Chapter Seven

Utilization of Fly Ash in Ceramic Brickmaking

Abstract

The effects of the use of red ceramic clay, gang sand, and feldspar on the utilization of MSWI fly ash in ceramic brickmaking are tested. An orthogonal test, analysis of ceramic brick performance based on R20 and R32 and analysis of performance variation of bricks based on R20 as a function of temperature, ceramic brick microstructure variation and transformation of phases, and a leaching toxicity analysis of bricks based on R20, are described. Different raw materials including red ceramic clay, gang sand and feldspar are utilized separately to make ceramic brick in order to cover the treatment cost of fly ash. The major chemical constituents of red ceramic clay, such as SiO

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