Hydration kinetics of phosphorus slag-cement paste

被引：0

作者：

Xia Chen

Kunhe Fang

Huaquan Yang

Hua Peng

机构：

[1] Wuhan University,School of Civil Engineering

[2] Changjiang River Scientific Research Institute,Department of Mateials and Structure

来源：

Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2011年 / 26卷

关键词：

phosphorus slag; hydration kinetics; cement; micro structure; mechanism;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Hydration characteristics of Portland cement paste with phosphorus slag powder incorporated and hydration kinetics was investigated with SEM, X-ray diffraction, DTA-TG and calorimeter II 80. Results showed that phosphorus slag powder could reduce total amount of hydration products yet had little influence on the type of hydration products. The total amount of heat of hydration was decreased by 49.11% and the final setting was postponed by 2.28 h when phosphorus slag powder substituted 35% Portland cement by mass. The accelerating stage of this composite paste was controlled by catalysis, decreasing stage controlled by both catalysis and diffusion while stabilizing stage by diffusion alone. Hydration resistance and activation energy were reduced and hydration speed was accelerated.

引用

页码：142 / 146

页数：4

共 36 条

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