Mejoramiento del trazado geométrico y diseño estructural de pavimento de la vía San Pablo – unión y trabajo, ubicada en la parroquia Mulalillo, cantón Salcedo, provincia de Cotopaxi

Abstract

For the development of the project, a topographic survey was carried out, where it could be observed that the topography of the place was mountainous, 2519 topographic points and a topographic strip of 20 meters were obtained, later the vehicle count was carried out manually and calculated the projected ADT for 20 years, determining that the road is class III collector according to the 2003 Geometric Design Standards for Roads. The soil study was carried out to know their physical and mechanical characteristics, resulting in a silty sand and a design CBR of 14.1 percent, thus being an optimal soil for subgrade; With these data, the flexible pavement structure was designed using the AASHTO 1993 standard, resulting in the following thicknesses: 5 cm of asphalt layer, 15 cm of base and 20 cm of subbase. Also, the geometric design of the road was carried out based on the 2003 Road Geometric Design Standards, complying with the necessary requirements for an adequate horizontal and vertical alignment that will provide comfort to the road user, the cross sections of the road were also obtained and the calculation of volumes of materials. Finally, the design of ditches was carried out that will help keep the road in good condition, the study of horizontal and vertical signaling, and the analysis of unit prices based on the activities that the road construction process will entail.