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).
Arizona State University (ASU) is the largest public university by enrollment in the United States, with more than 83,000 students and 3,300 faculty members. ASU's charter, approved by the board of regents in 2014, is based on the New American University model created by ASU President Michael M. Crow.