Materiales de Construcción, Vol 62, No 306 (2012)

Durability of fired clay bricks containing granite powder


https://doi.org/10.3989/mc.2012.60710

G. C. Xavier
Universidade Estadual do Norte Fluminense “Darcy Ribeiro”, Brazil

F. Saboya
Universidade Estadual do Norte Fluminense “Darcy Ribeiro”, Brazil

P. C. Maia
Universidade Estadual do Norte Fluminense “Darcy Ribeiro”, Brazil

J. Alexandre
Universidade Estadual do Norte Fluminense “Darcy Ribeiro”, Brazil

Abstract


Over the past few decades, hundreds of papers have been published on the benefits of including rock powder as a raw material in fired clay brick manufacture. Very little has been written, however, about the durability and long-term behaviour of the final product. As a rule, the ceramic bricks used in construction in developing countries are fired at low temperatures, which detracts from their mechanical performance. This is particularly visible in harsh environmental conditions, where weathering causes severe deterioration. The present paper describes the impact of weathering on clay bricks containing from 0 to 10% granite powder, an industrial by-product. The specimens were fired at 500, 700 or 900 ºC and subsequently exposed to natural environmental conditions or accelerated laboratory weathering. Their physical and mechanical properties were evaluated to determine the effect of the composition of raw materials on fired clay product durability.

Keywords


weather resistance; waste; durability; clay brick

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References


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