Effect of phosphate on the hydration of alkali-activated red mud-slag cementitious material

被引：89

作者：

Gong, CM

Yang, NR

机构：

[1] Minist Met Ind, Cent Res Inst Bldg & Construct, Beijing 100088, Peoples R China

[2] Nanjing Univ Chem Technol, Dept Mat Sci, Nanjing 210009, Peoples R China

来源：

CEMENT AND CONCRETE RESEARCH | 2000年 / 30卷 / 07期

关键词：

AARS; hydration; retardation; phosphate;

D O I：

10.1016/S0008-8846(00)00260-X

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of sodium phosphate on the hydration of alkali-activated red mud-slag cementitious material (AARS) is studied through microcalorimeter, X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS). It is shown that sodium phosphate decreases the hydration heat evolution and retards the hydration reaction of AARS effectively. A new phase is found to form in this system. The retarding mechanism is greatly attributed to the forming of this new phase. The composition of the new phase is identified and analyzed. (C) 2000 Elsevier Science Ltd. All rights resented.

引用

页码：1013 / 1016

页数：4