Waste Management

Ecological Soil-Cement Bricks from Waste Materials by Wilson Acchar, Sheyla K. J. Marques

By Wilson Acchar, Sheyla K. J. Marques

This publication proposes using waste from oil drilling and sugar cane bagasse ash within the creation of ecologically pleasant soil-cement bricks. It deals a attainable substitute to the conventional bricks in the marketplace, which use wooden as gasoline: production bricks from waste is less expensive and doesn't require the intake of bushes and forests. It additionally proposes an alternative choice to the present discharging of the above-mentioned varieties of waste in sanitary landfills, fending off extra environmental problems.

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88 38 4 Using Oil Drilling Waste in Soil-Cement Formulations Fig. 9 X-ray diffraction pattern of soil Fig. 11 illustrates the thermogravimetric curve of the soil drilling waste. Two mass loss stages were observed, where the first loss occurs at temperature range of 100–500 °C and can be attributed to the dehydration of volatile organic compounds from hydrocarbons incorporated into the soil drilling waste. The second stage occurs at temperature range of 700–800 °C, which may be related to compound stabilization.

1. About 200 kg of soil was collected and taken to the Laboratory of Physical Properties of Ceramic Materials—UFRN, which was properly characterized. 5 (Fig. 2), leaving in the shade for a period of 7 days. The scale used to dose the soil and water was Precision PR 1000, with maximum weight of 1000 g and accuracy of two decimal places. 0 cm, within standards established by legislation (Fig. 3). The soil drilling waste sample was provided by a oil well company from the state of Rio Grande do Norte.

3 Soil after contraction test showing cracks Fig. 8 mm mesh sieve homogenization so that the final product had uniform color. After this step, drinking water was gradually added and new homogenization was performed. The mixture was transferred from the homogenization container to the conformation matrix; the press mold that gives shape to the element that after pressing is expelled, as can be seen in Fig. 6. Upon completion of the conformation of specimens, elements were placed over a flat surface; after 6 (06) hours from molding, and during the first 7 (07) days, the elements were kept moist by successive wettings (every 2 h) with spray to ensure adequate curing.

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