The effect of shale mineral powder on the strength of asphalt concrete

Shuxrat Buriyev,Shoxrux Davranov,Yokub Kuchkarov,Iroda Saydakberova,D Bazarov

doi:10.1051/e3sconf/202126402052

Abstract

In the article, work has been done to obtain shale mineral powder based on local raw materials and develop technologies to improve the physical and mechanical performance and durability of asphalt concrete, thereby increasing the physico-mechanical performance and durability of asphalt concrete, the density of fine-grained hot dense asphalt mix with shale mineral powder. The water absorption index of the asphalt concrete mixture decreases, the strength increases, and the transport performance of the road improves.

Highlights

According to the current policy of Uzbekistan, the highway plays an important role in attracting investment and the development of imports, tourism and tourism
Due to the fact that the addition of mineral powder does not increase the activity of the binder, the compressive strength and density of asphalt concrete pavement are lower than the norm, water absorption is higher than the norm, resulting in defects in the coating, which leads to a sharp reduction in service life [5, 6]
Mineral powder added to the preparation of fine-grained hot dense asphalt concrete mix is obtained by crushing dolomite, shale rocks, dolomites GOST 16557-2005 "Mineral powder for asphalt-concrete and organomineral mixtures" T.U

Summary

Introduction

According to the current policy of Uzbekistan, the highway plays an important role in attracting investment and the development of imports, tourism and tourism. Due to the fact that the addition of mineral powder does not increase the activity of the binder, the compressive strength and density of asphalt concrete pavement are lower than the norm, water absorption is higher than the norm, resulting in defects in the coating, which leads to a sharp reduction in service life [5, 6]. In such cases, the powder obtained by crushing cement and ordinary stones is added to the composition of fine-grained hot dense asphalt concrete produced in the Republic. As a result of the low production of mineral powders that meet the requirements of Table 1 of the normative document, in some cases not added at all, the service life of the asphalt concrete mixture laid on the pavement is reduced [10,11,12,13,14,15,16,17]

Results and Discussion

Natural moisture

Average density

Conclusion