Polyether type polyurethane grouting material and treatment method for asphalt pavement pumping damage

Abstract

The invention discloses a polyether type polyurethane grouting material and a treatment method for asphalt pavement pumping damage, belongs to the field of pavement maintenance and grouting materials,and aims to solve the technical problem of how to perform rapid minimally invasive repair on the pavement pumping damage to ensure rapid recovery of pavement bearing capacity and use functions. According to the technical scheme, the grouting material comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 0.9: 1 to 1: 1; the component A comprises polyisocyanate; the component B is mainly prepared by mixing the following raw materials in parts by weight: 80-120 parts of polyether polyol, 0.1-1.0 part of a catalyst, 10-30 parts of a chain extender, 4-8 parts of a foam stabilizer, 20-50 parts of a plasticizer, 10-25 parts of tackifying resin, 4-10 parts of a silane coupling agent and 1-5 parts of a water removal agent. The method specifically comprises the following steps: S1, disease marking: detecting and marking the pumping disease condition of a pavement; S2, grouting and hole distribution; S3, structural drainage; S4, grouting reinforcement; S5, surface loosening treatment; and S6, sealing water on surface.

Description

technical field [0001] The invention relates to the field of road surface maintenance and grouting materials, in particular to a polyether type polyurethane grouting material and a method for treating grouting diseases of asphalt pavement. Background technique [0002] With the increase of road service life, different degrees of pavement structural diseases often occur. Slurry is one of the most common diseases in semi-rigid base asphalt pavement in my country. If this disease cannot be treated effectively in time, it will aggravate with the increase of pavement service time, and then develop into serious diseases such as potholes and subsidence , leading to the decline of pavement structural bearing capacity and use function, and reducing the service life of pavement. [0003] At present, most of the restoration techniques for pumping diseases are shallow excavation and repair, and there are also a few incidental treatments in the excavation and milling repair process of lo...

AI Technical Summary

Problems solved by technology

[0008] The technical task of the present invention is to provide a polyether polyurethane grouting material and a treatment method for asphalt pavement pumping disease, to solve how to quickly and minimally invasively repair the road surface pumping disease, to ensure the rapid recovery of road surface bearing capacity and use function, while meeting the requirements of road structural disease repair under routine and emergency maintenance conditions

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