MECHANISM OF EXPANSION OF CONCRETE DUE TO THE PRESENCE OF DEAD-BURNT CAO AND MGO

被引：256

作者：

CHATTERJI, S

机构：

[1] Dansk Teknologisk Institut

来源：

CEMENT AND CONCRETE RESEARCH | 1995年 / 25卷 / 01期

关键词：

Portland cement;

D O I：

10.1016/0008-8846(94)00111-B

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A new mechanism has been proposed to explain the delayed expansions, due to the presence of dead-burnt CaO or MgO, of Portland cement based materials, The mechanism is based on the crystal growth pressure, the solubility of hydroxide crystals, their growth habits and diffusion of Ca2+ and Mg2+ through the electrical double layer which forms round cement hydration products. In this mechanism the crystal growth pressure is the expanding agent and the others are modifiers.

引用

页码：51 / 56

页数：6

共 10 条

[1]

BRUSCHERA JG, 1978, CEMENT HORMIGON, V49, P1037

[2] VOLUME EXPANSION OF SETTING PLASTER [J].