Effect of BaCl2 on Mechanical Properties of High Ductile Alkali-Activated Slag-Based Composites

被引：0
|
作者：
Kan L. [1 ]
Liu N. [1 ]
Wang F. [2 ]
机构：
[1] School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai
[2] College of Civil Engineering, Tongji University, Shanghai
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2023年 / 26卷 / 12期
关键词：
alkali-activated slag; BaCl[!sub]2[!/sub; fiber-reinforced; mechanical property; retarder;
D O I：
10.3969/j.issn.1007-9629.2023.12.009
中图分类号：
学科分类号：
摘要：
By uniaxial tensile and compressive tests, the effects of BaCl2 on the mechanical properties of high ductile alkali-activated slag-based composite(HDASC)were investigated. The results indicate that the addition of BaCl2 with 3.0% content makes the setting time prolongate to 109 min. The increase in BaCl2 content leads to gradual decrease in the initial cracking strength, tensile strength and compressive strength, especially the addition of 3.0% BaCl2 corresponds to a 50.0% decrease ratio, nevertheless, the tensile strain almost maintains the range between 6.24%-9.66%. The microscopic testing results show that the addition of BaCl2 incurs the decrease of hydration reaction degree of HDASC and the increase of pore numbers, thereby reducing the compactness of matrix and weakening the bonding between fibers and matrix. © 2023 Tongji University. All rights reserved.
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页码：1303 / 1309
页数：6
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