Study on Noise Reduction Performance and Temperature Field Calculation of Rubber Granular Asphalt Pavement
As the concept of environmentally friendly design goes deeper,the ecological,green,and low-noise new pavements have become the future of the road industry.Due to advantages such as good durability,low noise level,and excellent compactness,rubber granules have gradually become a focus of studies of new pavements.Starting from the noise reduction mechanism,this paper clarified the optimal dosage of rubber granules was 1.5％in the low-noise pavement,and investigated the effects of void ratio,structural depth,and wheel vertical vibration on the noise reduction from the two aspects of vibration and noise reduction,sound absorption and noise reduction.The results showed that the road performance of asphalt pavement with rubber granules could completely meet the requirements of design specifications,and the noise-reducing effect was good.Through the numerical simulation calculation,it was found that the rubber granules had a thermal insulation function,so that the temperature-sensitive structures such as the base and subbase of the pavement were less affected by temperature changes,ensuring the stability of the structural properties.
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