Avaliação do comportamento resiliente de um cascalho laterítico do Mato Grosso empregado em estrutura de pavimento dimensionado pelo MeDiNa

Abstract

The vehicle loading that affects pavements, as well as the loads frequency and duration, go through intense changes, demanding better performance of materials that compound a road structure. In this conxtet, the development of a new pavements design method is essential, since the current method does not cover the most recurrent rupture mechanisms in the country. The study aimed to analyze the resilient behavior of a soil from Mato Grosso, Brazil, known as laterite gravel with granular texture. This material is widely employed as a pavement layer and tends to behave satisfactorily. The material was compacted at intermediate energy and tested for resilient modulus (RM). The RM of the studied soil presented high average value, around 330 MPa, presenting a good bearing capacity and potential use as base course layer in local pavements. If compared to recurrent solution, a slight disadvantage of this current soil is perceived, towards the pavements collapse due the surface fatigue cracking.