Application of Intelligent Compaction Monitoring System in Highway Pavement Construction
Compaction quality is an important determinant in highway pavement construction.At present,the traditional construction con-trol mode has limited effect on compaction quality.In order to strengthen the control of compaction quality,a set of intelligent compaction monitoring system based on GPS positioning technology,LoRa/Wi-Fi wireless communication and other technologies is designed and proposed.Through layered design and modular design,the system integrates vehicle operation sensor module,infrared temperature meas-urement sensor module and compaction sensor module to provide real-time feedback on rolling speed,quality and temperature and guide the compaction operation.Through practical engineering application comparison test results show that the application of intelligent com-paction monitoring system for construction guidance,can be the initial pressure speed control between 2.6～2.9 km/h,compared to the traditional compaction construction speed(2.5～4.4 km/h),speed change range is small,relatively stable,and the average speed of 2.8 km/h(<3.3 km/h),can effectively avoid speed too fast,too slow lead to large coefficient of variation.The fluctuation range of roll-ing temperature is controlled between 163 and 166℃,which improves the problem of increasing coefficient of variation caused by large temperature fluctuation and reduces the occurrence of leakage pressure.After testing,the application of the intelligent compaction monito-ring system after the road compaction is higher than the requirements of the design index,which reduces the occurrence of pressure re-plenishment and rework caused due to quality problems,and reduces the non-essential cost.
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