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).
Top 10 Universities and Colleges in USA. 1. Stanford University, California. Stanford University was founded in 1885 by Jane and Leland Stanford in memory of their only child. The University's pristine campus, one of the largest in the United States, is located in Californiaâs suburban Bay Area some 30 miles from San Francisco.