Using Geogrid Biaxial is the Idol Method for Soil Stabilization

The Uniaxial Geogrid is tough and stringent but convenient, and it can be dealt with effortlessly and instantly without utilizing different tools or devices. The  Geogrid Biaxial is highly sporting in terms of cost and execution. The price of this imaginative substance will not harm the pocket of any contractor. They can finds it more convenient to establish the biaxial geosynthetic than conventional materials. It has an extended life and is maintenance-free, as it is made from recycled fiberglass. It can be handily rebuilt or displaced if harmed, making the Biaxial Geogrid highly endurable.

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Understand What is Geogrid Biaxial?

Biaxial geosynthetic is a particular kind of geotextile utilized for structure operations. It is made with a mesh of fibers in an X and Y shape, providing stability and flexibility. It can stretch enormous lengths and has been experimented with under high load situations, and it&#;s incredibly lightweight and low thickness makes it very manageable to carry.

How to Use Geogrid Biaxial ?

Biaxial geogrid can be used in multiple ways. One application is to wrap the layers between building components. It can also be utilized over new highways and parking yards to avoid slippage on bridges, conserve walls, and build organizations.

What are the benefits of Uniaxial Geogrid ?

Uniaxial Geogrid has great tensile stability, formulating it as an excellent element of bridge-building. Its extremely thin thickness makes it much lighter than other geotextiles and can be used in various applications where heavyweight is a desired property. Geogrid biaxial  operates nicely in huge moisture regions and can resist drastic weather.

Applications of Biaxial Geosynthetic

The common goal of Biaxial Geogrid is to deal with assignments that need durability and strength. While clarity is the major characteristic of biaxial geosynthetic, it is also very adequate for those who want to construct and formulate new creations.

This can be utilized in the following aspects:

1. The use of reinforced concrete can facilitate the strength of structures and withstand the strength of large objects, such as multi-layer reinforced concrete, when used in intersections with steel shafts.

2. Engineers also commonly use PP biaxial Geogrid when constructing houses or industrial structures where the area is limited, when wind loads are high, or when height limits apply.

3. To enhance the falling items of reinforced solid configurations and strengthen them against wind loads, biaxial Geogrid is used in the building industry.

4. Different enterprises can use it, including building materials, highways, bridges, dams, and underground installations.

5. The Geogrid is formulated of steel cable rope with a diameter of 1.5 to 2.0 and a length of 6 m, which is bolstered with steel rings by a special technique so that the Geogrid has high compressive strength and significant tensile strength as well as enough flexibility in workability to fulfill several applications that do not need high-strength substances.
6. Biaxial Geogrid can be used in numerous areas such as subways, bridges, retaining walls, etc., which associate immediately with compressive and tensile courage requirements.
7. The twisted stability of the wire is enormous, so it can be utilized in various positions where high loads are expected without cracking, infringement, or clasping under load.
8. It is simple to deal with and establish; with additional installation flexibility than different Geogrids, PET biaxial Geogrid can be attached across tears, gaps, and junctions in configurations that encompass substantial motion over time.

What are the Benefits?

By reinforcing the various wires woven, the Geogrid Biaxial  is created and made from high-density polyethylene. This format intends to expand its friction to lifting, resist uncertainty, and give tensile stability. This implies that it will not shatter when the soil laid on evolves drenched by water. A biaxial geogrid can also be used as an embankment dam or for other civil engineering applications.

Uses of Biaxial Geogrid

Biaxial Geogrid is a favorable substance for any structure project, from road paving to creating establishments. Another popular method of the material is industrial flooring and roofing. The product appears in a tubing shape, making it effortless to install. When introducing HDPE Uniaxial Geogrid, a laborer can utilize its biological stability or extra support. One can also cut it from numerous curves, depending on the needs of the project

What is geogrid?

Geogrid is a geosynthetic product used for stabilization and reinforcement in Civil Construction.

Geogrids are classified as a type of geosynthetic because it is an engineered textile manufactured from polypropylene polymers.

However, geogrid differs from many of the other geosynthetics because it is less of a fabric and more of a plastic structured netting.

Geogrid is manufactured through extrusion. The extrusion process is very different than the way geotextile fabrics are weaved. The resulting product is optimized for vertical or lateral applications. This direction of strength determines the classification.

At Colonial, we supply both biaxial and uniaxial geogrids. Although there are a number of Civil Construction applications for uniaxial geogrid, we find that most of our customers need a geosynthetic solution for subgrade stabilization.

When it comes to poor subgrade, we will recommend biaxial geogrid nine times out of ten.

To understand why we recommend biaxial geogrids for so many construction projects, we&#;re going to explain some important facts including:

A Quick Lesson on Geogrid&#;s History

Geosynthetics have stabilized roads and soil for more than 4,500 years.

An Ancient Beginning

In fact, one of the first examples we have of using geosynthetics for subgrade support is the construction of the monumental Egyptian pyramids. Excavations of ancient Egyptian sites revealed the use of man-made mats woven from grass and linen.

In the days of the Pharaohs, these natural fiber mats stabilized haul roads during roadway construction.

The natural fibers rooted into the native soil and created a support system that improved road stability. Using geosynthetics allowed the Egyptians to haul heavy building materials across sandy soils and paved the way for the development of geogrid and geotextiles.

Geogrid&#;s Modern History

Now let&#;s fast forward several millenniums.

Geosynthetics manufacturers began to use advanced technological processes to develop geotextiles that solve the same subgrade support problems the Egyptians faced.

Synthetic fibers are weaved, spun bond and needle punched to produce woven and nonwoven geotextiles.

Then in the late s, Dr. Brian Mercer invented a process that revolutionized the synthetic fabric industry.

In , Dr. Mercer patented an extrusion process called the Netlon process. This new manufacturing method forces molten polypropylene polymers into a plastic net like structure.

This forever changes how nets, fences, packaging products and grids are produced.

Geogrid is born and the Civil Construction industry is forever changed.

Classifying Geogrid

Overtime, geosynthetic manufacturers tweak and perfect the process to adjust the strength of geogrid.

The direction of strength determines the classification of grid as either uniaxial or biaxial. Strength also determines the best application for each respective grid.

Even though we now use grid for subgrade stabilization, the first geogrids were used for tie back applications like retaining walls. Nowadays, you would select a uniaxial geogrid for vertical applications such as tie backs for MSE wall construction.

Uniaxial Geogrid

Uniaxial geogrid has strength in one direction.

Some common applications for these grids include:

• Retaining walls
• Embankments
• MSE Walls

Biaxial Geogrid

Biaxial geogrid has strength in two directions.

These geogrids are a cost-effective solution for subgrade stabilization because they stabilize soft ground through compaction over the entire surface plane.

From here on we are going to concentrate only on biaxial geogrids for stabilization.

If you need further information about uniaxial geogrids our sales team will be happy to provide assistance.

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Properties of Biaxial Geogrid

In order to explain how biaxial geogrid improves the subgrade structure, we are going to define four important testing properties.

Those properties include:

• Aperture
• Junction Efficiency
• Minimum Rib Thickness
• Ultimate Tensile Strength

Test Methods

MD and XMD are the two methods for testing most geogrid properties.

MD stands for the Machine Direction that the polymer moves through while in the extruding machine.

XMD stands for Cross Machine Direction, which is perpendicular to the machine direction.

Because biaxial geogrid must support weight across the entire plane, it is important for it perform well in both the in-plane of axis and cross plane of axis. In other words, in both latitudinal and longitudinal directions.

Aperture

Aperture is one of geogrid&#;s defining properties. The geogrid&#;s aperture is the opening size of its net-like voids.

The size of the aperture determines how introduced aggregates (soil, stone or sand) will interlock, strike through or slide through the voids in the geogrid.

Junction Efficiency

Junction Efficiency is another important property. This property demonstrates how strong the geogrid is at the cross section of its ribs. This cross section is also known as the node.

Junction strength is tested by the GRI GG2 Test Method, which is an industry standard testing method. During the test, geogrid is pulled at its nodes to determine its ultimate tensile or breaking strength.

Grid&#;s Junction Efficiency is expressed as a ratio of junction strength to strength of the rib. The resulting number is expressed as a percentage.

Minimum Rib Thickness

Minimum Rib Thickness is a distinguishing index property. This property tests for exactly what it sounds: the thickness of the geogrid&#;s ribs.

Let&#;s compare two biaxial Geogrids: TLG-11 and TLG-12

TLG-12 clearly has a thicker rib than the TLG-11. Logically, a thicker rib would be able to sustain a heavier load than a thinner rib. The results for Tensile Strength at 2% Strain, Tensile Strength at 5% Strain, and Ultimate Tensile Strength all test higher for TLG-12 than TLG-11.

Although you can draw this general conclusion, there are many other factors to consider when selecting the best geogrid for your site. Anticipated load, the quality of the subgrade and the type of aggregate are all important considerations that will affect the geogrid&#;s performance.

Ultimate Tensile Strength

Lastly, let&#;s look at Ultimate Tensile Strength. This property is tested according to ASTM-D and determines the geogrids resistance to elongation when subjected to a load transfer.

Let&#;s compare TLG-11 to TLG-12 again.

TLG-12 tests higher for Ultimate Tensile Strength for Machine Direction and Cross Machine Direction.

From these test results, you can generally conclude that TLG-12 has a higher load capacity threshold than TLG-11 and thus can handle greater strain before the subgrade is compromised.

How does Biaxial Geogrid Stabilize the Subgrade?

Now let&#;s tie it all together.

If soil is too soft, it will bend and buckle when a heavy load is added. Geogrid stabilizes the soil by confining the compacted aggregate in its apertures. The apertures also allow aggregate to strike through the grid and interlock with the soils below. This increases the soil&#;s tension.

When a heavy load is introduced to the subgrade, the geogrid spreads that load of pressure over the whole surface area of the grid. Because biaxial geogrid has strength in both directions, the load is evenly supported across the surface. As the load is introduced, the layers of aggregate and grid are further compacted and the subgrade is reinforced.

Combining Geogrid and Geotextiles

Native soil conditions and the type of aggregate on site are two extremely important considerations that can greatly affect geogrid&#;s ability to stabilize a roadway.

If the native soil is very fine or has a high moisture content, the site may experience &#;pumping.&#;

This means multiple soil types are mixing and weakening the soil&#;s Core Bearing Ratio (CBR). When there is poor soil tension, a load transfer displaces the surrounding weak soils to nearby subgrade, resulting in ruts and low points.

If your site is experiencing pumping, you may need more than geogrid to reinforce the subgrade.

Geogrid provides subgrade support when compacted with the correct aggregate but when very fine and moist soils slide through the grid&#;s apertures, bearing capacity and compaction may be compromised.

To solve this issue, install a nonwoven geotextile fabric below the geogrid.

The nonwoven fabric filters the soil fines and separates them from the geogrid and aggregate base. As a result, the subgrade is further compacted and hydrostatic pressure is reduced.

Although you can install the geotextile fabric and grid separately, some manufacturers produce biaxial geocomposites. These composites have a biaxial geogrid thermally bonded to a nonwoven geotextile fabric. Geocomposites can be appealing because it makes installation of grid and geotextile fabric a one step process.

Choosing the right geogrid can be tricky

Geogrid is an integral product for Civil Construction and one that has evolved quite a bit over the years. As a result, there are a lot of options out there.

If you&#;re not sure what grid your site requires, let us help.

We&#;ll review the project plans or make a site visit to make sure you get the product you need.

Want more information on Biaxial Polypropylene Geogrid? Feel free to contact us.