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

Sonebi, M., Bahadori-Jahromi, Ali and Bartos, P. J. M. (2003) Development and optimisation of medium strength self-compacting concrete by using pulverised fly ash. In: International RILEM Symposium on Self-Compacting Concrete. RILEM Publications, pp. 514-524. ISBN 291214342X

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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.

Item Type: Book Section
Subjects: Construction and engineering > Built environment
Construction and engineering > Civil and structural engineering
Depositing User: Rod Pow
Date Deposited: 15 Jan 2015 14:46
Last Modified: 25 May 2017 13:08
URI: http://repository.uwl.ac.uk/id/eprint/1075

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