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).
According to Fall 2009 student populations, the largest U.S. universities are as follows (largest to smallest): Arizona State University (55,552 students) â With 55,552 students, Arizona State University, also known as ASU, is the countryâs largest university. ASU consists of four campuses located in the same metropolitan area; however, this count is for the Tempe, Arizona campus, only.