Decision-making System of Old Pavement Treatment in Highway Reconstruction and Expansion Based on Non-destructive Testing Technology:Taking the Guangzhu East Expressway Reconstruction and Expansion Project as an Example
Due to the inability to meet the continuous growth of traffic demand,the expressways built in the early stage have been continuously rebuilt and expanded.How to quickly and accurately evaluate the old road conditions and systematically carry out treatment and repair according to the road surface demand is a major problem in the industry.Based on the reconstruction and expansion project of Guangzhu East Expressway,the experimental research was carried out.The data of pavement surface and interior damage was collected by non-destructive testing technology.The characteristics and mechanism of pavement damage in different lanes and layers were analyzed.Combined with the functional repair requirements of different lanes and sections,the decision-making system of old road treatment was established.The project carried out the old road treatment according to the decision-making system.After evaluation,the old road structure has been repaired and improved to varying degrees according to the demand,which verifies that the decision-making system has both economy and implementation effect.
reconstruction and extension of pavementold pavement treatmentnondestructive testingdecision-making system
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