Investigation on Hydration Characteristics of Zinc-doped Portland Cement Pastes

被引：3

作者：

Lia, Xiangguo ^{[1
]}

Yin, Xiaobo ^{[1
]}

Ma, Baoguo ^{[1
]}

Wu, Bei ^{[1
]}

Chen, Quanbin ^{[1
]}

Lv, Yang ^{[1
]}

机构：

[1] Wuhan Univ Technol, Key Lab Silicate Mat Sci & Engn, Minist Educ, Wuhan 430070, Hubei, Peoples R China

来源：

ADVANCES IN BUILDING MATERIALS, PTS 1-3 | 2011年 / 168-170卷

关键词：

Zinc; Cement Paste; Hydration Heat; Retardation;

D O I：

10.4028/www.scientific.net/AMR.168-170.623

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Compressive strength, setting time, hydration heat and hydration product were investigated to evaluate the effects of Zn(2+) ion concentrations and the anion of zinc salts on the hydration characteristics of Portland cement paste. The results show that the hydration characteristics of zinc-doped cement pastes depend on Zn(2+) ion concentrations and the anion of salts. With the incorporation of ZnCl(2), the hydration heat, exothermic rate and the early-age strength of cement pastes were reduced, the arrival time of the highest temperature was delayed, and little negative influences on the compressive strength at 28 days were observed. The total hydration did not decrease incorporating ZnSO(4); the hydration exothermic process was delayed. There were little negative influences on the compressive strength of the samples at 3 days and 28 days. Moreover, for the samples with the same Zn concentration, the retardation effect of ZnCl(2) samples was stronger than that of ZnSO(4) samples.

引用

页码：623 / 627

页数：5

共 8 条

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