文章基本信息

标题：Structural Assessment of Reinforced Concrete Beams Incorporating Waste Plastic Straws
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作者：Jamal M. Khatib ; Ali Jahami ; Adel Elkordi 等
期刊名称：Environments
电子版ISSN：2076-3298
出版年度：2020
卷号：7
期号：11
页码：96
DOI：10.3390/environments7110096
出版社：MDPI Publishing
摘要：The behavior of reinforced concrete beams containing fibers made of waste plastic straws (WPSs) under the three point bending test is examined. The effect of WPS fiber addition on the compressive and split tensile strength is reported. Four concrete mixes were prepared. The control mix PS-0 had a proportion of 1 cement: 1 sand: 2 coarse aggregate and a water cement ratio of 0.4. In the other three mixes PS-0.5, PS-1.5 and PS-3, 0%, 0.5%, 1.5% and 3% of WPS fiber (by volume) was added respectively. The results show that at 0.5% WPS, there is slight increase in compressive strength. However, beyond 0.5% addition, a decrease in compressive strength is observed. The split tensile strength shows a systematic increase with the addition of WPS fibers. The reinforced concrete beams containing WPS fibers show higher ductility as demonstrated by the larger ultimate tensile strain and ductility index (Δu/Δy). There is a tendency to have more fine cracks with the presence of WPS fibers.
关键词：waste plastic straws; load; deflection; strain measurements; concrete damage; ductility waste plastic straws ; load ; deflection ; strain measurements ; concrete damage ; ductility