200m/piece, Diameter 0.8 - 1.3m,Thickness 0.1m.The core boards are made of mixture from PP and PE
1.When a structure or embankment is constructed on a site that is underlain by soft wet soils, the load on the soft soil is initially partially supported by the incompressible water in the soil pores. Over time, the excess pore water pressure dissipates as the water slowly drains out from under the load. As this occurs, the load is transferred to the soil, the soil consolidates and settlement occurs. This process could take years to occur and result in damage to the structure. One solution is to compress the soil prior to construction by placing a temporary fill load on the site. The time required for this preload to achieve the required compression can be shortened by installing wick drains/prefabricated vertical drains. The drains shorten the pore water drainage path thereby permitting the consolidation to occur in weeks instead of years. 2.The SPB-A/B/C/D prefabricated vertical drains is the new material of reinforcement of ultra-soft ground and soft soil. Reinforcement of soft soil of it’s mechanism, design, construction equipment is the same with sand wick. 3.Our factory is specialized in producing Prefabricated Vertical Drains. Our products are identified in quality by the national testing agencies for professional research. Various technical indicators have reached the design requirements, products are strictly in accordance with the process and industry standards JTJ/T257-96 in producing and self-test to ensure high quality products. Welcome to the new and old customers to come here ! Wick Drain Sample Specifications Sample specifications must be tailored to site specific conditions and design intent. |
item | Test performance | unit | model | remark | ||||
SPB-A | SPB-B | SPB-C | SPB-D |
| ||||
Plastic drain board | Section measurement | width | mm | 100 ± 2 | 100 ± 2 | 100 ± 2 | 100 ± 2 |
|
thickness | mm | ≥ 3.5 | ≥ 4.0 | ≥ 4.5 | ≥ 5.5 |
| ||
Vertical tonnage | cm3/s | ≥ 15 | ≥ 25 | ≥ 40 | ≥ 60 | 350kPa | ||
tensile strength | kN/ 10cm | > 1.0 | > 1.3 | > 1.5 | > 1.5 | kN/ 10cm | ||
extension rate | % | < 10 | < 10 | < 10 | < 10 | kN/ 10cm | ||
filtration membrane | Seepage coefficient | cm³/s | ≥ 5x10-4 | ≥ 5x10-4 | ≥ 5x10-4 | ≥ 5x10-4 | 24 | |
aperture | µ/m | < 75 | < 75 | < 75 | < 75 | 98 | ||
tensile strength | Vertical dry state | N/cm | ≥ 15 | ≥ 25 | ≥ 30 | ≥ 35 | 10% extension rate | |
Lateral wet state | N/cm | ≥ 10 | ≥ 20 | ≥ 25 | ≥ 30 | 15% | ||
Core board | Appearance |
| Pie form, middle rolled as a round | |||||
Structure |
| Belt pressed to be harmonica shape | ||||||
Raw material |
| PP , PE | ||||||
Antibacterial index |
| No bacteria breeding | ||||||
packing | length | m | 200 ± 2 | |||||
40’ container | m | 126,000 | ||||||
Outer diameter | m | 1.20 | ||||||
Iner diameter | m | 0.16 | ||||||
