Application Of Micro-surfacing Technology In The Road Maintenance In City

The increase of traffic in recent years and the growth of working age, after a number of city road into the repair maintenance period,in does not affect or further how to reduce disease less influence public travel case, slow the rate of deterioration of pavement performance,prolongs the service life of the pavement,the pavement in good service state,improve the comfort and the safety of driving,the urgent need to take maintenance measures timely, effective.To accelerate the speed of road maintenance, improve maintenance quality, reduce maintenance costs,is the focus of preventive maintenance work.Micro-surfacing is through the regular condition investigation,timely detection of pavement slightly damaged and disease signs,analysis of its causes,symptomatic take preventive maintenance measure.Micro-surfacing technology has the advantages of convenient construction, fast traffic opening,energy saving and environmental protection,low cost and long service life,is a kind of economical and environmental preventive maintenance measures.At home and abroad, the micro table maintenance engineering technology has been widely used in highway, but the application in the city highway maintenance engineering is still in its beginning stage.This paper introduces the micro-surfacing material selection,mix ratio,construction technology and mixture design inspection consistency, mixing time,cohesion and initial setting time test method;introduces the construction process,control method of mixture consistency, asphalt aggregate ratio,breaking time,joints and paving thickness;analyzes some common quality problem and gives the processing method.Through the application of micro-surfacing technology in Shandong Weifang City Road, further verify the advantages of micro-surfacing technology, effectively solves the problem of pavement seepage, pavement aging, the technical conditions of the decline, to improve pavement performance,has the extremely vital significance to extend its service life,saving investment etc..Based on the practical engineering innovations are described.