Development and optimisation of medium strength self-compacting concrete by using pulverised fly ash

Title: Development and optimisation of medium strength self-compacting concrete by using pulverised fly ash
Author(s): M. Sonebi, A. Bahadori-Jahromi, P.J.M. Bartos
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: 514 - 524
Total Pages: 11
Nb references: 16
Language: English

Abstract: This paper describes the developing and evaluating method of medium strength self-compacting concrete (MS-SCC) by incorporation of pulverised fuel ash (PFA). This study aims to facilitate the experimental tests required to optimise MS-SCC, by reducing the number of trial mixes needed to achieve optimum balance among various mixture variables. The MS-SCCs are explored in a series of full factorial designs of experiments. The four key mix constituents used in the models included superplasticizer (SP), cement and PFA filler contents, and water-to-powder ratio (W/P). Responses included slump flow, rheological parameters, V-funnel flow, L-Box, JRing+Orimet test, settlement segregation column test, and the compressive strengths at 7 and 28 days. Twenty-one mixes were prepared to derive the statistical models. The models are valid for mixes made with 0.38 to 0.72 W/P ratio, 60 to 216 kg/m3 of cement content, 183 to 317 kg/m3 of PFA and 0 to 1% of SP, by mass of powder. The results show that a low cost MS-SCC can be achieved with compressive strength at 28 d of 30 to 35 MPa by using up to 210 kg/m3 of PFA.

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