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Paper Details

Paper Title
Experimental analysis of pervious concrete with high water reducer and fly ash for strength development
Abstract
Pervious concrete technology is a unique and effective means to meet growing environmental demands. By capturing rainwater and allowing it to seep into the ground, pervious concrete is instrumental in recharging groundwater, reducing storm water runoff and meeting Environmental Protection Agency (EPA) storm water regulations. In fact, the use of pervious concrete is among the best management practices recommended by the EPA and by other agencies and geotechnical engineers across the world, for the management of storm water runoff on a regional and local basis. Pervious concrete is a composite material consisting of coarse aggregate, Portland cement, water and chemical admixtures. It is little bit different from the conventional concrete in that it contains little to no fine aggregates. The coarse aggregate usually consists of a single size and is bonded together at its points of contact by a paste formed by the cement and water. The result is a concrete with a high percentage of interconnected voids that, when functioning correctly, permit the rapid percolation of water through the concrete. The main objective of this project work is to study the strength of pervious concrete. To determine an appropriate mix design of pervious concrete at which we can get the optimum strength and permeability characteristics. In this project work, the effect of variation in quantity of a component (sand) in mix design of pervious concrete on its strength is investigated. The goal is to achieve a maximum strength without inhabiting the permeability characteristics of the pervious concrete. For the project study, three mixes were prepared i.e. Control Mix, Mix no 1 and Mix no 2 with varying sand percentage as 2.20 %, 0.0 % and 4.0 % respectively. The mix consisted of ½ inch down coarse aggregate, ordinary Portland cement, fly ash and water. The mix also included admixtures including a high range water reducer (HRWR) and hydration stabilizer. Cylinders and beams specimens were casted for this study. Pervious concrete slab was also casted to perform the infiltration test of pervious concrete pavement. The results of compression test, flexure test and infiltration rate test of the three mixes were then compared to make conclusions about the research study. The results of all the tests performed on the specimens casted for this project work study shows that with increasing the sand percentage in the previous concrete mixes, the strength of the concrete increases but the permeability of the concrete decreases.
Keyword
Pervious concrete technology, high range water reducer, hydration stabilizer and fly ash.
Others Details
Paper Id : 94860
Author Name : Ijaz Ul Haq
Co-Author Name(s) : Fawad Ahmad
Volume/Issue No : Volume 07 Issue 07
Page No : 10-17
DOI Number : DOI:10.21090/IJAERD.94860
License : This work is licensed under a Creative Commons Attribution 4.0 International License.
website : http://www.ijaerd.com/index.php
Impact Factor : 5.71, SJIF-2017
ISSN Details : eISSN: 2348-4470, pISSN:2348-6406
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