Delayed ettringite formation : A concern for precast concrete ?
Delayed ettringite formation : A concern for precast concrete ?
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钙矾石形成延迟：预制混凝土的一个问题？
DOI：
10.15554/pcij.07011996.26.30
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发表时间：
1996
期刊：
影响因子：
1.1
通讯作者：
W. Hime
中科院分区：
文献类型：
--
作者：
W. Hime
作者研究了预制混凝土制品的内部硫酸盐侵蚀。这些失效的原因已被确定为延迟的钙矾石侵蚀，这是一个过程，其中在塑性波特兰水泥混凝土中钙矾石的正常形成被延迟或形成然后分解，仅在暴露于水数月或数年后在硬化的混凝土中破坏性地改革。根据对过去几年发生的事件的调查，说明了这种现象明显是新现象的原因以及防止这种现象的方法。
Internal sulfate attack on precast concrete products has been investigated by the author. The cause for these failures has been identified as delayed ettringite attack, a process whereby the normal formation of ettringite in plastic portland cement concrete is either delayed or is formed and then decomposed, only to destructively reform in the hardened concrete after months or years of exposure to water. Reasons for the apparent newness of the phenomenon, and methods for preventing it, are given on the basis of investigations of incidences during the past several years.