ABSTRACT
This work evaluated the influence of temperature variation on the mechanical behaviour of asphalt mixtures with sintered aggregate of calcined clay (SACC), which was used as a substitute for pebble, due to the regional shortage of stone material. Also participated in the bituminous composition: asphalt cement AC 50/70, marketed in the Amazonian territory; Portland cement, acting as filler; and three types of sand, which represented the fine aggregates, one from SACC and two from the cities of Manaus and Coari (AM). The granulometry of the blend followed Bailey's method, in order to provide a better interlocking of the particles. The mechanical behaviour at different temperatures was examined by the tests of Tensile Strength (TS), Resilient Modulus (RM) and Fatigue. The results showed a superior overall performance of the asphalt compositions with the clay aggregates, when compared to formulations with natural aggregate, within the temperature range of 25 to 60°C.
Keywords:
sintered calcined clay aggregate; asphalt mixtures; tensile strength; resilient modulus; fatigue
