CONCRETE 8672

(a)   - No Metals or no other reinforcing materials

(a)   -With metals or with other reinforcing materials

Materials to make a concrete

(a)  

(Classification of Cement)

is a general purpose Portland cement suitable for all uses where the

special properties of other types are not required. It is used where cement or concrete is not subject to specific exposures, such as sulfate attack from soil or water, or to an objectionable temperature rise due to heat generated by hydration.

(a)  

which is preferred

when high early strength concrete is desired

(a)  

used in concrete structures designed to resist chemical attack

(a)  

used for massive sections designed to reduce the heat of hydration.

(a)   is specially blended to provide a lower heat of hydration in concrete. This unique attribute makes it ideal for mass concrete pours where the rate of temperature rise and the maximum temperature achieved must be controlled in order to reduce the risk of thermal cracking.

with a low hardening characteristics.

(a)   is used mainly to produce concretes used in underwater and underground structures.

Due the property of rapid hardening and strength, it is widely used in marine construction and sewer infrastructure. (a)   is also used in refractory concretes where it requires more strength at very high temperature.

Types of gravel or aggregates

(a)