Properties and hydration products of lightweight and expansive cements - Part I: Physical and mechanical properties

被引：34
作者：
Lilkov, V
Djabarov, N
Bechev, G
Kolev, K
机构：
[1] Univ Min & Geol, Dept Phys, Sofia 1100, Bulgaria
[2] Bulgarian Acad Sci, Cent Lab Physicochem Mech, BU-1113 Sofia, Bulgaria
来源：
CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 10期
关键词：
cement paste; expansion; cenospheres; physical properties; thermal treatment;
D O I：
10.1016/S0008-8846(99)00150-7
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Results from studies on the physical and mechanical properties of lightweight and expansive cements cured at 20 and 75 degrees C are presented. Lightweight additive (cenospheres from thermoelectric power station "Bobov Dol," Bulgaria) and expansive additive ("Bulexa" with hydroxide type of expansion) were used. The compressive and flexural strength, the gas and water impermeability, and the pore structure of the cement stone of lightweight and expansive cements were investigated. The results are compared with corresponding parameters of cement stone without additives. It was found that the cenospheres are appropriate lightweight additives. The use of expansive additive helps overcome the dry shrinkage of cement stone and strengthens the bond with the bounding surfaces. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1635 / 1640
页数：6
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