Análise de Modelos Mecânicos Viscoelásticos em Concreto Asfáltico com Agregado Sinterizado de Argila Calcinada (ASAC)

Abstract

The Manaus pavement is disadvantaged by high temperatures, intense rainfall, abundant clayey soil on the natural subgrade, and lack of granular material. It was aggravated by the vehicle fleet increase of about 173% in the last ten years. As a consequence, the pavements deteriorate early. An alternative to face these problems is unconventional materials, such as sintered calcined clay aggregate (SCCA). In this work, through the information available in the Geotechnical Research Group (GEOTEC) database, a theoretical-experimental study was conducted in CA asphalt concrete with ASAC. The best available data were obtained through refining, based on the cole-cole plan. Then, the set of selected experimental information was evaluated using the Huet-Sayegh, 2S2P1D, and GHS models. It proposed the introduction of two adjustment coefficients (C1 and C2) and two weights (P1 and P2) in the calculus of the theoretical results to improve the fitting of the studied models. The results show that, in general, all models could make reasonable predictions after adopting the weights and the proposed coefficients. It is concluded that the proposed work overcame the initial difficulties of fitting the experimental data using the Huet-Sayegh, 2S2P1D, and GHS models. The proposed methodology can be applied to non-traditional materials, such as asphalt concrete with ASAC. The GHS-C1C2 was the best model for predicting laboratory data results.