A double-mixed grouting material for pavement repair and its preparation method

Abstract

The invention relates to a double-mixed grouting material for pavement restoration and a preparation method thereof, comprising 50-70 parts of Portland cement, 20-30 parts of aluminate cement, and 5-8 parts of silica fume in terms of parts by mass , 10-15 parts of fly ash, 8-12 parts of barite powder, 1-3 parts of retarder, 10-15 parts of water-based epoxy resin, 3-8 parts of polyurethane, 0.5-0.8 parts of antioxidant, stable defoaming 0.1-0.3 parts of agent, 1-4 parts of coupling agent, 0.3-0.5 parts of surfactant, 3-8 parts of waste rubber powder, 0.05-0.2 parts of cement strengthening agent, and 0.1-0.3 parts of water-retaining agent. The material prepared by the invention has high permeability, impact resistance and wear resistance, high strength, high toughness, high temperature resistance and good durability, can consolidate loose particles and has good bonding performance with the original pavement concrete, and is suitable for many A road repair.

Description

technical field [0001] The invention relates to the technical field of grouting materials, in particular to a double-mixed grouting material for pavement repair and a preparation method thereof. Background technique [0002] With the rapid development of our country's national economy, the number of civil airports and the density of flights in our country have increased significantly. The airport undertakes heavy cargo and passenger transport tasks, and can quickly transport relief materials during war preparations and disaster relief, playing an irreplaceable role. effect. However, the airport runway is repeatedly subjected to the huge load of aircraft takeoff and landing (such as the take-off weight of Boeing 747 up to 350t), the high-temperature airflow generated by the strong friction between the wheels and the road surface (or the high-temperature airflow ejected by jet aircraft at military airports), and The impact of severe cold and heat, the harsh natural environmen...

AI Technical Summary

Problems solved by technology

Although cement-based grouting materials have the advantages of rich raw material sources, low price, and high early strength, due to the coarse cement particles, they can only be poured into pores with a diameter greater than 0.2 mm, and it is difficult to pour into medium and small pores. The material also has problems such as poor permeability, low toughness, and poor adhesion to the original pavement concrete; chemical grouting materials have low viscosity, strong permeability, and can be treated for anti-seepage or leakage, but their strength is low, easy to age, and poor in high temperature resistance

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