Environment-friendly type pavement heating sealant material as well as preparation method and application thereof

Abstract

The invention relates to a pavement crack repairing material, in particular to an environment-friendly type pavement heating sealant material which is characterized by being prepared from the following raw materials in parts by weight: 50-70 parts of petroleum asphalt, 7-10 parts of an SBS modifier, 5-8 parts of an SBR modifier, 10-30 parts of waste tire rubber powder, 3-8 parts of natural rock asphalt, 5-20 parts of a phase solvent, 1-4 parts of polyester fiber, 2-5 parts of lignin fiber, 0.1-0.5 part of a cross-linking agent and 10-30 parts of a filling material. The environment-friendly type pavement heating sealant material is adopted for sealing and repairing cracks and joints of common roads, expressways and airfield runways, permeation and fusion of a sealant with an asphalt pavement at high temperature can be achieved, and the environment-friendly type pavement heating sealant material is sufficient in elasticity and free of over-flowing or tire adhesion; after being cooled, the environment-friendly type pavement heating sealant material is good in binding power, and can have elastic deformation along with expansion and shrinkage of cracks due to the relatively good elasticity.

Description

Technical field [0001] The invention relates to a material for repairing road cracks, in particular to an environment-friendly road heating type sealant material and its preparation method and application. Background technique [0002] At present, my country's highway construction has undergone years of development, especially expressways continue to expand the scale of construction. However, the problem that has plagued asphalt pavement cracking at home and abroad has not yet been well resolved. The existence of gaps will cause local damage such as frost heave inside the road, corrosion and spalling of mineral materials, which will eventually seriously affect the stability and safety of driving, and will greatly reduce the service life of the road. At present, the sealant used in China has a wide range of sources, uneven quality, and unsatisfactory results. Due to the limitations of the low-temperature cold brittleness and high-temperature softening of the filling material, the...

AI Technical Summary

Problems solved by technology

However, the problem of cracking of asphalt pavement at home and abroad has not been well resolved so far.

The existence of gaps will cause local damage such as frost heaving inside the road, corrosion and peeling of mineral materials, which will eventually seriously affect the stability and safety of driving, and will greatly reduce the service life of the road surface

At present, the sealant used in China has a wide range of sources, the quality is uneven, and the use effect is not ideal. Due to the limitations of the low-temperature cold brittleness and high-temperature softening properties of the filling material, the repaired cracks will change with the temperature after a year. The surface layer shrinks and re-cracks

Especially low temperature performance is generally poor, many sealants will tear with the crack wall in winter and lose the waterproof effect, which has become a key factor restricting the development of asphalt pavement joint filling technology

The existence of this problem increases the workload and material cost of pavement maintenance

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