Application of the AASHTO 93 method in road design to optimize the operational condition of the Casagrande-Roma-Chiclin section

Abstract

This research was presented in response to the need to improve the operational condition of a 12-km stretch of road located on the Casagrande-Roma-Chiclín highway. This was due to a high degree of deterioration in the surface and structural layers of the pavement comprising the section. Therefore, various studies were conducted, highlighting the different requirements and procedures that must be followed to correctly implement the AASHTO 93 method. The overall objective was to design a flexible pavement using the AASHTO 93 method to improve the operational condition of the Casagrande-Roma-Chiclín section in the province of Ascope, La Libertad, thus contributing to road safety, transportation efficiency, and the economic development of the region. A quantitative methodology was employed, requiring data collection from traffic studies, soil studies, precipitation studies, and the development of the pavement design for the roadway. The structural design proposed a structure composed of a 10 cm surface layer, a 25 cm granular base, and a 30 cm subbase. This design proposal was presented with the goal of improving the roadway's operational condition by using the AASHTO 93 method for design.