Drying shrinkage and cracking resistance of concrete made with ternary cementitious components

被引：89

作者：

Hu, Xiang ^{[1
,2
]}

Shi, Zhenguo ^{[1
,3
,4
]}

Shi, Caijun ^{[1
]}

Wu, Zemei ^{[1
]}

Tong, Baihui ^{[1
]}

Ou, Zhihua ^{[5
]}

de Schutter, Geert ^{[2
]}

机构：

[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China

[2] Univ Ghent, Dept Struct Engn, Magnel Lab Concrete Res, B-9052 Ghent, Belgium

[3] Univ Aarhus, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark

[4] Univ Aarhus, Dept Chem, DK-8000 Aarhus C, Denmark

[5] Hunan Univ Technol, Sch Civil Engn, Zhuzhou 412007, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 149卷

基金：

中国国家自然科学基金;

关键词：

Compressive strength; Ternary cementitious system; Free drying shrinkage; Restrained shrinkage; Cracking resistance; HIGH-STRENGTH CONCRETE; BLAST-FURNACE SLAG; FLY-ASH; SILICA FUME; COMPRESSIVE STRENGTH; SUPERPLASTICIZER; AGE; MICROSTRUCTURE; PERFORMANCE; DURABILITY;

D O I：

10.1016/j.conbuildmat.2017.05.113

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The compressive strength, free and restrained drying shrinkage and cracking resistance of concrete under drying condition were investigated for ternary cementitious systems containing Portland cement, slag and fly ash. The restrained shrinkage test (ring test) was carried out following ASTM C1581. The results showed that the increased replacement level of slag or fly ash from 0 to 50% led to a gradual decrease in 28d compressive strength of concrete. The free drying shrinkage increased with the increase of slag content, but reduced with the fly ash content. The cracking resistance was well related to the free drying shrinkage of concrete, other factors such as strength also showed certain effects on cracking resistance of concrete. The cracking resistance of concrete was enhanced with the addition of fly ash while weakened with the slag replacement level up to 50%. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：406 / 415

页数：10

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