Abstract
With the increase of vehicle load and the pavement’s service life, the cement concrete pavement’s diseases are also gradually increased. Among them, the empty beneath slab is the most common disease and main safety problem. And it has seriously affected the usability and durability of the road. Press-oar is the most effective treatment means for the void bottom slab, and it has high performance requirements for grouting materials. Therefore, several common domestic and international grouting materials are analyzed and reviewed. And their advantages, disadvantages and improvement methods are pointed out. This will lay a foundation for the development of slab bottom void grouting materials in the future.
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