Recycling MSWI FA as addition for clay brick
Date
2019Author
Voišnienė, Violeta
Kizinievič, Olga
Kizinievič, Viktor
Metadata
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The paper analyses the possibilities of recycling municipal solid waste incineration (MSWI) fly ash in clay brick manufacture. The paper analyses the effect of MWSI fly ash (FA) on physical-mechanical characteristics, environmental toxicity of clay bricks. The clay bricks were prepared by adding 2.5-7.5 % of FA and firing them at 1000 C temperature. Physical and mechanical characteristics of clay brick change depending on the content of FA added: shrinkage, density and compressive strength reduce, water absorption and effective porosity increase. Clay bricks containing 2.5-5 % FA do not exceed the limit values of inert substances according to the Waste Directive 2003/33/EC. According to the test results and taking into consideration clay brick physical - mechanical characteristics and environmental toxicity, the recommended content of the addition to the moulding compound is 2.5-5 % FA.