Treatment of granular material with asphalt emulsion

Abstract

Studies were carried out on the granular material taking into account the AASTHO standards with the objective of the investigation being to determine if this granular material complies as a class 1A base to be used as a base in the pavement structure, for this the material was stabilized with asphalt emulsion. To increase resistance and give the material base characteristics, with an appropriate mix design, currently the use of granular materials treated with hydraulic binders or asphalt binders is common for the construction of bases in flexible pavements, to achieve high performance due to the increase in the repetitions and magnitudes of the loads of automotive transport. The materials used in the granular base must meet certain requirements. The support capacity will correspond to a CBR equal to or greater than 80%; The portion that passes the No. 40 sieve must have a Plasticity Index less than 6% and a Liquid Limit less than 25%; The aggregates used must have a Wear coefficient of less than 40%; and must be free of plant matter, garbage, clay lumps or substances that incorporated within the granular base layer could cause failures in the pavement.