Impact of recycled concrete aggregates on the strength and durability properties of pervious concrete

被引：6

作者：

Nazeer, Mudasir ^{[1
]}

Kapoor, Kanish ^{[1
]}

Singh, Surinder Pal ^{[1
]}

机构：

[1] Dr BR Ambedkar Natl Inst Technol Jalandhar, Dept Civil Engn, Jalandhar, India

来源：

MAGAZINE OF CONCRETE RESEARCH | 2023年 / 76卷 / 06期

关键词：

abrasion resistance; acid resistance; freeze-thaw; mechanical properties; microstructural analysis; pervious concrete; UN SDG 6: Clean water and sanitation; UN SDG 11: Sustainable cities and communities; UN SDG 13: Climate action; SELF-COMPACTING CONCRETE; ASH;

D O I：

10.1680/jmacr.23.00089

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An investigation was designed to assess the performance of pervious concrete prepared with fly ash (FA) and recycled concrete aggregates (RCA) in place of Portland cement (PC) and natural aggregates (NA). The percentage of NA replacement with RCA was varied (0%, 50% and 100%), while the percentage of FA substitution was fixed at 10%. Various fresh (workability and consistency), mechanical (compressive strength, split tensile and shear strength), durability (abrasion resistance, freeze-thaw resistance, flexure and acid resistance) and microstructural properties of the pervious concretes were evaluated after different curing periods. The findings showed that the incorporation of RCA at different levels and partial substitution of FA was desirable pervious concrete used for structural and pavement construction purposes. The incorporation of 10% FA in addition to higher levels of RCA was found to be particularly beneficial in refining the microstructure of pervious concrete. A homogenous microstructure with dense and layered calcium silicate hydrate and calcium hydroxide was observed for the mix made with 10% FA and 100% RCA.

引用

页码：272 / 291

页数：20

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