Geocell Highway

2. Material Specifications

Recommended Infill Materials:

• Crushed stone (20–40mm, angular)

• Cement-treated base (CTB)

• Recycled asphalt pavement (RAP)

3. Construction Methodology

3.1 Subgrade Preparation

✔ Excavate soft spots (replace with select fill)
✔ Compact to 95% Proctor density
✔ Install geotextile separator (if subgrade CBR<5)

3.2 Geocell Deployment

1. Unroll perpendicular to traffic direction

2. Expand cells fully (maintain honeycomb geometry)

3. Anchor with spikes (500mm spacing)

3.3 Base Course Installation

• Lift thickness: 150–200mm

• Compaction: Vibratory roller (4–6 passes)

• Target density: 98% modified Proctor (AASHTO T180)

3.4 Pavement Structure

4. Performance Advantages

5. Quality Control Measures

✔ In-place density testing (nuclear gauge)
✔ Seam integrity checks (peel/shear tests)
✔ Laser profiling (≤5mm elevation tolerance)

6. Applications in Highway Engineering

• Soft soil stabilization (CBR<3)

• Steep embankments (up to 45° slopes)

• Bridge approach slabs

• Permanent frost protection

7. Case Study: I-80 Rehabilitation

• Location: Wyoming, USA (frost-heave zone)

• Solution: 200mm geocell + 150mm CTB

• Results:
  ✓ 60% reduction in seasonal roughness
  ✓ 7-year crack-free performance

Engineering Support Available:
→ Finite element modeling
→ Bearing capacity calculations
→ Construction inspection

(Complies with AASHTO LRFD and FHWA HIF-12-027 guidelines)

Keywords: Geocell road base, Highway stabilization, Pavement reinforcement, Cellular confinement, Mechanically stabilized earth

Contact our geotechnical team for optimized highway designs!