Effect of chemical admixture on durability of concrete

被引：0
作者：
Cui J. [1 ]
机构：
[1] Shijiazhuang University of Applied Technology, Shijiazhuang
来源：
Chemical Engineering Transactions | 2016年 / 55卷
关键词：
Adiabatic temperature rise of concretes - Anti carbonations - Cracking performance - Durability of concretes - Effect of chemicals - External environments - Internal defects - Polycarboxylate water reducers;
D O I：
10.3303/CET1655074
中图分类号：
学科分类号：
摘要：
In this paper, the effect of the polynaphthaene sulphonate type water reducer (PSWR) and new type polycarboxylate water reducer (PAWR) on the internal pore structure, internal defects and forces of resistance to external environmental of concrete are fully compared and analyzed. The effect of PAWR on improving the durability of concrete was revealed. The test result showed that compared with PSWR, PAWR can improve the pore structure and pore size distribution of concrete grout, improve the density of concrete, reduce the adiabatic temperature rise of concrete, optimize the hydration heat curve of cement, reduce the shrinkage and deformation of concrete, improve concrete anti-cracking performance and volume stability, to reduce the internal defects of concrete; at the same time, but also to improve the ability of the concrete, including anti-carbonation, frost resistance, chloride ion erosion resistance and steel protection in different degree, as well as to enhance the resistance of concrete to the external environment, thereby greatly improving the durability of concrete. Copyright © 2016, AIDIC Servizi S.r.l.
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页码：439 / 444
页数：5
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