一种城市道路用的微胶囊改性材料制备及裂缝修复研究

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中图分类号：TQ178 文献标志码：A文章编号：1001-5922（2025）12-0091-04

Research on the preparation and crack repair of a microcapsule modified material for urban roads

LIU Cong （Chengdu Municipal Engineering Design and Research Institute Co.，Lid.，Chengdu 61OO23，China）

Abstract：In order to improve the crack repair effect of urban road cement-based materials，this paper first prepares microcapsules by E-51 epoxy resin and urea-formaldehyde resin，and then combines basalt fiber，cement and other materials to prepare cement-based materials，and explores the efect of microcapsule additionon the performance of the material，and studiesthecrack repair technologyof urban roads.The resultsshow that when the content of microcapsules is 5% ，the comprehensive performance of cement-based materials is the best.At this time，the fluidity of the cement-based material is 183mm ，the28 d compressive strengthis 43.5 MPa，the shrinkage rate is （204号 123×10-6 ，and the crack area repair rate is 91.3% . In summary，the fiber microcapsule cement-based material exhibits excellent crack self-healing ability，which can provide new materialand technical reference for solvingthe problemof early micro-crack prevention and control of urban roads，and is of great significance for prolonging the service life of roads.

Key words： microcapsules;cement-based materials;compressive strength;the shrinkage rate;repair rate

城市道路是人们生活中重要的基础设施。（剩余6230字）