Engineering Application of Composite Drainage Boards, High-density Polyethylene Drainage and Protection Boards, Siphon Drainage System
In the field of construction engineering, basement leakage and poor drainage of planted roofs have always been pain points plaguing the industry. Traditional drainage materials are prone to aging and have low drainage efficiency, which causes the structure to be eroded by accumulated water for a long time, leading to the risk of leakage. Jiamei New Materials Co., Ltd. is based in Tai'an High - tech Development Zone and has been focusing on the research and development of drainage systems for more than a decade. In response to these problems, it has innovatively launched high - density polyethylene composite drainage boards. By combining polymer material science with siphon drainage technology, we have developed a systematic solution with both efficient drainage and structural protection functions, which has been successfully applied in thousands of commercial buildings and underground projects.
This composite drainage board adopts a three - layer functional structure design:
- Water conduction layer: High - density polyethylene (HDPE) forms a three - dimensional drainage channel through special pressing molds.
- Filter layer: Non - woven geotextile effectively blocks sediment siltation.
- Protection layer: The compressive rib structure disperses the load pressure.
Its siphon drainage mechanism works through the synergistic effect of capillary action and gravitational potential energy: When water flows into the drainage channel, a negative - pressure siphon effect is formed in the channel with a specific aperture, accelerating the drainage speed to more than twice that of the conventional system. The main technical advantages are as follows:
| Material durability | The HDPE material is resistant to acid - alkali corrosion, with a service life of > 50 years. |
| Drainage efficiency | The drainage volume per unit area is ≥ 5L/m²·min. |
| Compressive performance | The deformation rate under a load of 250kPa is |
| Environmental adaptability | It maintains stable performance within the temperature range of - 40℃ to 80℃. |
In actual engineering applications, this product can significantly enhance three core values:
- Waterproof guarantee: Quickly drain away seepage water and eliminate hydrostatic pressure.
- Structural protection: Disperse soil loads and prevent roof cracking.
- Ecological benefits
Jiamei New Materials Co., Ltd. holds 4 invention patents and 22 utility model patents and has the second - level construction qualification for waterproofing, anti - corrosion and thermal insulation. Our production base is equipped with 25 automated production lines, with an annual production capacity of 50 million square meters, and has passed the ISO9001 quality system certification. In a commercial complex project in Zhengzhou, the basement using this drainage system showed after three - year monitoring:
- The leakage accident rate is reduced by 92%.
- The maintenance cost is saved by 370,000 yuan per year.
It is recommended that the engineering party focus on the matching degree between the weather resistance index of the material and the drainage efficiency of the system when selecting the drainage system. If you need to obtain the technical adaptation plan for a specific project, you are welcome to contact our engineering consultant team for a special calculation.
FAQ:
Q: Can the drainage board maintain effective drainage on the sloped roof?
A: The specially designed anti-slip bumps ensure stable laying on slopes ≤15°. The directional design of the water guide grooves ensures the directional collection of water flow.Q: Is the HDPE material prone to aging under long-term ultraviolet radiation?
A: We add 2.5% carbon black masterbatch to improve the anti-UV performance. The measured tensile strength retention rate is >85% after 5000 hours of accelerated ultraviolet aging.Q: How to solve the coordination problem between the drainage system and the waterproof membrane?
A: The supporting developed sticky adhesive forms a physical + chemical double bond, with a peel strength of 3.5N/mm, ensuring the complete combination of the waterproof layer and the drainage layer.Q: Does siphon drainage require additional energy to drive?
A: It completely relies on the self-weight of the water flow and the capillary action to form a negative pressure siphon, without external energy, meeting the green building standards.Q: How to ensure the drainage function in winter in frozen soil areas?
A: The material still maintains toughness at -40°C. The drainage channels adopt a honeycomb anti-frost heave design, and can adapt to the severe cold climate with the insulation observation well.Q: How to maintain the geotextile filter layer after it is blocked?
A: It is recommended to carry out pulse backwashing through the observation well every 5 years. We provide geotextile with a high water permeability rate of 130g/m² and a filtration accuracy
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