Why PCC is done?

Before starting any R.C.C

R.C.C

Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility.

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Reinforced concrete - Wikipedia

or masonry work directly on the excavated soil, PCC is done to form a levelled surface and to avoid laying concrete on soil directly so as to avoid mixing/ with soil and also to prevent soil extracting water from PCC thereby weakening it.

What are PCC used for?

Prothrombin complex concentrate (PCC), also known as factor IX complex, is a medication made up of blood clotting factors II, IX, and X. Some versions also contain factor VII. It is used to treat and prevent bleeding in hemophilia B if pure factor IX is not available.

What does PCC mean in construction?

PCC. Plain Cement Concrete. Civil Engineering, Water Resources, Cement.

Does PCC need curing?

Polymer-cement concrete should be first cured in the wet conditions for effective hydration of Portland cement and then in air-dry conditions for polymer setting. According to the literature, the often accepted curing regime of PCC covers 5 days of wet curing and then the air-dry curing until the time of testing.

Why is PCC important in construction?

The main reason of providing PCC is to provide a rigid impervious bed to RCC in the foundation before starting any RCC or masonry work directly on the excavated soil, PCC is done to form a leveled surface and to avoid laying concrete on soil directly so as to avoid mixing with soil and also to prevent soil extracting ...

Why we provide PCC in any construction | Interview Question I Practical Training

What is done after PCC?

After 24 hours of placing PCC, keep the concrete surface moist by flooding with water or by covering with moist gunny bags. Curing of PCC may be done by either pouring water with buckets or with pipes. Curing should be carried out for a minimum 14 days.

Where is PCC used in construction?

Applications of Plain Cement Concrete: PCC is mostly found in footings, grade slabs, and concrete roads. When the underlying soil is weak and flexible, brick flat soling is provided under PCC. Cement: Normally, the Portland cement is utilized as bonding material in PCC.

Is PCC waterproof?

The surface course is the layer in contact with traffic loads and is made of PCC. It provides characteristics such as friction (see Figure 3), smoothness, noise control and drainage. In addition, it serves as a waterproofing layer to the underlying base, subbase and subgrade.

What is the main difference between RCC and PCC?

The main difference between PCC and RCC is that RCC contains steel rods or reinforcement within it but PCC does not contain reinforcement within it. So, RCC can bear the maximum tensile load on it.

What is the ratio of PCC concrete?

PCC Ratio. PCC concrete mix ratio is 1:5:10, which Means 1 part of cement, 5 parts of sand, and 10 parts of aggregate. PCC in construction is used to make a level bed for footing.

Which cement is used for PCC?

Plain Cement Concrete (PCC)- Work Procedure. Plain cement concrete is the mixture of cement, fine aggregate(sand) and coarse aggregate without steel. PCC is an important component of a building which is laid on the soil surface to avoid direct contact of reinforcement of concrete with soil and water.

Which grade concrete is used for PCC?

The Grade of the PCC used is M15 grade. IN M15 Grade, The mix ratio is 1:2:4. (1 cement,2 sand , 4 aggregates). Applications: M15 grade plain concrete cement is used for levelling courses,bedding for footing, beams and columns e.tc.

Is PCC load bearing?

PCC is a mixture of cement, fine aggregate or coarse aggregate, and water without steel reinforcement. It is generally used for flooring, roads, and retaining walls but not for columns, slabs, and beams, etc because it can't carry load or tensile force.

What is a benefit of using PCC instead of FFP in this patient?

As regards safety monitoring and adverse drug reaction screening in the FFP group, the INR was high (INR > 2.5) in 86% of the patients. There was no report of hemorrhage in both groups. PCC reverses anticoagulation both effectively and safely while having the advantage of obviating the need to extra doses.

Does PCC contain heparin?

To prevent activation of these factors, most PCC contain heparin. PCC may also contain the natural coagulation inhibitors protein C and protein S. The PCC are standardised according to their factor IX content.

What is the thickness of concrete road?

Many highway agencies have tight specifications for concrete pavement thickness. Typically, a large reduction in lot payment may result if the concrete pavement thickness is 12.5 mm (0.5 in.) less than specified for as-designed pavement thicknesses in the range of 250 mm to 300 mm (9.8 in. to 11.8 in.).

What is PCC in rigid pavement?

Portland cement concrete (PCC) pavements (or rigid pavements) consist of a PCC slab that is usually supported by a granular or stabilized base, and a subbase. In some cases the PCC slab may be overlaid with a layer of asphalt concrete.

What is concrete pavement construction?

Concrete pavement which is occasionally called rigid pavement is a concrete layer that is in contact with traffics directly and it is used for different purposes and applications. The concrete used for pavements can be modified and changed in various ways as per the requirement.

What is the minimum thickness of PCC?

The PCC is mainly laid to provide a rigid impervious layer for to RCC over the excavated area before any masonry works set in. PCC minimum thickness should be 300 mm and 600mm in deep excavations. In any case it is advisable that the thickness should not exceed 1500mm.

Is PCC a code for cement?

IS: 2250 – compressive strength test for cement mortar cubes. IS: 269-2015 – specifications for 33, 43 and 53 grade OPC. IS: 455 – specifications for PSC (Portland slag cement). IS: 1489 – specifications for PPC (Portland pozzolana cement).

What is M20 grade?

M20 signifies mixture of cement, sand and aggregate which are prepared in such a manner that a cement concrete cube of size 15 cm x 15 cm x 15 cm is formed with characteristic strength (fck) of 20mpa while examining it after being cured for 28 days.

How is PCC rate calculated?

Quantity of cement = 1/13 × 1.54 m3 × 1440 kg/m3 = 170 kg, no of bag cement for 1m3 PCC 1:4:8 (m7. 5) = 170/50 = 3.4. If rate of cement = INR 300 per bag, then cost of 3.4 bags cement = 3.4 ×300 = INR 1020. Quantity of sand = 4/13 ×1.54 × 35.3147 = 16.73 cft, so 16.73 cft sand quantity required for 1m3 PCC grade m7.