Properties of treated recycled aggregates and its influence on concrete strength characteristics

被引：155
|
作者：
Saravanakumar, P. [1 ]
Abhiram, K. [1 ]
Manoj, B. [1 ]
机构：
[1] SASTRA Univ, Sch Civil Engn, Thanjavur 613401, India
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 111卷
关键词：
Recycled aggregate; Presoaking surface treatment method; Silica fume impregnating method; Recycled aggregate concrete; Compressive strength; COARSE AGGREGATE;
D O I：
10.1016/j.conbuildmat.2016.02.064
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Utilization of recycled aggregate (RA) from crushed concrete wastes as alternative to natural aggregate in construction industry solve the construction and demolition waste (C&DW) disposal problems and reduces the gap between the demand and supply. The adhered mortar affects the properties of RA to significant level. This paper has studied the characteristics of recycled aggregates retrieved from crushed old concrete obtained from demolished structures, and five different presoaking surface treatment method and silica fume impregnating method to improve the properties of the recycled aggregates and its effect on recycled aggregate concrete (RAC). From experimental results it was observed that after treatment there was a significant improvement in the physical and mechanical properties of RA because of adhered mortar removal. The compressive strength was also significantly improved by using treated RA in RAC. Hence it is concluded that these treatment methods can be effectively used for the recycled aggregates to improve its characteristics. (C) 2016 Elsevier Ltd. All rights reserved.
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页码：611 / 617
页数：7
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