Concrete is one of most durable manmade materials, but even this old industry workhorse has its weaknesses. Exposure to harsh weather, reactions with common elements, and poor construction can all ...

Was it "cement," as NPR has been reporting, or "concrete" that failed at the bottom of the BP well, causing millions of gallons of oil to be... Did Cement Or Concrete Fail In Oil Well? MICHELE NORRIS, ...

Cement is one of those materials you don’t think about until it breaks — until the bridge you drive across, the house you live in, or the sidewalk you walk on shows cracks. Yet it is everything ...

SALEM, Ore. (AP) - Core samples taken from the $34 million Salem courthouse and tested for strength indicate the concrete does not meet design specifications. The confirmation of previous tests dims ...