Autogenous shrinkage of high strength lightweight aggregate concrete

被引：0

作者：

Ding Q. ^{[1
]}

Tian Y. ^{[1
]}

Wang F. ^{[1
]}

Zhang F. ^{[1
]}

Hu S. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Wuhan University of Technology

来源：

Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2005年 / 20卷 / 4期

关键词：

Autogenous shrinkage; High strength lightweight aggregate concrete; Lightweight aggregate; Volume rate;

D O I：

10.1007/BF02841302

中图分类号：

学科分类号：

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 90 d 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：2

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