Four-point bending mechanical behavior of aged asphalt mixtures containing charcoal

Abstract

The asphalt coating is the layer responsible for resisting the traffic stresses of a highway. However, the search for new materials to mitigate environmental impacts and improve pavement quality is increasing. Thus, the mechanical behavior of asphalt mixtures was analyzed through the four-point bending test after the molding process and aged, with the participation of residues in the form of charcoal. The frequencies of 1Hz, 3Hz, 5Hz, 10Hz, 20Hz and 1Hz are considered at temperatures of 25°C and 40°C. The aging process contributed to improve the mechanical characteristics of the charcoal mixture at a temperature of 25 ° C, considering that there was an increase in stiffness at frequencies from 1 to 20 Hz, as well as a reduction in phase angle at frequencies of 3 Hz. , 5 Hz, 10 Hz and 20 Hz.

Avaliação laboratorial de misturas asfálticas à quentes produzidas com grafite cominuído

“…Porém, os pavimentos rodoviários ao longo de sua história, percebe-se a ocorrência prematura da perda das características funcionais e estruturais dos pavimentos asfálticos levou ao desenvolvimento e adoção de materiais inovadores para aumentar a vida útil das camadas asfálticas (Moreno-Navarro, Iglesias e Rubio-Gámez, 2016). À vista disso, com o objetivo de reduzir custos e manutenção e, ainda, mitigar a exploração dos materiais convencionais, recursos naturais não renováveis, normalmente usados nessas estruturas, a literatura cita diversos estudos relacionados a utilização de diferentes materiais, provenientes de processos industriais (Specht, 2012;Bardini, et al, 2012;Yan, Xu e You, 2015;Arao, 2016;Torres, et al, 2019;Pereira, et al, 2019;Carlesso, et al, 2019).…”