Comprehensive control method of asphalt concrete compaction by road roller

Abstract

The research results of the study of the system of continuous control of asphalt concrete compaction are presented. The comprehensive method for controlling asphalt concrete compaction based on the continuous measurement of key process parameters of the rolling process of the mixture: thermal condition, thickness of the laid layer, amplitude-frequency characteristics of the vibration roller system and asphalt concrete bed. The authors present the conditions for performing continuous control of asphalt concrete and the results of experimental studies of asphalt concrete rolling. The regularities of changes in the ultimate strength of mixtures are presented. The graphs of the speed and spectra of vibration acceleration of the drum of the vibratory roller have been obtained, graphs of the dependence of the integral indicators relative to the coefficients of compaction of asphalt concrete have been constructed. The acquired knowledge allows improving the methods for controlling the asphalt concrete mix. Based on the performed studies, the authors propose to use the method of continuous controlling the state of asphalt concrete pavement, as the difference between the specified parameters taken from the sensors, which provides the required compaction coefficient.

The method for calculating phase angle between exciter force of vibration exciter and roller displacement

“…Известно, что акселерометр входит в базовый комплект оборудования большинства систем непрерывного контроля уплотнения [14,15]. Целью данной статьи является разработка косвенного метода расчета фазового угла φ на основе показаний акселерометра.…”