Authors J.W. Bullard, E.J. Garboczi, W.L. George, N.S. Martys, S.G. Satterfield, J.E. Terrill Publication Date 2011 Name of Publication Source Concrete International Publisher Concrete International/CI Volume 33 Issue 1 Source Link http://concreteinternational.com/pages/featured_article.asp?FromSearch=True&…