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Utilization of Recycled Coarse Aggregate for Concrete Production

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Utilization of Recycled Coarse Aggregate for Concrete Production

Nyo Nyo Tun


Nyo Nyo Tun "Utilization of Recycled Coarse Aggregate for Concrete Production" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5, August 2018, pp.121-127, URL: https://www.ijtsrd.com/papers/ijtsrd15814.pdf

The utilization of recycled aggregate on compressive strength of concrete is investigated in this research. In the experimental, five types of concrete mixtures were tested: concrete made with natural aggregate as a control concrete and five types of concrete made with natural fine and recycled coarse aggregate (10%, 20%, 30% and 50%) replacement of coarse recycled aggregate). In this research, physical properties tests of each constitutes material are done according to ASTM procedures at laboratory. After that, concrete mix proportioning is done to obtain the specified 28-day characteristics cylinder compressive strength of 20 MPa (cube compressive strength of 25.64 MPa) and 75+ 25 mm slump according to ACI211 method. In this step, trial mixes are prepared using recycled coarse aggregates, with respect to the 7-day and 28-day compressive strength results. And then, appropriate mix design is selected for specified strength. Moreover, 120 concrete specimens for mix proportion of selected Grade is tested to the 7-day and 28-day compressive strength to establish a standard deviation and their results are compared. For standard deviation, total 720 cubes (120 cubes for each) are cast. In this research, concrete made with 30% recycled coarse aggregate performed best in specified target strength and also in selected slump control among the various proportions

deviation, recycled aggregate, concrete mixture, physical properties, compressive strength

Volume-2 | Issue-5, August 2018
IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470
Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

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