Study on Properties of Unfired Brick Fabricated from Fly-Ash and Bottom-Ash from a Thermal Power Plant

The advantages of using waste sources from thermal power plants to produce unfired bricks bring the dual effect of not losing the wasteland area, solving the problem of environmental pollution, and creating a source of raw materials for production. Fly ash and bottom ash from a thermal power plant are used in the production of unfired bricks in this study. These two raw were used to substitute cement and crush stone, respectively at several contents in brick mix proportion. The properties of unfired brick were evaluated according to the results of physical tests along with compression, bending, abrasion, adhesion, and pull-out tests. The test results of bottom ash and fly ash showed the quality and applicability based on physical and chemical properties. Testing on bricks corresponding to different grades shows that the properties of bricks have a clear classification.