Roadbed defect recognition and high polymer grouting rapid reinforcement technology

Abstract

The invention discloses a subgrade defect identification and polymer grouting fast strengthening technology, which utilizes a falling weight deflectometer (FWD) and a ground penetrating radar (GPR) to detect and evaluate the performance of the subgrade, identify the defect of the subgrade and the position of the defect, and realize a lossless and fast identification of the subgrade defect. A grouting hole is perforated on the section that needs defects treatment and polymeric materials are injected into the hole to repair the subgrade. The maintenance technology has the advantages of speedy construction, good durability, strong pertinence and excellent waterproof performance of the injected polymeric materials, which not only saves a large amount of funds and construction periods and avoids the adverse social affect caused by long affected traffic, but also is beneficial to environmental protection and resource-saving. The subgrade defect identification and polymer grouting fast strengthening technology of the invention integrates the FWD and the GPR subgrade defect lossless identification technology with the polymer grouting fast maintenance technology, thus providing a whole set of advanced, efficient, economical and practical technology for identifying, strengthening and maintaining the subgrade defect.

Description

technical field [0001] The invention belongs to roadbed pavement detection and maintenance technology, in particular to roadbed defect recognition and high polymer grouting rapid reinforcement technology. Background technique [0002] At present, my country's high-grade highway construction is in a stage of rapid development. As an important part of the pavement structure, the subgrade not only provides the basic conditions for vehicles to run on the road, but also serves as a supporting structure for the pavement, which plays a vital role in the performance and service life of the entire pavement. However, due to the quality of the roadbed, many pavements have insufficient compaction or voids. After opening to traffic, early damage to the pavement, such as subsidence and cracking, will soon appear. Soon after completion, it will not be able to meet the needs of vehicle traffic, and the amount of maintenance projects will increase. The larger the size, the higher the requir...

AI Technical Summary

Problems solved by technology

Therefore, although the durability of polymer materials can reach more than 10 years, the effect of grouting maintenance cannot be guaranteed.