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۱Strength Studies on Glass Fiber Reinforced Recycled Aggregate Concrete
نویسنده(ها):
اطلاعات انتشار: Asian journal of civil engineering، هشتم،شماره۶، December ۲۰۰۷، سال
تعداد صفحات: ۱۲
The transformation from a conventional consumption based society to a sustainable society is urgently required due to the pollution of the natural environment, the exhaustion of the natural resources and the decreasing capacity of the final waste disposal facilities. One of the ways to solve this problem is to use Building Demolished Waste (BDW) concrete as aggregates in structural concrete. The aggregates thus obtained can be called as Recycled Concrete Aggregate (RCA).Concrete is a versatile material with numerous applications, but the only problem with concrete is its brittle behaviour more so in recycled aggregate concrete. This brittleness in concrete can be overcome by dispersing fibers discretely in the material of concrete. In the present work, Glass Fiber Reinforced Recycled Aggregate Concrete (GFRRAC) was developed. The mechanical properties of GFRAC with M20 & M40 grade concretes, for different replacements of Recycled Concrete Aggregate (RCA) in Natural Aggregate (NA) are presented. It was observed that there was 10–17 % increase in split tensile strength and about 10–14 % improvement in flexural strength with fiber addition in recycled aggregate concrete. There is an improvement in the modulus of elasticity of concrete. The values of split, flexure and modulus of elasticity obtained were also compared with the Indian Standard Codal Provisions. The increased energy absorption capacity in GFRRAC indicates higher toughness and better post elastic deformations in the event of seismic actions.
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