Effect of olive mill waste addition on the properties of porous fired clay bricks using Taguchi method
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2016
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Abstract
Production of porous clay bricks lightened by adding olive mill waste as a pore making additive was investigated. Factors influencing the brick manufacturing process were analyzed by an experimental design, Taguchi method, to find out the most favorable conditions for the production of bricks. The optimum process conditions for brick preparation were investigated by studying the effects of mixture ratios (0, 5 and 10 wt%) and firing temperatures (850, 950 and 1050 °C) on the physical, thermal and mechanical properties of the bricks. Apparent density, bulk density, apparent porosity, water absorption, compressive strength, thermal conductivity, microstructure and crystalline phase formations of the fired brick samples were measured. It was found that the use of 10% waste addition reduced the bulk density of the samples up to 1.45 g/cm3. As the porosities increased from 30.8 to 47.0%, the compressive strengths decreased from 36.9 to 10.26 MPa at firing temperature of 950 °C. The thermal conductivities of samples fired at the same temperature showed a decrease of 31% from 0.638 to 0.436 W/mK, which is hopeful for heat insulation in the buildings. Increasing of the firing temperature also affected their mechanical and physical properties. This study showed that the olive mill waste could be used as a pore maker in brick production. © 2016 Elsevier Ltd
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Aluminum Silicates , Compressive Strength , Construction Materials , Food-Processing Industry , Industrial Waste , Olea , Porosity , Temperature , Thermal Conductivity , Waste Management , Waste Products , Compressive strength , Porosity , Taguchi methods , Thermal conductivity , Thermal insulation , Water absorption , aluminum silicate , clay , industrial waste , waste , Bulk density , Clay bricks , Fired-clay bricks , Firing temperature , Manufacturing process , Olive-mill waste , Porous clay brick , Property , Recycling , Taguchi's methods , absorption , bulk density , compressive strength , construction material , experimental design , insulation , mechanical property , numerical method , physical property , porosity , temperature effect , thermal conductivity , bulk density , compressive strength , experimental design , olive , porosity , recycling , thermal conductivity , water absorption , building material , chemistry , compressive strength , food industry , industrial waste , olive tree , procedures , temperature , thermal conductivity , waste , waste management , Brick