Plastering and how to calculate cement for plastering, which cement is best for plastering, Hi guys is this article we know about plastering and how to calculate cement for plastering and which cement is best for plastering.
We will discuss about plastering and their several calculation like cement for plastering ,gypsum plastering and many more.
Plastering is thin layer of material used to cover wall and make it surface smooth and plastering is used for is building materials used for protection and decorative coating of wall and ceiling and their moulding and casting decorative element like internal wall external wall and ceiling and RCC surfaces.
In plastering design we should provide thin layer of cement mortar in exterior and interior wall of building. What is meaning of plaster ?
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in English” plaster means of material used for interior building. Plastering and how to calculate cement for plastering
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What is plastering and plastering design
Plastering design is used for home decorative of buildings for their ceiling, interior wall and exterior wall,and rcc surface. so home decorative is an art and it can be reaped in all forms with all kinds of material. Plastering and plastering design used several product for interior house design like ceramics ,bricks ,stone,cement , plaster of Paris (pop),gypsum plaster , vedic plaster and lime plaster.
The plaster in also one of easiest material to prepare and it can be used in different areas of your home like kitchen, living room, bathroom and to cover ceiling.Plastering and how to calculate cement for plastering
Types of plaster
We have different types of plaster cast. Mainly it is categorised into 4 types of plaster according to their binding material. And binding material is adhesive material which make strong bond between plaster layer and wall surfaces.Plastering and how to calculate cement for plastering
1) cement plaster
2) gypsum plaster
3) clay plaster
4) lime plaster
5) POP plaster
Cement plaster
it is a type of binding material in which cement is used as Binder and it has water resistance but not waterproof it is also weather resistance for wall plaster. cement plaster is mix of cement, sand and water in quite proportion and properly used for wall plastering.
Cement plaster is used widely for plastering of wall and interior and exterior designing.Plastering and how to calculate cement for plastering
Gypsum plaster
in the type of binding material in which gypsum paste is used as Binder material for plastering of wall. gypsum plaster is hydrate of calcium sulphate. calcium sulphate (gypsum plaster) is extra ordinary hard and strong need for designing of interior wall make it very fine smooth and fire proof but it has major drawbacks is that it is not water resistance binding material.
POP ( plaster of Paris )
pop is type of binding material in which plaster of paris is act as binding properties commonly known as POP. This type of plastering is widely used today and very popular in construction work. Pop is dehydrate of calcium sulphate as Binder material. plastering of wall plastering with POP make very fine and smooth surface of wall
Lime plaster
in this type of plaster lime act as Binder material for plastering of wall.it consist of sand water and lime. Mortar lime plaster is prepared by mixing sand lime and water in adequate proportion to improve its strength.
Clay or mud plaster
it is made of clay, fine aggregate and fiber. The use of mudd plaster maintain the breathing quality of the wall made of natural material and enhancing the thermal comfort by keeping heat proof. This type of plaster is very much popular in rural areas.
Types of plaster according to their application
According to their application plastering have several types
1) external plastering
2) internal plastering
3) ceiling plastering
4) RCC surface plastering
Coating of plastic material on the exterior of wall is known as exterior plastering and it provide exterior finishing to the work and portland cement sand mixed with water to form workable plaster and several admixture may be added for various purpose to increase its workability.
Coating of plastering material on the interior face of wall is known as interior plastering. and also cement mortar is coated on the roof ceiling that is known as ceiling plaster and some RCC surface of column and beam they have provided plastering coat that is known as rcc surface plastering
Cement sand required for 10 sq. metre plastering
◆ type of plastering
1) external brick wall plastering
2) internal brick wall plastering
3) ceiling or concrete plastering
1) external plastering :- rough and exterior surface of brick wall that is known as external brick wall it needs to improve its surface smoothness by plastering work is known as external plastering. Mix ratio for external brick wall plastering is about 1:4 in which 1 part is cement and 4 part is sand and thickness of external brick wall plastering is about consists of two coat first Coat of 12 mm and second coat of 8 mm that is aggregate thickness of external brick wall plastering is 20 mm.
And external plastering thickness for external wall is ranging between 15 to 20 mm according to condition.
Quantity of cement required for 10 sq meter plastering
■ solve :-
Area of plastering work = 10 m2
Thickness of plastering = 20 mm
You should convert millimetre into meter by dividing with 1000
Thickness = 20/1000 = 0.02 m
Volume of plastering = 10m2× 0.02 m
Volume of plastering work =0. 2 m3
In plastering process some amount of cement mortar quantity get wastage we consider about 20% of mortar wastage
20% of 0.2 m3 = 0.04 m3
Total volume of mortar needed for external brick wall plaster = 0.2m3+0.04m3 = 0.24 m3
Now we have to calculate dry volume of cement mortar for calculating this we should multiply with cofactor 1.33 in wet volume of cement mortar
Dry volume = 1.33 × 0.24 m3 = 0.3192 m3
Now mix ratio for external brick wall plastering is about 1:4
Total proportion = 1+ 4 =5
Part of cement = 1/5
Part of sand = 4/5
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Quantity of cement required for external brick wall plastering
Weight of cement = 1/5× Volume× density
Part of cement = 1/5
Dry volume of mortar = 0.3192 m3
Density of cement = 1440 kg/m3
Weight = 1/5 × 0.3192 m3× 1440m3/kg
Weight of cement = 91.9296 kg
1 bag cement = 50 kg
Number of bags of cement = 91.9296/50
Number of bags of cement = 1.838
Hence cement for plaster is 1.838 number of bags of cement required for 10 sqm of external brick wall plastering
Quantity of sand required for 10 sqm external brick wall plastering
1 m3 = 35.32 cuft
Part of sand = 4/5
Mortar quantity = 0.3192 m3
We need to convert mortar quantity in cubic metre into cubic feet so this we should multiply with 35.32
Volume of sand = 4/5×0.3192×35.32 cuft
Volume of sand = 9.019 cuft
9.019 cubic feet of sand is required for 10 sqm of external brick wall plastering
2) Internal plastering :- plain surface of brick wall that is known as internal plastering of brick wall it needs to improve its surface smoothness by plastering work. Mix ratio that is internal plastering ratio for internal brick wall plastering is about 1:6 or 1:5 in which 1 part is cement and 6 part is sand and internal plastering ratio for brick wall plastering is about consists of one coat of 12 mm
So we have
Internal plastering thickness = 12mm
Internal plastering ratio = 1:6 or 1:5
Quantity of cement required for 10 sqm plastering
■ solve :- cement for plastering
Area of plastering work = 10 m2
Thickness of plastering = 12 mm
You should convert millimetre into meter by dividing with 1000
Thickness = 12/1000 = 0.012 m
Volume of plastering = 10m2× 0.012 m
Volume of plastering work = 0.12 m3
In plastering process some amount of cement mortar quantity get wastage we consider about 20% of mortar wastage
20% of 0.12 m3 = 0.024 m3
Total volume of mortar needed for internal brick wall plaster = 0.12m3+0.024m3 =0. 144 m3
Now we have to calculate dry volume of cement mortar for calculating this we should multiply with cofactor 1.33 in wet volume of cement mortar
Dry volume = 1.33 × 0.144 m3 = 0.19152 m3
Now mix ratio for internal brick wall plastering is about 1:6
Total proportion = 1+ 6 =7
Part of cement = 1/7
Part of sand = 6/7
Quantity of cement required for internal brick wall plastering
Weight of cement = 1/7× Volume× density
Part of cement = 1/7
Dry volume of mortar =0. 19152 m3
Density of cement = 1440 kg/m3
Weight = 1/7 × 0.19152 m3× 1440m3/kg
Weight of cement = 39.3984 kg
1 bag cement = 50 kg
Number of bags of cement = 39.3884/50
Number of bags of cement = 0.7879
Hence cement for plaster is 0.7879 number of bags of cement required for 10 sqm of internal brick wall plastering
Quantity of sand required for 10 sqm internal brick wall plastering
1 m3 = 35.32 cuft
Part of sand = 6/7
Mortar quantity =0. 19152 m3
We need to convert mortar quantity in cubic metre into cubic feet so this we should multiply with 35.32
Volume of sand = 6/7×0.19152×35.32 cuft
Volume of sand = 5.798 cuft
5.798 cubic feet of sand is required for 10 sqm of internal brick wall plastering
3) Ceiling or concrete wall plastering :- rough surface of ceiling that is known as concrete wall it needs to improve its surface smoothness by plastering work. Mix ratio for ceiling plastering is about 1:3 in which 1 part is cement and 3 part is sand and thickness of ceiling plastering is about consists of one coat of 6 mm
Quantity of cement required for 10 sqm plastering
■ solve :-
Area of plastering work = 10 m2
Thickness of plastering = 6 mm
You should convert millimetre into meter by dividing with 1000
Thickness = 6/1000 = 0.006m
Volume of plastering = 10m2× 0.006 m
Volume of plastering work = 0.06m3
In plastering process some amount of cement mortar quantity get wastage we consider about 20% of mortar wastage
20% of 0.06m3 = 0.012 m3
Total volume of mortar needed for ceiling plaster = 0.06m3+0.012m3 = 0.072 m3
Now we have to calculate dry volume of cement mortar for calculating this we should multiply with cofactor 1.33 in wet volume of cement mortar
Dry volume = 1.33 × 0.072 m3 = 0.09576 m3
Now mix ratio for ceiling plastering is about 1:3
Total proportion = 1+ 3 =4
Part of cement = 1/4
Part of sand = 3/4
Quantity of cement required for ceiling plastering
Weight of cement = 1/4× Volume× density
Part of cement = 1/4
Dry volume of mortar = 0.09576 m3
Density of cement = 1440 kg/m3
Weight = 1/4 × 0.09576 m3× 1440m3/kg
Weight of cement = 34.4736 kg
1 bag cement = 50 kg
Number of bags of cement = 34.4736/50
Number of bags of cement = 0.689
Hence cement for plaster is 0.689 number of bags of cement required for 10 sqm of ceiling plastering
Quantity of sand required for 10 sqm ceiling plastering
1 m3 = 35.32 cuft
Part of sand = 3/4
Mortar quantity = 0.09576 m3
We need to convert mortar quantity in cubic metre into cubic feet so this we should multiply with 35.32
Volume of sand = 3/4×0.09576×35.32 cuft
Volume of sand = 2.537 cuft
2.537 cubic feet of sand is required for 10 sqm of external brick wall plastering
Machine for cement plastering
There is a experimental process is applied in modern technology in construction field that reduce the time of work and use of Manpower and increase the efficiency of Manpower. For this there is a several types of cement plastering machine available in India at comfortable price. Cement plastering machine is new compact, plaster spraying unit for all texture ,plaster, cement plaster ,putty, gypsum plaster pop of material which has size of grain 3 mm and easy to clean flexible and weather proof and resistant to ageing. Some people ask what is the price of wall plaster machine. Wall plaster machine price which are available in market ranging between thousand to lakh according to their capacity. Such as plastering gun, Piston air compressor ,cement mortar sprayer machine, gypsum plastering machine, plaster spray machine etc.
Which cement is best for plastering
Every people want to know when they start to build his house which cement is best for plastering. For knowing best cement for plastering we have to discuss about some properties of cement. There are three kinds of cement available in market OPC, PPC and PSC cement. OPC cement ordinary Portland cement is come in the 3 grade 33 ,43 and 53. OPC 33 grade is old cement their manufacturing is stop today and not available in market.
1) OPC:- ordinary Portland cement that is also known as in short form OPC .OPC is available in market in 3 grade 33, 43 and 53. But of OPC 43 and 53 is best cement for all types of structural work footing beam slab and plastering work today and it has long lasting and life. But the most best cement is OPC 43 used for plastering work .Although OPC-53 is good but sometimes it’s causes cracks building and shrinkage of plastering but it has high strength and long lasting and life that’s why OPC-53 also used for high rise building, dams and Bridge for plastering work.
2) PSC:- it is known as Portland slag cement basically used in coastal areas of building for plastering work to prevent from salty water and most harmful chemical agents that is present in coastal areas due to oceans hard water.
3) PPC:- it is Portland pozzolana cement made of some additive generally it is used as plaster work footing slab beam and column in high rise building structure bridge and dams, because bridge and dams retaining walls always in make contact with running water and standing water and there is harmful chemical agents like alkalis, acids ,Salt present in water and try to react with cement brick wall. To prevent from corrosion and chemical reaction between retaining wall and water soluble harmful chemicals PPC is best plastering material for high rise structure bridge
■ Conclusions:- now go ahead and select the which is the best cement for house construction? And see into local market there is a different brand of cement UltraTech ,ACC. According to my point of view OPC 43 grade of cement is good for plastering work.