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Government Approved Machinery Technology
AAC Blocks

Introduction to AAC Blocks

(Autoclaved Aerated Concrete)
AAC (Autoclaved Aerated Concrete), is also known as autoclaved cellular concrete (ACC), these are Thermalite Blocks developed in the mid-1920s in Sweden. These are light-weight and pre-cast building materials that simultaneously provide structure, insulation, and fire and mold resistance. One of the major advantage of AAC over other cementitious construction materials is its lower impact on environment. It has no efflorescence emission (white salt appearance) at large.

It is highly thermal insulating product used for both internal and external construction. It is easy and quick to install since the material can be routed, sanded, and cut to size on site using standard carbon steel band saws, hand saws, and drills. Major application of AAC products include light weight partition walls, protection of steel structure and lintels. The common sizes are (LxWxH) 600mm x 200mm x 200mm; 600mm x 150mm x 200mm; 600mm x 100mm x 200mm etc.

Regular cement mortar can be used, 98% of the buildings erected with AAC materials use thin bed mortar, which comes to deployment in a thickness of ? inch. AAC material can be coated with a tiles, stones compound or plaster against the elements. Siding materials such as brick or vinyl siding can also be used to cover the outside of AAC materials.

We are one of the largest manufacturers and exporters of AAC blocks in India. Based in Faridabad, we manufacture high quality AAC blocks using the AAC material that can be coated with tiles, stones compound or plaster against the element.
 
Details of Merits are being Provided here under-
1. High Thermal Insulation-
High Thermal Insulation
. These blocks have appx. 1/3 density that of Conventional Building Blocks.
. It has very low specific conductivity. This  makes heating or cooling (Air Conditioning) very efficient.
. Generates regular saving on energy and global warming.
 
2.Light Weight -
Light Weight
With an approximate density of (450-550)Kg/M3, which is only one third of the weight of equivalent hollow concrete blocks and half of the weight of light weight aggregate block, it reduces the loads on the concrete structure and foundation of the building substantially. This saves construction time and the total materials required for the construction of the entire buildings (saving 33% of dead load when using A.A.C Thermalite for the hourdi slabs and walls).
 
3. Superior Fire Resistance-
Superior Fire Resistance
A 10 cm thick AAC Thermalite block provides a fire resistance value of 4 hours and 15 cm block 6 hours in accordance with BS-5628-3- approximately twice more protection than the normal concrete. Therefore, Thermalite is particularly suited for fire walls and fire protection of structural steel.
 
4. Compressive Strength-
Compressive Strength
The block has an average compressive strength of (28-35) kg/cm2 which is superior to most types of light weight blocks, 25% more stronger than other products of the same density.
 
5.Workability-
Workability
It can be sawed, nailed and drilled easier than wood, by suitable tools available for this purpose. It results in less wastage and keep the site clean.
 
6.Economical, Easier & Quicker to install-
Economical, Easier & Quicker to install
Construction time is substantially reduced while Thermalite blocks are used. Thermalite blocks are large and lighter than conventional blocks and hence can be installed at a quicker rate. Blocks are laid flush utilizing thin joint mortar hence reducing mortar and plastering cost and eliminating thermal bridging.
 
7.Sound Insulation and absorption-
Sound Insulation and absorption
The cellular structure of AAC Blocks provides superior sound absorption and insulation, both of which depend on density and porosity. The air porosity of the material will have significant effect on the performance of the wall. The aerated structure of Thermalite consists of millions of very small non-interconnected air cells giving very low air porosity. This gives a high resistance to the passage of air borne sound relative to density.
 
8.Environmentally Friendly-
Environmental Friendly
Non-existence of toxic substances, less consumption of fuel, electricity and nominal wastage during production, saving of electricity in large in Thermalite building - all these advantages of Thermalite reduces the environment pollution. In fact, wherever Thermalite is used, energy is saved.
 
9.High Resistance to Air and Water Penetration-
High Resistance to Air and Water Penetration
The AAC Thermalite products, because of their cellular and discontinuous microstructure, are superior to the normal concrete in resistance of water penetrability & thus the external surface of AAC Thermalite walls provides superior resistance to air and moisture penetration than the traditional masonry products. Thermalite is manufactured from non-biodegradable materials, which does not rot nor attract mould, keeping interiors clean and durable.
 
10.Durability & Dimensional Stability-
Durability & Dimensional Stability
The AAC products have been in use for nearly 70 years. Since then, the production has spread to most parts of the world and the material has proved its durability under extremely different climatic and chemical conditions. The linear expansion coefficient of Thermalite is approximately 0.02%
 
Project at a Glance
Capacity 50000 CBM (in shape of blocks of 0.75 density and size 600x200x200) Equivalent to 2.5 crores ordinary brick of density 1.9 size 230x110x75
 
S.No Description Estimated Cost (Rupees in Crores)
1. Land  3 acres 1.50
2.0. Plant Equipments & Machines  
2.1. Imported (Details Annex-I) 4.00
2.2. Indian (Details Annex-2) 2.00
2.3. Building Civil Work 2.00
2.4. Delivery Vehicles .50
2.5. Loaders & Forklift .35
3. Working Capital 5000 CBM/Month @Rs1500/Per CBM 0.75
4. Salary & Wages/Month 0.05
5. Annual Sales 45000 CBM per year @Rs3200/CBM 14.40
6. Annual Variable cost for 45000+2% wastage 45900 CBM x1500/CBM 6.9
7. Annual Salary Rs.0.05 x 12 0.60
8. Annual Maintenance Cost 0.90
9. Transportation .80
10. Miscellaneous .50
  Gross Profit before depreciation 6.00
  Power- 295.5KW  
 
Direct Labour & Raw Material Cost/CBM(Vary from Place to Place)
By Flyash Route Rs By Sand Route Rs
500 Kg. Flyash
100 Kg Lime (CaO)
80Kg x 6 Cement
75 Gypsum
Aluminium Powder
Energy (25 Units x6)
Labour
800.00
250.00
480.00
150.00
50.00
150.00
50.00
500 Kg. Sand
100 Kg Lime (CaO)
80Kg x 6 Cement
75 Gypsum
Aluminium Powder
Energy (25 Units x6)
Labour
175.00
250.00
480.00
150.00
50.00
150.00
50.00
 
1930.00
 
1305.00
Extra- Cost of Interest & Depreciation + Maintenance Charges
 
Raw Material Process for AAC Blocks Manufacturing
F101
  Name,Type, Specification:
Jaw Crusher PE200x300
AAC Blocks Raw Material Process
  Technical specifications:
Feed Size- 165mm
Adjustment Scope-20-70mm
Main Shaft Rotary Speed-265
Capacity-2-8m3/h
Motor Power-11kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,60,000.00
  Total: 1,60,000.00
F102
  Name,Type, Specification:
Bucket Elevator TH250x11m
  Technical specifications:
Max Size-35mm
Running Speed-1.4m/s
Pitchof Buckets-512mm
Capacity-16 m3
Motor Power-5.5kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 385/m
  Total: 3,38,480.00
F103
  Name,Type, Specification:
Lime Silo
  Technical specifications:
V=20m3
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 3,06,000.00
  Total: 3,06,000.00
F104
  Name,Type, Specification:
GZ3 GZ3 Vibrating Feeder
  Technical specifications:
Feed Size- = =50mm
DulbleVibration Amplitude-1.75mm
Motor Power-0.15kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 55,360.00
  Total: 55,360.00  
F105
  Name,Type, Specification:
Ball Mill(dry) 1.2x4.5m
  Technical specifications:
Rotational Speed-32r/min
Feed Size- = =25mm
Capacity- 1.6-5.8m3/h
Motor Power- 45kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 12,06,160.00
  Total: 12,06,160.00  
F106
  Name,Type, Specification:
Bucket Elevator TH250x19m
  Technical specifications:
Feed Size- 35mm
Running Speed- 1.4m/s
Pitch of Bucket- 512mm
Capacity- 16 m3
Motor Power- 7.5kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 385/m  
  Total: 5,84,640.00  
F107
  Name,Type, Specification:
Lime Bin Cement Bin
  Technical specifications:
2.5x4.7m
V=20 m3
  Unit: Set
  Quantity: 2
 
  Unit Price (In Indian Rupees): 4,50,000.00
  Total: 9,00,000.00  
Dosing and Mixing System
F201
  Name,Type, Specification:
Spiral Feeder LX250x4.5
  Technical specifications:
Turning Speed- 60r/min
Capacity-10-40T/h
Power- 4kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,47,680.00
  Total: 1,47,680.00  
F202
  Name,Type, Specification:
Spiral Feeder LX250x4.0
  Technical specifications:
Turning Speed- 60r/min
Capacity-10-40t/h
Motor Power-4kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,35,360.00
  Total: 1,35,360.00  
F203
  Name,Type, Specification:
Cement, Lime Measuring Tank
  Technical specifications:
Tank Diameter- 1200mm
Tank Height- 1500mm
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,96,960.00
  Total: 1,96,960.00  
F204
  Name,Type, Specification:
Slurry Measure Tank
  Technical specifications:
Tank Diameter- 1500mm
Tank Height- 1700mm
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 2,33,840.00
  Total: 2,33,840.00  
F205
  Name,Type, Specification:
Mixer System
  Technical specifications:
Type of Reduction- BLD4--43
Power- 7.5 kw3
  Unit: Set
  Quantity: 3
 
  Unit Price (In Indian Rupees): 1,16,880.00
  Total: 3,50,640.00  
 
F206
  Name,Type, Specification:
Slurry Pump 100YZ100-30A
  Technical specifications:
Depth-1.8m
Flow-75 m3
Lift-30m
Motor Power-18.5 kw3
  Unit: Set
  Quantity: 3
 
  Unit Price (In Indian Rupees): 1,84,640.00
  Total: 5,53,920.00  
 
F207
  Name,Type, Specification:
Pneumatic Valve
  Technical specifications:
80
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 43,040.00
  Total: 43,040.00  
 
F208
  Name,Type, Specification:
Air Compressor
  Technical specifications:
Power-5.5kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 61,520.00
  Total: 61,520.00  
 
F209
  Name,Type, Specification:
Dry Powder Weigher
 
  Technical specifications:
1500kg
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 73,840.00
  Total: 73,840.00  
 
F210
  Name,Type, Specification:
Slurry Weigher
 
  Technical specifications:
4000kg
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,10,720.00
  Total: 1,10,720.00  
 
F211
  Name,Type, Specification:
Rolling Screen SG1015
  Technical specifications:
Diameter-1000mm
Height-1500mm
Mesh Size-8mm
Power-4kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 73,840.00
  Total: 73,840.00  
 
F212
  Name,Type, Specification:
PLC Plc measuring Control system
  Technical specifications:
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 1,84,640.00
  Total: 1,84,640.00  
 
F213
  Name,Type, Specification:
Aluminum mixer tank V=0.25m3
  Technical specifications:
Power-0.25kw
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 30,800.00
  Total: 30,800.00  
 
Pouring and Hardening & Cutting System
 
F301
  Name,Type, Specification:
Mixing Pouring JG
  Technical specifications:
Mixing Area V=3.2 m3
Power-15kw
  Unit: Set
  Quantity: 1
 
  Unit Price (In Indian Rupees): 4,30,800.00
  Total: 4,30,800.00  
 
F302
  Name,Type, Specification:
Mould V=3.024 4.21.20.6
  Technical specifications:
  Unit:
  Quantity: 12
 
  Unit Price (In Indian Rupees): 1,10,800.00
  Total: 13,29,600.00  
 
F303
  Name,Type, Specification:
Bottom Surface Plate
  Technical specifications:
Size 4.17x1.5m
  Unit:
  Quantity: 48
 
  Unit Price (In Indian Rupees): 71,360.00
  Total: 34,25,280.00  
 
F304
  Name,Type, Specification:
Hardening Car
  Technical specifications:
Bearing Capacity- 5t
Size 3.8x1.4x0.23m
  Unit:
  Quantity: 24
 
  Unit Price (In Indian Rupees): 59,040
  Total: 14,16,960.00  
 
F305
  Name,Type, Specification:
Ferry Car
  Technical specifications:
Power 7.5kw
Size 4.22.31.5
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 4,30,800.00
  Total: 4,30,800.00  
 
F306
  Name,Type, Specification:
4 Lifting
  Technical specifications:
Count 4
  Unit:
  Quantity: 3
 
  Unit Price (In Indian Rupees): 59,040.00
  Total: 1,77,120.00  
   
F307
  Name,Type, Specification:
Cutting Machine JQ4.0
  Technical specifications:
Cutting Length- 4000mm
Cutting Height- 1200mm
Cutting Cycle- 6
Cut Surface-6
Precision1.5-2mm
Power-33kw
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 35,69,200.00
  Total: 35,69,200.00  
 
F308
  Name,Type, Specification:
Dragger
  Technical specifications:
Tension- 50KN
Diamater- 17mm
Power-5.5 kw
Speed-8-15min
  Unit:
  Quantity: 3
 
  Unit Price (In Indian Rupees): 1,10,800.00
  Total: 3,32,400.00  
 
F309
  Name,Type, Specification:
Piller
  Technical specifications:
Diameter- 60mm
Height-650mm
  Unit:
  Quantity: 80
 
  Unit Price (In Indian Rupees): 1,900.00
  Total: 1,52,000.00  
 
Pressure Vessel, Crane
 
F401
  Name,Type, Specification:
5+5t Crane,Double Speed,Double Hook
  Technical specifications:
Loader-5t
Motor- 11.5kw
  Unit:
  Quantity: 2
 
  Unit Price (In Indian Rupees): 4,30,800.00
  Total: 8,61,600.00  
 
F402
  Name,Type, Specification:
5T Crane,Double Speed,Single Hook 5T
  Technical specifications:
Loader-5t
Power-7.5kw
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 8,00,000.00
  Total: 8,00,000.00  
 
F403
  Name,Type, Specification:
Autoclave
  Technical specifications:
Diameter-2m
Length-21m
Compression Strength-13kg
  Unit:
  Quantity: 3
 
  Unit Price (In Indian Rupees): 22,00,000.00
  Total: 66,00,000.00  
 
F404
  Name,Type, Specification:
4T Boiler
  Technical specifications:
Quantity of Steam- 4t
Power-18kw
  Unit:
  Quantity: 1
 
  Unit Price (In Indian Rupees): 28,30,800.00
  Total: 28,30,800.00  
 
F405
  Name,Type, Specification:
Water Softening System 6000 Ltr/Hr.
 
  Technical specifications:
Power 7.5kw Size 4.22.31.5
  Unit:
  Quantity:  
  Unit Price (In Indian Rupees): 10,00,000.00
  Total: 10,00,000.00  
 
Local Procurement & Site Fabrication
  Draught Fan
Dirt Catcher on the Top Roof
NO12 Rail
NO.24 Rail
Lime Block Chute
Cold Water Tank 20,000Lit.
Air Hose and support of the Pipeline
Cross the Autoclave
Electrical l System
Transformer 400
Library Equipments
Civil Engineering Cost
Loader
Lime Bin Vol. 20m3
Cement Bin
Pole Support
St Pipeline
Water Pipeline
1
1
1
500
200
1
1
2

1


1
1
1
Appx.


Appx.
Appx.
6,00,000.00
15,80,000.00
8,00,000.00
50,000.00
1,75,000.00
5,00,000.00
2,20,000.00
7,50,000.00
4,00,000.00
2,75,000.00
1,80,00,000.00
25,00,000.00
3,00,000.00
3,00,000.00
2,00,000.00
6,50,000.00
2,75,000.00
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flyash bricks, flyash tiles, flyash blocks, flyash pavements, interlocking pavers, clay bricks, cement bricks, cement blocks
About Naldehra Building Centre

Office Address : 1370, HIG Flats, Housing Board Colony, Sector-29, Faridabad-121008 India
Ph: +91-129-4048913-14 Fax: +91-129-4048912 Mobile: 93113 30025
Contact Person : Mr. Ajay Singh, President

Email: nbcbricks@gmail.com

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