The effect of cement paste volume and w/c ratio on shrinkage strain, water absorption and compressive strength of high performance concrete

被引:101
作者
Piasta, Wojciech [1 ]
Zarzycki, Bartlomiej [1 ]
机构
[1] Kielce Univ Technol, Fac Civil Engn & Architecture, Tysiaclecia PP 7, PL-25314 Kielce, Poland
关键词
High-performance concrete; Cement paste volume; w/c ratio; Water absorption; Compressive strength; Shrinkage strain; INTERFACIAL TRANSITION ZONE; AGGREGATE;
D O I
10.1016/j.conbuildmat.2017.02.033
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Shrinkage strain, compressive strength and water absorption of high performance concrete (HPC) are estimated to high accuracy with linear equations using the w/c ratio and paste volume as variables. A paste volume reduction, thus an increase in coarse aggregate fraction, improves the HPC properties. These changes most likely result from: 1) adsorption of water on a greater surface of aggregate, leading to bulk paste desiccation and densifying and reduction in actual w/c ratio and width of aggregate-cement paste interfacial transition zone; 2) beneficial influence of larger volume of coarse aggregates produced from rocks of high strength and low water absorption. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:395 / 402
页数:8
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