The development of technologies that use clean energy and integrated waste management of the residues domestic and industrial aimed a sustainable engineering in the socio-business concepts is an urgent necessity. This present paper has as objective the production of cement composites trace 1:1,2:0,8 (cement : dust stone: gravel) replacing the sand and dust stone for PET waste in the levels of 3, 6, 9, 12 and 15 %, to evaluate the aging time. The materials were characterized using thermal analysis, FTIR and the composites by particle size analysis, unconfined compression strength, among others. The particle size analysis allowed the calculation of fineness modulus, which was 2.59, 1.66, and 3.99 for the dust stone, gravel and PET, respectively. There was a decreasing trend of resistance with the PET increasing in the composition.

No abstract

The generation of waste is a consequence of human action as a result of user and processor of raw materials. In effluents textiles sewage treatment, waste generation, especially the sludge, is a constant making it necessary to use alternatives for its management. This work aims to study the influence of the burning temperature on the thermal decomposition of textile sludge by Thermogravimetry and Differential Thermal Analysis in order to use it as an additive in concrete and / or pre-molded. The TG curves of textile sludge burned at temperatures of 110°C, 400°C, 450°C, 500°C, 550°C and 600°C showed at two to three steps of thermal decomposition. The infrared spectrum showed characteristic bands of SiO2, OH and CH and the spectrum of the sinterized sludge showed the elimination of OH and CH bands.

The interest in the use of industrial waste, such as sludge, has grown as an alternative both to reduce the volume of this environmental liability as in getting a product to be used in construction. This work aims to study the incorporation of waste textile sludge in concrete. The textile sludge was dried, in an oven lab, at 110oC for twenty-four hours and milled in a grinder to acquire adequate granulometry. Samples were prepared for compression strength and water absorption, the ratios 1:2, 1:3, 1:4 and 1:5 with sludge levels of substitution of 3%, 5% and 7% with 7, 28 days of curing. The results showed a tendency to increase the water absorption with increasing amount of textile sludge and decrease one with increasing cure time. Thus for compressive strength decreased with increasing content of aggregates and content of this sludge, according to the following increasing order 1:5 <1:4 <1:3 <1:2.