Development of Fired Clay Bricks by Coal-Preparation Refuse

Abstract

It is important to find a possibility for utilizing coal-preparation refuse CPR generated from coal mines in terms of environmental and economic points of view. In this study, a possibility for manufacturing fired clay bricks FCBs by CPR instead of clay was investigated. Firing shrinkage ratio, compressive strength, and water absorption ratio of test samples manufactured using CPR in the open air were measured. It was found that firing shrinkage ratio and compressive strength decrease with increasing the addition amount of CPR, while water absorption ratio is almost constant under the entire addition amount ranges of that. The test sample manufactured was nearly similar to the 1st grade clay bricks of Korea Standard L ceramics 4201.

Unusual water transport properties of some traditional Scottish shale bricks

“…It is common practice in Scottish vernacular construction to apply lime or cement renders to the external face of brick masonry so that the variable appearance of these shale bricks was of little consequence. Colliery shale bricks have been produced in several other countries (including USA, France and Germany), and there is now renewed interest in colliery brick manufacture for waste utilisation, notably in China [8] and Korea [9].…”