Self-healing intensity, rate and durability of asphalt concrete

Abstract

When developing self-healing materials, methods to test self-healing are needed. Three parameters for assessing the self-healing of asphalt concrete are proposed in this article. The self-healing coefficient is proposed to assess the intensity of self-healing. It is proposed to use the dependence of changes in relative strength over time to estimate the rate of self-healing. The time to reaching the critical value of the strength, is proposed to assess the durability of asphalt concrete after healing. The generalized quality criterion is proposed to assess the effectiveness of self-healing. The efficiency of self-healing using encapsulated ARP is 1.87 times greater than when using encapsulated SfO. The self-healing rate for SMA with encapsulated SfO is 71% greater than ordinary asphalt concrete, and for SMA with encapsulated ARP it is 75% greater. The failure rate for SMA with encapsulated SfO is 5% greater than ordinary asphalt concrete, and for SMA with encapsulated ARP it is 70% greater. The use of encapsulated SfO makes it possible to get SMA with a self-healing ability that is 36 % greater than ordinary SMA. The use of encapsulated ARP makes it possible to get SMA with a self-healing ability that is 79 % greater than ordinary SMA. The self-healing ability of asphalt concrete with encapsulated SfO is 36% greater than ordinary asphalt concrete. The self-healing ability of asphalt concrete with encapsulated ARP is 79% greater than ordinary asphalt concrete. Requirements for new methods for testing the self-healing ability of asphalt concrete are formulated.