Study On The Performance Of Fog-seal Technology For Alphalt Pavement

With the rapid development of transportation industry in our country,in all kinds of natural factors and the heavy traffic asphalt pavement under the action of the load,the asphalt aging,loose,microfracture early diseases,etc.Fog seal technology as a kind of asphalt pavement preventive maintenance measures,its main function is to restore the aging asphalt,bonding tiny cracks,loose aggregate,closed to prevent pavement water penetration,and improve the look of the route table.In this paper,first of all types and the causes of early diseases of asphalt pavement has carried on the simple introduction,and then,combined with the study of preventive maintenance technology at home and abroad,expounds the definition of fog seal technology,characteristics and function of the fog sealing layer relative to other preventive maintenance measures of the advantages and disadvantages are compared,at the same time,according to the characteristic of early diseases of asphalt pavement in our country its applicable conditions are put forward.From the fog seal material characteristics,to involve the reduction mechanism of asphalt aging are introduced,and then from the Angle of fluid mechanics,this paper expounds the its flows into the micro crack,infiltration mechanism of pavement structure layer,and then expounds the fog seal material strength of the main formation mechanism.As the fog seal technology in closed road microfracture,prevent water penetration,provide theoretical basis for reducing aging asphalt etc aspects,at the same time puts forward the corresponding to the requirements of the material performance.Through the indoor test of protective agent material itself first to study the anti aging properties and permeability,reducing,then daub is on the plate,its permeability and the study of asphalt mixture of waterproof,anti-sliding function,perfect the evaluation system of curing compound materials.Through the test section of the road construction technology and research,finally,by using the method of life cycle economic advantages of analysis.The study found that the fog seal technology is the key to give play to the role of the three factors,namely,material,process,equipment.Its material properties,especially its permeability,and aggregate and asphalt adhesion sex,are the important factors that affect its function,in the process of its construction,the determination of spraying dosage through field experiment to determine.Fog seal technology can effectively restore aging asphalt,closed tiny cracks,strengthen pavement waterproof performance,effectively prolong pavement overhaul period,reduce road maintenance cost,save maintenance funds,is a worthy of popularization and application of asphalt pavement maintenance technology.