Influence of coarse aggregate angularity on the mechanical performance of cement-based materials

被引：34
|
作者：
Lee, Seung Jae [1 ]
Lee, Chang Hoon [2 ]
Shin, Moochul [2 ]
Bhattacharya, Sumana [1 ]
Su, Yu Feng [1 ]
机构：
[1] Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33199 USA
[2] Western New England Univ, Dept Civil & Environm Engn, Springfield, MA 01119 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 204卷
关键词：
Morphology; Aggregate angularity; Coarse aggregate; Cement-based materials; Sphericity; Roundness; Image-based morphology analysis; SURFACE-ROUGHNESS; SHAPE-ANALYSIS; CONCRETE; SPHERICITY; ROUNDNESS; INTERFACE;
D O I：
10.1016/j.conbuildmat.2019.01.135
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study aims to fundamentally understand the influence of angularity of coarse aggregate on the mechanical performance of cement-based materials. Three hypotheses are postulated to address the influence of aggregate angularity that negatively impacts the small-strain performances, while positively influences the property in the ultimate state at a large strain level. The morphology of two types of coarse aggregates is systemically quantified using an image-based analysis. This study experimentally corroborates the efficacy of the postulated hypotheses through a set of laboratory tests on cement-based cylinders. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：184 / 192
页数：9
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