Autogenous shrinkage of high strength lightweight aggregate concrete

被引：0

作者：

Ding, QJ ^{[1
]}

Tian, YG ^{[1
]}

Wang, FZ ^{[1
]}

Zhang, F ^{[1
]}

Hu, SG ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2005年 / 20卷 / 04期

关键词：

high strength lightweight aggregate concrete; autogenous shrinkage; lightweight aggregate; volume rate;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characteristic of autogenous shrinkage (AS) and its effect on high strength lightweight aggregate concrete (HSLAC) were studied. The experimental results show that the main shrinkage of high strength concrete is AS and the amount of cement can affect the AS of HSLAC remarkably. At the early stage the AS of HSLAC is lower than that of high strength normal concrete, but it has a large growth at the later stage. The AS of high strength normal concrete becomes stable at 90d age, but HSLAC still has a high AS growth. It is found that adjusting the volume rate of lightweight aggregate, mixing with a proper dosage of fly ash and raising the water saturation degree of lightweight aggregate can markedly reduce the AS rate of HSLAC.

引用

页码：123 / 125

页数：3

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