Influência da variação de temperatura no módulo de resiliência de mistura asfáltica.

Abstract

In the design of pavements, the prediction of the tensions and deformations from the traffic and the climate that act on the pavement structure began to be made by calculation methods that take into account the working forces. In the mechanistic dimensioning methods, the resilient modulus of the asphalt coating is usually used as a calculation parameter in the sizing of pavements. The objective of this work was to verify the behavior of 2 (two) types of asphalt mixtures using CAP 50/70 and AMP 55/75 evaluating the mechanical properties of the mixtures were made diametral tensile strength (RT) and resilience modulus ( MR). In the MR assay 6 (six) different temperatures (5°C, 10°C, 15°C, 25°C, 30°C and 45°C) were used. The results showed a higher RT for 55/75 AMP compared to CAP 50/70. The increase in temperature caused a decrease in MR in both the CAP 50/70 and the AMP 55/75. The tensile strength of the asphalt mixtures made with AMP 55/75 is 50% greater than the asphalt mixtures made with CAP 50/70;