摘要
CaO-SiO2-H2O蒸压体系产物是加气混凝土抗压强度的主要来源,本文利用XRD和综合热分析研究了不同Al掺量下CaO-SiO2-H2O蒸压体系产物组成与抗压强度的关系。结果表明:Al掺量较小时对CaO-SiO2-H2O蒸压体系的抗压强度和产物组成几乎无影响,而Al/(Al+Si)摩尔比>0.06时,随Al掺量的增大,体系抗压强度逐渐降低,产物中托勃莫来石的量减少,生成的水榴石的量逐渐增加,且Al的掺入对钙硅反应产生抑制。
the products of CaO-SiO2-H2O autoclaving system are the mainly source of compressive strength in the autoclaved aerated concrete, the relationship between the phase compositions and compressive strength of the CaO- Si02-H2O autoclaving system was investigated by XRD and comprehensive thermal analysis in this study. The results reveal that small aluminum addition has almost no influence on the phase compositions and compressive strength, while when Al/（Al＋Si） molar ratio〉0.06, the compressive strength decreases, the content of tobermorite increases and more hydrogarnet forms for more aluminum incorporation. Thus the reaction between CaO and SiO2 is retarded in this case.
出处
《广州建筑》
2015年第5期30-33,共4页
GUANGZHOU ARCHITECTURE
基金
国家十二五科技支撑计划(2012BAJ20B01-03)
广东省重大科技专项(2013A011401008)
国家自然科学基金项目(51208209)
关键词
蒸压加气混凝土
托勃莫来石
水榴石
抗压强度
autoclaved aerated concrete
tobermorite
hydrogarnet
compressive strength
