How best is it possible to assess the state of concrete in a road pavement, bridge deck or tunnel wall? One of the most reliable ways is to take a core of concrete from the structure to analyse and test in the laboratory. One downside to this method is that doing the test creates weak points in the structure that must then be repaired. Another is that the frequency of such cores cannot be too great – so it is possible that some problem areas will be missed. New technologies from the world of geospatial eng
A study sponsored by the American Glass Bead Manufacturers' Association reveals that "a growing number of imported glass bead products for highway markings exhibit high concentrations of heavy metals, including arsenic and lead."
After more than a decade of road works and repairs outside his business, one Winnipeg, Canada, resident told World Highways that enough is enough.
“I’ve got no malice towards the contractors,” Gordon Partridge told World Highways. “Contractors are simply where they are told to be. It’s the city officials. The left hand doesn‘t always know what the right hand is doing.”
What he has is “ambivalence and frustration at the situation”. As the health centre owner and chiropractor explains, “there’s two seas
