Cement concrete surface layer function gradient material and preparation method thereof

By employing a composite surface layer structure and optimizing material composition in airport cement concrete pavement, the problems of poor interlayer deformation coordination and insufficient freeze-thaw resistance and impermeability have been solved, achieving a high-durability and low-cost airport pavement material design.

CN122685384APending Publication Date: 2026-09-04BEIJING JINGANG ROAD ENGINEERING CONSTRUCTION CO LTD +2
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Patent Information

Application Number
CN202611116112.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-27
Publication Date
2026-09-04

AI Technical Summary

Technical Problem

Existing airport cement concrete pavements exhibit poor interlayer deformation coordination under extreme environments, insufficient frost and water resistance, and cannot meet comprehensive durability requirements such as high impact resistance and high wear resistance, while also having high construction costs.

Method used

The composite surface structure includes a high-performance concrete layer and a green concrete support layer. By optimizing the material composition and construction process, controlling the coefficient of linear expansion and the ratio of flexural elastic modulus, reducing the water-cement ratio, adding synthetic fibers and ultrafine active mineral admixtures, and using recycled aggregates and manufactured sand, the interlayer synergistic deformation and durability performance are achieved.

Benefits of technology

It significantly improves the frost resistance, impermeability, and wear resistance of airport pavements, extends their service life, and reduces project costs, making it suitable for large-scale mechanized construction.

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Abstract

The application discloses a cement concrete surface layer functional gradient material and a preparation method thereof, and has a composite surface layer structure, comprising a first concrete layer and a second concrete layer; the first concrete layer comprises cement, mineral admixture, synthetic fiber, coarse aggregate, fine aggregate, water and a first water reducing agent; the second concrete layer comprises cement, coarse aggregate, fine aggregate, water and a second water reducing agent; the coarse aggregates of the first concrete layer and the second concrete layer are of the same lithology; the linear expansion coefficient of the first concrete layer is 10*10 ‑6 / °C±0.5*10 ‑6 / °C, the linear expansion coefficient of the second concrete layer is 8*10 ‑6 / °C±0.5*10 ‑6 / °C, and the flexural elastic modulus ratio is 1.05-1.1. Through interlayer material collaborative design, the application remarkably improves the anti-freezing, anti-permeation, wear resistance and interlayer deformation coordination, prolongs the service life of the pavement, and is especially suitable for high requirement engineering such as airport pavement.
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