Influence of Reclaimed Asphalt Pavement Aggregates on Strength and Durability Properties of Concrete Mixes in Rigid Pavements

Q4 Engineering

The Journal of Engineering Research Pub Date : 2023-10-19 DOI:10.53540/tjer.vol20iss2pp1-11

Rohit Vasudeva, Dr M Abdul Akbar

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引用次数: 0

Abstract

The use of Reclaimed Asphalt Pavement (RAP) aggregates in rigid pavements instead of conventional aggregates in Himalayan regions solves the problem associated with shrinking natural resources and dumping of wastes. This study studied the effect of partial replacement of conventional coarse aggregates by RAP in Dry Lean Concrete (DLC) mixes suitable for rigid pavements. A total of 114 specimens (cubical and cylindrical) were cast and tested for mechanical and durability properties as per ASTM and IS code guidelines, partially replaced with CRAP by 25%, 50%, and 75% by weight. The simultaneous effect of fly ash addition by partial replacement of cement by it was also studied. The study concludes that 25% partial replacement by CRAP with 10% fly ash as partial replacement of cement led to the achievement of the strength benchmark as mandated by IRC SP 44 (2014). It was also observed that durability properties such as resistance to acid attack, sulphate attack and carbonation also improved in DLC mixes, including CRAP and fly ash, when compared to control mixes.

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再生沥青路面骨料对刚性路面混凝土混合料强度和耐久性的影响

在喜马拉雅地区，在刚性路面上使用再生沥青路面(RAP)骨料代替传统骨料解决了与自然资源萎缩和废物倾倒相关的问题。本研究研究了适用于刚性路面的干贫混凝土(DLC)混合料中RAP部分替代传统粗骨料的效果。根据ASTM和IS规范指南，共铸造了114个试件(立方体和圆柱形)，并对其进行了机械和耐久性性能测试，部分用重量分别为25%、50%和75%的CRAP代替。研究了粉煤灰部分替代水泥的同时掺加效果。研究得出结论，25%的废水泥部分替代，10%的粉煤灰部分替代水泥，达到了IRC SP 44(2014)规定的强度基准。与对照混合物相比，DLC混合物(包括CRAP和粉煤灰)的耐酸侵蚀、硫酸盐侵蚀和碳酸化等耐久性性能也得到了改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The Journal of Engineering Research Engineering-Engineering (all)

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： The Journal of Engineering Research (TJER) is envisaged as a refereed international publication of Sultan Qaboos University, Sultanate of Oman. The Journal is to provide a medium through which Engineering Researchers and Scholars from around the world would be able to publish their scholarly applied and/or fundamental research works.