Airfield runway pavement layer prepared from high-toughness impact-resistant cement-based composite material

Abstract

The invention discloses an airfield runway pavement layer prepared from a high-toughness impact-resistant cement-based composite material. The airfield runway pavement layer prepared from the high-toughness impact-resistant cement-based composite material comprises a first ingredient and a second ingredient. The first ingredient comprises 22 to 45wt% of cement, 15 to 33wt% of waste, 20 to 33wt% of sand, 13 to 20wt% of water, 2 to 6wt% of a polymer emulsion, 0.2 to 1.0wt% of a water reducer, 0.5 to 1.0wt% of an antifoaming agent and 0.2 to 0.6wt% of a curing agent. The second ingredient comprises fibers, wherein the use amount of the fibers is 0.5 to 5wt% of the total amount of the cement, the waste and the sand. The high-toughness impact-resistant cement-based composite material has the advantages of ultrahigh toughness, good anti-permeability, good wear resistance, good impact resistance and green environmental protection performances. The airfield runway pavement layer prepared from the high-toughness impact-resistant cement-based composite material satisfies airfield runway concrete material performance requirements, and has greatly improved fracture resistance, anti-permeability and impact resistance. The high-toughness impact-resistant cement-based composite material can be used as a repair material of a bridge floor and a road pavement.

Description

technical field [0001] The invention relates to an airport runway pavement material, in particular to a high-toughness impact-resistant cement-based composite material airport runway pavement layer. Background technique [0002] The road surface of the airport runway is mostly concrete pavement, and a very small part is made of asphalt. Concrete used as an airport runway has poor wear resistance, is easy to shrink and crack, and is brittle. The impact force and heavy load of the aircraft landing often cause local cracks or even fractures. The service life is short and the cost of repeated maintenance is high. Each repair will consume a certain amount energy, which has a certain burden on the environment. In response to the above problems, polymer concrete is mainly used as the repair material at present. Although it has achieved certain results, it has little improvement in the toughness and impact resistance of the matrix. Although asphalt concrete has the advantages of b...

AI Technical Summary

Problems solved by technology

Concrete used as an airport runway has poor wear resistance, is easy to shrink and crack, and is brittle. The impact force and heavy load of the aircraft landing often cause local cracks or even fractures. The service life is short and the cost of repeated maintenance is high. Each repair will consume a certain amount of energy, a certain burden on the environment

In view of the above problems, polymer concrete is mainly used as the repair material at present. Although it has achieved certain results, it has little improvement in the toughness and impact resistance of the matrix.

Although asphalt concrete has the advantages of being beautiful and good for repair, it has poor water and high temperature stability, high cost and is not durable, which is not conducive to the construction and repair of airport pavement