The influence of the temperature on the rheological properties of self-compacting concrete

Title: The influence of the temperature on the rheological properties of self-compacting concrete
Author(s): W. Brameshuber, S. Uebachs
Paper category : conference
Book title: International RILEM Symposium on Self-Compacting Concrete
Editor(s): O. Wallevik and I. Nielsson
Print-ISBN: 2-912143-42-X
e-ISBN: 2912143713
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 174 - 183
Total Pages: 10
Nb references: 12
Language: English

Abstract: An important factor, which up to now has not received the attention it deserves, is the temperature of fresh Self-Compacting Concrete (SCC). Compared with vibrated concrete, the range of suitable temperatures for fresh concrete is not as broad in the case of SCC. Both, low and high temperatures can trigger phenomena in fresh concrete which make it impossible to cast the concrete properly. The problem here is that the transition from suitable to unsuitable consistencies is not smooth but very abrupt. All it takes for the concrete to lose its self-compacting properties completely is a 1°C difference in the temperature of the fresh concrete. In practice, the sensitivity to temperature is often attributed to the type of the applied superplasticizer based on polycarboxylate-ether (PCE). Therefore investigations with different types of PCE were carried out. The investigated PCE differ with regards to their molecular structures, i. e. its different length of the main (backbone) and side chains. In this paper the results of the investigations are presented.

Online publication: 2003-08-21
Publication type : abstract_only
Public price (Euros): 0.00