Evaluación superficial y de la estructura del pavimento de la vía Quero – Mocha abscisa 0+000 - 4+300, ubicada entre los cantones Quero y Mocha de la provincia de Tungurahua

Abstract

The Quero-Mocha Road is a vital link between two cantons with prominent agricultural, dairy, and textile production. In order to preserve essential connectivity for the local economy and minimize negative impacts, the implementation of a robust maintenance plan is proposed. An evaluation was conducted, considering key factors such as traffic volume, Pavement Condition Index (PCI), California Bearing Ratio (CBR), and a reference budget. The analysis of the Annual Average Daily Traffic (TPDA) classified the road as a two-lane Class II. The Pavement Condition Index (PCI) was crucial in determining maintenance needs, including rehabilitation, reconstruction, periodic, and routine maintenance. Similarly, deflection studies using the Benkelman Beam method revealed Type I and Type III deflections. The California Bearing Ratio (CBR), assessed in the field and laboratory, demonstrated values between 13 and 28 percent, categorizing it as very good and excellent for the subgrade. Additionally, the base was characterized as Class 4, with CBR exceeding 80 percent, deeming it excellent for the base. Further analyses, such as particle size distribution and Atterberg limits, supported the soil's suitability as a subgrade. An abrasion test indicated wear of 35.5 percent, below the acceptable limit of 40 percent, confirming the good condition of the base. As a result of these findings, a structural design projected for approximately 20 years was developed, supported by a reference budget of $341,639.34 for the Maintenance Plan.