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Fiber Cement Board 18mm x 4 x 8 SCG Thailand
Fiber
Cement Board is a combination of cement and reinforcing fibers
formed into 3 by 5 feet (91 by 152 cm) sheets, 1⁄4 to 1⁄2
inch (6.4 to 12.7 mm) thick that are typically used as a tile backing board.
... Cement board adds impact resistance and strength to the wall surface
as compared to water resistant gypsum boards.
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TECHNICAL
& PHYSICAL SPECIFICATIONS OF FIBER CEMENT BOARDS |
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1.Physical Properties |
Result |
Standards |
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Flextural Strength |
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ASTM C1185 |
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a. Flextural Strength (Along the
Fibre) |
14.0 N / mm2 |
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b. Flextural Strength (Across the
Fibre) |
8.1 N / mm2 |
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Modulus of Elasticity |
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ASTM C 1185 |
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a. Modulus of Elasticity (Along
the Fibre) |
8726.3 N / mm2 |
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b. Modulus of Elasticity (Across
the Fibre |
6557.2 N / mm2 |
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Adhesion/Lamina (Bond) Strength, average |
15 N / mm2 |
ASTM D 1037 |
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Screw Withdrawl Strength |
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ASTM D 1037 |
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a. Perpendiculor to the Surfoce (Dry
Condition |
1243.2 N |
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b . Porollel to the Surfoce (Dry Condition) |
791.2 N |
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Compressive Strength. overoge |
2.6 N / mm2 |
ASTM D 1037 |
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Apporent Density |
1355.8 kg/m3 |
ASTM C 1185 |
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ll. Moisture Resisfonce Properlies |
Result |
Standards |
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Moisture Content (at EMC *) |
6-8% |
ASTM C 1185 |
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lmpact Strength |
15600 N/mm2 |
ASTM C 1185 |
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Thermal Conductivity |
0.14 w/mk |
ASTM C 518 |
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Moisture Movement |
6% - 8% |
ASTM C 1185 |
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a. Length |
-0.0002 |
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b. Width |
-0.0002 |
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Woter Absorption, average |
0.313 |
ASTM C 1185 |
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Water Tightness |
No water droplets |
ASTM C 1185 |
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lll. Durability |
Result |
Standards |
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Woter lmpermeobility |
No drops after 24 hrs |
ISO:8336 (Part E) |
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Frost Resistonce (Freeze/Thaw Tests) |
Passes in 25 cycles |
ISO:8336 (Part E) |
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Warm Water |
Passes in 25 cycles |
ISO:8336 (Part E) |
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Soak Dry |
Passes in 25 cycles |
ISO:8336 (Part E) |
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Heat Rain |
Passes in 25 cycles |
ISO:8336 (Part E) |
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lV Fire Resistance Properties |
Result |
Standards |
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a. Surface burning Characterstics |
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ASTM E 84 |
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Time to Ignition (in sec) |
No Ignition |
"0" - is the best result |
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Flame Spread Index |
0 |
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Smoke Developed Index |
0 |
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b. Resistance to Fire |
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BS: 476 |
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Combustibility |
Non - Combustible |
Part 4 |
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Ignitability |
Class "P" - not easily ignited |
Part 5 |
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Fire Propagation Index |
<3 |
Part 6 (Limit < 12) |
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Surface Spread of Flame |
Class - 1 |
Part 7 (Class 1-4 = excelent) |
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Specific Optical Density of Smoke |
<5 |
ASTM E 662 |
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UK Building Regulations |
Class "0" |
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Note: *ASTM - American Standard; **BS - British Standard, ***ISO
- International Standards Organization |
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* Test Condition Temp 23 +/- 2 degree C and Relative Humidity -
50 +/- 5% to 65 +/- 5% |
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* EMC - Equilibrium
Moisture Condition - i.e Temp 23 +/- 2 Degree C and relative Humidity - 70
+/- 15 |
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