摘要
采用膨润土等量取代磷酸镁水泥的方法,研究了膨润土对磷酸镁水泥流动度、凝结时间、强度、水化热和早期收缩的影响,并对水化产物进行了分析与讨论。结果表明,膨润土降低了磷酸镁水泥的流动度、凝结时间和强度,为保证施工的可操作性,其掺量应控制在10%以内;膨润土有效降低了磷酸镁水泥的放热速率和放热量,减少了其早期收缩;掺有膨润土的磷酸镁水泥的水化产物中存在膨润土的主要成分蒙脱石和石英;膨润土影响了磷酸镁水泥的水化过程、水化产物的数量及其结晶程度。
By the way of replacing magnesium phosphate cement with bentonite,effect of the bentonite on the fluidity,setting time strength,hydration heat,early shrinkage and hydration products of magnesium phosphate cement was studied in this passage.The results show that the bentonite reduces the fluidity,setting time and strength of magnesium phosphate cement,to ensure the operability of construction,its content should be con-trolled within 1 0%;Bentonite effectively reduced the heat release rate,heat quantity and the early shrinkage of magnesium phosphate cement;The hydration products of magnesium phosphate cement that is mixed with ben-tonite have montmorillonite and quartz ;Bentonite affects hydration process,the amount of hydration products and crystallization degree.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2016年第6期158-162,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51272283)
重庆市自然科学基金重点资助项目(cstc2012jjB50009)
关键词
膨润土
磷酸镁水泥
强度
水化热
早期收缩
水化产物
bentonite
magnesium phosphate cement
compressive strength
the hydration heat
the early shrink-age
the hydration products
