Mechanical Behavior of Soil Cement Blends with Osorio Sand

This paper present the analysis made from the axial compression of the mixture between sand, Portland cement and water. In their given proportions, this mixture results in the named “soil cement” in which the amount of sand is strengthened by the bonding of cement through the sand voids, allowing the optimization of sandy soils exposed to large mechanical stresses, such as subgrade and base materials used in pavements. For this purpose, axial and diametral compression tests were conducted, molded with Osorio Sand, a common aggregate found in the south of Brazil with well-known characteristics. The composition were prepared with 3% and 7% of cement and 10% moisture content. For each one of the compositions were molded specimens for three void ratios, testing three specimens of each configuration for five different cure times, totalizing 144 specimens tested. The conclusions shows that the higher the cement percentage and smaller the void ratio, the bigger is the resistance, stabilizing the resistance increase around the fourteenth day. Also, values for initial shear modulus and Young's modulus are presented for the material.