Variação do módulo resiliente em um solo vermelho da formação Guabirotuba após a adição de cal para fins de pavimentação

Abstract

Considering the current practices in use to increase the resilient modulus of soils, which consist mostly of soil-cement mixtures and in view of its high cost, this research aims to estimate the variation caused by the addition of lime in the resilient modulus of a red soil from the Guabirotuba Formation, soil widely found in the region of the city of Curitiba area, located in the state of Paraná, Brazil. Based on this premise, this research, which consisted of applying repeated loads in different stress pairs through a triaxial press, to observe and analyze, with computational assistance, the variation cause by the lime. It was concluded, through comparison with the resilient modulus data for the red soil without the addition of other components, that the addition of lime results in MR averaging values of 179,02 MPa (64,72% of increase) for 7 days of curing time and, 295,67 MPa (172,33% of increase) for 28 days of curing time.