Caracterização do módulo de resiliência e da deformação permanente de três solos e misturas solo-brita

Abstract

This dissertation aims at characterizing the resilient modulus and the permanent deformation of three soils and one gravel, and five mixtures proposed from the combination of these materials based on current Brazilian standards, aiming to fit them into the granulometric bands for use in base layer or sub-base of pavement. Soils were identified by the MCT test, as soil LG ', NA' and NG ', the first of lateritic behavior and the other two non-lateritic behavior, the gravel used has three different nominal sizes. The main objective of this research is to analyze the applicability of soil-gravel standards, through mechanical tests. Resilient modulus and permanent deformation tests were performed and analyzes were made on the resulting accommodation. The permanent deformation tests (DP) were performed with a minimum application of 150,000 load cycles, at 2 Hz frequency. The RM test, were performed at 1 Hz, as specified by standard. Data from the DP assay were generally satisfactory. However, the pure NA 'and NG' soils and the M1 mixture resulted in deformation values in the order of 4 mm, for the higher levels of tension considered to be a high value, when compared to the typical allowable total rutting of 12.5 mm. The resilience modulus data, most of which were in accordance with range indicated in the literature, and on the study of the shakedown, the materials presented behavior A and B, showing no rupture in optimum moisture.