摘要
钙矾石不仅是水泥重要的水化产物之一,也是混凝土遭受外界硫酸盐侵蚀的主要产物。经过高温养护的混凝土在后期也会重新形成大量的钙矾石,而且早期生成的钙矾石并不稳定,容易发生重结晶。对混凝土而言,从加水搅拌到以后的养护、使用过程中可能始终伴随着钙矾石的形成。本文对混凝土中钙矾石的形成方式进行了归纳,阐述了钙矾石的不同形成机理,并探讨了钙矾石的形成条件及影响因素。
Ettringite is one of the hydration products of cement and it is also the primary product of sulfate attack. In the high- temperature heat curing concrete, ettringite can reform during the later period. Ettringite formed earlier in the concrete is unstable and it tends to recrystallize. This paper summarizes the types of ettringite formation and elaborates the mechanism. In this paper, the conditions and influential factors are also discussed.
出处
《建筑科学》
北大核心
2007年第11期105-110,97,共7页
Building Science
关键词
钙矾石
硫酸盐侵蚀
重结晶
ettringite
sulfate attack
recrystallize
