Rubber Asphalt Macadam Seal Test Research And Engineering Application

Rubber asphalt macadam seal technology because of its own existence large noise,in the big traffic and high-speed roads easy cause its gravel threshing,etc,has not been applied to highway surface used as asphalt sealing layer.But the technology is used for highway asphalt pavement surface layer,can rapidly improve the quality of using asphalt roadbed and paving treatment more economic,such as milling planer is a kind of convenient,efficient and economic method of maintenance.Therefore,in this paper,the principle of rubber asphalt macadam seal coat as the breakthrough point,study combined with the climate characteristics of the cold north rubber asphalt macadam seal technology.Through the study of the performance test of raw materials,and reference for domestic and foreign rubber asphalt macadam seal in the application of curing,scientific design for liaoning province in the face of the cover that highway engineering rubber asphalt macadam seal stone and asphalt cement technical indicators,to determine the three major indicators of rubber asphalt,asphalt viscosity,crushed stones gradation,value,the needle flake content,adhesive,etc.,evaluation of rubber asphalt macadam road use performance of seal materials.Construction temperature of rubber asphalt macadam seal technology,construction technology,the effect of preventive maintenance,low-temperature bonding performance test,the wet abrasion wheel load test,small acceleration test,bonding layer shear test of rubber asphalt macadam seal performance,and to improve the performance of raw materials and construction technology and improvement of promotion for the application of the rubber asphalt macadam seal coat provides theory basis.With asphalt pavement maintenance of SBS modified asphalt macadam seal coat is commonly used in comparison,more outstanding reflect the rubber asphalt with high temperature stability,low temperature crack resistance,fatigue resistance,resistance to water damage ability,etc.At the same time,through the wet abrasion test to determine the rubber asphalt macadam seal coat of asphalt and minimum;Through small accelerated loading test to determine the maximum asphalt spraying;Finally by the bonding layer shear test to determine the best asphalt rubber asphalt macadam seal coat and cloth.Based on test results,verify its gravel coated,and temperature on the adhesive,the influence of choosing mechanical combination,determine the reasonable construction technology and implementing scheme,for physical engineering verification.Through concentrated study to rubber asphalt macadam seal technology is applied to in the face of the cover that highway engineering in our country,as a preventive maintenance technology.Use of rubber asphalt economic environmental protection,high elasticity,high cohesive force and the advantages of the excellent anti-aging performance,to increase a highway asphalt pavement preventive maintenance method,to liaoning highway preventive maintenance technology to supplement.