Diamond Saw Blades for Concrete and Asphalt

For demolition, a laser-welded segmented or turbo diamond blade with undercut protection performs best, since it can cut concrete, rebar, brick, and block without excessive wear. Look for blades with reinforced segments and slanted gullets for efficient debris clearing and heat dissipation during heavy-duty cutting.

Demo saws commonly use blades ranging from 12 inches to 24 inches in diameter, depending on the saw's horsepower and the depth of cut required. Handheld demo saws typically run 12-14 inch blades, while larger walk-behind or ring saws may use 16-24 inch blades for deeper concrete and asphalt cuts.

Wet cutting uses water to cool the blade and suppress dust, extending blade life and improving cut quality, making it ideal for indoor or precision work. Dry cutting is more portable and convenient for outdoor jobsites but generates more heat and dust, requiring intermittent cutting to prevent overheating. Many blades, like laser-welded designs, are rated for both methods.

Bond hardness should match the aggregate hardness of the material being cut: softer bonds are used for harder, more abrasive concrete, while harder bonds suit softer, less abrasive materials like green concrete. Using the wrong bond leads to premature wear or poor cutting speed, so matching bond to material is critical for performance.

Early entry diamond blades are designed for cutting control joints in freshly poured, green concrete shortly after placement, often within hours of the pour. They minimize raveling and spalling compared to conventional blades, and are used with specialized early entry walk-behind saws equipped with a skid plate for shallow, precise joint cutting.

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