Roll of black biaxial geogrid for soil reinforcement and ground stabilization in engineering projects in the Dominican Republic.
Close-up of the weave of a biaxial geogrid, a material with high tensile strength for retaining walls in DR.
Detail of biaxial geogrid placed over geotextile and covered with gravel for pavement optimization in the Dominican Republic.
Deployment of black biaxial geogrid on the terrain for granular base reinforcement in civil works in Santiago, DR.
Roll of black biaxial polypropylene (PP) geogrid for structural soil reinforcement in the Dominican Republic.
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Roll of black biaxial geogrid for soil reinforcement and ground stabilization in engineering projects in the Dominican Republic.Close-up of the weave of a biaxial geogrid, a material with high tensile strength for retaining walls in DR.Detail of biaxial geogrid placed over geotextile and covered with gravel for pavement optimization in the Dominican Republic.Deployment of black biaxial geogrid on the terrain for granular base reinforcement in civil works in Santiago, DR.Roll of black biaxial polypropylene (PP) geogrid for structural soil reinforcement in the Dominican Republic.

Biaxial polypropylene (PP) geogrid

SKU: 561220

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Tensile strength:
Presentation:
Price:
RD$ 99,000.00
RD$ 330.00/m²

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Reinforcing road bases on soft soils where gravel sinks and forms potholes in a few months, stabilizing commercial parking lots with vehicular loads dispersed in multiple directions, and reducing the thickness of expensive aggregate by saving excavation and backfill, requires extruded biaxial geogrid with tensile strength in two directions and calibrated apertures for aggregate interlock. This polypropylene (PP) biaxial geogrid—also called biaxial geogrid, biaxial geogrid or subgrade reinforcement mesh—is manufactured by MOLTEXO from extruded virgin PP and stretched in two directions, available in 20 and 40 kN/m strengths, in 6 m wide and 50 m long rolls, designed for road construction, industrial platforms, commercial parking lots, and temporary access roads during construction.

Key Benefits

  • Bidirectional strength for dispersed loads: stretching in both longitudinal and transverse directions produces a mesh with tensile strength in both directions, ideal for distributing vehicular and pedestrian loads coming from multiple angles onto the pavement.
  • Mechanical interlock with granular aggregates: rigid apertures confine crushed stone and gravel ("interlock"), creating a pseudo-rigid aggregate layer with significantly higher bearing capacity than unbound aggregate, a mechanism that distinguishes an effective geogrid from a decorative plastic grid.
  • Savings on calibrated aggregate: allows for a reduction in base and subbase thickness, depending on soft soil conditions and required project strength, resulting in significant savings on excavation, backfill, and costs in large-scale projects.
  • Chemically inert and durable PP: resists biological degradation, chemical attack from soil acids and alkalis, environmental humidity, and typical Caribbean temperatures, conditions for a service life of decades when buried.
  • Rapid deployment without specialized machinery: manageable roll that is spread over the subgrade with basic equipment, a condition that significantly reduces construction times compared to alternatives with cementation or chemical soil stabilization.

Typical Applications and Uses

  • Reinforcement of bases and subbases for paved roads, unpaved roads, and industrial roadways with continuous traffic.
  • Stabilization of commercial parking lots, marshalling yards, industrial platforms, and heavy equipment parking areas.
  • Shallow foundations on soft, swampy, or low bearing capacity soils in residential and commercial projects.
  • Temporary access roads for construction sites, mining operations, and work areas with inadequate natural soil.

Quality and Durability

An economical biaxial geogrid fails in two ways: the PP is not virgin but low-quality recycled (which causes abrasion and breakage due to interaction with aggregates during spreading and compaction) and the two-directional stretching is deficient with weak nodes (which significantly reduces the actual strength compared to the declared strength). MOLTEXO works with extruded virgin PP and controlled bidirectional stretching, which distinguishes an auditable structural geogrid for construction from a generic plastic grid that appears to reinforce but provides no real bearing capacity.

Also known as: Technical: biaxial geogrid, extruded biaxial geogrid, bi-oriented geogrid, subgrade reinforcement mesh, BX geogrid. In DR and Caribbean: geomalla biaxial, geogrid, malla geogrid, malla estructural para suelos. In other countries: biaxial geogrid (USA), BX geogrid (USA), pavement reinforcement geogrid (USA), geomalla biaxial (LATAM), geogrilla biaxial (LATAM, ES), géogrille biaxiale (FR).
Equivalences

Equivalent to these other-brand references:

20 kN/m (1.4 kip/ft) · Roll 6 m (19.7 ft) wide and 50 m (164 ft) long
Tensar BX1100Tensar SS20NAUE Secugrid 20/20Maccaferri MacGrid EG20SPavco Wavin P-BX 2020LAKA Biaxial Geogrid (family)RBK Builds Geogrids (family)ECOSEA Geogrid (family)
40 kN/m (2.7 kip/ft) · Roll 6 m (19.7 ft) wide and 50 m (164 ft) long
Tensar BX1200Tensar SS30NAUE Secugrid 40/40Maccaferri MacGrid EG40SLAKA Biaxial Geogrid (family)RBK Builds Geogrids (family)ECOSEA Geogrid (family)

Brands and references mentioned belong to their respective owners; cited only for comparison and compatibility.

What's the real difference between a biaxial and a uniaxial geogrid?

A complete functional difference. Biaxial is stretched in two directions (longitudinal and transverse) during manufacturing, which produces balanced strength in both directions: dispersed vehicle loads, platforms with traffic from multiple directions and road bases are its natural application. Uniaxial is stretched only longitudinally, with much higher strength in that direction and low transverse strength: mechanically stabilized earth (MSE) walls and reinforced slopes, where the tensile force runs in one direction perpendicular to the wall, are its application. Using uniaxial in pavement or biaxial in a wall produces structural failures.

Can I lay asphalt or concrete directly on the geogrid?

Not directly on the biaxial grid. This technology works by mechanical interlock with granular aggregates (crushed stone, gravel, quarry stone) that lodge into the apertures and create a layer with improved load-bearing capacity. Asphalt and concrete are monolithic materials with no gradation able to interlock, so they don't deliver the reinforcement mechanism. The correct sequence: leveled subgrade → biaxial geogrid → compacted granular base layer → wearing course (asphalt, concrete or pavement). For reinforcement between asphalt layers themselves, specific asphalt geocomposites are used.

How much aggregate can be saved by using this geogrid?

The savings depend on the specific soil study and structural design, but the typical range documented in technical literature is 30-50% reduction in aggregate-layer thickness vs. unreinforced construction, while keeping or improving load-bearing capacity. On large works (kilometers of road or hectares of platform) those savings translate into thousands of cubic meters less excavation and fill, plus a reduction in truck traffic. For a critical project, calculate the specific savings with soil engineering and check the economic case against geogrid cost.

Is it resistant to water and soil chemicals over decades?

Yes. Polypropylene is chemically inert against humidity, biological attack (fungi, bacteria), organic acids in soil, alkalis typical of calcareous Caribbean soils and most chemicals encountered in earthworks. The structure remains stable buried for decades without losing mechanical strength or structural properties. Critical points to verify for an auditable project: manufacturer certification with declared properties, no prolonged UV exposure before covering (cover within 14-21 days), and chemical compatibility with atypical soils such as those contaminated with hydrocarbons in industrial zones.

What kind of granular fill should be used over the geogrid?

Angular granular material such as crushed stone or quarry gravel, since the particle edges interlock physically with the rigid grid apertures, creating maximum mechanical confinement. Recommended aggregate size: gradation with maximum size approximately equal to the grid aperture and well-graded with enough fines for compaction. Rounded material like washed river gravel and fine sand without fines does not produce effective interlock and significantly reduces system performance. For specific projects, check gradation specs in the soil engineering report.

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Material and construction
Material Polypropylene
Dimensions and format
Aperture dimension (MD/TD) 36 / 38 mm (1.42 / 1.50 in)
Minimum rib thickness (MD/TD) 1.3 / 1.0 mm (0.051 / 0.039 in) — ASTM D1777
Strength and performance
Strain at ultimate strength (MD/TD) 13 / 13 % — ASTM D6637
Junction efficiency (MD/TD) 95 / 95 % — GRI GG2
Aperture stability (MD) 700 N·mm/° (6.19 lbf·in/°) — COE Method
Tensile strength @ 2% strain (MD/TD) 7 / 7 kN/m (480 / 480 lb/ft) — ASTM D6637
Tensile strength @ 5% strain (MD/TD) 14 / 14 kN/m (959 / 959 lb/ft) — ASTM D6637
Ultimate tensile strength (MD/TD) 20 / 20 kN/m (1370 / 1370 lb/ft) — ASTM D6637
Flexural stiffness (MD) 1,090,000 mg·cm (15.1 oz·in) — ASTM D7748
Durability and protection
Minimum carbon black 2 % — ASTM D4218
UV protection Yes (high)
Presentation and packaging
Presentation Roll 6 m (19.7 ft) wide × 50 m (164 ft) long
Standards and certifications
Test methods EN ISO 10319 (tensile strength)
Certificaciones y normas
EN/ISO standards
Roll: Width 26.0 cm (10.24 in)
Roll: Height 26.0 cm (10.24 in)
Roll: Depth 600.0 cm (236.22 in)
Roll: Weight 72.0 kg

Official MOLTEXO warranty

Verified Easy claims with Dodom
What's covered
Extended Dodom warranty of 18 months from delivery, which extends the protection of Law 358-05 (Arts. 66–70), against manufacturing defects in the Biaxial polypropylene (PP) geogrid.
Confirmed defect: replacement or refund of the amount paid.
What's not covered
Any damage or deterioration unrelated to the manufacturing of the Biaxial polypropylene (PP) geogrid, such as damage resulting from use, normal wear and tear, or external causes, including force majeure.
Technical sheet EN User guide EN

Payment & Security