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The laying layer of glass fiber geogrid is divided into surface layer, foundation layer and lower road base

Author: Hengke Shandong HuaSu Engineering Co., Ltd Time: April 18, 2020 09:37 Visits: second
Description: the laying layer of glass fiber geogrid is divided into surface layer, foundation layer and lower road base layer. Glass fiber grid is used in the foundation layer. The laying position should be placed at the bottom of the foundation layer, and the anchoring method is used for construction. It must be placed at the lower 1 / 3 of the lower foundation layer. It can also be placed at the bottom of the lower road base, under the glass fiber grid, at least 20 mm thick sand cushion or laying geotextile. If there are local loose, anti hole and diffusion cracks on the surface of the original pavement and base course, repair and fill in advance to keep the surface intact.
 Glass fiber geogrid

The laying layer of glass fiber geogrid is divided into surface layer, foundation layer and lower road base

Glass fiber geogrid With glass fiber alkali free roving as the main raw material, the reticular structure material is made by weaving process. In order to protect the glass fiber and improve the overall performance, a new excellent geotechnical base material is formed by special coating and coating process.
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Layer analysis of glass fiber geogrid
1. Pavement surface course
a. For new asphalt concrete pavement, glass fiber grid can be placed between semi-rigid base and lower seal coat, or between lower seal coat and asphalt surface.
b. For the new cement concrete road surface, the glass fiber grid should be placed between the semi-rigid base and the rigid cement concrete seal coat.
c. For the maintenance of old asphalt pavement, spray method, anchoring method and self-adhesive method can be used to lay glass fiber grid on the original pavement. 20 mm-30 mm fine-grained asphalt concrete leveling layer can also be made on the original pavement, and then the glass fiber grid can be laid, and then the asphalt concrete surface course should be paved with the thickness of 60-100 mm.
d. For the maintenance of old cement pavement, self-adhesive method and oil spray method can be used to lay glass fiber grid on the original road surface, or 20 mm-30 mm fine-grained asphalt concrete leveling layer can be made on the original road surface, and then the glass fiber grid is laid, and then the asphalt concrete surface layer is paved with the thickness of 60-100 mm.
e. The self-adhesive method can be used for new pavement construction.
 Layer analysis of glass fiber geogrid
2. Foundation layer
Glass fiber grid shall be used for the foundation layer, and the laying position shall be placed at the bottom of the foundation layer, and the anchoring method shall be adopted for construction.
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3. Lower Subgrade
A. glass fiber geogrid must be placed at the lower 1 / 3 of the lower foundation layer.
B. It can also be placed at the bottom of the lower road base, under the glass fiber grid, at least 20 mm thick sand cushion or laying geotextile.
C. anchoring method is adopted for construction
4. Requirements for reinforced pavement
Glass fiber geogrid reinforced concrete pavement. The pavement shall meet the following requirements:
A. the longitudinal flatness, the slope and smoothness of transverse crown shall meet the design standards. If not, they shall be treated before paving.
B. the bearing capacity of the pavement shall be leveled before overlay. If the bearing capacity is insufficient and fails to meet the standard, or the slab bottom of the cement concrete pavement is hollowed out, it shall be increased. The joints and cracks of cement concrete pavement should be cleaned and filled in advance.
C. if there are local loose, anti hole and diffusion cracks on the surface of original pavement and base course, repair and fill in advance to keep the surface intact.
D. the original pavement surface should be washed clean to remove dust. Loose particles and debris.
 Reinforced glass fiber geogrid
Glass fiber geogrid has the characteristics of high Q degree, low elongation, high temperature resistance, high modulus, light weight, good toughness, corrosion resistance and long service life. It can be widely used in the engineering fields of old cement pavement, airport runway maintenance, embankment, river bank, slope protection, road and Bridge Pavement increasing Q treatment.
The glass fiber geogrid can prevent pavement rutting fatigue crack, hot cold expansion crack and reflection crack below, and can disperse pavement bearing stress, prolong pavement service life, high tensile Q degree, low elongation, no long-term creep, good physical and chemical stability, good thermal stability, fatigue crack resistance, high temperature rutting resistance, low temperature shrinkage crack resistance, delay and reduce reflection cracks.
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