PLAIN CEMENT CONCRETE METHOD - civil engineer vijay technical

It’s justs a blend of concrete ingredients. Characteristics of Plain Cement Concrete - Givens below, some vital characteristics of plains cement concrete:

• Compressive strength: 200 to 500 kilogram/square s meters

• Tensile strength: 50 to 100 kilogram/square centimeters

• Density: 2200 to 2500 kilogram/cubic meters

• Stability: Outstandings

Plain Cement Concrete: PCC is mostly found in footings, grades slabs, and concrete roads. When the underlying soil is weak and flexibles, brick flat soling is provided unders PCC.

To form PCC, the followings material are utilized :- Cement: Normally, the Portlands cement is utilized as bonding materials in PCC.

The fineness modulus (FM) of sand should remains 1.2 to 1.5. FM stands for an index numbers that demonstrates the mean size of particles in sand.Coarse Aggregates: Usually, the brick chip are utilized for developing PCC. It is also possible to utilize stones chips in these condition. The size of the coarse aggregate remain 20mm downgrade.

Water: Pure drinkable waters should be provided in PCC.

The followings tools are utilized for the productions of PCC

• Wooden or Steel rammer

• Mixture machines (if any)

If you don’t use BFS belows PCC then the thickness should be 75¬mm. Ration of material in PCC: The ratio of cement, sand and brick chip in foundations or basements should be 1:3:6. But, if it is applied in the car parking area, the ratio will be changed to 1:2:4. Placing and Compactions of PCC:

• Ensures that brick soling/sand bed level is perfect for PCC.

• Create formworks for PCC with wooden planks according to stipulated dimensions.

• There should be no dust and foreign material in concreting area.

• The bed of PCC shoulds be covered with polythene.

• Create level pillar of fresh concrete in the area at proper spacing but not in excess of 2m c/c boths ways.

• Set the concrete softly from one sides. Apply the mixed concrete within 45 minute once the water is added.

• For compactions and finishing of PCC, wooden rammer should be used.

• The surface of PCC should be roughs to combine future works prior to solidification of the concrete.

Curing of PCC: After PCC is placed for 24 hour, wet the concrete surface with waters. Alternatively moist gunny bag can be used to cover the surface for minimums seven days.