(24) INSTITUTION OF HIGHER EDUCATION-The term institution of higher education' has the meaning given that term in section 101(a) of the Higher Education Act of 1965.
Constituent Materials of Concrete. Concrete is a composite material consisting of a binder, which is typically cement, rough and fine aggregates, which are usually stone and sand, and water. These comprise the constituent materials of concrete.
The time period during which concrete was first invented depends on how one interprets the term concrete. Ancient materials were crude cements made by crushing and burning gypsum or limestone.