Study On Quality Control Of Construction Craft Of Expressway Asphalt Pavement

Because the rapid development of our country highway constructed and the large increase vehicle carried quantity unceasingly in recent years , the highway asphalt pavement appeared the many early destruction, therefore, the enhancement bituminous pavement construction process craft quality control was imminent. About the bituminous pavement construction quality control, domestic and foreign has done the massive research, but forms the system integrity by no means the quality control system. This article quality question which appears in view of our country highway bituminous pavement construction in, take Lianyungang to Huoerguosi 312 federal highway branch line Xinjiang Kuitun to the match in the Sailimu lake section (the Kui Sai) the road as the backing, From bituminous pavement raw material (including asphalt, aggregate, padding) selects, the bituminous mixture mixes the transportation, bituminous mixture spreading paving and roller compaction several aspects, proposes in the bituminous pavement construction process various technical process quality control main point.The findings indicated :Raw materials and the blend performance have the very tremendous influence to the bituminous pavement surface layer quality. In carries on the experimental control to raw material in the foundation, in mixture ratio design permission scope, specific request the trimming blend mixture ratio according to the project, may both the guarantee project construction quality, and reduces the project expense. Mixes when the equipment concrete shaping should act according to the resilience and the time limit for a project request optimum composition, front simultaneously is big the area to mix up should carry on the comprehensive debugging which the asphalt mixes stands ,the designation mixes up the parameter to guarantee mixes up the quality. The control mixes up in the process the cold bunker current capacity, the shaker size and the inclination angle, the hot bunker is expected the uniformity as well as mixes up the temperature and the time, may reduce the unqualified material effectively the production, to mixed up in the process the abnormal phenomenon to propose the corresponding solution measure. Strengthens the carrier vehicle in the blend transportation process the reasonable match, the control transporting velocity and the transportation distance, may reduce the blend effectively the segregation and because temperature drop produces aging. Carries on the base directrix precisely the establishment, the strict control spreads paving the speed, spreads paving thickness, the paver starts a business the direction, under the control receives the level smoothness, according to the roller compaction procedure compaction, and uses the continuous type pavement smoothness meter track examination, may enhance the road surface effectively smooth and the durability. The extra wide road surface construction uses two paver echelons to spell when spreads paving, guaranteed the initial compactness same is a principle, chooses each paver the structure and the movement parameter, increases the elevation control point position and carries on the track survey, guarantees the pavement smoothness and the transversal grade slope. The research results are good in the Kui match highway construction application effect, each target achieves finely.