The Concrete Saw

The concrete saw shown in Figure 61 is used to cut longitudinal and transverse joints in finished concrete pavements. The saw is small and one person can operate it. Once the cut has been started, the machine provides its own tractive power. Use a water spray to flush the saw cuttings from the cutting area and to cool the cutting blade.

Several types of blades are available. The most common blades have either diamond or Carborundum cutting surfaces. The diamond blade is used for cutting hard or old concrete; the Carborundum blade for cutting green concrete (under 30 hours old). Let’s take a closer look at these two blades.