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 ...

For large areas of grout discoloration, spray with hydrogen peroxide, let sit and rinse/wipe. Note that hydrogen peroxide can ...

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 ...

"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 ...

Nobody knows who did it first, or when. But by the 2nd or 3rd century BCE, Roman engineers were routinely grinding up burnt limestone and volcanic ash to make caementum: a powder that would start to ...

Three new surface finishes for as-cast formed concrete are defined in the new ACI 301-10 Specifications for Structural Concrete, which supersedes ACI 301-05. Rough-Form and Smooth-Form As-Cast ...