FEATURES OF THE STRESS STRAIN OF CERAMSITE POWDER MODIFIED SMA PAVEMENTS

Abstract

Statement of the problem. The task of improving the performance characteristics of crushed stone-mastic asphalt concrete by modifying them with porous powder materials, using the example of expanded clay powder, is considered. Results. As a result of experimental studies features of the deformative behavior of the proposed compositions were identified at different operating temperatures. The graphs of dependences of the impact of expanded clay powder on the viscosity and relaxation time of the stresses of crushed stone-mastic asphalt concrete were obtained. Conclusions. It was established experimentally that crushed stone-mastic asphalt concrete modified with expanded clay powder has a higher heat resistance, shear resistance and crack resistance than traditional compositions with stabilizing additives. Increasing these properties leads to an increase in the service life of road surfaces