ECO Pavement System

ECO (Ecology, Conservation and Optimization) Polyurethane Pavement: A 100% polymer
solution engineered for extreme conditions. Delivers rigid yet flexible surfaces with rapid
installation, offering longer-lasting performance where conventional materials fail.

Eco-Efficiency and Performance Gains

A substantial boost in efficiency and performance through high automation, consistent quality, and green technology

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Common Defects in Conventional Steel Deck Paving

Orthotropic steel bridges are common in major infrastructure projects, but their deck pavements often fail prematurely—a longstanding engineering problem worldwide.

Longitudinal/Transverse Cracking
- Complex stress distribution on steel decks, especially stress concentration in negative moment zones
- Reduced flexural tensile performance of pavement materials under high temperatures
- Insufficient fatigue resistance
- Poor low-temperature crack resistance
Rutting
- High temperatures (steel deck exceeding 70°C)
- Repeated heavy-load vehicle traffic
- Inadequate high-temperature stability of pavement materials
Delamination/Shoving
- High temperatures weaken bonding strength between pavement and steel plate.
- Multi-layer structure failure: interlayer bond loss leading to shear damage
- Poor compatibility with substrate
- Overloading

ECO Polyurethane Pavement Technology Schematic

We are the world's first corporate to apply ECO polyurethane in complex environment pavings

Wearing Course
Modified Polyurethane Mixture
Modified Polyurethane Binder
Steel Deck
Steel Box Girder / U-Rib

Wearing Course

High-wear-resistant aggregates with skid resistance (friction coefficient ≥0.7).

Modified Polyurethane Mixture
- Binder: Thermosetting polymer (asphalt-free) with superior toughness, ductility, and tensile strength
- Mixture: Chemical bonds between organic binder and inorganic aggregates via dense gradation design.

Modified Polyurethane Binder
- Bonding strength with steel plate: ≥16MPa
- Forming chemical network structures with mixtures to enhance overall strength

Steel Deck

Top plate of steel deck:

The load-bearing surface layer (14–20mm thick) supporting pavement and vehicles

Shot blasting:

High-speed steel shot treatment to remove rust/oxidation (cleanliness Sa2.5; roughness 50–100μm)

Adverse effects of corrosion due to pavement damage:

Pavement failure: Corrosion reduces bonding, causing spalling.

Environmental exposure: Direct contact with rain, UV, and temperature fluctuations

Structural weakening: Corrosion reduces steel cross-section, compromising load capacity.

Water trapping: Cracks/ruts expose deck to electrochemical corrosion.

Steel Box Girder

Steel Box GirderA closed box-shaped structure composed of steel plates (top plate, bottom plate, web, and diaphragm) to bear bridge loads and maintain stability

Adverse effects of heat accumulation on pavement:
Heat accumulation: Solar radiation-induced internal temperature rise in steel box girders.
Material aging: Prolonged high temperatures accelerate pavement degradation, reducing durability and service life.
Bonding deterioration: High temperatures weaken adhesion between pavement and girder, causing delamination.
U-Rib

U-Rib: A structural component enhancing deck stiffness and transferring loads to primary bridge members.

Adverse effects of negative moment on pavement:
Negative moment: Tensile stress on U-rib's upper edge and compressive stress on lower edge under load
Pavement deformation: Traditional materials' insufficient toughness causes uneven deformation under negative moment, affecting smoothness.
Stress concentration: Negative moment at U-rib top creates localized stress, potentially inducing cracks.

Enduring Innovation

Our breakthroughs in ECO polyurethane pavement technology have won its reputation and recognition from Chinese authourities.

50Patents

Globally recognized patents and innovation awards
10Years of R&D

Continuous development since 2008, we sustained commitment to independent innovation, exploring more possibilities of high performance polyurethane.
3Mm² Cumulative Paving Area

Projects across 10+ Chinese provinces

ECO Polyurethane Pavement Performance

Well performed in strength, temperature stability, corrosion resistance and lifespan,
especially for large steel decks, alpine regions and rapid deployment Our solutions effectively resolves the limitations including poor performance in complex environments, high defect rate in difficult construction, and the use of rigid yet non-ductile binders with low freeze-thaw resistance, high corrosion, and weak interlayer bonding.

Superior Interlayer Bonding

Pull-off strength: ≥6MPa (2–3× than traditional materials); Binder-steel adhesion: ≥16MPa

High-Temperature Stability

Thermosetting material (no melting); Rutting resistance: 23,000 passes/mm at 80°C; Stable mechanical properties at 70°C; Thermal expansion coefficient: 1.1–1.3× than steel

Low-Temperature Crack Resistance

Flexural strength: 28MPa at -10°C; Max flexural strain: 3,545με

Fatigue Resistance and Compatibility

No cracks after 10M fatigue cycles (-10°C to 70°C)

Waterproofing and Corrosion Resistance

Dense gradation; void ratio: <1%; P12 waterproof rating; Chloride ion permeability: <100 coulombs (near-zero), ideal for de-icing salt/coastal areas

Abrasion and Freeze-Thaw Resistance

Wear resistance surpasses concrete; Salt freeze-thaw cycle stability: Split strength ratio: ≥90%; Post-freeze strength: ≥7MPa

Rapid Construction

Our solution eliminates batch plants and meets emergency/zero-closure requirements with Cold-mix mobile mixing (-15°C operable) and traffic-ready in 2 hours (strength ≥25MPa). Our solutions effectively resolve key limitations including remote hot-mixing, long-haul transport, multi-stage workflows, large temporary sites, temperature sensitivity, high energy use/emissions, and discontinuous processes.