Plastic Drainage Board
Plastic drainage board is a fine vertical passage for silt, silt soil and saturation sticky soil by use of drainage concretion. It greatly decreased the time for concretion. In the treatment of soft groundwork, it has the same function, design and construction equipment as bagged sand well. It is one new kind of material to drain off the underground water.
Technical data
| Art. No. | PLD0501 | PLD0502 | PLD0503 | PLD0504 | Remarks | |
| Type | |
| Item | |
| SPD-I | SPD-II | SPD-III | SPD-92 | |
| Unit length weight Wt./m | 100 | 110 | 120 | 130 | ±5% | |
| Thickness mm | 3.5 | 4.0 | 4.5 | 6±0.5 | | |
| Width mm | 100 | 100 | 100 | 100 | ±2 | |
| Tensile strength kN/10cm | ＞1.3 | ＞1.4 | ＞1.5 | ＞1.6 | Compound part | |
| Elongation % | 8.5 | 7.8 | 7 | 6 | Tensile strength kN/10cm | |
| Vertical drainage Wt./per unit area cm3/s | 20 | 30 | 40 | 50 | Side pressure 350kPa | |
| Filter | Filter coefficient cm/s | ＞5×10-4 | ＞5×10-4 | ＞5×10-4 | ＞5×10-4 | | |
| Tensile strength | Dry N/cm | 20 | 25 | 30 | 40 | Extension rate 10% | |
| Damp N/cm | 15 | 20 | 25 | 25 | Extension rate 10% Marinated 24hr | |
| Soil separation mm | ＜0.075 | ＜0.075 | ＜0.075 | ＜0.075 | O98 Hole diameter | |
