Using recycled aggregates in the concrete offers advantages in many areas such as waste managemen... more Using recycled aggregates in the concrete offers advantages in many areas such as waste management, energy save and natural resources, conservation of ecological balance, low CO2 emissions, and users are encouraged in this regard to use these materials. In this study, the profit / loss account arising in the structural design phase was investigated when Reclaimed Asphalt Pavement (RAP), which is limited to use in Roller Compacted Concrete (RCC) pavements, was used as coarse aggregate. RAP materials were used as coarse aggregates by the levels of 0%, 15% and 20% and mechanical properties such as compressive strength, flexural strength, splitting tensile strength and modulus of elasticity were investigated. In the last stage, the mechanical properties obtained from these experimental studies were entered into KENSLABS software as input, and the slab layer thicknesses were determined according to three different subgrade conditions and a certain fatigue criterion. According to the results, it has been determined that the use of RAP at a level of 20% is a serious reducing effect on mechanical properties and and the use of RAP at a level of 15% does not bring a great economic benefit but it is reasonable to use it as coarse aggregate in RCC mixes in consideration of environmental effects.
Solid wastes are important environmental problem all over the World. Consumption of the plastic s... more Solid wastes are important environmental problem all over the World. Consumption of the plastic solid waste covers big portion within the total solid waste. Although a numerous plastic material is subjected to the recycling process, it is not easy to be destroyed by nature. One of the recommended way to prevent is to utilize as an aggregate in cement-based material. There are many researches on use of recycling rubber in concrete. However, studies on recycling of waste electrical cable rubber (WECR) in concrete is insufficient although there are many research on waste tyre rubbers in concrete. In this study, fine aggregate was replaced with WECR which were 5%, 10%, and 15 % of the total aggregate volume in the concrete and researched workability, unit weight, water absorption, compressive strength, flexural strength, ultrasonic pulse velocity, modulus of elasticity, and abrasion resistance of concrete. As a result of experimental studies, increase of WECR amount in concrete increases workability due to lack of adherence between cement paste and WECR, and hydrophobic structure of WECR while it influences negatively mechanical properties of concrete. It is possible to use WECR in concrete taking into account the reduction in mechanical properties.
SUMMARY: An environmentally friendly approach to the disposal of waste materials, a difficult iss... more SUMMARY: An environmentally friendly approach to the disposal of waste materials, a difficult issue to cope with in today's world, would only be possible through a useful recycling process. Floor tile waste aggregates (FTWA) in concrete applications can substantially reduce the negative environmental effects and exhaustion of the natural resources. In order to reuse and so to reduce the volume of the ceramic waste which occurs during the production of ceramic, it is possible to use as aggregates in the production of concrete. In this study, the mechanical and physical properties of concrete produced from floor tile waste aggregates were investigated. C30/37 quality concrete was produced by using two different floor tile waste. The properties of these concretes were compared to produced reference concrete. These results of the tests show that the concrete produced from floor tile waste has some more better physical and mechanical characteristics than conventional concrete, thus a new application area to selective recycling of ceramic floor tile waste and its use in the production of concrete.
Using recycled aggregates in the concrete offers advantages in many areas such as waste managemen... more Using recycled aggregates in the concrete offers advantages in many areas such as waste management, energy save and natural resources, conservation of ecological balance, low CO2 emissions, and users are encouraged in this regard to use these materials. In this study, the profit / loss account arising in the structural design phase was investigated when Reclaimed Asphalt Pavement (RAP), which is limited to use in Roller Compacted Concrete (RCC) pavements, was used as coarse aggregate. RAP materials were used as coarse aggregates by the levels of 0%, 15% and 20% and mechanical properties such as compressive strength, flexural strength, splitting tensile strength and modulus of elasticity were investigated. In the last stage, the mechanical properties obtained from these experimental studies were entered into KENSLABS software as input, and the slab layer thicknesses were determined according to three different subgrade conditions and a certain fatigue criterion. According to the results, it has been determined that the use of RAP at a level of 20% is a serious reducing effect on mechanical properties and and the use of RAP at a level of 15% does not bring a great economic benefit but it is reasonable to use it as coarse aggregate in RCC mixes in consideration of environmental effects.
Solid wastes are important environmental problem all over the World. Consumption of the plastic s... more Solid wastes are important environmental problem all over the World. Consumption of the plastic solid waste covers big portion within the total solid waste. Although a numerous plastic material is subjected to the recycling process, it is not easy to be destroyed by nature. One of the recommended way to prevent is to utilize as an aggregate in cement-based material. There are many researches on use of recycling rubber in concrete. However, studies on recycling of waste electrical cable rubber (WECR) in concrete is insufficient although there are many research on waste tyre rubbers in concrete. In this study, fine aggregate was replaced with WECR which were 5%, 10%, and 15 % of the total aggregate volume in the concrete and researched workability, unit weight, water absorption, compressive strength, flexural strength, ultrasonic pulse velocity, modulus of elasticity, and abrasion resistance of concrete. As a result of experimental studies, increase of WECR amount in concrete increases workability due to lack of adherence between cement paste and WECR, and hydrophobic structure of WECR while it influences negatively mechanical properties of concrete. It is possible to use WECR in concrete taking into account the reduction in mechanical properties.
SUMMARY: An environmentally friendly approach to the disposal of waste materials, a difficult iss... more SUMMARY: An environmentally friendly approach to the disposal of waste materials, a difficult issue to cope with in today's world, would only be possible through a useful recycling process. Floor tile waste aggregates (FTWA) in concrete applications can substantially reduce the negative environmental effects and exhaustion of the natural resources. In order to reuse and so to reduce the volume of the ceramic waste which occurs during the production of ceramic, it is possible to use as aggregates in the production of concrete. In this study, the mechanical and physical properties of concrete produced from floor tile waste aggregates were investigated. C30/37 quality concrete was produced by using two different floor tile waste. The properties of these concretes were compared to produced reference concrete. These results of the tests show that the concrete produced from floor tile waste has some more better physical and mechanical characteristics than conventional concrete, thus a new application area to selective recycling of ceramic floor tile waste and its use in the production of concrete.
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