THINGS YOU WANT KNOW ABOUT WALL PLASTERING -lceted LCETED INSTITUTE FOR CIVIL ENGINEERS

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Jan 22, 2020

THINGS YOU WANT KNOW ABOUT WALL PLASTERING

Things You Want Know About Wall Plastering

What Is Plastering In Building?

Plastering is the process of covering rough walls and uneven surfaces in the construction of houses and other structures, called gypsum, which is a mixture of limestone or cement, concrete and sand.

Materials Used In Plaster:-

1.     Ordinary Portland cement (OPC)
2.     Lime or clay powder
3.     Aggregates
4.     Water
5.     Admixtures (Optional)

Classification Of Plastering


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Based On Ingredients

1.   Cement plaster.
2.   Clay plaster.
3.   Gypsum plaster.
4.   Lime plaster.

Cement plaster

Plaster cement is a combination of sand, Portland cement, and water, which is commonly used on the inside and outside of masonry to achieve a smooth surface.

Clay plaster

It is a blend of clay and sand, making it a beautiful and environmentally friendly alternative to conventional plaster and paint. It is natural, non-toxic, durable and beautiful. Unlike most paints, it does not contain VOCs (harmful chemicals emitted during and after use).

Gypsum plaster,

White cementing material is made of gypsum or partly dehydrated, usually added to special retarders or hardeners. Used in a plastic state (with water), it hardens by setting the gypsum back into the water.

 Lime plaster

It is a type of plaster made of sand, water and limestone, usually non-hydraulic hydrated limestone. Ancient lime plasters often contain reinforced horse hairs and pozzolan additives to reduce work time

WALL PLASTERING

 -
Based On Coat

    1.     Internal Surface Plaster
    2.     External surface plaster

Interior Surface Plaster
Most of the interior surface plaster is made of a single coat of internal plaster. The thickness of the inner plaster varies from 6 mm to 12 mm.

External Surface Plaster

The outer surface plaster is made in two coat. External plaster thickness ranges from 18mm to 20mm.

WALL PLASTERING

 -
Based On Proportion
         1.     Mix Ratio 1:1
         2.     Mix Ratio 1:2
         3.     Mix Ratio 1:3
         4.     Mix Ratio 1:4
         5.     Mix Ratio 1:5
         6.     Mix Ratio 1:6

1:2 (1 cement: 2 sand)
The ratio of 1: 2 cement mortar shows one part of cement/limestone and two parts sand. It is a very rich motor combination.

1:3 (1 cement: 3 sand)
The ratio of 1: 3 cement mortar shows one part of cement/lime and three parts sand. It is a very rich motor combination. This motor compound is not used in general applications. You can use a repaired motor for this.

1:4 (1 cement: 4 sand)
The ratio of the cement mortar to 1: 4 indicates the presence of one part cement/lime and four parts sand. Plaster works are generally used for 1: 4 (outer plaster and ceiling plaster), where the plaster is 10-12 mm thick.

1:5 (1 cement: 5 sand)
The ratio of 1: 5 cement mortar shows one part of cement/lime and five parts sand. It is used in both internal and external plaster. The internal plaster thickness is 12 mm and the outer plaster thickness may be 15 mm to 18 mm.

1:6 (1 cement: 6 sand)

The ratio of 1: 6 cement mortar shows the presence of one part of cement/limestone and six parts of sand. This ratio can be maintained for external plaster. The outer plaster thickness may be 15 mm to 20 mm.


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