Cracking behavior of concrete with shrinkage reducing admixtures and PVA fibers

被引：219

作者：

Passuello, Alexandra ^{[1
]}

Moriconi, Giacomo ^{[1
]}

Shah, Surendra P. ^{[2
]}

机构：

[1] Polytech Univ Marche, Dept Phys & Mat & Terr Engn, I-60131 Ancona, AN, Italy

[2] Northwestern Univ, Ctr Adv Cement Based Mat, Evanston, IL 60208 USA

来源：

CEMENT & CONCRETE COMPOSITES | 2009年 / 31卷 / 10期

关键词：

Concrete; Shrinkage; Cracking; Shrinkage reducing admixtures; PVA fibers; Prediction of cracking; RESIDUAL-STRESS;

D O I：

10.1016/j.cemconcomp.2009.08.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The reduction of the risk of cracking has been evaluated by the reduction of drying shrinkage due to the addition of shrinkage reducing admixtures (SRA) and by the increase of the crack opening resistance due to the addition of fibers. Both technologies have been considered individually and used in combination. It has been noted that the addition of SRA delays the time of cracking and the addition of fiber reduces the crack opening. However, the addition of the shrinkage reducing admixture (SRA) to the fiber-reinforced concrete has led the concrete to a better cracking behavior even when the fiber dosage had been reduced. Finally, the cracking time has been predicted by applying two different theoretical approaches. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：699 / 704

页数：6

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