一种道路修补混凝土材料及其制备方法
By constructing a controlled rapid-hardening cementitious system and a pre-wetted, water-absorbing porous fine aggregate internal curing unit, combined with low-dosage polypropylene microfibers, the problems of early water loss shrinkage and interfacial stress concentration in road repair materials were solved, achieving early strength establishment and long-term stability improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing road repair materials suffer from problems such as short working time, rapid water loss in early age, insufficient volume stability, susceptibility to shrinkage and cracking, and insufficient deformation coordination between the repaired material and the old road concrete, which can easily lead to interface stress concentration.
A controlled rapid-hardening cementitious system, a pre-wetted, water-absorbing porous fine aggregate internal curing unit, and a low-dosage polypropylene microfiber crack control unit are used to construct a synergistic relationship. The controlled rapid-hardening cementitious system is formed by sulfoaluminate cement and silicate cement. The pre-wetted, water-absorbing porous fine aggregate is used as the internal water supply unit, and polypropylene microfiber is used for crack control. Combined with a low-dosage polycarboxylate superplasticizer, retarder, and defoamer, the workability and molding stability are optimized.
It enables rapid establishment of early strength, reduces the risk of early-age water loss and shrinkage cracking, improves the interfacial bonding reliability and overall stability between the repair material and the old concrete, and ensures the long-term performance of the material.
Smart Images
Figure CN122167116B_ABST