Gilsonite Coatings for Concrete and Masonry
Concrete and masonry below ground need protection from water.
Products
- Bituminous dampproofing coatings
- Foundation sealers
- Concrete curing and protective coatings
Benefits
Water resistance, adhesion to porous surfaces and durability.
Uses
- Dampproofing below-ground walls
- Protecting concrete from aggressive soils
- Sealing manholes, culverts and retaining walls
Surface preparation
Remove laitance, dust and oil. Repair voids. Concrete should be cured and dry.
System
| Layer | Purpose |
|---|---|
| Gilsonite primer | Penetration and adhesion |
| Bituminous coating (2 coats) | Barrier |
| Protection board | Mechanical protection |
Benefits
Gilsonite gives good penetration in primers and harder, more durable coatings with low water absorption.
See coating and waterproofing grade and foundation waterproofing.
Recommended product
Coating & Waterproofing Grade Gilsonite
| Property | Typical value | Test method |
|---|---|---|
| Appearance | Black powder | Visual |
| Softening point (R&B) | 150 – 200 °C | ASTM D36 |
| Ash content, max | 5 % | ASTM D3174 |
| Moisture, max | 1 % | ASTM D95 |
| Solubility in TCE, min | 97 % | ASTM D2042 |
| Particle size | ≤ 200 mesh | Sieve |
| Typical dosage | 5 – 25 % of compound | |
| Packing | 25 kg bags palletized; 1 MT jumbo bags. | |
Typical values. The final specification is confirmed in the COA of each shipment.
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