Análisis del comportamiento del hormigón asfáltico mezclado con fibra de vidrio, utilizando el ensayo Marshall

Abstract

The widespread use of traditional asphalt concrete over time has revealed deterioration in roads due to vehicular traffic, weather conditions, and a lack of maintenance. Recognizing this, efforts have been made to improve with innovative techniques and new materials to achieve greater strength, durability, cost reduction, and shorter maintenance times on roads. In this study, a sample was obtained from the Salvador quarry, and a series of tests were conducted on the aggregates to determine their suitability for the development of asphalt briquettes. These tests included particle size distribution, specific gravity of fine aggregates, specific gravity of coarse aggregates, and abrasion or wear of coarse aggregates. Fiberglass was incorporated into the asphalt mixture using the Marshall methodology, and the optimum asphalt content was determined by preparing three briquettes for each of the percentages: 5.00, 5.50, 6.00, 6.50, and 7.00 percent, resulting in an optimal content of 6.45 percent. Similarly, to establish the optimum percentage of fiberglass, the results obtained for percentages of 5.00, 7.50, 10.00, 15.00, and 25.00 percent were compared, with 5.00 percent yielding the best characteristics and properties. Upon completing all phases of the research, it is concluded that fiberglass asphalt concrete exhibits 11.05 percent less stability than traditional asphalt concrete. However, all its other properties meet Marshall criteria, except for asphalt-filled voids, which exceed them by 5.50 percent.