|
Properties |
|
MOR (Modulus of Rupture) |
40-45 N/mm2 |
|
Internal bond strength(dry/wet*)
|
1.3 - 1.4 N/mm2 (* sample subjected to 3hrs boiling is dried to 12% moisture content and tested) |
|
Load
bearing capacity
|
5.4 N/mm of width (span length - 1000mm) (Graph showing comparative performance of BMCS and Asbestos Cement Corrugated Sheet (ACCS) is enclosed). |
|
Water resistance test
|
Withstands 72 hours of boiling test prescribed for BWP grade Plywood in IS:808 |
|
Permeability
|
No percolation of water observed after storing water for over 24 hours. However, considering the biological nature of the material, a protective water-proof / UV coating is recommended on the side exposed to sun/rain. |
|
Fire
resistance
|
Conforms to flammability test as per IS:5509 Indian Standard Specification for Fire Retardant plywood. |
|
Thermal conductivity
|
BMCS has low thermal conductivity compared to other roofing materials. Tests are in progress. |
|
Application |
Roofing, walling, structural |
| The main raw material for the product is bamboo, which is the fastest growing plant and occurs naturally in the forests and is also suitable for plantation even over degraded lands. For manufacturing BMCS, bamboo is to be converted into mats that are hand woven by rural/tribal people, particularly women. Thus the product is both environment and people friendly. |
COMPARISON OF LOAD BEARING STRENGTH OF BMCS & OTHER SHEETS
|
1.
|
Bamboo Mat Corrugated Sheet
|
Width - 470 mm |
|
2.
|
Asbestos Cement Corrugated Sheet
|
Width - 495 mm |