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 released into the Gulf of Mexico? Some listeners have ...

Q. What is the difference between concrete block and poured concrete foundation walls? Which one is better? The lot I am going to build upon has a seasonably high water table. Which of the wall ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The use of concrete as a construction material has been around for millenia: Historians say that ancient ...