Product

Composite drainage net is a new type of drainage earthwork material. With high density polyethylene (HDPE) as raw material, processed by special extrusion process, it has three special structure. The middle rib is large, and is arranged in a vertical direction, which forms a drainage channel, and the upper and the lower cross bars are formed to support the prevention of the drainage channel of the earthwork cloth, and the drainage channel can be kept very high even under very high load. Both sides of the soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and water and soil and.
Product use:
Mainly used in railway, highway, tunnel, municipal engineering, reservoir, slope protection and other drainage works, the effect is remarkable.
Product features:
1 strong drainage (equivalent to one meter thick gravel drainage).
2 high tensile strength.
3 to reduce the probability of the network core embedded in the soil, to maintain long-term stable drainage.
4 long term under high pressure load (can withstand the compression load of about 3000Ka).
5 corrosion resistance, acid and alkali resistance, long service life.
6 construction is convenient, shorten the construction period, reduce the cost.
Action: 1, laying between the foundation and the bottom base, used for the discharge of water between the foundation and the bottom base, blocking the capillary water and effectively combined to the edge of the drainage system. This structure automatic relationship foundation drainage channels, drainage time is greatly shortened and the selection of foundation material is used to reduce the number (can be used with more fine material, with relatively low permeability material). Can prolong the service life of the road.
2, in the bottom of the laying of drainage network to prevent the bottom base of fine material into the ground (that is, to play a role in isolation). Aggregate base will be in a limited extent to the upper part of the geotechnical network. In this way, the composite geotechnical drainage network also has a potential to limit the horizontal movement of the aggregate base, in this way, it is similar to the role of the reinforcement of the soil grid. Generally speaking, the tensile strength and rigidity of composite geotechnical drainage net is better than that of many geotechnical grids for foundation reinforcement, which will improve the supporting capacity of the foundation.
3, the road aging, cracks formed, most of the rain will enter the section. In this case, the drainage network directly laid under the pavement, instead of the drainage foundation. Drainage network can be in the water into the ground / before the end of its first collection. But also can be in the bottom of the drainage network to pack a layer of film, to further prevent moisture into the foundation. For rigid road systems, this structure allows the design of the road with a high coefficient of drainage Cd. Another advantage of this structure is that it is possible to make the concrete more evenly hydrated (the study of the degree of this advantage is being carried out). This structure can extend the service life of the road, whether it is the rigid road or the flexible road system.
4, in northern climates, laying drainage network can help reduce the impact of frost heave. If the freezing depth is very deep, the soil can be laid in the bottom of the base of the location, as a capillary blockage. Also often need to use granular subbase replacement is not easy to frost, extends to frozen depth. Backfill easy freezing can directly fill in the above drainage network, until the base line surface. In this case, the system can be connected to the drain outlet, so that the underground water level is equal to or below this depth. This could potentially limit the development of ice crystals, which are not restricted to traffic loads during the spring ice melting in cold regions.