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Cut concrete and asphalt

To cut asphalt or concrete, use a floor saw with a diamond blade, cut wet and go down 2 to 5 cm per pass. The SQ16 PRO (13 HP Honda GX390) cuts up to 130 mm deep with 300 to 450 mm blades and comes with two 400 mm blades. On a public road, sign off the zone before you start.

Also called: floor saw, walk-behind saw, road saw

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Field rules

Do it right the first time

01

Wet-cut whenever you can: it cools the blade, extends its life and kills silica dust (the kind that makes you sick).

02

Depth per pass: 5 cm max. Forcing the full cut in one pass overheats the blade and bogs the engine.

03

Concrete blade for concrete, asphalt blade for asphalt: the diamond bond differs and swapping them eats the blade.

04

Snap a chalk line and follow the saw's guide: a crooked cut can't be straightened later.

The machines for this job

SIMAQ picks

Compare models side by side
SIMAQ PRO
Concrete & asphalt saw SQ16 PRO
SQ16 PRO

Concrete & asphalt saw SQ16 PRO

Straight, deep cuts in slab and roadway.

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Traffic cone

Traffic cone

Worksite marker, stable and reflective.

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Reflective mesh safety vest, orange

Reflective mesh safety vest, orange

Closes and protects the site perimeter.

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Before you buy, learn

Guides for this job

Guide7 min

How do you cut asphalt and concrete? Blade, depth and water

Cutting asphalt and concrete step by step: the right diamond blade, wet cutting, depth in passes and signage. With the SQ16 PRO saw (up to 130 mm).

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Guide6 min

When should you cut concrete control joints, and how deep?

Cut as soon as the slab bears the saw (usually 6–18 h) and at ¼ of the thickness. A depth-by-thickness table, where joints go and how to wet-cut with the SQ16 PRO.

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Guide7 min

What road signaling equipment does a work zone need? The kit by closure type

Channel traffic, warn drivers and protect the crew: which piece of road signaling equipment does each job —cones, drums, posts, tape, mesh, vests, speed bumps— and how to build the kit per closure.

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Control joint at a quarter of the thickness and cutting in passesTwo cross-sections. Top, control joint: a slab of thickness e with a surface cut one quarter of e deep. That cut creates the weak plane and the crack follows the cut line downward. Bottom, cutting in passes: the blade doesn't go in all at once; it goes down in successive passes, 1, 2 and 3, each 2 to 5 centimeters, until the final depth. A water jet wets the blade: wet cutting, which controls the dust. The SIMAQ SQ16 PRO saw cuts up to 130 millimeters deep with 300 to 450 millimeter blades.Control jointe¼ eguided crackCut ¼ of the thickness: the crackfollows the cut, not a random path.Cutting in passes123waterEach pass goes 2–5 cm deeper untilthe final depth. Water on the blade:wet cutting keeps the dust down.SQ16 PRO: cuts up to 130 mm,with a 300–450 mm blade.
Not to scale. Joint at ¼ of the thickness; deep cuts in passes and with water.

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Job: Cut concrete and asphalt

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FAQ

What people ask before buying

How deep does a floor saw cut?

The SQ16 PRO reaches 130 mm (5.1″) with the largest blade. Don't do it in one go: go down 2 to 5 cm per pass until you hit the depth you need.

Which blade do I use for asphalt and which for concrete?

Asphalt → asphalt blade. Concrete → concrete blade. The diamond is bonded differently in each: asphalt is abrasive and quickly wears out a concrete blade. If you cut both on the same job, keep one of each.

Why should you cut with water?

Water cools the blade, extends its life and knocks down silica dust, which damages the lungs. The SQ16 PRO has a 30 L water tank for wet cutting.

Why does the blade overheat or bind?

Almost always from trying to cut full depth in one pass or pushing the saw too fast. Go down 2 to 5 cm per pass, let the blade work at its own pace and don't cut dry.

Do I need signage to cut asphalt on a street?

Yes. Before cutting on a public road, set up the closure: advance warning, a taper with cones or drums, the work zone and the end. Everyone in a reflective vest.

Other jobs

Compact soil and asphaltMix concrete on sitePour and finish slabsVibrate concreteBreak with a hydraulic hammerLight the night shiftDewater and pump floodsWork at heightMove and stack loadsSign off the work zone

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