Project testing SCC- segregation test methods

Title: Project testing SCC- segregation test methods
Author(s): F. Cussigh, M. Sonebi, G. De Schutter
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: 311 - 322
Total Pages: 12
Nb references: 9
Language: English

Abstract: The study described is a part of a large European research project on self-compacting concrete: "TESTING - SCC". The University of Paisley, Ghent University and GTM Construction are responsible for Task 3-3 on the investigation of resistance of segregation. The objectives are: to identify suitable tests for assessment and measurement of the segregation resistance of SCC, for use in the lab and on site; to identify characteristic test values for each test; focusing on static segregation. Three test methods, described in RILEM compendium of tests report TC 145 WSM, have been examined: settlement column test, sieve stability test, and penetration test.
In order to assess sensitivity and variability of these test methods, the three partners evaluated in parallel a common programme of tests on mixes designed to have different levels of segregation resistance. From a satisfactorily stable control SCC mix the segregation was increased by adding 10 and 20 L/m3 of water, or 1 and 2 kg/m3 of superplasticizer. The segregation was also measured on hardened concrete and compared to the results obtained from fresh concrete. Interesting results have been obtained showing acceptable repeatability, reproducibility and sensitivity and the next step will be to compare segregation measurements on fresh SCC and real in-situ segregation.

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