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The Blocks have an extremely appealing face-brick
finish and provide a pre-pointed straight masonry.
The walls may be left exposed, plastered or finished
with cement paint. These blocks are made using
Hydraform Block-making machine with an option to
make at the site of construction itself.
The interlocking construction is suitable for both
Load bearing structures as well as framed structures
- single or even multi-storey.
EARTH QUAKE RESISTANT CONSTRUCTION
 Hydraform
interlocking block masonry can be effectively used
in Earthquake resistant constructions incorporating
necessary structural design and reinforcements.
HUDCO in consultations Dr. Arya, Seismic advisor to
Gujarat State Disaster Management Authority arrived
at suitable designs to use these blocks in Earthquake-resistant houses and buildings in Gujarat.
HUDCO & other NGOs implemented projects Hydraform machine made
with compressed earth interlocking block masonry. Vertical & Horizontal reinforcements can be effectively done for Earthquake construction. Hydraform continues to improve Earthquake construction techniques with its continuous research process to improve the construction standards to meet Earthquake construction requirements.
The genesis to the adoption of Hydraform Building System lies in Hydraform Block-Making machine and Hydraform Technology training package.
Section 2 >>>
Technical Information
[section 2]
Hydraform machine can help you make 200 - 240 blocks per hour with manpower of about 7 - 8 people.
Hydraform machine comes to you with a comprehensive technology training and support system that includes support / training on:
• Raw material Selection
• Guidance in Soil Testing
• Mix design
• Block Production
• How to get Optimum Block production output
• Block testing for strength and essential technical parameters
• Hydraform interlocking Construction technique
HYDRAFORM INTERLOCKING BLOCK SPECIFICATION
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HF 220/ Conduit |
HF150 / Brick |
|
Use |
External walls/Fencing/Load bearing
constructions |
Interior/Partition Walls/Framed
Constructions |
|
Width |
220 mm (9 ins) |
150 / 115mm (6/4.5 ins) |
|
Height |
115 mm |
115 mm |
|
Length |
120 mm to 250 mm |
120 mm to 250 mm |
|
Weight |
+ - 11 Kg (Full Block) for SCEB
+ - 9 Kg (Full Block) for Fly Ash Blocks |
4.5-5.5-7 kg approx |
By size, one HF220 is equivalent to three to three & half size of conventional fired bricks. Other sizes are also available.
Raw Material for making blocks
The blocks can be made in Hydraform machine using Fly ash - Lime - Gypsum - Cement- Sand, Fal-G or other fly Ash based tested combination OR Soil-Cement (compressed Stabilized Earth Blocks) OR Stone Dust - Cement. We can provide mix design assistance in this respect. Other options with Hydraform machine is to make
blocks using it as well.
Section
3 >>>
Technical Information
[section 3]
Mix Design
Although, different mix designs are possible depending upon the quality of raw material and strength required, the blocks can be successfully made using
the following options:
Fly ash Cement Block
• Fly ash = 35% - 60%
• Coarse sand = 35% - 70%
• Stabilizer = 5% - 15% (including lime, cement, gypsum)
Stabilized Earth Block
• Soil = 60 - 70%
• Coarse sand = 20 - 30%
• Cement = 5 - 10%
Note: The exact mix design will vary depending on the nature of fly ash & soil available and strength required.
Block Strength:
The block strength is determined by Soil / Fly Ash type, quantity of Cement used and other materials used and the extent of curing after manufacture of block.
We have obtained results as indicated below:
|
Soil - Cement Blocks |
Fal-G - C. Sand |
|
Cement Content |
Strength |
Cement Content |
Strength |
|
5% |
4 to 5 MPa |
5% |
7 to 8 MPa |
|
10% |
7 to 8 MPa |
8% |
12 to 13 MPa |
1 MPa is equal to 10 Kg / Sq. cm
Thermal Quality:
It can be up to 3 times better than conventional brick masonry.
Water Absorption:
Good quality blocks can be made from Hydraform machine to give:
For Fly Ash- Cement: Up to 10%.
For Stabilized Earth Block: Up to 12%.
Block Finish:
Block finish is very good and compares even better than face brick finish. It provides option to keep the wall with or without plaster. In case of without plaster, the wall could be given a groove pointing / varnish / sili-coat or tereline coat.
Section
4 >>>
Technical Information
[section 4]
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