Caterpillar is now releasing a new guide to asphalt compaction. This publication offers readers a comprehensive guide to asphalt compaction processes, discussing basic factors and forces involved. The publication covers in detail key points such as methods and specification, rolling patterns and joint compaction. A more general section covers compaction issues, while there is also a glossary. A wide range of examples is given and the publication is also illustrated with high quality images and diagrams to b
World Highways caught up with man who developed the concept of asset management for roads in the 1960s. Dr Ralph Haas is still researching in his native Canada, and commenting on potholes.
The e-mail was brief. “You won't believe this, but I think I'm the last person on the planet without a cell phone.”
That was quite an admission from Ralph Haas, distinguished Canadian professor emeritus. He was one of several civil engineers in the 1960s who developed the concept of managing roads as an integrated
Researchers at Nottingham Trent University in the UK are developing smart scanning technology using existing cameras to detect early signs of pothole development
The technology scans roads for ravelling - the loss of aggregates from the asphalt which leads to potholes and cracks.
Combined with 2D and 3D scanners on a pavement monitoring vehicle, a computer vision algorithm can examine the road with accuracy at traffic speed during day or night.
The system works by detecting different textures of th
