materials smaller than 9 mm. in diameter.

(a)  

materials over 9 mm. in diameter.

(a)  

is classified into three

types (low density, moderate strength and structural

concrete) depending upon the kind of aggregates

used in mixing, which predetermines their weight.

(a)  

is also known as

structural concrete weighing from 145 to 152

pounds per cubic foot generally assumed to be 150

pounds per cubic foot or 3300 kg/cum.

(a)  

is used for shielding against gamma and radiation in nuclear reactor and other similar structure. This is also used as counter weight for a lift bridge. The contents. of

heavyweight concrete are cement, heavy iron ores,

crushed rock, steel scraps, punching or shot (as fine)

is also used.

(a)  

this method of test requires

a fabricated metal

(a)  

refers to the state of fluidity of

freshly mixed concrete.

(a)  

This type of test is the process applied in

determining the strength of concrete.

(a)