A Case of Abnormally Slow Hardening Concrete for Tunnel Lining

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Title: A Case of Abnormally Slow Hardening Concrete for Tunnel Lining

Author(s): Lewis H. Tuthill, Robert F. Adams, Shelly N. Bailyey, and Ronald W. Smith

Publication: Journal Proceedings

Volume: 57

Issue: 3

Appears on pages(s): 1091-1110

Keywords: none

Date: 3/1/1961

Abstract:
When job concrete does not set for several days there is usually a reason. When the correct reason is not found, the blame may fall where it is undeserved but worse still, nothing is learned to prevent a recurrence. This paper describes such an experience and the related testing which shows that one cause of belated hardening, when a lignin-base water-reducing admixture is used, is too little SO3 in the cement.