Influência da temperatura e da velocidade de trafego na previsão de área trincada de pavimentos asfálticos

Abstract

Brazil is going through an important moment in the pavement industry due to an ongo-ing development of a mechanis5c-empirical pavement design method. In this paper, the importance of two variables in the predic5on of cracked area over 5me, temperature and traffic speed, is inves5gated using the CAP3D-D soHware. A mechanis5c analysis along with empirical transfer func5ons is used to analyze 4 Hot Mix Asphalt considering 16 different scenarios with the same pavement structure. The results confirm the signif-icant sensi5vity of the predicted cracked area to the variables inves5gated, with varia-5ons from 6 to 40% through a 120-month simula5on between temperatures in the Northeast and South regions of Brazil, respec5vely, and varia5ons of up to 33% for com-parisons between 10 km/h and 90 km/h, respec5vely. It is shown that in addi5on to producing different cracking results, the mixtures showed different levels of sensi5vity to temperature and vehicle speed varia5ons, making it clear the importance of consid-ering these parameters in pavement desig