Abstract
Solid waste generated during mining is one of the major environmental problems associated with this industrial activity. The best solution to overcome the environmental impact of this waste is to find recycling facilities in mass-produced products that can absorb the large quantities of these available byproducts. The present study shows the feasibility of using the coal waste of Moroccan Jerrada mining in the production of ecological brick. The first step consists of consecutive stages of crushing, grinding and heating at 650°C of the coal waste with a small amount of lime in order to promote the reactive products of elaborated binders. The second step of the process consists of mixing treated coal waste with a small amount of marble dust, sand, gravel, and water, then pressed and dried at room temperature to manufacture a laboratory ecofriendly bricks. The mechanical strength and thermal conductivity are investigated.
Highlights
In many different parts of the world, coal mine waste rocks generated by coal mining affected and damaged the environment due to the huge amount, occupied area, and acid generation [1,2,3,4,5,6,7]
The sample preparation protocol can be resumed as follow: The first step consists of consecutive stages of crushing, grinding and heating at 650°C of the coal waste (CW) with a little amount of lime in order to advance the reactive products of elaborated binders
Coal waste can be used as the main raw material to overcome the environmental impact of this waste
Summary
In many different parts of the world, coal mine waste rocks generated by coal mining (extraction and processing) affected and damaged the environment due to the huge amount, occupied area, and acid generation [1,2,3,4,5,6,7]. The reduction, reuse, recycling, and treatment of mineral processing waste are progressively getting more research and development attention for their contribution to enhancing the durability of the mineral industry. In many areas of the world, there is already a deficiency of natural source material for the production of the conventional bricks. For environmental protection and sustainable development, extensive research concentrated on the use of different types of industrial waste materials with different methods [11]–[13] has been conducted on the production of bricks from waste material; it became the ideal approach to reduce wastes generation
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