Durability properties of Pervious concrete using Nano silica
Abstract
The durability qualities of porous concrete created with a cement, nano silica(NS), and a minimum of 5% natural river sand as a partial replacement for coarse aggregate were investigated in this work. This study used two coarse aggregate sizes, 20 mm and 10 mm, in a 50:50 ratio. The pervious mixes for w/b ratios 0.34 and 0.30 were subjected to durability tests such as acid impact, alkali impact, and cantabro abrasion loss. The chemical resistance test revealed that the mass decrease percentage was 20.56 percent at 5% HCl solution, 4.23 percent at 5% H2So4 solution, and 0.27 percent for Na2So4 solutions after 180 days of immersion. Sulphuric acid was discovered to be the most harmful of the three chemical environments for all concrete mixtures.The abrasion loss found to be in the range of 18 to 28%.The durability of concrete mixes using nano silica was demonstrated.
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