Quikrete, a manufacturer of packaged concrete products for the building and home improvement markets, has announced the six winners of the Quikrete “What America’s Made Of” sweepstakes. The winners, who entered the contest at DannyLipford.com, each received a copy of the "Quikrete Guide to Concrete" book and up to $599 in Quikrete products to help build a patio, BBQ fire pit, walkway or outdoor kitchen.