Publicación:

Seminario de profundización reciclaje pavimentos flexible: Estudio de mezclas asfálticas recicladas modificadas con diferentes porcentajes de WEO (WA)

Resumen

The use of materials from the recycling of the asphalt pavement (RAP) folder has become an alternative for the production of hot asphalt mixtures (MDC), in which a percentage of the RAP is used in the dosage. The mixtures made with this system must comply with the technical specifications given by the Invías for hot mixes with virgin materials only. In this case it is necessary to use a material that acts as a rejuvenator of the properties of the RAP materials. In the present work the alternative of the use of burnt motor car oil (WEO-Waste Engine Oil) as a rejuvenator of asphalt concrete was analyzed, especially of the binder property of asphalt. This methodology brings both economic and environmental benefits to the exercise of Engineering. The main objective was to determine the optimum amount of WEO that allows to obtain an asphalt mixture with similar characteristics for the corresponding MDC-19 mixtures of the INVIAS regulations. According to the results of the stability and flow for each treatment, the modules of each mixture were determined with the different treatments, which were modeled in three different types of structures from which only one was chosen, which is then severe for being which has less wear in modeling. Three different asphalt mixes were made with recycled materials (WEO and RAP), virgin materials with different amounts of WEO used in the modification of asphalt cement (0%, 3%, 3.5%) and a new virgin asphalt 40 - 50. 18 Marshall-type briquettes with a diameter of 101.1 mm were manufactured, with 6 briquettes for each type of treatment, compacted with 75 strokes per face, on which were determined: the percentage of voids with air, stability, flow, stability-flow relationship, the susceptibility to water using the indirect tensile and Marshall tests.