Experimental investigations on the structural behaviour of reinforced geopolymer beams produced from recycled construction materials

被引：35

作者：

Akduman, Saban ^{[1
]}

Kocaer, Oznur ^{[1
]}

Aldemir, Alper ^{[1
]}

Sahmaran, Mustafa ^{[1
]}

Yildirim, Gurkan ^{[1
]}

Almahmood, Hanady ^{[2
]}

Ashour, Ashraf ^{[2
]}

机构：

[1] Hacettepe Univ, Dept Civil Engn, Ankara, Turkey

[2] Univ Bradford, Dept Civil & Struct Engn, Bradford, W Yorkshire, England

来源：

JOURNAL OF BUILDING ENGINEERING | 2021年 / 41卷

基金：

欧盟地平线“2020”;

关键词：

Recycled aggregate; Geopolymer concrete; Bending tests; Recycled construction materials; Flexural behaviour; CONCRETE; STRENGTH; PERFORMANCE; EMISSIONS; CARBONATION; AGGREGATE; SELECTION;

D O I：

10.1016/j.jobe.2021.102776

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Concrete requires a vast amount of aggregate and cement production. Although there are some efforts in the literature to reduce the amount of Portland cement in the concrete mixture to lessen the greenhouse gas release, a limited number of studies were conducted to investigate the possibility of using this geopolymer mixtures to serve as a structural component. Therefore, this study firstly aimed to produce geopolymer concrete from construction and demolition waste-based precursors, including masonry units (red clay brick, roof tile, hollow brick, etc.) and glass. In addition, recycled aggregates produced from the concrete waste portion of the CDW were used to obtain 100% recycled construction material on the scale of the binder and aggregate phase. Then, this study investigated the possible use of this proposed geopolymer concrete to produce structural components that perform similar to conventional concrete. Therefore, the structural properties of reinforced geopolymer concrete beams produced from the recycled construction demolition wastes were evaluated in this study by conducting laboratory experiments. To this end, bending tests were performed on reinforced conventional concrete beam specimens and reinforced geopolymer concrete beam specimens. The test observations clearly showed that construction demolition waste could be recycled to produce new constructional components, considering its advantage of promoted sustainability.

引用

页数：12

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