Drainage cushion is a commonly used material in road construction, foundation treatment, basement waterproofing and other projects. So, what is its drainage principle?
1. Structure and composition of drainage cushion
The drainage cushion layer is composed of polymer material and drainage board. The drainage board is designed with a three-dimensional grid structure, which can drain water from the ground Out. A layer of filter material is laid on the surface of the drainage board. The main function of the filter material is to prevent debris from entering the inside of the drainage board, and it can also filter out impurities and purify Water quality. The filter material is also covered with a layer of filter cloth, which can protect the filter material and prevent it from being damaged by the outside world.
2. Drainage principle of drainage cushion
The drainage principle of the drainage cushion mainly depends on its internal three-dimensional grid structure. When moisture seeps from the ground into the interior of the drain board, this moisture will A channel is formed in a three-dimensional mesh structure and then discharged along this channel. This drainage method is not only efficient, but also avoids water Points accumulate in the soil, which can prevent building damage problems caused by excessively high groundwater levels.
The working process of the drainage cushion can be divided into the following steps:
1、Moisture penetration: When there is water on the ground, the moisture will penetrate to the surface of the drainage cushion first.
2、Filtration and purification: Through the filter material and filter cloth on the surface of the drainage board, impurities and particles in the water will be filtered out, which can ensure that the discharged water The quality is relatively clean.
3、Formation channel: Moisture can form a drainage channel in the three-dimensional grid structure inside the drainage board.
4、Drain moisture: With increasing moisture, this moisture will be quickly drained along the drainage channel, which can keep the ground dry and stable 。
3. Application of drainage cushion in engineering
1、Road construction: In road construction, drainage cushion is commonly used in subgrade drainage, which can prevent road damage caused by water accumulation.
2、Foundation treatment: In building foundation treatment, the drainage cushion can discharge excess water in the foundation and improve the stability and bearing capacity of the foundation Force.
3、Basement waterproofing: In basement construction, drainage cushions are able to prevent flooding problems caused by high groundwater levels.
4、Outdoor places such as squares and parks: In outdoor places such as squares and parks, the drainage cushion can ensure the dryness of the ground and improve the comfort of use.
4. Selection and construction of drainage cushion
When selecting the drainage cushion, the material, structure, size and drainage performance of the drainage cushion should be comprehensively considered according to the specific requirements of the project Su. During the construction process, it is also necessary to strictly follow the construction specifications to ensure that the drainage cushion can give full play to its drainage effect.
Post time: Mar-27-2025
