Ensaios triaxiais em composto oriundo de resíduos sólidos urbanos

Results of drainage triaxial tests performed on an automatic equipment are presented in this paper. Samples of urban solid waste were used, which were then manually sorted and then composted in the open air. The specimens were made with 2 and 3 inches in diameter, with height greater than twice the diameter, with particle sizes x 9mm, compacted in the specific dry mass and humidity. The confining stresses applied were 100, 150, 200 and 300 kPa, for samples that were not screened in the laboratory and 25, 50, 100 and 200 KPa, for sieved samples and separated in different sizes. The results of the tests presented values ​​of friction angles between 36 ° and 45 ° and of cohesion intercept between 10 and 37 kPa, compatible with the values ​​of shear strength parameters of urban solid waste. The device used to avoid contamination in the equipment by leachate produced by the sample from solid wastes worked correctly, and there is no contact of the relevant parts of the equipment with the leachate produced.