Effect of H2O2 as the Foaming Agent on the Geopolymer Mortar using Curing of Room Temperature

Abstract

Road construction on the peat has been an issue in the world. Yet, due to the reason of topography and alignment through a peat environment, this work remains to be done. The issue in this study was the bearing capacity of soil due to high water content, creep, deformation high acid, so that was required to find the alternative material to support the base of the road with the light material. This study used fly ash as the alternative material in the foam geopolymer mortar that utilized hydrogen peroxide (H2O2) with the percentage of 1%, 2%, and 3% fly ash, respectively, as the blowing foaming agent in fresh geopolymer mortar. The alkaline solution was prepared using the solution of Na2SiO3 and NaOH with a ratio of 2.0 and 2.5, respectively. The room temperature was used as the curing for 14 days. The results showed that the optimum compressive strength was obtained about 3.53 MPa with a Na2SiO3/NaOH of 2.5 and the percentage of H2O2 as 1% fly ash. Furthermore, optimum density was obtained about 0.61 gr/cm3 with a Na2SiO3/NaOH of 2.5 and the percentage of H2O2 as 3% fly ash.