By Wilson Acchar, Sheyla K. J. Marques

This publication proposes using waste from oil drilling and sugar cane bagasse ash within the construction of ecologically pleasant soil-cement bricks. It bargains a plausible replacement to the conventional bricks available to buy, which use wooden as gas: production bricks from waste is more cost effective and doesn't require the intake of bushes and forests. It additionally proposes an alternative choice to the present discharging of the above-mentioned sorts of waste in sanitary landfills, fending off extra environmental problems.

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For the silica content to become amorphous phase, ash must be fired at temperatures below 700 °C for one hour (Macedo 2009). However, Martinera Hernandez et al. 2000 state that the combustion temperature of agricultural waste should be between 400 and 800 °C in order to avoid the formation of crystalline phases of silica (product from the high combustion temperatures), and below 600 °C, the percentage of amorphous silica is high. Sugarcanne bagasse ash with firing temperatures above 800 °C shows high crystallinity with quartz and mullite peaks.

5 X-ray Fluorescence Determining the chemical composition of materials is of great importance for their characterization. This analysis is of little use if some physical data are not provided or without knowing the mineralogical species present in raw materials. For being a very reproducible, fast, and accurate instrumental technique, X-ray fluorescence (XRF) is the method of choice for determining the chemical composition of materials (Barba et al. 1997). 074 mm, corresponding to ABNT # 200 sieve and dried in an oven (110 °C) for 24 h.

3 Mass Loss by Immersion of Solid Bricks The guidelines of ME 26—IPT/BNH—mass loss determination by wetting and drying of soil-cement bricks—Test method, have been followed. 5, bricks showed mass loss within standards specified by legislation, which establishes mass loss for soil-cement bricks of 5 %. It was observed that bricks molded with maximum waste content obtained lower mass loss and as the waste content is decreased in the formulation, bricks showed greater mass loss. 4 Mass Loss by Immersion of Hollow Bricks The guidelines of ME 26—IPT/BNH—mass loss determination by wetting and drying of soil-cement bricks—Test method, have been followed.

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