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Drainage board

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  • Drainage board
    The plastic drainage plate is made of polystyrene (HIPS) or polyethylene (HDPE) as raw material. The plastic bottom plate is stamped into the convex point (or hollow cylindrical porous) of the conical protrusion or stiffening rib. After continuous innovation and research, the raw material has been greatly improved and changed. Now it is pressed from polyvinyl chloride (PVC) as raw material. The compressive strength and overall flatness have been greatly improved, with a width of 1-3 meters, the length is 4~10 meters or more.
    The drainage boards commonly used in construction are: plastic drainage board, storage drainage board, coiled material drainage board, anti-seepage water drainage board, composite drainage board, three-dimensional drainage board, flake drainage board, etc.
    Main functions
    Water conductivity and drainage
    The concave-convex hollow vertical rib structure of the waterproof and drainage protection board can quickly and effectively export rainwater, greatly reduce or even eliminate the hydrostatic pressure of the waterproof layer, and the effect of active waterproof can be achieved through this active water conduction principle.
    Waterproof performance: Polyethylene (HDPE) polystyrene (PVC) waterproof and drainage protection board material itself is a good waterproof material. By adopting a reliable connection method, the anti-drainage board becomes a good auxiliary waterproof material.
    Protection and protection
    The anti-drainage protection board can effectively protect the structure and waterproof layer, and resist all kinds of acid and alkali in the soil and the root thorns of plants. In the basement wall backfill soil, it can protect the building and waterproof layer from damage.
    Sound insulation and ventilation and moistureproof function:
    Laboratory data show that polyethylene (HDPE) polyvinyl chloride (PVC) waterproof and drainage protection board can effectively reduce the indoor 14 dB, 500HZ noise, with obvious noise reduction and sound insulation function. Waterproof water guide plate in the ground or wall use, can also play a very good ventilation and moisture-proof effect.
    Scope of application
    Greening works: garage roof greening, roof garden, vertical greening, sloping roof greening, football field, golf course.
    Municipal engineering: airport, road subgrade, subway, tunnel, landfill.
    Construction works: building foundation layer or lower layer, basement inner and outer wall body and bottom plate, roof seepage control and heat insulation layer, etc.
    Water conservancy project: reservoir seepage control water, reservoir, artificial lake seepage control water.
    Traffic engineering: highway, railway subgrade, dam and slope protection layer.
    Construction specification
    1. Please store the drainage board in a dry and ventilated environment to prevent exposure to the sun and keep away from fire.
    2. Please put the drainage protection board vertically or horizontally, and do not tilt or cross the horizontal pressure. The stacking height should not exceed 3 layers, and heavy objects should not be piled up.
    3. When laying, it should be smooth and natural, and laid along the slope or according to the water flow direction.
    4, single paving geotextile lap joint to ensure 150cm, lap joint with glue or sand compaction to avoid movement, and then backfill, the first layer of backfill soil to ensure compaction before the next step, layered backfill must be tamped.
    Laying Regulations
    1. Clean up the garbage and cement leveling on the laying site so that there is no obvious bump on the site. The outdoor garage roof and roof garden need to have a slope of 2-5.
    2. It can concentrate the water discharged from the drainage board to the nearby sewer or the nearby city sewer.
    3. Anti-seepage water on the basement floor, overhead the floor above the foundation, that is, a layer of drainage board is now made before the floor is made. The round protruding platform is downward, and blind ditches are left around, so that groundwater cannot come up. Seepage water naturally flows into the surrounding blind ditches through the space of the drainage board, and then flows into the sump through the blind ditches.
    4. The inner wall of the basement is impermeable to water. Drainage boards can be laid on the main wall of the building, and the round table surface protrudes to the main wall. A layer of single wall is built outside the drainage board or steel wire mesh powder cement is used to protect the drainage board, so that the space of the seepage board outside the wall flows straight down into the blind ditch and directly into the sump.
    5. When laying drainage boards in any area, care must be taken: Do not let soil, cement, yellow sand and other garbage enter the front space of the drainage board, and ensure that the space of the drainage board is unblocked.
    6. When the drainage board is laid, protective measures should be taken as far as possible. When the drainage board is laid at the level or outdoor garage, backfilling should be done as soon as possible to prevent the strong wind from affecting the quality of the drainage board. The basement and inner wall waterproof should be protected as soon as possible to prevent the drainage board from being damaged by people or things.
    7. Backfill soil is cohesive soil. It is ideal to lay 3-5cm of yellow sand on geotextile, which is conducive to filtering water of geotextile. If backfill soil is a kind of nutrient soil or light soil, there is no need to lay a layer of yellow sand, which is very loose and easy to filter water.
    8. When laying the drainage board, the next 1-2 fulcrums will be laid on the side to the right. The two bottom plates can also be flush and overlapped with geotextile. As long as no soil enters the drainage channel of the drainage board, the drainage can be kept unblocked.