CRACKING TENDENCY OF CONCRETES WITH BLASTFURNACE SLAG CEMENTS DUE TO OUTFLOW OF HEAT OF HYDRATION.

Rupert Springenschmid, R. Breitenbuecher, W. Kussmann

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

For relatively thick structural concrete members it has hitherto been normal practice to use low-heat cements in order to limit the temperature rise during hydration. To reduce cracking due to temperature changes, however, it is not only important to keep the temperature rise low; the stresses due to restraint deformation and the development of the tensile strength of the concrete are also of importance. The cracking tendency of concretes made with ten portland cements and portland blastfurnace cements obtained from three different plants was investigated on concrete specimens in a cracking frame. The investigations revealed the following: When clinker was used which yielded a portland cement that resulted in a high cracking temperature of the test specimen, the cracking tendency could be reduced by the intergrinding of granular blastfurnace slag with the clinker.

Original languageEnglish
Pages (from-to)817-821
Number of pages5
JournalBetonwerk und Fertigteil-Technik/Concrete Precasting Plant and Technology
Volume53
Issue number12
StatePublished - Dec 1987
Externally publishedYes

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