Mezcla asfáltica tibia modificada con Husil y un desecho de polietileno de baja densidad (PBOD) empleando como granulometría de referencia la mdc – 19

Abstract

This degree work shows the experimental results thrown by a dense hot mix MDC-19 particle size (specification INVIAS 2013) to be modified HUSIL and a waste of low density polyethylene (LDPE). Whereafter resistance under monotonic loading and it would possibly favorable impact to the environment, since the addition of polymers modified in a significant way the properties of asphalt production by reducing the temperature was measured. For the preparation of the mixture and consecutively evaluation of it, it was used asphalt cement AC 60-70 type produced in the city of Barrancabermeja by Empresa Colombiana de Petroleos - ECOPETROL. By assaying type Marshall (INV 748-13.) 20 briquettes with different percentages of asphalt, between 4.5% to 6%, and at temperatures of 150 ° C mixing and compacting at 140 ° C; It was determined that the optimum content for the sample was 5.5%. Having obtained this percentage it was continued with the addition of waste polyethylene (LDPE), percentage of 5% and 7.5%, wet at a controlled and established with mixing times to achieve a homogeneous mixture temperature. Complementing the procedure of mix design it was decided to use the HUSIL additive (supplied by the research group pavement of the district college), which foam asphalt making the viscosity is reduced and increasing its suitable adhesive properties for blending with the stone aggregate. Tests performed conventional mixture (without the additive) and the modified mixture (with additives) by Marshall method; achievement show that the behavior of the properties has advantages and disadvantages: increases stiffness and creep resistance but resistance to fatigue (lifecycles) is diminished. However the characteristics of the MDC-19 modified mixture meet the goal of making it to reduce its production temperature (mixing and compaction) thereby achieving an asphalt mixture tibia that is within the quality parameters established by the National Institute of Roads - INVIAS. Keywords: dense hot mix, HUSIL, waste polyethylene (LDPE), modified asphalt, asphalt tibia. This paper work shows the experimental results obtained by a dense hot mix MDC-19 particle size (specification INVIAS 2013) to be modified HUSIL and a waste of low density polyethylene (LDPE). Where later under monotonic loading resistance and favorable possible impact that the environment, since the addition of a polymer modified considerably reducing the properties of asphalt production temperatures measured. For the preparation of the mixture and consecutively evaluation of it, it was used asphalt cement AC 60-70 type produced in the city of Barrancabermeja by the Colombian oil company -ECOPETROL conducting trials like Marshall (INV 748-13).