On the use of asphalt concrete mixes (according to the PNST)

Abstract

Abstract The article is devoted to the preliminary national standard 184-2016 “Public roads. Asphalt concrete road mixes and asphalt concrete. Technical conditions”. The purpose of the work is to identify incorrect and unsubstantiated data of the preliminary national standard in comparison with the current interstate standard 9128-2009 “Asphalt concrete road, airfield and asphalt concrete mixtures. Technical conditions”. The following are ideas, some comments and suggestions that should be taken into account when developing and approving the preliminary national standard for asphalt concrete. The comparative analysis is aimed at identifying unsubstantiated technical characteristics, physical and mechanical parameters and criteria for testing asphalt concrete. The topics covered include “Grain compositions”, “Road classification”, “Voids”, “Dust”, “Sample preparation for testing”. The feasibility of using the new system was evaluated. The results are presented in the form of a comparative analysis of the requirements of current standards with the requirements of preliminary standards for the general characteristics of asphalt concrete mixtures. Proposals have been developed to adjust the physical and mechanical properties of asphalt concrete in accordance with the performance indicators of St. Petersburg roads.