Concrete rheology: knowledge and challenges

Title: Concrete rheology: knowledge and challenges
Author(s): Chiara F. Ferraris
Paper category : conference
Book title: 2nd International RILEM Symposium on Advances in Concrete through Science and Engineering
Editor(s): J. Marchand, B. Bissonnette, R. Gagné, M. Jolin and F. Paradis
Print-ISBN: 2-35158-003-6
e-ISBN: 2351580028
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 141 - 149
Total Pages: 9
Nb references: 18
Language: English

Abstract: The design of concrete with properties specified for an application is not a new concept, but it has taken on a new meaning with the wide use of special concretes, such as self compacting concrete (SCC). General terms such as “flow under its own weight” and “filling capacity”, or workability, flowability, compactibility, stability, finishability, pumpability, and/or consistency are currently used interchangeably without a definition based on fundamental properties measurement. Several attempts have been made to better relate fresh concrete properties with measurable quantities. Some researchers treat fresh concrete as a fluid and used fluid rheology methods to describe concrete flow. This approach, the most fundamental one, is reviewed in this paper. The main topics that will be addressed are: 1) a review of the fundamental definitions of quantities used to uniquely describe the flow of concrete; 2) an overview of the tests that are commonly used to measure the rheology of fresh concrete, partially based also on the completed comparison of concrete rheometers sponsored by ACI; and 3) discussion of the challenges that must be overcome to bring rheology to the construction site. A conclusion will present some thoughts on research needed.

Online publication: 2006-08-02
Classification: 2.2 Theme 2: From Fresh to Hardened Concrete
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580028.010