Open Access

REVIEW

A Review on the Utilization of Waste Material for Autoclaved Aerated Concrete Production^†

by R. A. Rahman¹, A. Fazlizan^1,*, N. Asim¹, A. Thongtha²

1 Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, Bangi, Selangor, 43600, Malaysia
2 Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand

* Corresponding Author: A. Fazlizan. Email:

(This article belongs to the Special Issue: Renewable materials for sustainable development)

Journal of Renewable Materials 2021, 9(1), 61-72. https://doi.org/10.32604/jrm.2021.013296

Received 01 August 2020; Accepted 13 October 2020; Issue published 30 November 2020

Abstract

Autoclaved aerated concrete (AAC) has become more attractive due to its excellent and environmental-friendly properties in building construction. AAC is relatively lightweight, possesses lower thermal conductivity, higher heat resistance, lower shrinkage, and fasten construction than normal concrete. AAC is a combination of silica sand, cement, gypsum, lime, water, and an expansion agent. To improve its physical and mechanical properties and reduce its production cost, tremendous innovations where waste materials were utilized as partial replacement of AAC materials were done. This paper is intended to present the literature on the utilization of waste materials as a means of a partial replacement in AAC materials to enhance its physical and mechanical properties and thermal performance. The physical properties such as microstructure and mechanical properties such as density, compressive strength, water absorption are presented to classify the investigation that has been done in such innovations. Apart from that, the discussion on innovations to improve its thermal performance was also presented. Based on the review, an increase of AAC application causes much waste at construction sites and recycling concrete waste powder into wall concrete; particularly, an AAC was not frequently practiced in construction.

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