Concrete pavement repairing material and preparation method and application thereof

Abstract

The invention provides a concrete pavement repairing material and a preparation method and application thereof, and belongs to the technical field of concrete pavement repairing materials. The concrete pavement repairing material comprises the following raw materials in parts by weight: 37-53 parts of rapid-solidification and quick-hardening high belite sulpho-aluminate cement, 35-58 parts of a fine aggregate, 0.15-0.5 part of a water reducing agent, 1-6 parts of fiber, 0.05-0.2 part of an anti-foaming agent, 0.02-0.3 part of a solidification accelerator, 2-8 parts of rubber powder and/or 0.01-8 parts of an emulsion. The concrete pavement repairing material has excellent hour strength, higher flexural strength and tensile bond strength, and has good waterproof and crack resistant, impermeability and frost resistant properties, so that the repairing material is suitable for the rapid repairing of the concrete surface layer of highways, airports and other buildings.

Description

technical field [0001] The invention belongs to the technical field of concrete pavement repair materials, and in particular relates to a concrete pavement repair material and its preparation method and application. Background technique [0002] Concrete surfaces such as airport pavements, high-grade highways, bridges, etc. are sanded due to long-term wear and tear, bleeding during construction, freezing or water loss during maintenance. After the block falls off and is under heavy pressure, cracks and potholes appear on the ground. The surface needs repair and maintenance. If it can be dealt with in time, only the concrete surface needs to be repaired and maintained, which can greatly improve the service life of the concrete and reduce the cost of use. [0003] Concrete pavement repairs or repairs that require rapid curing to ensure smooth traffic flow have fewer repair materials and less-than-perfect performance. For example, the patent application No. 200510038105.7 disc...

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Problems solved by technology

[0003] Concrete pavement repairs or repairs that require rapid curing to ensure smooth traffic flow, and such repair materials are less available and perform less well

For example, the patent application number 200510038105.7 discloses a super-thin layer rapid repair material on the surface of roads and airport runways, but the repair material has a flexural strength of 2-4 MPa and a compressive strength of 20-30 MPa after 2-3 hours , and cannot achieve excellent flexural strength and compressive strength in a short time

Patent CN101830684B discloses a super-early-strength polymer rapid repair mortar material. The compressive strength of the repair material can reach more than 25MPa after 3 hours, and it cannot achieve excellent compressive strength in a short time.

In order to ensure smooth traffic, its repair or repair needs to be cured quickly, and repair materials with higher hourly strength are required; the flexural strength is the most important index of road concrete, but the flexural strength of the existing technology is low; the surface repair mortar is only repairing The use performance of the concrete surface cannot bear the load alone, and it is firmly bonded to the base concrete, and the joint bearing with the base concrete is a prerequisite

The base concrete generally has a long age, large aggregate particle size, and low dimensional change rate, which requires a small deformation of the repair mortar, and the shrinkage rate in the prior art is relatively high.

In addition, the repair mortar requires a high tensile bond strength, while the repair mortar material index in the prior art is low

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