所属单位：

土木工程学院

发表刊物：

Materials and Design

关键字：

中文关键字：Experiments;Freezing;Pore structure; Reinforced co，英文关键字：Experiments;Freezing;Pore structure; Reinforced co

摘要：

Properties of plain concrete and steel fiber reinforced concrete (SFRC) (with volume fraction of 0.5%, 1%, 1.5% and2%) subjected to freeze-thaw cycles in water and in the 3.5% NaCl solution were investigated in this paper. Through the experiment, surface damage, weight loss and splitting tensile strength loss of SFRC were measured after different numbers of freeze-thaw circulations. The microstructure and the pore structure of SFRC were analyzed on the basis of scanning electron microscope (SEM) and mercury intrusion experiment. The test results show that the use of steel fiber could improve the pore structure and decelerate the damage of concrete during freeze-thaw cycles. However, the ability of steel fiber to reduce surface scaling of concrete is limited subjected to freeze-thaw cycles in the NaCl solution. Furthermore, the weight loss and the splitting tensile strength loss of concrete tested in the NaCl solution were larger than those in water. It is also shown that the steel fiber content has the great influence on the frost-resisting property of SFRC. When a relatively steel fiber content is introduced (1.5 vol.%), the deterioration process of concrete subjected to the frost damage is considerably reduced.

备注：

牛荻涛

合写作者：

JiangLei,BaiMin,MiaoYuanyao

第一作者：

牛荻涛

论文类型：

期刊论文

卷号：

卷：44

期号：

期：

页面范围：

页：267-273

是否译文：

否

发表时间：

2013-02-01