Road base diseases are one of the main factors affecting the performance of semi-rigid subgrade roads.For road base diseases,maintenance personnel typically use grouting technology for internal repair.Geopolymer grouting technology is a new technology adopted by the highway management and maintenance department in Liaoning Province for semi-rigid base layers.Based on the application of geopolymer grouting technology in expressway projects in Liaoning Province,an in-depth analysis and research has been conducted on its implementation and application effects.The results indicate that geopolymer grouting technology can effectively repair road base diseases,reduce the road de-flection,delay the degradation of road performance and the recurrence of diseases,and thus extend the service life of highways.
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