Application Of Ground Penetrating Radar For Asphalt Pavement Detection

With the rapid development of business requirements for highway road quality detectiontechnology is increasing. The traditional detection methods are random, low efficiency, pooraccuracy, and high economic costs, destructive and easy to lead to increase road damage.Ground Penetrating Radar (referred to as GPR) is a new non-destructive testing of highwayequipment, which is the use of the under ground media to detect differences in electricalproperties of an electromagnetic detection method. To detect it in its speed and high resolutionfor detection of objects without damage, it can get the information advantages of continuousimaging in the shallow strata fine structure and high-resolution hidden detection, which hasbeen widely used and achieved satisfactory results.This paper describes the development of ground-penetrating radar, the basic principles ofradar detection, surface radar system components and analytical measurement parameters.And based on solid engineering practice, discusses the application of ground penetrating radarin road engineering structures, mainly in the following aspects:(1) Briefly explain the development situation of ground penetrating radar (GPR) at homeand abroad, and domestic and foreign present situation of the application of groundpenetrating radar (GPR) in the road engineering, and expounds the paper selected topicsignificance as well as the specific research content.(2) Description of ground penetrating radar systems, electromagnetic wave propagationcharacteristics and propagation characteristics; introduce ground-penetrating radar works androad use ground-penetrating radar detection performance and performance indicators. Clearground penetrating radar nondestructive testing technology in all aspects, namely the surveyline layout, data acquisition, data processing and data interpretation. Wherein the dataprocessing method using a depth studies to verify the actual data and the correspondingmethod of treatment effect.(3) By ground penetrating radar (GPR) on the real road engineering structure layerthickness detection, are generally used more to verify that the ground penetrating radar (GPR)was developed for the determination of the thickness accuracy. And by ground penetratingradar (GPR) determination of the thickness of the compared with the core sample, todetermine the corresponding error control.(4) In a rut in the road engineering is a common phenomenon, can be achieved by groundpenetrating radar (GPR) was carried out on the road of rut detection research. From thepavement rutting depth, length and the geometric elements such as rut formation factor, theinfluence of ground penetrating radar (GPR) is used to test the data related to the targetedtreatment. In a rut geometric elements and ground penetrating radar (GPR) to determine the data after processing related links to rutting types of discrimination. This article through tostudy the formation of concrete pavement rut cross-section rutting type identification method.(5) Selection based on cheng-yu expressway section of test section, ground penetratingradar (GPR) in the test section of road quality detection of related research. In combinationwith the determination of the ground penetrating radar (GPR) data and contrast calibration oftest section thickness, the testing results.