Concrete is a mixture of cement, water, sand, gravel, crushed rock, or other aggregates. Sometimes, one or more admixtures are added to change certain characteristics of the concrete, such as workability, durability, and time of hardening.
Top 100 Colleges by Highest Tuition. Here are the top 100 most expensive colleges by tuition for the 2008-2009 school year. The latest numbers can be found in our most expensive colleges ranking. Notes: Some colleges like Bates College, Colby College, Middlebury College, and Union College have a comprehensive fee (tuition + room/board).
Columbus is the home of two public colleges: The Ohio State University, one of the largest college campuses in the United States, and Columbus State Community College. In 2009, The Ohio State University was ranked No. 19 in the country by U.S. News & World Report for best public university, and No. 56 overall, scoring in the first tier of schools nationally. Some of OSU's graduate school programs placed in the top 5, including: No. 5 for best veterinary program and No. 5 for best pharmacy program.