Estudo comparativo entre o comportamento mecânico de misturas solo-brita com calcário e granito para uso em pavimentação.

Abstract

The scarcity of adequate natural material the layered use of the pavement makes it necessary to use techniques in order to provide resistance and stability to the material. In view of this problem, it is proposed the incorporation of limestone aggregate into the natural soil of the Jaguaribe Valley Region through the granulometric stabilization technique compared to granite aggregate, conventionally used in paving. Households from limestone rocks besides having good mechanical performance are in abundance in the region being an economical and technically viable alternative. Standardized tests were carried out to characterize the soil collected in Morada Nova, the limestone aggregate from the mining company Carbomil and the granite aggregate from the quarry of the Metropolitan Region of Fortaleza. Mr and PD assays were performed with calcitary soil-gravel and granitic gravel mixtures, with composition of 50% of each material, in order to verify the mechanical strength of the materials. The results prove that the material stabilized with limestone aggregate is technically satisfactory for use in flexible floor base layers, presenting lower Permanent Deformations and higher resilience module values when compared to granitic gravel.