Reply to S. Chatterji's discussion on “frost action in cement in the presence of de-icers”
✍ Scribed by G.G. Litvan
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 99 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
✦ Synopsis
Dr. Chatterji raises the important question of mechanical breakdown due to freeze-thaw action. My understanding of the phenomenon can be summarized as follows.
📜 SIMILAR VOLUMES
In this paper Dr. Litvan seems to be proposing an explanation of the effect of dilute salt solution on cement paste during freezing. At least to some of us, the following points do not seem to be clear. Perhaps Dr. Litvan will comment on these points.
The authors are very grateful to Chatterji as his remarks provide a welcome opportunity to clarify some points of our paper. According to Chatterji's, in the C3A-gyps~m-water system, we would have attributed "the first part of the second high activity period to ettringite formation." Moreover, Chat
With 23% of metakaolinite the mixture of expansive cement really contained a substantially smaller quantity of gypsum rock than the theoretically possible formation of ettringite should anticipate. The charged proportion of gypsum rock may rather cause the formation of monosulDhate, with some reserv
In regard to Dr. Chatterji's comments, the author agrees that many investigators including Lea have pointed out the detrimental effect on strength associated with gypsum formation during sulfate attack on portland cement concrete. In the earlier literature, however, the strength loss due to gypsum f