Critical review of recent development in fiber reinforced adobe bricks for sustainable construction
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REVIEW
Critical review of recent development in fiber reinforced adobe bricks for sustainable construction Mahgoub M. SALIH, Adelaja I. OSOFERO* , Mohammed S. IMBABI School of Engineering, University of Aberdeen, Aberdeen AB24 3FX, UK Corresponding author. E-mail: [email protected]
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© The Author(s) 2020. This article is published with open access at link.springer.com and journal.hep.com.cn
ABSTRACT This paper presents a state-of-the-art review of research on the utilization of fibers (predominantly derived from waste materials) as reinforcement in adobe brick production. Recycling of these wastes provides sustainable construction materials and helps to protect the environment. Specimen preparation and test procedures are outlined. The effects of addition of these wastes on the physical and mechanical properties of adobe bricks as presented in the literature, are investigated. The main results for each additive are presented and discussed. It is concluded that improved adobe brick properties can be expected with the addition of combination of waste additives. The use of waste materials in the construction industry is generally of interest and useful for engineers and designers seeking sustainable solutions in construction. It is also of interest to researchers actively seeking to develop methodical approaches to quantifying, optimising and testing the performance in use of such waste material additives. KEYWORDS
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adobe bricks, fibre reinforced bricks, green, sustainable building material, physical and mechanical properties
Introduction
Adobe is a composite construction material made of earth mixed with water and organic materials such as straw and dung. It has been used in construction across the world for thousands of years. Adobe continues to present an environmentally sustainable alternative that avoids the use of energy intensive, high carbon content materials. Features of adobe bricks include their availability, low cost, unsophisticated production technique and, in many applications, acceptable physical and mechanical properties. The adequacy and durability of adobe construction is well documented [1–5]. However, adobe has some undesirable properties such as affinity for water, brittle behavior and low compressive and tensile strength compared to other mainstream construction materials [6–9]. Such deficiencies may be overcome by reinforcing the soil mixture with additives or stabilizers. Moreover, the rising demand and popularity for use of sustainable, lightweight and affordable construction materials drives the need to investigate how this can be achieved to benefit the environment while ensuring Article history: Received Nov 25, 2018; Accepted Jul 11, 2019
compliance with regulatory standards. As a result, the use of additives in adobe bricks has been the focus of many studies. Much of the research in this area is based on the hypothesis that brick properties can be enhanced by the addition of natural and waste materials. In addition, use of such additives in reinforcing construction materials is a
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