Concrete question?

Question

What is the difference between class 1 concrete and class 2 concrete?

Answer 1

The ratio of materials in the mix.

Answer 2

The different types of classes refer to the types of cement.
Type I is a general purpose Portland cement suitable for most uses.
Type II is used for structures in water or soil containing moderate amounts of sulfate, or when heat build-up is a concern.
Type III cement provides high strength at an early state, usually in a week or less.
Type IV moderates heat generated by hydration that is used for massive concrete structures such as dams.
Type V cement resists chemical attack by soil and water high in sulfates.
Types IA, IIA and IIIA are cements used to make air-entrained concrete. They have the same properties as types I, II, and III, except that they have small quantities of air-entrained materials combined with them.

So, Class I concrete refers to concrete made with Type 1 Cement. Class 2 is made with Type 2 cement. The practical difference is Class 1 is a general type of concrete mix, while Class 2 is a more specialized use for moderate sulfates & heat areas.

The strength of concrete, as well as the mixture (or design) of the concrete, is not dependent upon the class. You can use a 15,000 PSI Class 1 Concrete, a 3,000 PSI Class 5 concrete, or vice versa.

Answer 3

I'd say something in the mixture... Concrete has many different types. Foundations, roads, and structural strength. I'd ask Mr. Google, or howstuffworks.com

Answer 4

The difference is the amount of portland cement used in the mixture.

Answer 5

i think this is according to the code classification you should refer to what is meant by the text.