Quick Answer

Use a diamond blade designed for asphalt: laser or HF welded, with a soft bond and wide segments. Asphalt is highly abrasive, so the bond must wear just fast enough to expose fresh diamond — a hard bond will glaze and stop cutting.

Key Features to Look For

• Soft bond: self-sharpens in abrasive asphalt instead of glazing.
• Wide segments: more diamond surface for long, continuous cuts.
• Welded joint: laser or HF welding holds segments under the shock of road cutting.
• Large diameter: floor saws use 350–1200 mm blades for depth and speed.

How to Choose the Right Blade

Situation	Recommended Blade	Why
Asphalt only	Soft-bond asphalt blade	Fast cut, self-sharpening
Asphalt with base concrete	Laser-welded combo blade	Handles both materials
Deep road cuts	Large-diameter blade	Reaches depth, cools well
Utility trenching	Medium soft-bond blade	Balanced speed and life

How to Use It Correctly

• Cut wet where water is available — it extends blade life in abrasive asphalt.
• Let the blade weight do the work; do not push hard.
• Keep the blade in the cut path to avoid side loading.
• Replace when segments wear below the steel core edge.

Frequently Asked Questions

Q: Can a concrete blade cut asphalt?

A: It can for short runs, but it will glaze or wear unevenly. An asphalt blade cuts faster and lasts longer.

Q: Why does my asphalt blade stop cutting?

A>Usually the bond is too hard and the surface glazed. Dress it, or switch to a softer bond for your asphalt type.

Q: Do I need a special blade for asphalt with base concrete?

A>Yes — a laser-welded combination blade handles the transition without losing segments.

Conclusion

Match the bond to the abrasive material: soft bond, welded joint, wide segments. The Concrete and Asphalt Saw Blade (Laser Welded) — JOY-CA-LW handles asphalt and concrete alike, laser-welded for road work.