Properties of recycled concrete aggregate and their influence in new concrete production

被引：460

作者：

Verian, Kho Pin ^{[1
]}

Ashraf, Warda ^{[2
]}

Cao, Yizheng ^{[3
]}

机构：

[1] Laticrete Int Inc, One Laticrete Pk North, Bethany, CT 06524 USA

[2] Univ Maine, Dept Civil & Environm Engn, Orono, ME 04469 USA

[3] Albany Mol Res Inc, SSCI, W Lafayette, IN 47906 USA

来源：

RESOURCES CONSERVATION AND RECYCLING | 2018年 / 133卷

关键词：

Recycled concrete aggregate (RCA); Compressive strength; Fly ash; Specific gravity; Absorption; 2-STAGE MIXING APPROACH; BLAST-FURNACE SLAG; SELF-COMPACTING CONCRETE; LIFE-CYCLE ASSESSMENT; FLY-ASH; COARSE AGGREGATE; DURABILITY PROPERTIES; MECHANICAL-PROPERTIES; COMPRESSIVE STRENGTH; PORTLAND-CEMENT;

D O I：

10.1016/j.resconrec.2018.02.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This manuscript presents a review of the potential and challenge of using recycled concrete aggregate (RCA) as the substitute for natural aggregate (NA) in concrete mixtures. Using RCA in concrete preserves the environment by reducing the geed for opening new aggregate quarries and decreases the amount of construction waste that goes into landfill. The properties of RCA such as specific gravity, absorption, and the amount of contaminant present in it contribute to the strength and durability of concrete. The quality of RCA depends on the features of the original aggregate and the condition of the demolished concrete. Some researchers have reported that the use of RCA degrades concrete properties while others have successfully produced RCA concrete with a performance that matched normal concrete (NC). In addition to the influence of RCA to concrete properties, this paper also evaluates multiple techniques to improve the performance of RCA concrete, reported cost savings in concrete production and recommendations regarding the application of RCA in concrete.

引用

页码：30 / 49

页数：20

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