News

News

How strong is the fatigue cracking resistance of polyester geogrid?

Release time:

2023-08-16 14:37

Source:

Yizheng Kangshun Geotechnical Materials Co., Ltd.

 

Polyester geogrid uses the warp and weft in the warp-knitted directional structure fabric, and the yarns are not bent to each other at the intersection point, and high-strength fiber filaments are tied together to form a strong binding point to give full play to its mechanical properties. High-strength polyester fiber polyester geogrid has high tensile strength, small extension force, large tear strength, small difference in vertical and horizontal strength, ultraviolet aging resistance, wear resistance, corrosion resistance, light weight, and soil or gravel interlocking force to enhance soil shear and reinforcement progress soil integrity and load force has obvious effect.

 

The above mentioned polyester geogrid useful anti fatigue cracking, how much do you know about it? In the old cement concrete pavement asphalt overlay, its main effect is to improve the use of pavement function, the bearing effect is not much dedication, rigid concrete pavement under the overlay still play a crucial bearing effect. The asphalt overlay on the old asphalt concrete pavement is different, and the asphalt overlay will bear the load together with the old asphalt concrete pavement. Therefore, the asphalt overlay on the asphalt concrete pavement, in addition to the reflection cracks, together will also be due to the long-term effect of the load and fatigue cracking. Let's analyze the load-bearing condition of the asphalt overlay on the old asphalt concrete pavement: because the asphalt overlay is a flexible overlay with the same nature as the asphalt overlay, when subjected to the load effect, the pavement will bend. The asphalt cover layer directly touching the wheel is subjected to pressure, and the surface layer is subjected to tensile effect in the area outside the wheel load margin. Because the two stressed areas have different stress properties and are close to each other, damage is easy to occur at the junction of the two stressed areas, that is, the sudden change of force. Under the effect of long time load, the attack fatigue cracking.

 

Polyester geogrid in the asphalt cover layer, can be the above-mentioned pressure stress and tensile stress slack, in the two force area between the formation of a buffer zone, where the stress gradually changes rather than sudden changes, reducing the stress sudden change on the asphalt cover layer damage. The low elongation of the glass fiber geogrid reduces the deflection of the road surface and ensures that the road surface will not be deformed.

 

The above is about the polyester geogrid related content, we hope to help.

 

More news