Study On Mineral Component Of Aggregate For Asphalt Mixture Performance

Aggregate in asphalt mixture proportion to achieve90%above, the construction ofhighway on rock resource utilization is becoming more and more serious, the rock is undercertain physical and chemical conditions after thousands of years,belonging to non-renewableresources. This article through to the rock mineral composition analysis and composition ofrock mineral composition of the surface physical chemistry to reveal the mineral compositionon aggregate performance influence,with environmental resources become increasingly tense,it is important to use some mineral resources effectively, improve resource utilization rate.This project is in the collection of domestic road asphalt pavement with typical rockaggregates.In indoor test, carried out by X ray analyzer, spectrum analyzer, electronic probe,and other advanced equipment to analysis mineral, chemical composition. With the aid ofsurface physical chemistry theory to test the mineral composition of the surface physical andchemical properties are tested, thereby determining adhesion between the single mineral andasphalt;using self-made asphalt aggregate bond force experiment to test the cohesive forcebetween asphalt and aggregate, so as to judge the aggregate mineral content on asphaltaggregate adhesion effect. Indoor test, the typical rock aggregate mixture road performancetest, for example mixture high temperature performance, the water stability andlow-temperature anti-cracking performance.This article through the study of the influence of the rock aggregates in mineralcomposition on performance of asphalt mixture,priving the basis in selection aggregate,so asto utilize the natural resources effectively,improve resource utilization rate.