Research On Warm-mix Warm-filling Type Of Rapid Repairing Pavement Materials Used

With the development of China's highway network, the road repairing after damage is also becoming more important, usually asphalt concrete pavement pit slot repairing material is to use hot-mix asphalt mixture, but the influence of workload and climate, often can't achieve rapid repair timely, especially in spring and winter will lead to more serious as subgrade frost boiling etc pavement disease, in recent years ,someone begin using cold-filling asphalt material for asphalt pavement disease fast repair, but the early strength is low for the cold-filling material, low intensity growth slowed,short time can be stored, and so poor construction workability etc only adapted to the pavement rapid repairing of temporary and emergency, it's hard to meet rapid repair for highway, especially highway fast repair requirements.According to the requirement of rapid repair highway pavement, it develops compound additives used in the type of warm-mix warm-filling road repairing material, determine the compound additives'composition and mix proportion; Put additives, solvents and matrix asphalt etc mix to be modified asphalt fluid by certain proportion, liquid on the three indexes test, adhesion test, asphalt liquid and mineral aggregate experiment and the adhesion of the rotating film etc, according to test oven asphalt fluid adhesion and hot-mixing materials of loose after cooling sexual test results confirmed the mixed quantity of thinner; According to determine the aggregate gradation, best asphalt content and best diluent preparation of the admixture of asphalt mixture and cooling to normal temperature, take a certain amount above mixture, in under the condition of 50 ~ 70℃, add some of additive is prepared to the type of warm-mix warm-fill fast repairing material; make the type of warm-mixing warm-filling fast repairing material's adhesion, initial and the mid-late strength, high temperature and stability, water stability, low temperature performance etc way-use with technical performance proceed testing, and compare with the repairing material for cold-filling type tested about technical performance.Based on experimental study the type of warm-mixing warm-filling pavement rapid repairing materials, shows that this repairing materials compare to cold-filling material, its construction workability is good, production technology is simple, storage time is longer, the initial strength, after molding water stability, strength growing faster, better for the highway is a fast repair, is good application prospect material.