Concrete. Major Topics. History Uses Materials Used To Make Concrete Cement Aggregate Water Admixture. Major Topics con’t. Testing Slump Test Compressive Strength Test Air Content Test Strength Placing. Major Topics con’t. Transporting Curing Finishing Reinforced Concrete
The History of Concrete: Textual
The Hoover Dam, outside Las Vegas, Nevada,
was built in 1936. 3 ¼ million cubic yards
of concrete were used to construct it.
Concrete Admixtures - The Concrete Network
*** Data from Architectural Graphics Standards, 2000
**Concrete sample is placed into a 12”
sheet metal cone using 3 equal volumes.
**Each layer is tamped 25 times with a
bullet-nosed 5/8” by 24” rod.
**Last layer is leveled off with the top of the
**Cone is removed
**The vertical distance from the top of the
metal cone to the concrete is measured
***This is according to the author (see page 103)
In 2001 the ACI (American Concrete Institute) published research to indicate this is not the case