PU Binder for Resin-Bound Permeable Paving
Polyurethane binder (PU-50C) for resin-bound permeable “stone glue” paving — mix with decorative aggregate and trowel to a porous, draining, eco-friendly surface for sidewalks, cycle paths, landscapes and plazas.
A binder built for permeable stone paving
PUGLUE PU-50C is a two-component polyurethane binder (A : B = 2 : 1) made for resin-bound permeable paving. It coats decorative aggregate evenly with high adhesion and bond strength, cures at room temperature to an insoluble, non-melting film, and resists strong impact without cracking the surface. The finished paving is permeable — it drains rainwater, recharges groundwater, reduces glare, absorbs noise and dust, and helps cool the urban heat-island. Tensile strength ≥15 MPa, tear strength ≥50 N/mm, hardness 70±3 Shore D, with water and cold resistance.
Why Resin-Bound Permeable Paving
One PU binder turns decorative aggregate into a durable, draining, beautiful surface.
Permeable & eco
- Drains rainwater, no puddles
- Recharges groundwater & soil
- Cools the urban heat-island
- Absorbs noise, reduces dust
Safe & comfortable
- No night-time glare
- Even, comfortable walking surface
- Slip- and impact-resistant
Strong & durable
- Tensile strength ≥15 MPa
- Tear strength ≥50 N/mm
- Water & cold resistant
- Insoluble, non-melting once cured
Permeable Paving Binders — and Which to Choose
Resin-bound paving uses several binders. PUGLUE’s two-component PU-50C is the choice for strong, durable, permeable aggregate surfaces.
| Binder type | Components | Best for | Notes |
|---|---|---|---|
| Two-component PU (PU-50C) | A + B, 2:1 | Resin-bound permeable stone paving | High bond, ≥15 MPa tensile, impact-resistant, room-temp cure. PUGLUE core product. |
| 1K moisture-cure PU | Single-component | DIY / small resin-bound jobs | Simpler but cure depends on humidity; lower control on large areas. |
| Epoxy | A + B | Bonded (non-permeable) resin pavements | Yellows under UV; more rigid and less impact-tolerant outdoors. |
| PU-50M (broadcast) | A + B | Colored anti-slip pavement | For broadcast-aggregate anti-slip surfacing — see colored anti-slip pavement. |
Where PUGLUE Permeable Paving Binder Is Used
From municipal sidewalks to garden landscapes, PU-50C binds decorative aggregate into durable permeable surfaces.
Engineered Performance
Strong, permeable and weatherproof — the profile resin-bound paving requires.
High strength
Tensile strength ≥15 MPa and tear strength ≥50 N/mm; hardness 70±3 Shore D.
Impact resistant
Withstands strong impact without cracking the paving; cured film is insoluble and non-melting.
Permeable & eco
Open-pore surface drains water, recharges groundwater and cools the urban heat-island.
Water & cold resistant
Cures at room temperature; resists water and cold for long outdoor service.
How to Lay Resin-Bound Paving
A two-component 2:1 trowel-applied system.
Prepare the base
Clean the base free of oil and dust and repair any damaged areas. Do not apply on a damp surface.
Mix A : B = 2 : 1
Mix the binder at A : B = 2 : 1 by weight (not by volume) until uniform, then blend with the aggregate.
Spread & compact
Trowel the resin-bound aggregate level and compact it evenly.
Cure
Initial cure in ~3 h, full cure ~24 h. Do not add thinner.
Technical Parameters
Two-component PU-50C — representative values.
| Property | Value |
|---|---|
| Type | PU-50C two-component polyurethane |
| Appearance | Light-yellow liquid |
| Viscosity | 3500 ± 100 mPa·s |
| Mixing ratio | A : B = 2 : 1 (by weight) |
| Solid content | 85% |
| Density | 1.00 ± 0.10 g/cm³ |
| Hardness | 70 ± 3 Shore D |
| Tensile strength | ≥15 MPa |
| Tear strength | ≥50 N/mm |
| Pot life | ≥15 min (100 g) |
| Cure (room temp) | Initial ~3 h; full ~24 h |
| Packaging | A: 14 kg iron drum | B: 7 kg plastic drum (2:1) |
Mix A : B = 2 : 1 by weight (not volume). Do not apply on damp surfaces or add thinner. Store at ambient temperature, away from direct sunlight.
A Manufacturer You Can Build On
A dedicated polyurethane adhesive manufacturer — not a trading reseller — supplying paving and landscape contractors worldwide since 2010.
Consistent, tested quality
In-house QC on every lot so viscosity, hardness and strength stay repeatable.
Full technical support
TDS, free trial samples and engineer support for your aggregate and climate.
OEM & private label
Manufacturer-direct pricing, your branding and stable supply — no middleman.
Packaging, Samples & OEM Supply
Manufacturer-direct supply built around paving-contractor procurement.
Packaging
Component A in 14 kg iron drums, component B in 7 kg plastic drums (2:1 set).
Free trial sample
Trial samples with full TDS so you can validate bond and finish before committing.
OEM / private label
Your brand, your spec — manufacturer-friendly MOQ and repeatable batches.
Global export
Export-ready documentation and logistics support.
Frequently Asked Questions
Resin-bound permeable paving binder (PU-50C) — technical answers.
What binder is used for resin-bound permeable paving?
A two-component polyurethane binder — PUGLUE PU-50C (A : B = 2 : 1). It coats decorative aggregate, is troweled level and compacted, and cures to a strong, permeable surface.
What is the mixing ratio?
A : B = 2 : 1 by weight (not by volume). Mix until uniform, then blend with the aggregate and lay within the pot life.
How strong and hard is the cured paving?
Tensile strength ≥15 MPa, tear strength ≥50 N/mm and hardness 70±3 Shore D — it withstands strong impact without cracking.
Is the paving really permeable?
Yes — the open-pore resin-bound structure drains rainwater, recharges groundwater and soil, absorbs noise and dust, and helps cool the urban heat-island.
What is the pot life and cure time?
Pot life is ≥15 minutes (per 100 g); initial cure in about 3 hours and full cure about 24 hours at room temperature.
How do I apply it?
Clean and repair the base, mix A : B = 2 : 1, blend with aggregate, trowel level and compact, then let cure. Do not apply on damp surfaces or add thinner.
What is the packaging?
Component A in 14 kg iron drums and component B in 7 kg plastic drums (a 2:1 set). Store at ambient temperature, away from sunlight.
How is it different from colored anti-slip pavement?
This PU-50C is for resin-bound permeable paving (aggregate mixed and troweled). For broadcast-aggregate colored anti-slip surfacing use PU-50M — see our colored anti-slip pavement page.
Do you offer samples, TDS, MOQ and OEM?
Yes. We provide a full TDS, free samples, and OEM / private-label supply with manufacturer-friendly MOQs. Contact us for a quote.
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