Study On Noise Reduction And Sliding Resistance Performance Of Skeleton Dense Asphalt Rubber Tunnel Pavement

Involved in road traffic has become an essential part of human activity. Trafficnoise has become one of the major social problems. Meanwhile, the increase in trafficbrings traffic and driving speed faster bring safety issues can not be ignored. Therefore,the development of a good pavement performance, while anti-slide, both road noiseperformance, the study carried out urgently.This reaserch relies on the pavement Gansu Provincial CommunicationsDepartment tunnel project, drawing on relevant research results at domestic and abroad,and ultimately propose a skeleton dense anti-sliding Quiet pavement, referred SAQP.The coarse crumb rubber particles into the gap-graded asphalt mixture, using a rubberasphalt binder to form a dense skeleton structure similar to SMA pavement, using alarge rubber powder particles and the combined effect of rubber asphalt pavementdamping increases, so as to achieve the effect of vibration and noise reduction; alsohas good road performance and better surface properties; further selection of rubberasphalt as a binder, incorporated in the mixture mixing method for preparing rubberparticles aggregate part replaced that mixture preparation method called combination ofwet and dry. This article was originally thought to the above guidance, with ordinaryAC-13C and SMA-13mixture of road and with the performance and functionality of thecomparison and analysis, a relatively new road vibration damping energy evaluationtest.The following conclusions and results: To determine the SAQP-13gradedcomposition, according to Marshall Marshall compaction method to determine thephysical and mechanical properties of different dosage under the rubber particles,taking into account the different amount of mixed material is determined by the volumeof high-temperature performance design (1%,2%and3%) lower than the optimumasphalt rubber particles SAQP-13were6.0%,6.1%,6.3%. SAQP-13high-temperaturestability is better than mixing the two types of contrast material, in which content is3%SAQP-13high-temperature stability is best, followed by2%and1%, the dynamicstability with rubber granules low dosage, respectively7351,6209,6028times/mm.SAQP-13mixes with low dosage maximum bending tensile strain were4009με,3367με,3023με greater than AC-13C (2822με), better low temperature cracking performance,but content is SAQP-13low at1%strain below the SMA-13-type mixture. Flooding splitting residual stability to meet the technical requirements, SAQP-13immersionresidual stability AC-13C and SMA-13is smaller than.Functional aspects: SAQP’s depth and SMA’s at the same level, both larger thanthe AC mixture. Incorporation of rubber particles SAQP, placed under adverseconditions attenuation values less than SMA and AC, to prove their anti-slideattenuation performance is better than AC and SMA mixes. SAQP mix differentvibration frequencies in the dynamic modulus of less than SMA and AC mixes,damping significantly larger than the other two types of mixes. Vibration dampingpower to evaluate the energy dissipation mix, showing significantly better than AC andSMA characteristics.