Woven bristle coir soil erosion control blanket
BioD-Mat® 70 blanket is completely biodegradable and does not contain any synthetic materials to harm wildlife.
BioD-Mat® 70 blanket is woven from machine-spun bristle coir twines with a unit weight of 780 g/m2. This semi-permanent 100% biodegradable, strong and durable bristle coir woven blankets provide higher resistance upon installation while supporting growth and development of vegetation. BioD-Mat® 70 blanket has field functional longevity of 4-6 years. This blanket allows designers and specifiers to go beyond the design limits of other types of organic erosion control blankets. This strong, durable, and biodegradable blankets play an important role in soil bioengineering applocations. The open weave in the BioD-Mat® 70 blanket allows reseeding before and after installation. The 0.5 in x 0.5 in opening in the blanket allows planting plugs through the blanket without cutting the blanket. The 9.84 ft. (3m) and 13.1 ft. (4m) wide blankets have one seam in the mat.
Recommendation for choosing a woven coir blanket.
When selecting and specifying woven coir mats, designers should not only consider the unit weight, but also the wet tensile strengths, coir type, open area as well as machine direction and cross direction twine counts.
Resources
Print specification of BioD-Mat® 70
Specifications
| Property | Test Method | BioD-Mat® 70 |
| Weight | ASTM D 3776 | 23 oz/SY (780 g/sq.m) |
| Dry tensile strength | ||
| Machine direction | ASTM D 4595 | 1740 lbs./ft (25.4 kN/m) |
| Cross direction | ASTM D 4595 | 1176 lbs./ft (17.2 kN/m) |
| Wet tensile strength | ||
| Machine direction | ASTM D 4595 | 1488 lbs./ft (21.7 kN/m) |
| Cross direction | ASTM D 4595 | 1032 lbs./ft (15.1 kN/m) |
| Elongation at failure Wet | ||
| Machine direction | ASTM D 4595 | 38% |
| Cross direction | ASTM D 4595 | 25% |
| Open area | Calculated | 48% |
| Thickness | ASTM D 1777 | 0.35 in (9 mm) |
| Minimum Twine Count | ||
| MD x CD (per foot) | 27 x 18 | |
| Recommended slope | > 1:1 | |
| Recommended flow | 12 fps (3.7 m/s) | |
| Recommended shear stress | 4.5 lbs./sq. ft. (215 N/sq.m) | |
| Fiber type in twine | Brown bristle coir fiber | |
Applications
- Wetland restoration
- Streambank restoration
- Slopes stabilizations in slopes > 1:1
- High flow channels
Advantages
- 100% biodegradable.
- Economical compared to synthetic mats.
- Open weave allows re-seeding, when necessary.
- Open weave allows planting through the mat without cutting the mat.
- Easy to install and to walk on the mat.
- Wildlife will not feed on the mats.
- Higher resistance to UV light compared to synthetic mats.
- Coir twines move independently, creating no threat to wildlife movement.
- Support establishing vegetation better than synthetic mats.
- Woven from machine twisted bristle coir fiber twine; strong and durable.
- Hold moisture for seed germination and seedling growth.
- Higher tensile strength and provide initial support in bioengineering applications.
- Last 4 – 6 years and provide aesthetically pleasing applications.
- Made from freshwater cured bristle coir and dark brown in color.
