AHMAD RASIDI OSMAN | Universiti Teknologi Mara (original) (raw)
Papers by AHMAD RASIDI OSMAN
Research on Engineering Structures and Materials
Fibre-reinforced concrete (FRC) is a special concrete incorporated with fibre that can replace re... more Fibre-reinforced concrete (FRC) is a special concrete incorporated with fibre that can replace reinforced concrete for utilising in structural applications. FRC with plastic waste fibre is introduced in construction to resolve the corrosion problem of the reinforced steel bar in the concrete, resolve the cracking on the concrete and minimise the environmental problem which occurred due to plastic bottle waste disposal and non-biodegradable material. The main objective of this study is to determine the compression strength behaviour of waste Polyethylene Terephthalate (PET) fibre with hoop-shaped in FRC in percentages of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7% and 0.8% weight to weight of cement. For that reason, the waste mineral bottle water is collected, cleaned and cut into 100 mm of length and 5 mm of width to propose hoop-shaped waste PET fibre. FRC with waste PET fibre is tested for its workability in fresh conditions and its water absorption and compression strength in hardened conditions. Furthermore, the tensile test is conducted for determining the stress and strain behaviour of waste PET fibre in two conditions; in single and hoop-shaped. From the experimental activity, the waste PET fibre of 0.5% produced the appropriate compression strength value and recorded a percentage difference approximately of 6.33% for 28 days duration as compared with a control mix. In addition, the percentage difference of the water absorption of all mixes is reported to have in the range of 0.25% to 25.96% when compared with the control mix which is tremendously affected the compressive strength.
International Journal of GEOMATE, 2018
Cold-formed steel is a popular material with various advantages. Its easy production and assembly... more Cold-formed steel is a popular material with various advantages. Its easy production and assembly give engineer an option to speed the construction process. However, thinness relates to the major issue of buckling, especially when dealing with high temperature. The unprotected cold-formed steel behaviour under fire is expected to have a little strength as compared to hot-rolled steel. Information on such behaviour is still limited. Fire resistance testing on built-up box CFS column was presented in this paper. Two fire resistance tests were carried out under compression load. The Standard ISO 834 Fire Resistance Test under 50% and 70% degree of utilisation measured the temperatures at several points of the steel column surface by using a surface thermocouple and axial column deformation. For reference purpose, one same static test at ambient temperature was carried out to assess the load bearing capacity. Results found that the failure temperature of built-up CFS could reach up to 515 ºC and 443 ºC within 8 minutes and 7 minutes resistant time for 50 % and 70% degree of utilisation, respectively. Based on deformation analysis, buckling temperature of the column was 448 ºC and 394 ºC with a critical time of 7 minutes for 50 % and 70% degree of utilisation, respectively. This concluded that the higher degree of utilisation results in lower critical temperatures of the columns.
The industrial training is a mandatory course for Diploma Civil Engineering, UiTM Pahang. It is t... more The industrial training is a mandatory course for Diploma Civil Engineering, UiTM Pahang. It is to expose students to real engineering practices to meet the Engineering Technician Accreditation Council (ETAC) requirements. However, the current method for monitoring and assesssing students’ progress during their industrial training is inadequate and not systematic due to incomplete student log books, unspecified scoring rubrics, inaccurate assessments by lecturers who are not experts in the field, infrequent visits and monitoring by faculty supervisors, inability to monitor student daily activities by faculty supervisors and unstandardized format for student reports. Thus, ‘Indus-Train’ system was developed by the Civil Engineering Innovative and Creative group (CivTEX), UiTM Pahang to assist the faculty (Civil Engineering) in solving problems related to student monitoring and assessment during industrial training. This system is more systematic, competitive, reduces management costs...
Lawatan akademikpelajar ke lapangan telah menjadi satu keperluan bagi fakultiyang berasaskan sain... more Lawatan akademikpelajar ke lapangan telah menjadi satu keperluan bagi fakultiyang berasaskan sains dan teknologi. Proses pengajaran dan pembelajaran (P&P) pelajar akan dapat dipertingkatkan melalui pendedahan langsung ini. Lawatan ini meliputi semua aspek penting di da I am cabang ilmu kejuruteraan awam. Bagi program Diploma Kejuruteraan Awam, UiTM terdapat 6 kod kursus yang meletakkan syarat lawatan ini di dalam silibus yang berkenaan. Menyedari keperluan ini, Kumpulan KIK Pinnacle, Fakulti Kejuruteraan Awam, UiTM Pahang telah mengambil satu inisiatif penambahbaikan bagi memudahkan urusan permohonan, peruntukan kewangan dan aspek pengurusan yang perlu dilakukan sebelum lawatan dapat dijalankan. Elektronik-Lawatan Akademik (e-LA) telah dibangunkan dengan mengelektronikkan semua data konvensional yang perlu dilakukan di peringkat fakulti dan pentadbiran permohonan sebelum lawatan ini dibenarkan oleh pihak pengurusan kampus. Kajian awalan penggunaan sistem ini yang telah dijalankan di...
![Research paper thumbnail of Sistem ‘Indus-Train’: medium pemantauan dan penilaian pelajar semasa latihan industri / Amminudin Ab Latif … [et al.]](https://attachments.academia-assets.com/92302266/thumbnails/1.jpg)
](Latihan industri merupakan satu kursus wajib dalam program Diploma Kejuruteraan Awam, UiTM Pahang... more Latihan industri merupakan satu kursus wajib dalam program Diploma Kejuruteraan Awam, UiTM Pahang bagi memberi pendedahan amalan kejuruteraan yang sebenar kepada para pelajar dan untuk memenuhi keperluan kelayakan akreditasi 'Engineering Technician Accreditation Council'(ETAC). Namun begitu, proses penilaian dan pemantauan ke atas pelajar yang menjalani latihan industri adalah tidak sistematik kerana buku log tidak lengkap, rubrik pemarkahan tidak spesifik, penilaian oleh pensyarahyang bukan dalam bidang kepakarannya, tiada dan tidak berkala lawatan dan pemeriksaan ke tapak oleh penyelia fakulti, tiada pemantauan aktiviti harian oleh penyelia fakulti serta laporan akhir tidak berformat. Dalam era globalisasi kini, kaedah ini seharusnya perlu ditambahbaik bagi memastikan latihan industri pelajar lebih sistematik, berdaya saing, mengurangkan kos pengurusan serta mencapai kelestarian dalam penilaian latihan industri. Oleh itu, sistem 'Indus-Train' telah dibangunkan oleh...
Solid State Phenomena, 2018
Concrete incorporated with waste paper fibres (WPF) was studied to get the initial information of... more Concrete incorporated with waste paper fibres (WPF) was studied to get the initial information of compressive strength before doing further action to solve a critical problem. Problems such as environmental problem, high production cost and concrete distress were solved to minimise the critical problem. The main objective of the preliminary study is to investigate the compressive strength of concrete with WPF at an appropriate percentage. Some review assessments from previous studies, either on industrial fibres or natural fibres with critics, were done to obtain information and upgrade knowledge. The compressive strength and water absorption result were reported for concrete without and with WPF in proportion of 0.2%, 0.4%, 0.6%, 0.8%, 1.0% and 1.5%. From the observation and testing, the compressive strength of concrete with WPF was decreased with increase in fibre percentage in the concrete. Besides, the water absorption, which always influence the compressive strength, was increa...
Key Engineering Materials, 2018
Cold-formed steel (CFS) is a popular steel-based material for building such as roof truss system ... more Cold-formed steel (CFS) is a popular steel-based material for building such as roof truss system and wall frame panel. CFS with a variety of shapes, cross-sections and thickness produce a lot of advantages such as ease of production, corrosion resistance and high strength to weight ratio. Connection of the CFS sections between them uses screw, bolt and nut, rivet or weld. But, the detail information for the connector in standard either by Eurocode 3 or American Iron and Steel Institute (AISI) is still incomplete especially methods for testing and also lack in the basic knowledge of testing for the connector or combination of connectors. The connector that was used in this study was a self-drilling screw. The objective of the study is to provide the mechanical behaviour information of self-drilling screws from shear and pull-out tests. Both tests utilised Universal Testing Machine with 100 kN capacity to determine the ultimate load and load-deformation behaviour of the self-drilling ...
Materials Today: Proceedings, 2019
Cold-formed steel (CFS) is a steel-based material that is always used as a structural or non-stru... more Cold-formed steel (CFS) is a steel-based material that is always used as a structural or non-structural component in construction activities. In Malaysia, CFS is broadly utilised in roof truss systems to replace timber and hot-rolled steel in residential houses and small industrial buildings. Some of the advantages of CFS include being lightweight, recyclable, and durable and having highest strength-to-weight ratio. It is also becoming excessively popular as a building material. However, CFS with its thin surface tends to fail in buckling on short and slender sections either at the compression or flexural members especially for the web element. In this study, the CFS channel section with 100 mm of the web, 50 mm of flange, 12 mm of lip, 1.55 mm of thickness and without any web stiffener has been selected. With the intention of solving the buckling failure, CFS has been formed as a symmetrical and closed section and filled with oriented strand board (OSB) at the gap of each section. The main objective of this study was to review the previous study of CFS with other materials to produce the composite material and introduce the development and preliminary study of the new section. The CFS with OSB was proposed as a solid symmetrical section to solve the local, distortional, and global buckling, as well as establish a stable and stiffened section under compressed conditions. Therefore, the local and distortional buckling of the compressed member was completely solved by the built-up and box-up of CFS with the OSB section however the CFS channel section with OSB managed to minimise the effect of local and distortional buckling. There was a 9.20%, 5.16% and 5.84% percentage difference of the ultimate load between the CFS without and with OSB sections. The new section reduced the production cost, while also reducing the material usage. It also has the potential to be an innovative section by supporting the Malaysian sustainable development programme.
Regional Conference on Science, Technology and Social Sciences (RCSTSS 2014), 2016
Cold-formed steel channel (CFSC) section is a popular material that used broadly in construction,... more Cold-formed steel channel (CFSC) section is a popular material that used broadly in construction, especially in the roof truss system and non-structural elements. CFSC with a variety of sizes, shapes, thicknesses and grades is becoming admired because it offers several advantages such as lightweight, easy fabrication, fast installation, no formwork, termite resistance and corrosion resistance. The main objective of the study is to investigate the CFSC material properties with a variety of thicknesses. When the CFSC is utilised as in construction structural material, the CFSC material properties must be evaluated for further work, especially in design, failure capacity information and modelling intention. The thickness of the CFSC is important in study to check the failure mode and mechanical properties of the material. The material properties of CFSC are examined by using tensile coupon test specimens and universal tensile testing machine. The CFSC that be used in the study is CFSC 1.0 and CFSC 1.2 with the thickness of 1.0 and 1.2 mm respectively for grade G450. The CFSC is selected by having intermediate end stiffener and lipped. The specimen of tensile coupon test is located on flange, web, upper corner and bottom corner of overall section. From the results, the yield stress, elastic modulus and ultimate stress of the CFSC 1.2 is found higher than of CFSC 1.0.
Materials Science Forum, 2016
Fire accident is considered as the one of most severe environmental hazards to building and infra... more Fire accident is considered as the one of most severe environmental hazards to building and infrastructure. Cold formed steel (CFS) beam has been used extensively as primary load bearing structural member in many applications in the building construction due to high efficiency in term of production, fabrication, and assembling in construction. This material must be well perform in fire incident in term of its integrity and stability of structural for a period of time. Hence, the assessment of the material properties of this material is greatly important in order to predict the performance of this structure under fire incident. The tensile coupon tests of CFS are according to BS EN 10002-1:2001. The CFS material G450 with 1.9 mm thickness is used in this study. The elastic modulus, yield stress, correspondent percentage strain at yield stress, ultimate stress, and correspondent percentage strain of ultimate stress was 200.3 GPa, 540.5 MPa, 0.478 %, 618.8 MPa, and 8.701 % respectively...
Procedia Engineering, 2015
Cold-formed steel (CFS) is the popular structural material used in the building nowadays due to a... more Cold-formed steel (CFS) is the popular structural material used in the building nowadays due to a variety of advantages in its manufacturing, fabrication and erection. CFS with the shape of the channel is selected and formed to be a stub or short column with a height of 240 mm. The main objective of the study is to determine the mechanical behaviour of the CFS channel stub column at post elevated temperature from normal to 1000 0 C. The CFS stub columns are exposed to fire at the furnace and let it cool at room temperature. After 24 hours, the CFS is tested by using Universal Testing Machine (UTM) for ultimate load. When this material is exposed to fire the steel material properties are degraded. The strength of the CFS stub column is recovered to its original normal strength when heated below 600 ºC; beyond this temperature the strength has reduced with recovery of strength less than 65 %. It was observed the column would fail by a combination of local and some distortional buckling. The predictions using Direct Strength Method (DSM) are conservative for all post elevated temperature of the CFS stub column and the column were predicted to fail by distortional buckling. The CFS channels are able to remain the strength after exposing to temperature up to 400 ºC. Beyond that, the capacity was reduced more than 40 % of the normal strength. The prediction with the EC3 yield for temperature up to 400 ºC the prediction is overdesigned and considerably unsafe. But beyond temperature of 400 ºC, it was conservative similar to the Direct Strength Method. The columns are predicted to fail in compression failure.
Proceedings of the International Conference on Science, Technology and Social Sciences (ICSTSS) 2012, 2014
Cartesian coordinate is the most popular coordinate systems compared to polar, cylindrical, and s... more Cartesian coordinate is the most popular coordinate systems compared to polar, cylindrical, and spherical coordinates. This coordinate system is the foundation of analytic geometry, and it has been extensively used in many disciplines such as physics, engineering, astronomy, and many more. In this work, we represent the location of the main part of an Islamic architecture in the East Coast of Malaysia in terms of Cartesian coordinate. The results show that the center of the dome is located at point (0, 0, z 0) with the prayer hall considered as the xy-plane. The Cartesian equations of other boundary in the main part of the Islamic architecture are also formulated.
2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA), 2011
This paper presents the comparison physical study of solid waste of Bottom Ash Aggregate (BAA) an... more This paper presents the comparison physical study of solid waste of Bottom Ash Aggregate (BAA) and Washed Bottom Ash Aggregate (WBAA) as fine aggregate in concrete. The BAA is a waste material that is taken from electric coal power plant and the basic source material of WBAA is a treated bottom ash. The BAA is fully submerged in clean and clear water for 3 days to produce a WBAA with low amount of carbon. This WBAA with low carbon composition is utilised to produce concrete with less percentage of carbon usage. Low amount of carbon can reduce energy in building, reduce environmental impact and can be supported to green material in concrete. So that, this two types of bottom ash were studied their physical properties and then compared. The aim of the study is to investigate the physical comparison of BAA and WBAA in producing concrete or concrete applications. The results of the sieve analysis and fineness modulus of BAA and WBAA were discussed. The calculated of fineness modulus of BAA and WBAA are 4.93 and 3.65 respectively, which are more than 3.5 and it is considered very coarse. Finally, it is concluded that this both aggregate is potential for utilise in concrete and mortar or concrete/mortar application.
MATEC Web of Conferences, 2015
Special concrete is the type of concrete that produced by using waste material or using unusual t... more Special concrete is the type of concrete that produced by using waste material or using unusual techniques/method of preparation. Special concrete made with waste material is becoming popular in a construction site. This is because the special concrete is selected due to quality, integrity, economic factor and environmental factor. The waste glass is selected as an additional material to provide a good in compressive strength value. The compressive strength is the importance of mechanical properties of concrete and typically the concrete is sustained and stiffed in compression load. The significant issue to utilize the waste glass from the automotive windscreen is to improve the strength of concrete. The waste glass is crushed to become 5 mm size and recognised as crushed waste glass that be used in concrete as additional material. The main objective of the study is to determine the appropriate percentage of crushed waste glass in concrete grade, 30 in order to enhance the compressive strength. There are four mixes of concrete that contained of crushed waste glass with percentage of 2 %, 4 %, 6 % and 8 % and one control mix with 0 % of crushed waste glass. As the result, crushed waste glass with an additional 4 % in concrete is reported having a higher value of compressive strength in early and mature stage. In addition, if the percentage of crushed glass wastes in concrete increases and it leads to a reduction in the workability of concrete. 2 Material and method This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Research on Engineering Structures and Materials
Fibre-reinforced concrete (FRC) is a special concrete incorporated with fibre that can replace re... more Fibre-reinforced concrete (FRC) is a special concrete incorporated with fibre that can replace reinforced concrete for utilising in structural applications. FRC with plastic waste fibre is introduced in construction to resolve the corrosion problem of the reinforced steel bar in the concrete, resolve the cracking on the concrete and minimise the environmental problem which occurred due to plastic bottle waste disposal and non-biodegradable material. The main objective of this study is to determine the compression strength behaviour of waste Polyethylene Terephthalate (PET) fibre with hoop-shaped in FRC in percentages of 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7% and 0.8% weight to weight of cement. For that reason, the waste mineral bottle water is collected, cleaned and cut into 100 mm of length and 5 mm of width to propose hoop-shaped waste PET fibre. FRC with waste PET fibre is tested for its workability in fresh conditions and its water absorption and compression strength in hardened conditions. Furthermore, the tensile test is conducted for determining the stress and strain behaviour of waste PET fibre in two conditions; in single and hoop-shaped. From the experimental activity, the waste PET fibre of 0.5% produced the appropriate compression strength value and recorded a percentage difference approximately of 6.33% for 28 days duration as compared with a control mix. In addition, the percentage difference of the water absorption of all mixes is reported to have in the range of 0.25% to 25.96% when compared with the control mix which is tremendously affected the compressive strength.
International Journal of GEOMATE, 2018
Cold-formed steel is a popular material with various advantages. Its easy production and assembly... more Cold-formed steel is a popular material with various advantages. Its easy production and assembly give engineer an option to speed the construction process. However, thinness relates to the major issue of buckling, especially when dealing with high temperature. The unprotected cold-formed steel behaviour under fire is expected to have a little strength as compared to hot-rolled steel. Information on such behaviour is still limited. Fire resistance testing on built-up box CFS column was presented in this paper. Two fire resistance tests were carried out under compression load. The Standard ISO 834 Fire Resistance Test under 50% and 70% degree of utilisation measured the temperatures at several points of the steel column surface by using a surface thermocouple and axial column deformation. For reference purpose, one same static test at ambient temperature was carried out to assess the load bearing capacity. Results found that the failure temperature of built-up CFS could reach up to 515 ºC and 443 ºC within 8 minutes and 7 minutes resistant time for 50 % and 70% degree of utilisation, respectively. Based on deformation analysis, buckling temperature of the column was 448 ºC and 394 ºC with a critical time of 7 minutes for 50 % and 70% degree of utilisation, respectively. This concluded that the higher degree of utilisation results in lower critical temperatures of the columns.
The industrial training is a mandatory course for Diploma Civil Engineering, UiTM Pahang. It is t... more The industrial training is a mandatory course for Diploma Civil Engineering, UiTM Pahang. It is to expose students to real engineering practices to meet the Engineering Technician Accreditation Council (ETAC) requirements. However, the current method for monitoring and assesssing students’ progress during their industrial training is inadequate and not systematic due to incomplete student log books, unspecified scoring rubrics, inaccurate assessments by lecturers who are not experts in the field, infrequent visits and monitoring by faculty supervisors, inability to monitor student daily activities by faculty supervisors and unstandardized format for student reports. Thus, ‘Indus-Train’ system was developed by the Civil Engineering Innovative and Creative group (CivTEX), UiTM Pahang to assist the faculty (Civil Engineering) in solving problems related to student monitoring and assessment during industrial training. This system is more systematic, competitive, reduces management costs...
Lawatan akademikpelajar ke lapangan telah menjadi satu keperluan bagi fakultiyang berasaskan sain... more Lawatan akademikpelajar ke lapangan telah menjadi satu keperluan bagi fakultiyang berasaskan sains dan teknologi. Proses pengajaran dan pembelajaran (P&P) pelajar akan dapat dipertingkatkan melalui pendedahan langsung ini. Lawatan ini meliputi semua aspek penting di da I am cabang ilmu kejuruteraan awam. Bagi program Diploma Kejuruteraan Awam, UiTM terdapat 6 kod kursus yang meletakkan syarat lawatan ini di dalam silibus yang berkenaan. Menyedari keperluan ini, Kumpulan KIK Pinnacle, Fakulti Kejuruteraan Awam, UiTM Pahang telah mengambil satu inisiatif penambahbaikan bagi memudahkan urusan permohonan, peruntukan kewangan dan aspek pengurusan yang perlu dilakukan sebelum lawatan dapat dijalankan. Elektronik-Lawatan Akademik (e-LA) telah dibangunkan dengan mengelektronikkan semua data konvensional yang perlu dilakukan di peringkat fakulti dan pentadbiran permohonan sebelum lawatan ini dibenarkan oleh pihak pengurusan kampus. Kajian awalan penggunaan sistem ini yang telah dijalankan di...
Latihan industri merupakan satu kursus wajib dalam program Diploma Kejuruteraan Awam, UiTM Pahang... more Latihan industri merupakan satu kursus wajib dalam program Diploma Kejuruteraan Awam, UiTM Pahang bagi memberi pendedahan amalan kejuruteraan yang sebenar kepada para pelajar dan untuk memenuhi keperluan kelayakan akreditasi 'Engineering Technician Accreditation Council'(ETAC). Namun begitu, proses penilaian dan pemantauan ke atas pelajar yang menjalani latihan industri adalah tidak sistematik kerana buku log tidak lengkap, rubrik pemarkahan tidak spesifik, penilaian oleh pensyarahyang bukan dalam bidang kepakarannya, tiada dan tidak berkala lawatan dan pemeriksaan ke tapak oleh penyelia fakulti, tiada pemantauan aktiviti harian oleh penyelia fakulti serta laporan akhir tidak berformat. Dalam era globalisasi kini, kaedah ini seharusnya perlu ditambahbaik bagi memastikan latihan industri pelajar lebih sistematik, berdaya saing, mengurangkan kos pengurusan serta mencapai kelestarian dalam penilaian latihan industri. Oleh itu, sistem 'Indus-Train' telah dibangunkan oleh...
Solid State Phenomena, 2018
Concrete incorporated with waste paper fibres (WPF) was studied to get the initial information of... more Concrete incorporated with waste paper fibres (WPF) was studied to get the initial information of compressive strength before doing further action to solve a critical problem. Problems such as environmental problem, high production cost and concrete distress were solved to minimise the critical problem. The main objective of the preliminary study is to investigate the compressive strength of concrete with WPF at an appropriate percentage. Some review assessments from previous studies, either on industrial fibres or natural fibres with critics, were done to obtain information and upgrade knowledge. The compressive strength and water absorption result were reported for concrete without and with WPF in proportion of 0.2%, 0.4%, 0.6%, 0.8%, 1.0% and 1.5%. From the observation and testing, the compressive strength of concrete with WPF was decreased with increase in fibre percentage in the concrete. Besides, the water absorption, which always influence the compressive strength, was increa...
Key Engineering Materials, 2018
Cold-formed steel (CFS) is a popular steel-based material for building such as roof truss system ... more Cold-formed steel (CFS) is a popular steel-based material for building such as roof truss system and wall frame panel. CFS with a variety of shapes, cross-sections and thickness produce a lot of advantages such as ease of production, corrosion resistance and high strength to weight ratio. Connection of the CFS sections between them uses screw, bolt and nut, rivet or weld. But, the detail information for the connector in standard either by Eurocode 3 or American Iron and Steel Institute (AISI) is still incomplete especially methods for testing and also lack in the basic knowledge of testing for the connector or combination of connectors. The connector that was used in this study was a self-drilling screw. The objective of the study is to provide the mechanical behaviour information of self-drilling screws from shear and pull-out tests. Both tests utilised Universal Testing Machine with 100 kN capacity to determine the ultimate load and load-deformation behaviour of the self-drilling ...
Materials Today: Proceedings, 2019
Cold-formed steel (CFS) is a steel-based material that is always used as a structural or non-stru... more Cold-formed steel (CFS) is a steel-based material that is always used as a structural or non-structural component in construction activities. In Malaysia, CFS is broadly utilised in roof truss systems to replace timber and hot-rolled steel in residential houses and small industrial buildings. Some of the advantages of CFS include being lightweight, recyclable, and durable and having highest strength-to-weight ratio. It is also becoming excessively popular as a building material. However, CFS with its thin surface tends to fail in buckling on short and slender sections either at the compression or flexural members especially for the web element. In this study, the CFS channel section with 100 mm of the web, 50 mm of flange, 12 mm of lip, 1.55 mm of thickness and without any web stiffener has been selected. With the intention of solving the buckling failure, CFS has been formed as a symmetrical and closed section and filled with oriented strand board (OSB) at the gap of each section. The main objective of this study was to review the previous study of CFS with other materials to produce the composite material and introduce the development and preliminary study of the new section. The CFS with OSB was proposed as a solid symmetrical section to solve the local, distortional, and global buckling, as well as establish a stable and stiffened section under compressed conditions. Therefore, the local and distortional buckling of the compressed member was completely solved by the built-up and box-up of CFS with the OSB section however the CFS channel section with OSB managed to minimise the effect of local and distortional buckling. There was a 9.20%, 5.16% and 5.84% percentage difference of the ultimate load between the CFS without and with OSB sections. The new section reduced the production cost, while also reducing the material usage. It also has the potential to be an innovative section by supporting the Malaysian sustainable development programme.
Regional Conference on Science, Technology and Social Sciences (RCSTSS 2014), 2016
Cold-formed steel channel (CFSC) section is a popular material that used broadly in construction,... more Cold-formed steel channel (CFSC) section is a popular material that used broadly in construction, especially in the roof truss system and non-structural elements. CFSC with a variety of sizes, shapes, thicknesses and grades is becoming admired because it offers several advantages such as lightweight, easy fabrication, fast installation, no formwork, termite resistance and corrosion resistance. The main objective of the study is to investigate the CFSC material properties with a variety of thicknesses. When the CFSC is utilised as in construction structural material, the CFSC material properties must be evaluated for further work, especially in design, failure capacity information and modelling intention. The thickness of the CFSC is important in study to check the failure mode and mechanical properties of the material. The material properties of CFSC are examined by using tensile coupon test specimens and universal tensile testing machine. The CFSC that be used in the study is CFSC 1.0 and CFSC 1.2 with the thickness of 1.0 and 1.2 mm respectively for grade G450. The CFSC is selected by having intermediate end stiffener and lipped. The specimen of tensile coupon test is located on flange, web, upper corner and bottom corner of overall section. From the results, the yield stress, elastic modulus and ultimate stress of the CFSC 1.2 is found higher than of CFSC 1.0.
Materials Science Forum, 2016
Fire accident is considered as the one of most severe environmental hazards to building and infra... more Fire accident is considered as the one of most severe environmental hazards to building and infrastructure. Cold formed steel (CFS) beam has been used extensively as primary load bearing structural member in many applications in the building construction due to high efficiency in term of production, fabrication, and assembling in construction. This material must be well perform in fire incident in term of its integrity and stability of structural for a period of time. Hence, the assessment of the material properties of this material is greatly important in order to predict the performance of this structure under fire incident. The tensile coupon tests of CFS are according to BS EN 10002-1:2001. The CFS material G450 with 1.9 mm thickness is used in this study. The elastic modulus, yield stress, correspondent percentage strain at yield stress, ultimate stress, and correspondent percentage strain of ultimate stress was 200.3 GPa, 540.5 MPa, 0.478 %, 618.8 MPa, and 8.701 % respectively...
Procedia Engineering, 2015
Cold-formed steel (CFS) is the popular structural material used in the building nowadays due to a... more Cold-formed steel (CFS) is the popular structural material used in the building nowadays due to a variety of advantages in its manufacturing, fabrication and erection. CFS with the shape of the channel is selected and formed to be a stub or short column with a height of 240 mm. The main objective of the study is to determine the mechanical behaviour of the CFS channel stub column at post elevated temperature from normal to 1000 0 C. The CFS stub columns are exposed to fire at the furnace and let it cool at room temperature. After 24 hours, the CFS is tested by using Universal Testing Machine (UTM) for ultimate load. When this material is exposed to fire the steel material properties are degraded. The strength of the CFS stub column is recovered to its original normal strength when heated below 600 ºC; beyond this temperature the strength has reduced with recovery of strength less than 65 %. It was observed the column would fail by a combination of local and some distortional buckling. The predictions using Direct Strength Method (DSM) are conservative for all post elevated temperature of the CFS stub column and the column were predicted to fail by distortional buckling. The CFS channels are able to remain the strength after exposing to temperature up to 400 ºC. Beyond that, the capacity was reduced more than 40 % of the normal strength. The prediction with the EC3 yield for temperature up to 400 ºC the prediction is overdesigned and considerably unsafe. But beyond temperature of 400 ºC, it was conservative similar to the Direct Strength Method. The columns are predicted to fail in compression failure.
Proceedings of the International Conference on Science, Technology and Social Sciences (ICSTSS) 2012, 2014
Cartesian coordinate is the most popular coordinate systems compared to polar, cylindrical, and s... more Cartesian coordinate is the most popular coordinate systems compared to polar, cylindrical, and spherical coordinates. This coordinate system is the foundation of analytic geometry, and it has been extensively used in many disciplines such as physics, engineering, astronomy, and many more. In this work, we represent the location of the main part of an Islamic architecture in the East Coast of Malaysia in terms of Cartesian coordinate. The results show that the center of the dome is located at point (0, 0, z 0) with the prayer hall considered as the xy-plane. The Cartesian equations of other boundary in the main part of the Islamic architecture are also formulated.
2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA), 2011
This paper presents the comparison physical study of solid waste of Bottom Ash Aggregate (BAA) an... more This paper presents the comparison physical study of solid waste of Bottom Ash Aggregate (BAA) and Washed Bottom Ash Aggregate (WBAA) as fine aggregate in concrete. The BAA is a waste material that is taken from electric coal power plant and the basic source material of WBAA is a treated bottom ash. The BAA is fully submerged in clean and clear water for 3 days to produce a WBAA with low amount of carbon. This WBAA with low carbon composition is utilised to produce concrete with less percentage of carbon usage. Low amount of carbon can reduce energy in building, reduce environmental impact and can be supported to green material in concrete. So that, this two types of bottom ash were studied their physical properties and then compared. The aim of the study is to investigate the physical comparison of BAA and WBAA in producing concrete or concrete applications. The results of the sieve analysis and fineness modulus of BAA and WBAA were discussed. The calculated of fineness modulus of BAA and WBAA are 4.93 and 3.65 respectively, which are more than 3.5 and it is considered very coarse. Finally, it is concluded that this both aggregate is potential for utilise in concrete and mortar or concrete/mortar application.
MATEC Web of Conferences, 2015
Special concrete is the type of concrete that produced by using waste material or using unusual t... more Special concrete is the type of concrete that produced by using waste material or using unusual techniques/method of preparation. Special concrete made with waste material is becoming popular in a construction site. This is because the special concrete is selected due to quality, integrity, economic factor and environmental factor. The waste glass is selected as an additional material to provide a good in compressive strength value. The compressive strength is the importance of mechanical properties of concrete and typically the concrete is sustained and stiffed in compression load. The significant issue to utilize the waste glass from the automotive windscreen is to improve the strength of concrete. The waste glass is crushed to become 5 mm size and recognised as crushed waste glass that be used in concrete as additional material. The main objective of the study is to determine the appropriate percentage of crushed waste glass in concrete grade, 30 in order to enhance the compressive strength. There are four mixes of concrete that contained of crushed waste glass with percentage of 2 %, 4 %, 6 % and 8 % and one control mix with 0 % of crushed waste glass. As the result, crushed waste glass with an additional 4 % in concrete is reported having a higher value of compressive strength in early and mature stage. In addition, if the percentage of crushed glass wastes in concrete increases and it leads to a reduction in the workability of concrete. 2 Material and method This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.