A semi-flexible precast pavement material and a method of making the same

By combining negative pressure grouting technology and predictive models, the problems of uncontrollable flowability and grouting quality of semi-flexible precast pavement materials have been solved, achieving efficient and dense grouting results, which are suitable for rapid construction in heavy-duty traffic pavements and ports.

CN122167074APending Publication Date: 2026-06-09WUHAN UNIV OF TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Filing Date
2026-03-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing methods for grouting semi-flexible precast pavement materials suffer from problems such as high requirements for grout fluidity, uncontrollable grouting quality, and low construction efficiency, making it difficult to meet the demands for rapid construction and high quality.

Method used

By employing negative pressure grouting technology, the negative pressure intensity P and the negative pressure application time t are controlled through a prediction model of the target grouting rate η(P,t,D) to ensure that the grouting rate of the grouting material in the pores of the precast matrix reaches or exceeds the target grouting rate, thereby achieving efficient and high-density filling.

Benefits of technology

It achieves efficient and dense filling of semi-flexible precast pavement materials, improves the quality stability and performance of the materials, shortens the construction cycle, and is suitable for rapid construction in heavy-duty traffic pavements and ports.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122167074A_ABST
    Figure CN122167074A_ABST
Patent Text Reader

Abstract

This invention discloses a semi-flexible precast pavement material and its preparation method. The method employs a negative pressure grouting precasting process. Using a prediction model of the target grouting rate η(P,t,D), based on the porosity of the precast matrix and the fluidity of the grout, and through precise control of "negative pressure (P), grout fluidity (D), negative pressure application time (t), and precast matrix porosity (φ)," the grouting rate to the precast matrix pores reaches or exceeds the target grouting rate, ensuring the uniformity and stability of the semi-flexible precast pavement quality. This method can shorten the grouting time to 90 seconds or even lower, while ensuring a grouting rate greater than 98% and achieving grouting with a fluidity as low as 150 mm, reducing the reliance on high fluidity in existing grouting methods. This semi-flexible precast pavement material can be directly transported to the site for rapid assembly, significantly shortening the construction cycle and making it particularly suitable for rapid pavement construction and maintenance.
Need to check novelty before this filing date? Find Prior Art