Journal Published Online: 28 December 2016
Volume 5, Issue 1

Effect of Pozzolanic Admixtures on the Fresh Properties of Cement-Based Foam

CODEN: ACEMF9

Abstract

This experimental study was conducted to investigate the influence of pozzolanic admixtures on the fresh properties of cement-based foams. The cement-based foam mixes were tested at three different cast densities namely, 800, 600, and 400 kg/m3. Along with a reference mix, other series were prepared in which fly ash, silica fume, and metakaolin were added to the binder at up to 10 % and 20 % replacement by cement mass. The Marsh cone test and the flow cone test techniques were employed to measure the flowability and spreadability for 21 cement-based foam mixes. The results show that the addition of pozzolanic admixtures increases the flow time and the longest time recorded with metakaolin. A linear relationship of spread with the density of the mixes was found in this study. It was also found that with the addition of fly ash and silica fume, there was an increase in the demand for foam content. On the other hand, adding metakaolin reduced this demand. Based on the experimental results, an equation to predict the spreadability of the mixes with pozzolanic admixtures has been suggested.

Author Information

Batool, F.
Dept. of Civil Engineering, NED Univ. of Engineering and Technology, Karachi, PK
Bindiganavile, V.
Dept. of Civil and Environmental Engineering, Univ. of Alberta, Edmonton, AB, CA
Pages: 13
Price: $25.00
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Stock #: ACEM20160006
ISSN: 2165-3984
DOI: 10.1520/ACEM20160006