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Is the waterproof and drainage effect of plastic geogrid good?

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  Plastic geogrids are used in many reinforcement layers for sea reclamation and waterproofing projects, and their tensile resistance can improve the strength of the reinforcement layer. At the same time, it greatly improves the strength of the waterproofing layer and prolongs its lifespan. So, many people are concerned about the waterproof and drainage effects of plastic geogrids when using them, and want to know what the waterproof and drainage effects of plastic geogrids are. In order to satisfy everyone's curiosity about plastic geogrids, let's analyze the waterproofing and drainage systems of plastic geogrids in detail.

  Whether it is the original design and construction of road side vegetation slopes, or the addition of road side vegetation slopes on the top of pedestrian barriers on existing ramps, it is advisable to damage the plastic geogrid waterproofing and drainage system on the road side during the construction process and daily use after completion, causing degradation of the steel plastic geogrid on the road side. The reasons are as follows: there are defects in the waterproof layer of the plastic geogrid on the original road side. Even if the original practice is maintained, the waterproof layer of the plastic geogrid usually needs to be rolled onto the prefabricated hollow slab. Therefore, leakage is still inevitable at weak points such as walls and gutter edges.

  Especially for the rigid plastic geogrid waterproof partition surface, a serious problem is that the plastic geogrid waterproof layer may crack and the steel plastic geogrid may degrade after the construction is completed. There are many reasons for cracks: thermal expansion of the diaphragm surface caused by climate change and solar radiation; The warping deformation of the partition panel after being subjected to force; Changes in the partition surface caused by reasons such as foundation settlement or shrinkage of the wall after bearing weight; Removal of deformation or material shrinkage deformation of the partition panel.

  When constructing vegetation slopes on the road side, the original plastic geogrid waterproof layer was damaged, and the construction of vegetation slopes on the road side may still cause degradation of the steel plastic geogrid. However, multiple landscaping projects were carried out on the plastic geogrid waterproof layer on the road side, which is more likely to cause damage to the plastic geogrid waterproof layer on the road side and lead to degradation of the steel plastic geogrid.

  Even without drilling holes or burying fixed iron parts, if construction is not carried out carefully, it will still damage the waterproof and drainage structure of the plastic geogrid on the road side, causing degradation of the steel plastic geogrid on the road side. Planting can sometimes damage the waterproof layer of plastic geogrids, such as using a shovel during soil filling, which may damage the waterproof layer of plastic geogrids.

  Geogrids are commonly used as reinforcement materials for reinforced soil structures or composite materials. Geogrids are divided into four categories: plastic geogrids, steel plastic geogrids, glass fiber geogrids, and polyester warp knitted polyester geogrids. Due to the rearrangement and orientation of polymer polymers during the manufacturing process of plastic geogrids, the bonding force between molecular chains is strengthened, achieving the goal of improving their strength. Its elongation is only 10% to 15% of the original plate. If anti-aging materials such as carbon black are added to the geogrid, it will have better durability such as acid resistance, alkali resistance, corrosion resistance and aging resistance.

  Geosynthetic material reinforced sand cushion can effectively reduce the settlement deformation of soft soil foundation under the upper embankment load. The on-site test data shows that under the same conditions of foundation soil layer and embankment filling, the effect of plastic geogrid geogrid geogrid reinforced sand cushion is better, followed by double-layer geogrid reinforced sand cushion, and then single-layer geogrid reinforced sand cushion.

  Compared with the unreinforced sand cushion scheme, the reinforced sand cushion scheme can reduce the settlement per unit embankment height by 10% to 31.5%. In the sand cushion layer, increasing the number of geogrids laid from a single layer to a double layer can not only reduce the settlement deformation of the soft soil foundation under the upper embankment load, but also reduce the tensile force borne by the geogrids.

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