Preparation method of asphalt pavement crevice embedding sealing material

Abstract

Asphalt pavement crack inbuilt-enveloping material and a preparation process are disclosed, wherein the material is prepared by 5%-60% asphaltum, 10%-25% rubber powder, 15%-25% bulking agent, 2%-14% accelerating agent and 1%-3% compatibilizer. The preparation process comprises adding asphaltum in an autoclave, heating up to the temperature of 140-160 DEG C, then adding rubber powder, compatibilizer and accelerating agent, stirring for 20 minutes with 300-1500 rotation / min, elevating the temperature to 170-220 DEG C, shearing 30-45 minutes with a high speed shearer, then adding bulking agent, developing 45-90 minutes in a storage tank, then finally preparing the product of the invention. The product of the invention is used on the crack inbuilt-enveloping, and has large adhesive force withcracks, can effectively prevent from generating new cracks, has favorable flow, is easy to be injected in cracks, has excellent affinity with cracks, and can be fully affused, and has large adhesive surface. The asphalt pavement crack inbuilt-enveloping material is suitable to be used to remand asphalt pavement cracks.

Description

Preparation method of asphalt pavement crack embedding material technical field The invention belongs to the technical field of coagulating pavement for paving roads or airports on site, and in particular relates to the trimming of the pavement upper layer or surface layer; mixing, watering or spreading of pavement materials. Background technique Cracks are one of the main diseases of asphalt pavement. Due to the influence of traffic load, environmental factors and pavement structure, cracks occur and develop gradually over time. Although the crack itself has little effect on the performance of the asphalt pavement, the crack destroys the integrity and continuity of the pavement structure, and leads to a weakening of the structural strength to a certain extent. , Under the repeated action of a large number of traffic loads, erosion and mud pumping will occur, which will reduce the bearing capacity of the pavement structure and lead to structural damage of the pavement. Th...

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Problems solved by technology

The invention patent with the patent publication number CN1597827A proposes a production method of road crack sealant. The main components are asphalt, SBS, tackifying resin, synthetic rubber, etc. The composition of the sealant is complex and difficult to grasp in the production process. higher cost of raw materials

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