Abstract
Cement consumption is increasing day by day due to the enormous expansion in the infrastructure system. Geopolymer concrete has been used to reduce the use of Portland cement. The purpose of the present work is to study some parameters related to the geopolymer binder material and could influence on the properties of ambient cured Geopolymer Pervious Concrete (GPPC). The parameters studied are: The amount of slag, concentration of NaOH, ratio of Na2SiO3/NaOH, and alkaline activator solution to slag ratio. The amount of slag investigated was (300, 325 and 350). Concentration or the molarity (M) of NaOH ranged between 8 M to14 M with increment of 2 M, ratio of sodium silicate to sodium hydroxide varied from 1 to 3.5 with increase of 0.5, and alkaline solution to slag ratio was (0.25, 0.30 and 0.35). The experimental investigations were performed to measure the percentage of the flow of fresh GPPC, total void content, density, and compressive strength at the age of 3 days. The results have shown that slag-based GPPC ambient cured have gained high compressive strength at early age that could be sufficient for practical applications in road construction.
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