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Geotextile is used in highways

Geotextile is used in highways

  • Categories:NEWS
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  • Time of issue:2020-03-27
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(Summary description)Geotextile is widely used in many fields, such as water conservancy engineering, construction engineering, landfill, highway construction and so on. Today, let's learn about geotextile is used in highways.

Geotextile is used in highways

(Summary description)Geotextile is widely used in many fields, such as water conservancy engineering, construction engineering, landfill, highway construction and so on. Today, let's learn about geotextile is used in highways.

  • Categories:NEWS
  • Author:
  • Origin:
  • Time of issue:2020-03-27
  • Views:0
Information

Geotextile is widely used in many fields, such as water conservancy engineering, construction engineering, landfill, highway construction and so on. Today, let's learn about geotextile is used in highways.

Generally, the quality of the highway will not have problems when it is just built, but if it is used for a long time, it will be gradually damaged due to various reasons, at this time, the highway needs to be transformed accordingly.

The main component of the highway is cement, while the asphalt is used for pavement reconstruction. But because of the direct contact between them, cracks will appear in the middle of various stress responses, and the existence of cracks is obviously the embodiment of the failure of pavement reconstruction, so what should we do? That's right. Geotextile is also a relatively good material that is currently recognized for the reconstruction of old pavement to prevent cracks.

Why can geotextile be used to prevent cracks in highway reconstruction?

1. Cracks are caused by the action of tensile stress in cement and asphalt overlay when the temperature drops, while the existence of geotextile can reduce the tensile stress under the asphalt overlay.

2. Geotextile has good ductility, so its widening range can be increased. When there is shear at the joint of highway, the existence of geotextile can alleviate it and play a transitional role.

3. The geotextile has a good anti-seepage effect and a good porosity. However, due to the adhesion of asphalt, it plays a role of anti-seepage and water separation, so as to prevent the water of the pavement from permeating into the subgrade, so as to protect the subgrade and extend its service life.

However, not all geotextiles can be used as crack proof materials for pavement reconstruction, and there are certain technical indicators in this respect:

1. The geotextile can still keep its normal physical form at 150 ;

2. The geotextile should have good adsorption to asphalt oil;

3. Geotextile should have certain tensile strength and ductility;

4. Geotextile should have certain uniformity, that is to say, it should have tensile and ductility in different directions.

 

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