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A study of alkali-activated concrete mixes with ground granulated blast furnace slag

Paper Topic: 
General
 
Volume: 
 
 

Pages :
208 - 215

Corresponing Author: 
M.Mavroulidou
 
Authors: 
Mavroulidou M. and Martynkov√° R.
Paper ID: 
gnest_02370
Paper Status: 
Published
Date Paper Accepted: 
24/01/2018
Paper online: 
26/04/2018
Abstract: 

The paper presents a laboratory study of concrete mixes based on the alkali-activation of an industrial by-product, ground granulated blast furnace slag (GGBS). A number of factors potentially affecting the resulting concrete quality in terms of workability and strengths were investigated (namely activator type, molarity, curing conditions and times). The statistical significance of the effect of these factors was supported by ANOVA. Higher workability and strengths (with lower activator concentrations) were obtained for KOH containing mixes. Curing at constant moisture and ambient temperature was successful for most alkaline activators and mixes, which showed good concrete strengths at all curing times; when Na2SiO3 was used in addition to NaOH or KOH activators of moderate to high molarity, strengths exceeded those of Ordinary Portland Cement (CEM-I) concrete of a similar water/cement ratio.

Keywords: 
alkali activated cement concrete, ground granulated blast furnace slag, green construction materials, solid waste management