Estudo de tijolo solo cimento com aplicação de resíduos de emulsão asfáltica elastomérica

Abstract

The addition of chemical substances to the soil triggers reactions that influence its properties, such as temperature, evaporation and ionic exchange. Hydrocarbon-contaminated soils represent a challenge due to their environmental impact and high remediation costs. The recycling of asphalt mixtures has become a viable option for reusing these materials. Soil-cement brick, resulting from a mixture of soil, Portland cement and water, is a resistant and durable material, with good impermeability. The study aimed to select the ideal soil sample to produce cement soil bricks with the incorporation of elastomeric asphalt emulsion residue, which was justified by its physical and chemical characteristics, standing out as sandy loam soil, with high levels of carbon dioxide. silicon and aluminum. Thermogravimetric and X-ray diffraction analyzes confirmed the mineralogical composition of the soil, demonstrating the presence of quartz and kaolinite. The interaction between its components, such as iron and aluminum oxides, affected the electrical properties of the soil, influencing the adsorption of bituminous residues. The study included compressive strength and moisture absorption tests on the bricks. The results showed uniformity, good compressive strength and low moisture absorption, confirming the effectiveness of the soil choice and manufacturing process. The interaction between the soil-cement brick and the bituminous residue resulted in a water-repellent surface. This hydrophobicity was achieved by the interaction of soil and residue components, creating an impermeable surface. These results highlight the interaction of soil and the addition of waste in the manufacture of soil-cement bricks, altering their final properties.