Fabricação de solo-cimento com adição de resíduos de madeira provenientes da construção civil

Abstract

Traditional constructive solutions and new materials originated from the deconstruction of the natural environment are nowadays being combined to minimize the impact of extracting new materials from mineral deposits. Learning from the ancient experiences of traditional communities around the world that employ earth as a construction material, sometimes associated to vegetal fibers, and applying the concept of recycling waste at the source, this document analyzes the association of construction wood waste (RMCC, in Portuguese) and soil-cement. Based on the literature review, experiments related to specimen molding, dimensional variation analysis, axial compression, flexure test and dynamic elasticity modulus were carried out. The new material (soil-cement-RMCC) performance was compared to the soil-cement reference material and, when available, to standards and results from previous studies. Specimens of the reference material and of soil-cement with 1.5, 3.0, 5.0 and 6.5% of RMCC, in weight, were prepared. The results of the tests on the specimens demonstrated that the addition of RMCC do not contribute for the dimensional variation and increases the water absorption by up to 15% if compared to the reference material. In general, the mechanical resistance and the elasticity modulus become gradationally lower as RMCC load increases. In the context of this study, the results obtained for the soil-cement-RMCC properties render this material eligible to be used as a construction material. Further investigations related to this material are encouraged in order to confirm and extend the results obtained.