Sandbaggy's Biaxial Geogrid Rolls are designed to provide exceptional reinforcement and stability for a variety of ground engineering projects. Made in the United States from high-quality polypropylene, this geogrid is robust and flexible, essential for applications requiring both vertical and horizontal stability.
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The durable construction of the geogrid resists UV degradation and chemical exposure, ensuring it withstands challenging environmental conditions over the long term. Its open grid structure promotes the effective interlocking of soil and aggregate materials, enhancing compaction and even load distribution. This helps prevent settling and shifting, thereby extending the lifespan of your project with minimal maintenance required.
Each roll is crafted for easy deployment, tailored to accommodate a wide range of projects and compatible with various soil and aggregate types. The biaxial nature of the grid enables efficient interlocking, reducing the need for additional fill materials and consequently lowering both costs and labor.
In addition to typical uses like roadways, driveways, and retaining walls, Sandbaggy's Biaxial Geogrid Mesh is also excellent for railway subgrades, parking lots, and erosion control projects, showcasing its versatility in diverse infrastructural and environmental applications.
A Biaxial Geogrid is a type of geosynthetic material made from sturdy polymers like polypropylene, featuring a grid-like structure that provides strength in two directions. It’s used in various construction and civil engineering projects to stabilize soil, enhance load capacity, and reinforce surfaces like roads and retaining walls.
The main difference between uniaxial and biaxial geogrids lies in the direction of their strength. Uniaxial geogrids are designed to provide reinforcement in one direction, making them ideal for retaining walls where stress is predominantly in one direction. Biaxial geogrids, on the other hand, offer strength in both horizontal and vertical directions, perfect for applications like roadways and parking lots where stress comes from multiple directions.
Biaxial geogrids save time and money by reducing the need for traditional construction materials like thick layers of soil and aggregate. They simplify installation processes and reduce the overall amount of fill needed, speeding up project timelines. Additionally, their reinforcement properties extend the lifespan of construction projects, decreasing long-term maintenance costs and improving durability against environmental stresses.
No. Geogrid strength does not correlate to in-ground performance, which has been demonstrated in multiple studies (Watts et al., & Giroud & Han, ). The ability of the geogrid to interlock and confine the aggregate subjected to traffic loading is fundamental to deliver enhanced performance of the mechanically stabilized layer (MSL). This enhanced performance can only be measured through full-scale in-ground trafficking testing. Geogrid characteristics such as rib shape, aperture shape, polymer type and material structure configuration, rib thickness, in-plane stiffness, junction shape, geogrid-aggregate compatibility and many other factors are contributors to the amount of interlock and confinement achieved, and therefore, enhanced performance of the MSL.
No, they don’t. Aperture shape and size are key parameters to allow interlock between the particles of the granular fill material and the geogrid. However, other geogrid properties such as the rib height, rib width, rib aspect ratio, rib material, geogrid in-plane stiffness, and relative location of the rib with respect to the center of mass of the granular fill particles are key to delivering improved performance of the mechanical stabilized layer (MSL). Having the right shape of rib is also fundamental to the performance of the system.
Geogrids must have a minimum tensile strength to make sure the product is not damaged during the installation and compaction of aggregate. However, no correlation has ever been shown to exist between tensile strength and the performance of geogrids used for roadbed applications. This has been demonstrated in multiple studies (Watts et al., & Giroud & Han, ).
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No, InterAx geogrids work differently than TriAx or BX geogrids because of InterAx’s unique structure, its wide range of aperture shapes and sizes, and the interactive outer layers. By having a geogrid structure with multiple aperture shapes and sizes, particles of different types of fill materials can interlock and interact more efficiently with InterAx. This geogrid/particle interaction is enhanced by InterAx’s interactive outer layers, which conform to the shape and angularity of the particles of the fill material. These characteristics enhance the load distribution onto the subgrade, mitigating subgrade deformation and early failure of the mechanically stabilized layer (MSL). Lastly, since different types of geogrids have different structures, material characteristics, and performance properties, geogrids are not interchangeable without revising the design.
For more information, please visit Plastic Geogrid.
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Biaxial geogrid was invented by Tensar in the late s. Biaxial geogrids have square or rectangular openings, called apertures. Different types of biaxial geogrids exist on the market, but for roadbed applications, testing has consistently shown that integral geogrids made by a process known as punched and drawn perform best. In , Tensar introduced multiaxial geogrids, known as TriAx. These geogrids have triangular apertures and ribs with a higher aspect ratio than biaxial geogrids. This geometry provides better interlock with the surrounding aggregate than biaxial geogrids, resulting in improved performance in stabilization applications. In , Tensar introduced InterAx geogrids. InterAx builds on the decades of knowledge and testing at Tensar to deliver a higher level of performance. Through thousands of hours and millions of dollars of research and development, we combined advanced materials science, a revolutionary new geometry, extensive performance validation testing, and an entirely new design approach to deliver better solutions that are more economical, longer lasting, more resilient, and more sustainable.
Geogrids are polymeric (plastic) construction materials used to confine and stabilize granular fill materials to increase their load distribution capabilities while reducing its potential to deform under load. Geogrids have openings called apertures, which allow for rock particles to strike through. This action is known as particle interlocking, and it allows for rock to become confined within the aperture.
Geotextiles are construction materials made from woven or non-woven polymeric (plastic) fibers. They can be used to provide filtration and separation, which restrains soil from mixing with adjacent materials due to dynamic forces. Geotextiles cannot confine granular fill materials, since there are no apertures to achieve particle interlocking.
Unless you are an expert in pavement design, it may be very difficult to evaluate all of the information that may be submitted to you – let alone find time to do so. Unscrupulous suppliers often try to take advantage of this fact by providing large quantities of information, even though it is not sufficient to show equivalency and may not even be relevant to the application. You can reduce the confusion by writing a project specific specification that includes the information outlined in the checklists we linked above – depending on the application (subgrade stabilization or designing a pavement).
Yes. There are different design methods and inputs for each design method. The allowable amount of permanent deformation also likely differs for both of these applications. They require different testing, and have significantly different failure criteria. Specifics on what to look for when comparing testing for subgrade stabilization and paved road design can be found in the FAQ below.
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Performance is not based on index properties of the geogrid, measured in a lab. It is determined empirically, using full-scale in-ground trafficking testing. Request a copy of the design inputs and the design method which were used as the basis of equivalency. Also ask for the full-scale testing, with the specific product being submitted (not another “similar product”), and documentation from an independent authority verifying that the testing and calibration were performed properly. Once you have this information, you will be able to compare performance related sections and evaluate equivalency.
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Performance is not based on index properties of the geogrid, measured in a lab. It is determined empirically, using full-scale in-ground trafficking testing. Require a copy of the third-party testing on which the supplier is basing its claim of equivalency. This testing should include Accelerated Pavement Testing (APT), performed on paved sections, following the procedures defined by NCHRP report 512. There should be multiple sections tested over different subgrade conditions and different pavement section thicknesses. Require a third-party review, by pavement design experts, verifying that the design values and methodology used are supported by testing for that product, and follow the guidance of AASHTO in R50-09 (“Geosynthetic Reinforcement of the Aggregate Base Course of Flexible Pavement Structures”). Also require third-party field validation testing, following AASHTO T221-90 (), to demonstrate that the results obtained in the field support the assumptions used in the design methodology, and that deformations are in line with predictions.
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Contact us to discuss your requirements of Plastic Geogrid Mesh. Our experienced sales team can help you identify the options that best suit your needs.