Strength Development in Blended Cement Admixed Saline Soil

Abstract

This present paper investigates influential factors (water content, cement content, fly ash content andcuring time) on strength development in saline soil admixed with cement and fly ash. It is found that for aparticular cement content, the strength of admixed saline clay increases with fly ash content and the higheststrength is attained at 25% fly ash. Fly ash disperses the soil-cement clusters into smaller clusters andincreases the reactive surface, hence strength improvement. Based on the clay-water/cement ratio and theparameter equivalent cement content, the strength prediction equation for the cement admixed saline soil isintroduced. For fly ash content less than 25%, fly ash content is equivalent to 0.75 cement content for allcombinations of water content, cement content and fly ash content.