Adhesive cement material for repairing hidden spalling of asphalt pavement and preparation method of adhesive cement material

Abstract

The invention discloses a mucilage material for repairing hidden spalling of an asphalt pavement and a preparation method of the mucilage material. The mucilage material comprises the following components in parts by weight: 45-50 parts of cement; 20 to 25 parts of water; 20 to 25 parts of waterborne epoxy emulsified asphalt; 2-5 parts of nano silica fume; 0.5 to 1.5 parts of an expanding agent; and 0.5-1 part of a water reducing agent. The adhesive cement material has high permeability, high bonding strength and hydrophilicity, can react with moisture in recessive spalling to generate cement gel so as to increase the bonding strength between the cement adhesive cement and a base material, has higher breaking strength, can have better deformation coordination with the base material, and can be used for preparing the cement adhesive cement. In addition, the adhesive cement material has the micro-expansion characteristic and toughness, pores of a base material can be better filled, meanwhile, brittle cracking is reduced, and finally the pavement performance and the service life of the hidden peeling position of the asphalt pavement are improved and prolonged.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a high-permeability, high-toughness mortar material for repairing hidden spalling of asphalt pavement and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the traffic volume of the expressway is also increasing rapidly. At the same time, due to the obvious overload phenomenon, under the coupling effect of the vehicle load, temperature, humidity and other factors, the road surface begins to appear different degrees of damage, mainly manifested as cracks and cracks. Potholes and other diseases, and there are many asphalt pavements that are loose but have not yet peeled off to form potholes, that is, hidden spalling points. If not treated, they will continue to develop, and loose spalling will further form under the action of vehicle loads. Pothole. In the end, due to the existence of recessive spalling point ...

AI Technical Summary

Problems solved by technology

Among them, the temporary quick repair of cold patch has the disadvantages of serious insufficient durability of cold patch, short-term damage, high price, and long strength formation time; the repair of hot-mix mixture is greatly affected by the climate, and the construction process is complicated. It takes a long time, requires a lot of manpower, material resources, time, etc., and at the same time, the construction quality is difficult to control due to the small amount

For the hidden peeling points of asphalt pavement, there is currently no good treatment for this type of asphalt pavement disease, and it can only be allowed to develop and eventually form potholes

At the same time, some of the current rapid repair materials for asphalt pavement, such as cement-based, emulsified asphalt, resin, etc., generally have problems such as poor bond strength, obvious shrinkage, low strength, and poor deformation coordination with the base material. Achieve better repair effect

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