Asphalt-mastic-broken stone mixture using steel slag as coarse aggregate and its application

Abstract

An asphalt-mastic-broken stone mixture used for pavement of highway and street is prepared from steel slags, machined sand, powdered ore, lignofibres as stabilizer and asphalt as cementing agent through proportional mixing. Its advantages are high mechanical performance long service life and reducing environmental pollution.

Description

technical field [0001] The invention relates to an asphalt mastic macadam mixture, in particular to an asphalt mastic macadam mixture using steel slag as a coarse aggregate, and belongs to the technical field of asphalt mixture applied to highway pavement and steel slag recycling. The present invention also relates to the application of the asphalt mastic macadam mixture. Background technique [0002] Asphalt mixture (AC) is widely used in the surface layer of highway pavement in our country. In recent years, asphalt mastic macadam mixture (SMA) has been used in the surface layer of high-grade highways. Asphalt mastic macadam mixture is a kind of mixture formed by intercalating discontinuously graded coarse aggregates into a skeleton, and asphalt mastic formed by asphalt, fiber stabilizer, mineral powder and a small amount of fine aggregates to fill the skeleton gap The material belongs to a dense-skeleton structure. Due to its excellent anti-rutting, anti-skid performanc...

AI Technical Summary

Problems solved by technology

[0010] 3. From the perspective of environment, a large amount of steel slag accumulates and occupies a large area of ​​land. At the same time, steel slag dust pollution has become one of the main factors affecting the environment.