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Buildings 2018, 8(2), 15; https://doi.org/10.3390/buildings8020015

Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate

1
Department of Civil Engineering, PAN AFRICAN UNIVERSITY for Basic Sciences, Technology and Innovation (PAUSTI), 62000 00200 Nairobi, Kenya
2
School of Civil Engineering, Ethiopian Institute of Technology-Mekelle (EiT-M), Mekelle University, 231 Mekelle, Ethiopia
3
Rongo University, 103-40404 Rongo, Kenya
4
Commission for University Education, 54999-00200 Nairobi, Kenya
*
Author to whom correspondence should be addressed.
Received: 20 December 2017 / Revised: 12 January 2018 / Accepted: 24 January 2018 / Published: 26 January 2018

Abstract

This experimental research is focused on the development of self-compacting mortar incorporating recycled glass aggregate (SCM-RGA) as partial substitution of fine aggregate (wt 0%, 10%, 20%, 30%, 40% and 50%). The fresh and hardened mechanical properties as well as durability of SCM-RGA mixes were investigated. Limestone powder (LP) was used as filler that constitutes 20% of the powder volume to reduce the amount of cement. The SCM-RGA mixtures were designed based on Japanese mix design method. The experimental test results showed that the slump flow of SCM-RGA mixes decreased and V-funnel flow time increased when the content of recycled glass aggregate (RGA) increased. The bulk density, compressive strength, flexural strength, water absorption and sorptivity of SCM-RGA mixes were decreased as RGA content increased. Moreover, the accelerated mortar bar test results showed that the expansion due to alkali–silica reaction (ASR) of SCM-RGA mixes increased as the content of RGA increased although the expansion of all mixes were within acceptable limit and potentially innocuous. In conclusion, up to 30% of RGA can be successfully integrated in SCM mixes that offers comparable strength performance, sorptivity enhancement and without long term detrimental ASR effect, and thus, contributes towards sustainable solid waste management, conservation of natural resources and environmental protection. View Full-Text
Keywords: recycled glass aggregate; self-compacting concrete; solid waste management; sorptivity; alkali–silica-reaction; self-compacting mortar; strength; flow time; slump flow recycled glass aggregate; self-compacting concrete; solid waste management; sorptivity; alkali–silica-reaction; self-compacting mortar; strength; flow time; slump flow
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Tuaum, A.; Shitote, S.; Oyawa, W. Experimental Study of Self-Compacting Mortar Incorporating Recycled Glass Aggregate. Buildings 2018, 8, 15.

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