete and other construction materials and provides numerous indirect benefits such as reduction in land fill cost, saving energy and protecting the environment from possible pollution. The aim is to produce concrete with improved properties at a lower cost and to maintain environmental sustainability. In this review paper, the suitability of coconut shell for concrete cool wall panels will be the main focus. Coconut shells can be used as aggregates in concrete. The characteristic properties of coconut shell concrete such as workability, bulk density, compressive strength, flexural tensile, water absorption and thermal performance were reviewed in this paper. This paper attempts to answer whether coconut shell is suitable to be used in concrete to produce a concrete cool wall panel in order to reduce heat transfer inside a building.
MATEC Web of Conferences, 2016
IOP Conference Series: Materials Science and Engineering, 2018
Lecture notes in civil engineering, 2021
IOP conference series, Nov 1, 2017
A porous concrete able to reduce the sound wave that pass through it. When a sound waves strike a... more A porous concrete able to reduce the sound wave that pass through it. When a sound waves strike a material, a portion of the sound energy was reflected back and another portion of the sound energy was absorbed by the material while the rest was transmitted. The larger portion of the sound wave being absorbed, the lower the noise level able to be lowered. This study is to investigate the sound absorption coefficient of coal bottom ash (CBA) concrete compared to the sound absorption coefficient of normal concrete by carried out the impedance tube test. Hence, this paper presents the result of the impedance tube test of the CBA concrete and normal concrete.
International Journal of Integrated Engineering, Dec 1, 2018
MATEC web of conferences, 2017
Acoustic Emission (AE) is a non-destructive testing known as assessment on damage detection in st... more Acoustic Emission (AE) is a non-destructive testing known as assessment on damage detection in structural engineering. It also can be used to discriminate the different types of damage occurring in a composite materials. The main problem associated with the data analysis is the discrimination between the different AE sources and analysis of the AE signal in order to identify the most critical damage mechanism. Clustering analysis is a technique in which the set of object are assigned to a group called cluster. The objective of the cluster analysis is to separate a set of data into several classes that reflect the internal structure of data. In this paper was used k-means algorithm for partitioned clustering method, numerous effort have been made to improve the performance of application k-means clustering algorithm. This paper presents a current review on application clustering system in Acoustic Emission.
MATEC web of conferences, Dec 12, 2016
Sustainability
Given that rubber tires are almost immune to biological degradation, this vast amount of solid wa... more Given that rubber tires are almost immune to biological degradation, this vast amount of solid waste is a major environmental concern worldwide. Reuse of these waste tires in the construction industry is one of the strategies to minimize their environmental pollution and landfill problems, while contributing to more economical building design. Thus, we assessed the improved traits of rubberized concrete made by combining palm oil fuel ash (POFA) with tire rubber aggregates (TRAs). Studies on the effects of POFA inclusion on the durability properties of rubberized concrete with TRAs as the replacement agent for fine or coarse aggregates remain deficient. Herein, the rubberized concrete contained 20% POFA as ordinary Portland cement (OPC) substitute, and various amounts of TRAs (5, 10, 20 and 30%). The proposed mixes enclosing three types of TRAs (fiber, fine and coarse aggregates) were characterized to determine their durability and acoustic performance. The water absorption, fire en...
Recent Trends in Civil Engineering and Built Environment, Jun 13, 2021
Plastic solid waste generation increases every year with the current consumption habit prevalent ... more Plastic solid waste generation increases every year with the current consumption habit prevalent in society nowadays. The improper disposal of plastic has been a major concern to the environment as it is not easily degradable. The issue of environmental pollution caused by polyethene terephthalates (PET) has been extensively discussed and the best solution proposed is recycling. Fibre Concrete (FC) was a composite material resulting from the addition of fibres to ordinary concrete. The objective of this research was to determine the acoustic absorption coefficient of concrete containing 0%, 0.5%, 1.0%, 1.5%, 2.0% of PET fibre compared to normal concrete. In this study, straight and irregular recycled PET fibres were used. The fibres were simply cut from PET plastic bottles. The length and width of recycling PET fibre were fixed at 25 mm and 5 mm respectively. The chosen percentages were 0.5%, 1.0%, 1.5% and 2.0% of fiber. A water-cement ratio of 0.45 was acceptable for all ranges. T...
Properties of Self-Compacting Concrete with Coal Bottom Ash Under Aggressive Environments, 2021
Concrete durability remains a concern in the construction industry due to salt attacks that accel... more Concrete durability remains a concern in the construction industry due to salt attacks that accelerate concrete deterioration. The salt attack has a significant impact on concrete durability and thus reduces the concrete lifespan. Detailed background information on concrete deterioration is presented in this chapter. This chapter also covers the concepts and mechanisms of salt attack in concrete. The influential factors affecting salt attack such as cement type, water binder ratio, and curing condition are discussed in detail. Moreover, aggressive exposure conditions such as wetting and drying and freeze and thawing are also briefed in this chapter. 1.1 Historical Background of Concrete Deterioration Concrete is themost commonmaterial used in construction for various purposes such as dams, highways, buildings, foundations, etc. Besides, concrete is fundamentally brittle and thus is susceptible to form cracks, which then affects the durability of concrete structures. In other words, ...
Polymers, 2021
Although free-cement-based alkali-activated paste, mortar, and concrete have been recognised as s... more Although free-cement-based alkali-activated paste, mortar, and concrete have been recognised as sustainable and environmental-friendly materials, a considerable amount of effort is still being channeled to ascertain the best binary or ternary binders that would satisfy the requirements of strength and durability as well as environmental aspects. In this study, the mechanical properties of alkali-activated mortar (AAM) made with binary binders, involving fly ash (FA) and granulated blast-furnace slag (GBFS) as well as bottle glass waste nano-silica powder (BGWNP), were opti-mised using both experimentally and optimisation modelling through three scenarios. In the first scenario, the addition of BGWNP varied from 5% to 20%, while FA and GBFS were kept constant (30:70). In the second and third scenarios, BGWNP (5–20%) was added as the partial replacement of FA and GBFS, separately. The results show that the combination of binary binders (FA and GBFS) and BGWNP increased AAM’s strength ...
Materials, 2021
The development of self-compacting alkali-activated concrete (SCAAC) has become a hot topic in th... more The development of self-compacting alkali-activated concrete (SCAAC) has become a hot topic in the scientific community; however, most of the existing literature focuses on the utilization of fly ash (FA), ground blast furnace slag (GBFS), silica fume (SF), and rice husk ash (RHA) as the binder. In this study, both the experimental and theoretical assessments using response surface methodology (RSM) were taken into account to optimize and predict the optimal content of ceramic waste powder (CWP) in GBFS-based self-compacting alkali-activated concrete, thus promoting the utilization of ceramic waste in construction engineering. Based on the suggested design array from the RSM model, experimental tests were first carried out to determine the optimum CWP content to achieve reasonable compressive, tensile, and flexural strengths in the SCAAC when exposed to ambient conditions, as well as to minimize its strength loss, weight loss, and UPVL upon exposure to acid attack. Based on the resu...
Proceedings of AICCE'19, 2019
Wood Material Science & Engineering, 2021
Journal of Materials Research and Technology, 2021
MATEC Web of Conferences, 2017
Forensic building is needed to examine the affected building structure components to assess the s... more Forensic building is needed to examine the affected building structure components to assess the structural integrity. This paper highlights some of the studies involved on affected concrete structures in various building types where the non-destructive test (NDT) and destructive tests. The structural integrity can be evaluated based on the extent of deterioration from the experimental results for instance the cause of the corrode reinforcements was due to inadequate concrete cover, whereas the failure of the concrete wall was due to structures' under design which leads to the collapse of the wall. The condition of the floor slab that experience vibration was assessed from the Laser Doppler Vibrator test (LDV). Based on the test results the peak acceleration of the particular floor slab is higher.
MATEC Web of Conferences, 2017
MATEC Web of Conferences, 2017
The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in v... more The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in various forms such as laminates and sheets has become moderately common. FRP is more effective as it provides a better solution in terms of properties and application. The effectiveness of the FRP strengthening system lies in the bond between concrete and FRP which is affected by various factors such as bond length of FRP, bond width, resin hardening and surface preparation. In certain cases, bond width is a major factor which ensures that the structure can be strengthened properly. This paper focuses mainly on the failure behaviour of concrete prisms strengthened by various bond width ratios of carbon Fibre Reinforced Polymer (CFRP) which are 20mm (0.27), 40mm (0.53), 60mm (0.8) and 75mm (1) respectively. A total of fifteen strengthened prisms measuring 75 mm x 75 mm x 350 mm were cast for a three-point load test. Twelve strengthened prism specimens were externally strengthened with CFRP and three specimens were designated as control. The findings show that a greater width ratio of CFRP will strengthen concrete prisms greatly and will result in different types of failure modes.
MATEC Web of Conferences, 2016
The cost for producing concrete has been increasing steadily. Therefore, the demand for using agr... more The cost for producing concrete has been increasing steadily. Therefore, the demand for using agricultural waste as a replacement or admixture inside concrete is also increasing gradually. Many researchers are doing research on agricultural waste such as palm oil, corn cobs, rice husks and coconut shells. Agricultural waste is increasingly being utilized in cement, concrete and other construction materials and provides numerous indirect benefits such as reduction in land fill cost, saving energy and protecting the environment from possible pollution. The aim is to produce concrete with improved properties at a lower cost and to maintain environmental sustainability. In this review paper, the suitability of coconut shell for concrete cool wall panels will be the main focus. Coconut shells can be used as aggregates in concrete. The characteristic properties of coconut shell concrete such as workability, bulk density, compressive strength, flexural tensile, water absorption and thermal performance were reviewed in this paper. This paper attempts to answer whether coconut shell is suitable to be used in concrete to produce a concrete cool wall panel in order to reduce heat transfer inside a building.
MATEC Web of Conferences, 2016
IOP Conference Series: Materials Science and Engineering, 2018
Lecture notes in civil engineering, 2021
IOP conference series, Nov 1, 2017
A porous concrete able to reduce the sound wave that pass through it. When a sound waves strike a... more A porous concrete able to reduce the sound wave that pass through it. When a sound waves strike a material, a portion of the sound energy was reflected back and another portion of the sound energy was absorbed by the material while the rest was transmitted. The larger portion of the sound wave being absorbed, the lower the noise level able to be lowered. This study is to investigate the sound absorption coefficient of coal bottom ash (CBA) concrete compared to the sound absorption coefficient of normal concrete by carried out the impedance tube test. Hence, this paper presents the result of the impedance tube test of the CBA concrete and normal concrete.
International Journal of Integrated Engineering, Dec 1, 2018
MATEC web of conferences, 2017
Acoustic Emission (AE) is a non-destructive testing known as assessment on damage detection in st... more Acoustic Emission (AE) is a non-destructive testing known as assessment on damage detection in structural engineering. It also can be used to discriminate the different types of damage occurring in a composite materials. The main problem associated with the data analysis is the discrimination between the different AE sources and analysis of the AE signal in order to identify the most critical damage mechanism. Clustering analysis is a technique in which the set of object are assigned to a group called cluster. The objective of the cluster analysis is to separate a set of data into several classes that reflect the internal structure of data. In this paper was used k-means algorithm for partitioned clustering method, numerous effort have been made to improve the performance of application k-means clustering algorithm. This paper presents a current review on application clustering system in Acoustic Emission.