Estudo de dosagens de matriz de agregado fino.

Abstract

Fatigue damage is one of the main problems found in asphalt pavements, being directly influenced by the dynamic loading and the constant change in the climatic conditions to which the asphalt mixture is subjected. This problem is related to smallscale phenomena and is affected by the binder content, the characteristics of the aggregates and the properties of the binderaggregate interface. This study investigated the fine aggregate matrix (FAM) design methods proposed by Kim, Castelo Branco, Karki and Coutinho, defining a method that best estimates the binder content that is present in the thin part of a conventional asphalt mixture. As a conclusion, it was verified that all the methods estimated different binder contents and it was possible to prove that some of them are deficient in the consideration of the properties of the materials used.