Product perforemance:

1. Mechanism of reinforcing the soil with geogrids

Mechanism  of  reinforcing  the  soil  with  geogrids  exists  in  interaction between geogrids and soil. Generally speaking, the interaction has three circumstances:

1) Rubbing action between surface of geogrids and soil.

2) Locking action between holes of geogrids and soil.

3) Passive impedance action between soil and ribs of geogrids.   

Three kinds of action above can fully restrict the lateral displacement of soil grains, which greatly enhance the independence and stability of soil mass. Three kinds of action separately exert different influence on soil mass with the factors, such as types of geogrids, sizes of holes and grains, etc. Adopting the geogrids to strengthen soil can improve foundation bearing capacity and restrict the lateral displacement of soil mass.

2. Mechanics effect of geogrids

Through directional stretch of geogrids, molecular polymer is aligned at stretching direction, which   reinforce the connecting strength among molecule and greatly improve the tensile strength (five to ten times), while the elongation is 10% to 15% of original materials.  The  interlocking  strength  of  soil  and  stone  in  gridding  of geogrids raises  and  their  coefficient  of  friction  also  raises   greatly,  which  make  geogrids  having  great advantage over other reinforcement materials in ability to resist lifting or  reinforcement  effect of  geogrids  to soil. So geogrids have better mechanics performance than other reinforcement materials.

3. Durability of geogrids

The raw material of geogrids is polypropylene or  polyethylene,  and  the  main f actor  of  their  aging  is  ray radiation: ultraviolet radiation. While  geogrids  are  deeply  buried  under  rolled  and  compacted  soil,   and ultraviolet radiation is almost zero. Adding the additives of  anti-ultraviolet  radition  and  anti-aging,  geogrids have good performance  of  acid  resistance,  alkali  resistance,  corrosion  resistance  and  aging  resistance.

4. Resistance to low temperature

Our company had taken one year to develop and had utilized the State "The Ninth  Five-Year"  scientific  and technological achievements, then developed  the  geogrids  that  can  resist  low  temperature.  Under  -45°C, geogrids won't part after they are doubled back for 100 times at their ribs. After geogrids have repeated  cold-hot cycle from -45°C to 50°C for 200  times,  their  various  performance  index  all  meet  the  State  Standard requirements. Moreover they had passed the test of Qinghai-Tibet Railway.

5.Construction performance

Geogrids are light  plastic  flat net materials that have certain flexibility, they are easy to cut  and  connect  with polyethylene rope or connceting-rod on the spot, also can be laid to overlap each other,  which  is  convenient to form the required shape on the spot. Moreover, during the course of construction, they have small influence on flex and simple operation, even don't need special operation machine or professional skilled workers.