Biaxial Geogrids
Soil reinforcement for road stabilization
Biaxial geogrids are used mostly for reinforcement purposes in soil stabilization applications their symmetric-multiaxial structure can increase the bearing capacity of the existing subsoil providing the necessary strength and confinement effect. The tensile strength and the geometry of these geogrids are normally symmetric with tensile strengths from 20 to 300 (or even more) kN/m but three or more axis versions are available; also the polymer and the opening shapes can vary according to the tensile requirements and the fill properties.
Maccaferri’s range includes different families of products:
MacGrid EG
Extruded polypropylene geogrids with a symmetric tensile strength of up to 50 kN/m; successfully used in single or multiple layers for many decades in soil stabilization applications is an essential component of many combo-solving solutions.
MacGrid EG-T
Again an extruded polypropylene geogrid but characterized by a triangular shape to have a multi-axial behaviour. These materials are used – as the MG EG – in the same type of applications and are supposed to be an evolution of the biaxial ones.
MacGrid WG-S
High tenacity PET knitted-weaved coated geogrids are also available and used in these types of applications especially when the tensile strength requested exceeds the capacity offered by the extruded ranges; these products are available up to standard symmetric strength of 300kN/m but – on demand – can be proposed up to 1000 kN/m.
Success Stories
Built, not just drawn
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A DURABLE WORKING PLATFORM FOR THE CEBU-CORDOVA LINK EXPRESSWAY
Cebu-Cordova Link Expressway, also known as the Cebu-Cordova Bridge, is a toll bridge expressway that will link mainland Cebu in Cebu City to Mactan Island through the municipality of Cordova. It is currently one of the largest infrastructure projects in the country with a span of 8. 5 kilometers and a navigational clearance of 51 meters. The bridge will have two lanes in each direction to serve approximately 50,000 vehicles daily and will allow large sea vessels to pass underneath. Having a safe and durable working platform that will support heavy straddle carriers during the launching of the bridge girders in the causeway precast yard is critical to the success of the project. Comprehensive calculations and recommendations were needed to address the issue of insufficient bearing resistance in some areas of the causeway precast yard.
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MICT BERTH 8 EXPANSION PHASE 1
Philippines
The Manila International Container Terminal (MICT) Berth 8 Phase 1 Project is constructed on an existing reclaimed area. This area is further developed as part of a proposed expansion plan to increase MICT's annual container capacity, in terms of Twenty-foot Equivalent Units (TEUs). Located adjacent to Berth 7, the reclaimed land needs to be prepared for construction and safe operation by addressing potential geohazards, such as liquefaction and settlements.
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NEW MANILA INTERNATIONAL AIRPORT PORT CONSTRUCTION
Philippines
The Philippines is poised for a significant leap in its air travel infrastructure with the New Manila International Airport project. This ambitious endeavor envisioned as a world-class facility, will be constructed in phases to ultimately handle a staggering 100 million passengers annually. A critical aspect of this project involves the development of wharves on reclaimed land to provide convenient access to bring in all the equipment and supplies needed to construct the airport. However, building on reclaimed land presents unique challenges, particularly regarding ground stability. Geohazards like liquefaction, a phenomenon where water-saturated soil loses strength during earthquakes, and settlement, the gradual sinking of the ground, pose significant risks to the long-term viability of the wharves and the overall airport structure.
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What we can do with
Biaxial Geogrids
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