{"id":7588,"date":"2025-08-19T13:43:05","date_gmt":"2025-08-19T13:43:05","guid":{"rendered":"https:\/\/geomatrix.co\/?p=7588"},"modified":"2025-08-19T13:43:05","modified_gmt":"2025-08-19T13:43:05","slug":"geomallas-biaxiales-refuerzo-capas-granulares","status":"publish","type":"post","link":"https:\/\/geomatrix.co\/en\/geomallas-biaxiales-refuerzo-capas-granulares\/","title":{"rendered":"Biaxial geogrids: reinforcement in granular layers of pavements"},"content":{"rendered":"

1. Reinforcement effect<\/strong><\/p>\n

biaxial geogrids FORTGRID BX<\/strong> are commonly installed at the interface between the base and the subbase, between the subbase and the subgrade, or within the granular base itself. This significantly reduces the stresses transmitted to the subgrade compared to unreinforced sections (Figure 1).<\/p>\n

\"Comparaci\u00f3n

Comparison of loads transmitted to the subgrade in (a) unreinforced pavement and (b) geogrid reinforced pavement (According to Zornberg, J.G., 2013).<\/p><\/div>\n

 <\/p>\n

In practice, geogrid reinforcement improves the load-bearing capacity and service life of the pavement, reduces the thickness of granular layers and reduces environmental impact.<\/p>\n

2. Reinforcement mechanism<\/strong><\/p>\n

geogrids FORT<\/strong>\u00a0effectively interact with the granular material generating restriction to the lateral displacement of particles<\/strong>This increases the stiffness and stability of the system. As a result, the response of the pavement to repeated loading is improved, represented quantitatively through parameters such as the Traffic Benefit Ratio (TBR)<\/strong> and the Base-Course Reduction Ratio (BCR)<\/strong>.<\/p>\n

The effect of geogrid reinforcement is explained by the following reinforcement mechanisms:<\/p>\n

a. Increased bearing capacity<\/strong><\/p>\n

The geogrid modifies the original failure surface, creating an alternative surface contained between the granular layer and its interface. This substantially improves the bearing capacity<\/strong> (Figure 2).<\/p>\n

\"Diagrama

Effect of geogrid reinforcement on the bearing capacity of the system.<\/p><\/div>\n

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b. Lateral displacement restriction<\/strong><\/p>\n

He hindering<\/strong> (interlock) causes the aggregate particles to be confined in the openings of the geogrid, limiting their mobility when loads are applied. Therefore, this mechanism generates a confinement that opposes the appearance of lateral shear flows that result in a better stress distribution and less deformation<\/strong>This is because it induces a permanent compression condition in granular materials, which are typically stress-dependent. This behavior is illustrated in (Figure 3).<\/p>\n

\"Diagrama

Figure 3. Lateral displacement constraint generated by particle confinement.<\/p><\/div>\n

 <\/p>\n

The performance of the above reinforcement mechanism is done through the measurement of benefit factors such as TBR and BCR as explained below:\u00a0<\/strong><\/p>\n

3. Performance indexes: TBR and BCR<\/strong><\/p>\n