DEPENDENCE OF ASPHALT CONCRETE VOLUMETRIC PROPERTIES ON THE LARGEST NOMINAL AGGREGATE GRAIN SIZE AND COMPACTION METHOD

Abstract

Introduction. One of the aspects of Ukraine's European integration is the introduction of European approaches to the design of asphalt mixtures. In Ukraine, as in other European countries, when designing the asphalt mixtures, asphalt concrete samples are made by compaction in the laboratory; however, different compaction methods are used for this purpose. Statement of the problem. In Ukraine, the method of compaction of asphalt mixtures in the laboratory at a pressure of (30.0 ± 0.3) MPa is used if the crushed stone content in the mixture is higher than or equal to 35%, or at a pressure of (40.0 ± 0.4) MPa if the crushed stone content in the mixture is up to 35%. In the countries of the European Union, the Marshall impact compaction method of 100 strokes (50 strokes on each side) is mainly used for this purpose. Therefore, it is advisable to determine the effect of the method of compaction of asphalt mixtures on the volumetric properties of asphalt concrete, depending on the largest nominal grain size of the aggregate and the compaction method.

Keywords

• road
• material