Occurrence of Supersaturated Solution with Respect to Ca(OH)₂ in Portland Cement Paste

• KONDO Wakichi

  National Chemical Laboratory for Industry

• FUJII Kinjiro

  National Chemical Laboratory for Industry

Bibliographic Information

Other Title

• セメントの初期水和におけるCa(OH)₂の過飽和溶解
• セメント ノ ショキ スイワ ニ オケル Ca OH 2 ノ カホウワ ヨウカイ

Abstract

As a measure of supersaturation with respect to Ca(OH)₂ in the solution of portland cement paste, W/C=0.6, a saturation ratio was used, which was defined by the ratio of actually determined product m′_Ca²⁺⋅m′²_OH- to the solubility product, both in molalities, at the same ionic strength. For three of five cements examined, there was seen the time correspondance between the occurrence of maximum saturation ratio of about 3 and the beginning of intensive rise of heat liberation rate. This was ture for the cement paste with or without addition of soluble salt after pre-leaching treatment of cement with a large amount of water. For the other two cements, the maximum saturation ratio was established in an hour, while the rise of heat liberation rate was two to three hours late.

Journal

• Journal of the Ceramic Association, Japan

  Journal of the Ceramic Association, Japan 82 (946), 333-336, 1974

  The Ceramic Society of Japan

Details

• CRID: 1390001205248744832
• NII Article ID: 110002308198
• NII Book ID: AN00245650
• DOI: 10.2109/jcersj1950.82.946_333
• ISSN: 18842127
• ISSN: 00090255
• NDL BIB ID: 7652346
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7652346
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1950/82/946/82_946_333/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed