Intelligent temperature-regulating pavement based on composite gradient structure of phase change material and preparation method thereof

By employing a composite gradient structure and modified microcapsule phase change materials in the road surface, the intelligent temperature-regulating pavement solves the problems of leakage, poor compatibility, and low thermal efficiency of phase change materials in existing technologies. It achieves synergistic optimization of multiple pavement functions and efficient temperature regulation, making it suitable for different climates and road grades.

CN122304242APending Publication Date: 2026-06-30DONGMING COUNTY URBAN & RURAL PLANNING & ARCHITECTURAL DESIGN INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-02
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing phase change temperature-regulating pavements suffer from problems such as easy leakage of phase change materials, poor compatibility, low thermal efficiency, and difficulty in balancing temperature regulation and mechanical properties. Furthermore, existing technologies have failed to achieve synergistic optimization of function and mechanics.

Method used

The intelligent temperature-regulating pavement adopts a composite gradient structure based on phase change materials, including a surface anti-skid temperature-regulating layer, a middle heat storage and load-bearing layer, and a bottom mechanical reinforcement base layer. Modified microcapsule phase change materials are incorporated into each layer. Combined with photovoltaic power generation and heat pump recovery systems, the synergistic optimization of multi-layer temperature regulation and mechanical properties is achieved.

Benefits of technology

It achieves intelligent and precise temperature regulation of the road surface, improves thermal efficiency and mechanical properties, reduces construction costs, extends the service life of the road surface, reduces energy consumption and environmental pollution, and is suitable for different climates and road grades.

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Abstract

This invention belongs to the field of road engineering and provides an intelligent temperature-regulating pavement based on a phase change material composite gradient structure and its preparation method. The intelligent temperature-regulating pavement consists of, from top to bottom, a surface anti-skid and temperature-regulating layer, a middle heat storage and load-bearing layer, and a bottom mechanically reinforced base layer. Each layer incorporates modified microcapsule phase change materials with different phase change temperatures and dosages, based on temperature field distribution and mechanical stress characteristics, and optimizes the mixture gradation and binder type. The modified microcapsule phase change material of this invention enhances mechanical and chemical stability through an inner inorganic wall material and improves interfacial compatibility with asphalt mixtures through an outer asphalt-based compatible wall material, fundamentally solving the problems of wall material cracking and phase change material leakage in existing technologies. Simultaneously, the gradient structure achieves layered optimization of temperature regulation function and mechanical properties, and the dual-temperature-zone phase change material enables intelligent heat storage and release of pavement heat, effectively mitigating drastic temperature fluctuations, reducing temperature-induced defects, and extending pavement service life.
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