AC 20
AC 20 is an asphalt cement graded by its viscosity at 60°C (1600–2400 poise) on the original binder, per AASHTO M226 / ASTM D3381. It balances stiffness and flexibility, which is why it is one of the most widely specified grades for hot-mix asphalt in warm and temperate climates.
Where AC 20 is used
Viscosity grade bitumen is classified by its viscosity at 60°C — the maximum pavement temperature — which predicts rutting performance more reliably than penetration alone.
- 01Hot-mix asphalt wearing and binder courses
- 02National and urban road construction and resurfacing
- 03Road maintenance and overlay programmes
- 04Industrial and commercial paving
Conforms to AASHTO M226 · ASTM D3381
Supplied to AASHTO M226 (Table 1) / ASTM D3381. Tested for viscosity at 60°C and 135°C, penetration, flash point, solubility and thin-film oven residue properties.
Typical specifications — AC 20
| Property | Unit | Min | Max | Test method |
|---|---|---|---|---|
| Viscosity at 60°C | Poise | 1600 | 2400 | ASTM D2171 |
| Kinematic viscosity at 135°C | cSt | 300 | – | ASTM D2170 |
| Penetration at 25°C | 0.1 mm | 60 | – | ASTM D5 |
| Flash point (COC) | °C | 232 | – | ASTM D92 |
| Solubility in trichloroethylene | % | 99.0 | – | ASTM D2042 |
| Tests on residue from thin-film oven test | ||||
| Viscosity at 60°C | Poise | – | 12000 | ASTM D2171 |
| Ductility at 25°C | cm | 50 | – | ASTM D113 |
Typical values based on AASHTO M226 · ASTM D3381. The binding specification for each cargo is the certificate of analysis issued at loading. Custom specifications are available on request.
Storing AC 20
Temperature: Keep paving grades between roughly 140°C and 170°C in working tanks, and store at the lower end for long holds. Avoid repeated heat-up and cool-down cycles.
Tanks: Use insulated, heated steel tanks with a closed vent system. Dedicate a tank to one grade, or clean it fully between grades to avoid cross-contamination.
Safety: Water and hot bitumen must never meet, because it causes violent foaming. Use heat-resistant PPE, and keep a dry, ventilated area with no ignition sources near the vents.
Shelf life: Bitumen hardens slowly under prolonged heat. Rotate stock, avoid holding it at peak temperature, and re-test before use after long storage.
How we ship AC 20
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AC 20: common questions
What is AC 20?+
AC 20 is an asphalt cement graded by its viscosity at 60°C (1600–2400 poise) on the original binder, per AASHTO M226 / ASTM D3381. It balances stiffness and flexibility, which is why it is one of the most widely specified grades for hot-mix asphalt in warm and temperate climates.
What is AC 20 used for?+
AC 20 is mainly used for: hot-mix asphalt wearing and binder courses; national and urban road construction and resurfacing; road maintenance and overlay programmes; industrial and commercial paving.
Which standard does WGV's AC 20 meet?+
Supplied to AASHTO M226 (Table 1) / ASTM D3381. Tested for viscosity at 60°C and 135°C, penetration, flash point, solubility and thin-film oven residue properties.
How is AC 20 shipped?+
WGV Oil Trading ships AC 20 by steel drums, jumbo bags, bitutainer or bulk, on FOB, CIF, CFR or DAP terms. Every cargo is inspected at the load port by SGS, Intertek or an equivalent independent inspector.
How do I get a price for AC 20?+
Send the quantity, destination port, preferred Incoterms and timing through the quote form on this page, by WhatsApp on +34 663 192 105, or by email to sales@wgvoiltrading.com. WGV Oil Trading replies with a written offer the same day. Payment is by documentary LC, SBLC or TT against documents.