CEMENT CONCRETE

Definition :-

The mixture prepared by mixing desired quantity of water in dry mix of cement (binding material, cement:fine aggregate,sand:course aggregate,pebbles or crushed stone). after setting it becomes harder than stone.

Reinforced cement concrete (R.C.C):-

When cement concrete used with mesh steel bars to achieve desired shape of structure. It is tered as reinforcement cement concrete.

Application of cement concrete:-

Same as mortar , the cement concrete used in any form shall be proportioned (mixing of binding material , fine aggregate , course aggregate) very carefully. This mix of cement concrete is denoted as X:Y:Z ( x=binding material that is cement y=fine aggregate that is sand and z=course aggregate that is crushed stone)

Standardization of concrete:-

As per BIS:456: 1978, concrete is designated in seven grades by [M x] , where ‘M’ stands for mix and ‘x’ indicates the specified compressive strength of that mixture after 28 days in K/N mm2.

Precast concrete :- 

Precast concrete refers to product which are factory made with high standard of finishing. These are brought to site and are ready to use directly with minor jointing. Some of the common product are:-

Concrete Building Block

Concrete blocks are gray in color and substantially free from crack and chips.the nominal dimension shall be 4”x8”x16”. concrete block are also used for block manholes.

Concrete Paving Block

Concrete paving block are generally used for paving for street and parking.