Heat of hydration of self-compacting concrete

Title: Heat of hydration of self-compacting concrete
Author(s): A.-M. Poppe, G. De Schutter
Paper category : conference
Book title: International RILEM Conference on Early Age Cracking in Cementitious Systems
Editor(s): K. Kovler and A. Bentur
Print-ISBN: 2-912143-29-2
e-ISBN: 2351580362
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 71 - 78
Total Pages: 8
Nb references: 5
Language: English

Abstract: The two most essential properties of self-compacting concrete (SCC) are a high flowability and a high segregation resistance. The use of admixtures in combination with a high concentration of fine particles makes it possible to combine these apparently incompatible properties. However, the high concentration of cement and fillers, often with puzzolanic properties, can lead to the development of a high heat of hydration. This might induce rather high thermal stresses in the hardening concrete element, possibly causing early age thermal cracking. In literature, the incorporation of non-puzzolanic filler is sometimes recommended, however only very few data concerning the heat of hydration are given. In an experimental research program adiabatic hydration tests are carried out in order to evaluate the heat of hydration of SCC. The results are compared with data obtained for traditional concrete. The applicability to SCC of an existing hydration model is investigated. Based on the obtained results, the heat generation in hardening SCC is studied in more detail. Recommendations are given for further research.

Online publication: 2010-06-02
Publication type : full_text
Public price (Euros): 0.00