Review of the method for determining the fluidity of the mastic mixture based on the established immersion depth of the test rod

Introduction. Mastic asphalt concrete is one of the oldest road construction materials used for road pavements. Problem Statement. Mastic asphalt concrete is a type of hot asphalt concrete, a feature of which is an increased amount of mineral powder and bitumen binder, due to which mastic mixtures can be placed in the road surface without compaction. Therefore, one of the main technological indicators of the quality of mastic asphalt mixtures is their fluidity. This indicator is one of the most important for designing the composition of the mastic asphalt mix, establishing the optimal amount of bitumen binder and setting the technological temperatures for preparing the mix at the plant and placing it in the road surface. Despite this, this indicator is not currently defined or standardized in the domestic road industry. The purpose. The aim of the study was to review the method for determining the plasticity of mastic asphalt mixtures based on the immersion depth of the test rod, as well as to establish the possibility and feasibility of its use for assessing the quality of mastic mixtures.