Abstract
Permeable concrete is a special concrete which consists of cement, coarse aggregate and water. Due to rapid growth of globalization and urbanization, the construction of concrete roads increasing day by day which leads to decrease in percolation of storm water, surface runoff occurring to the decrease in ground water table. In previous concrete, single sized aggregate is used to maintain the void ratio in the concrete. The cement paste is bonded with aggregate with a void ratio of 20%. In this investigation, concrete of M20 grade with water cement ratio of 0.38 is used. The properties of concrete were increased by using Rice husk ash and Bagasse ash in changed percentages (10%, 20%, 30%) by weight of cement and with the combination of rice husk ash and bagasse ash 10% (5%RA + 5%BA), 20%(10%RA+10%BA), 30%(15%RA+15%BA) are used. The compressive strength of cubes, split tensile of cylinders are casted, tested after 7 days and 28 days. After testing, the optimum percentages of replacement of admixtures are found in the Permeable concrete. Therefore the strength and durability properties of permeable concrete with the addition of bagasse ash and rice husk ash with partial replacement of cement are compared with conventional concrete.
Highlights
Due to construction of rigid pavements, the rainfall water in surface runoff can not be percolate in to the ground surface which leads to ground water depletion
Pitroda et al, [3] in his experimental study, the effect of Rice Husk Ash properties of Permeable concrete with various w/c ratios 0.3, 0.36, 0.40; the compressive & flexural strength varies depending upon the w/c ratio
Specimens are tested for compressive strength and split tensile strength of concrete
Summary
Due to construction of rigid pavements, the rainfall water in surface runoff can not be percolate in to the ground surface which leads to ground water depletion. To over come the ground water depletion, the solution is Permeable pavements which percolates the runoff from rain and storm water and which increase the ground water table and aquifers to make the sufficient water for sustainable use. Bagasse ash and Rice Husk Ash have pozzolonic property, which is about 62% and 90% silica dioxide (SiO2) can be utilized as limited replacement with cement. Kawade et al [1] studied that utilization of bagasse ash will increase its strength up to 15% with replacement of cement beyond its limits it start decreasing its strength properties. Pitroda et al, [3] in his experimental study, the effect of Rice Husk Ash properties of Permeable concrete with various w/c ratios 0.3, 0.36, 0.40; the compressive & flexural strength varies depending upon the w/c ratio. It has been shown that up to 10% replacement of RHA is increased beyond it starts decreasing
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