Paving
High-Modulus Asphalt with Gilsonite
High-modulus asphalt (often called EME, from the French enrobé à module élevé) uses hard binders to create very…
Knowledge Center
Practical, expert articles on gilsonite in drilling fluids, asphalt, foundry, inks, paints, coatings and waterproofing.
Paving
Gilsonite in Base and Binder Courses
Much of the rutting in heavy-duty pavements occurs in the lower asphalt layers, not just the surface. Modifying…
Paving
Gilsonite in Stone Mastic Asphalt (SMA)
Stone mastic asphalt (SMA) uses a coarse stone skeleton filled with a rich mastic of binder, filler and…
Paving
Gilsonite Asphalt for Intersections and Bus Lanes
Intersections and bus lanes are where pavements fail first. Braking, accelerating and stopped heavy vehicles cause rutting and…
Paving
Compaction Tips for Gilsonite-Modified Asphalt
Good compaction is critical for any asphalt, and gilsonite-modified mixes are no exception. Gilsonite increases binder viscosity. Mixes…
Paving
Gilsonite in Road Paving: An Overview for Contractors
Contractors face rising traffic loads, hotter summers and tight budgets. Gilsonite is a practical tool to build pavements…
Asphalt
Testing Gilsonite-Modified Asphalt Binder in the Lab
Before using gilsonite on a paving project, the modified binder should be tested to confirm the target properties.…
Asphalt
Gilsonite in Asphalt: Frequently Asked Questions
How much gilsonite should I add? Usually 4–12% by weight of binder, or 0.3–0.8% of the total mix.…
Asphalt
Cost–Benefit of Gilsonite-Modified Asphalt
Road agencies and contractors want to know: is gilsonite worth the extra cost? If a modified pavement lasts…
Asphalt
Gilsonite in Mastic Asphalt and Guss Asphalt
Mastic asphalt (also called guss asphalt) is a dense, void-free mix poured hot and used on bridge decks,…
Asphalt
Gilsonite, Adhesion and Moisture Damage in Asphalt
Stripping — the loss of bond between binder and aggregate in the presence of water — causes ravelling…
Asphalt
Handling Gilsonite at the Asphalt Plant
Adding gilsonite at the plant is simple if a few practical steps are followed. Allow a few extra…
Our Products
| Product | Particle size | Softening point (R&B) | Typical dosage | |
|---|---|---|---|---|
| Gilsonite Lump | 0 – 50 mm (custom) | 150 – 220 °C | Depends on application. | Spec · MSDS · COA |
| Gilsonite Granular | 1 – 5 mm | 150 – 200 °C | Asphalt: 4–12 % by weight of binder. | Spec · MSDS · COA |
| Gilsonite Powder | 100 – 200 mesh | 150 – 220 °C | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | Spec · MSDS · COA |
| Micronized Gilsonite | 300 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil. | Spec · MSDS · COA |
| Drilling Fluid Grade Gilsonite | 75 – 200 µm | 160 – 220 °C (grades) | 2 – 8 lb/bbl | Spec · MSDS · COA |
| Sulphonated Asphalt | — | — | 2 – 6 lb/bbl | Spec · MSDS · COA |
| Cementing Grade Gilsonite | 75 – 200 µm | 160 – 220 °C | 5 – 15 % BWOC | Spec · MSDS · COA |
| Asphalt Modifier Grade Gilsonite | Powder ≤ 200 mesh / granular 1–5 mm | 150 – 200 °C | 4 – 12 % by weight of binder | Spec · MSDS · COA |
| Foundry Grade Gilsonite | 100 – 300 mesh | 150 – 200 °C | 0.3 – 1.0 % (iron) | Spec · MSDS · COA |
| Ink & Paint Grade Gilsonite | 200 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil | Spec · MSDS · COA |
| Coating & Waterproofing Grade Gilsonite | ≤ 200 mesh | 150 – 200 °C | 5 – 25 % of compound | Spec · MSDS · COA |
| Sealer & Filler Grade Gilsonite | ≤ 200 mesh | 150 – 180 °C | Sealer: 15 – 35 % | Spec · MSDS · COA |