Supplementary cementitious materials
Supplementary cementitious materials
复制标题
DOI：
10.1016/j.cemconres.2010.12.001
复制
发表时间：
2011-12-01
影响因子：
11.4
通讯作者：
Hooton, R. D.
中科院分区：
文献类型：
--
作者：
Lothenbach, Barbara;Scrivener, Karen;Hooton, R. D.
使用富含二氧化硅的SCM影响形成的水合物的量和种类，从而影响这些材料的体积、孔隙率和最终的耐久性。在通常使用的替代水平下，主要变化是C-S-H相中较低的Ca/Si比和氢氧钙石的消耗。富含氧化铝的SCM增加了C-S-H中的Al吸收和含铝酸盐水合物的量。一般来说，相组合的变化很好地捕获的热力学建模，虽然更好的知识的C-S-H是需要的。在早期的年龄，“填料”的影响导致增加反应的熟料相。SCMs的反应开始较晚，并且随着pH和温度的增加而增强。玻璃相的组成、细度和数量也起着重要的作用。由于所用SCM的范围不同，成分、粒度、暴露条件（如温度或相对湿度）之间的一般关系变得越来越重要。(C)2010爱思唯尔有限公司保留所有权利。
The use of silica rich SCMs influences the amount and kind of hydrates formed and thus the volume, the porosity and finally the durability of these materials. At the levels of substitution normally used, major changes are the lower Ca/Si ratio in the C-S-H phase and consumption of portlandite. Alumina-rich SCMs increase the Al-uptake in C-S-H and the amounts of aluminate containing hydrates. In general the changes in phase assemblages are well captured by thermodynamic modelling, although better knowledge of the C-S-H is needed.At early ages, "filler" effects lead to an increased reaction of the clinker phases. Reaction of SCMs starts later and is enhanced with pH and temperature. Composition, fineness and the amount of glassy phase play also an important role. Due to the diverse range of SCM used, generic relations between composition, particle size, exposure conditions as temperature or relative humidity become increasingly crucial. (C) 2010 Elsevier Ltd. All rights reserved.