GPR as a crack detection tool for asphalt pavements: Possibilities and limitations

Cracking in asphalt pavement is a distresses often requiring urgent measures. GPR has been proved by numerous scientists as a fast and reliable asphalt pavement characterization tool. Whether GPR can be applied as a crack detection tool is a question to be answered. To find out the influencing parameters, e.g., crack fill, atmospheric condition, etc., GPR surveys were carried out on asphalt test pavements. Multiple techniques were used for data processing. Possibilities and limitations are documented.