Evaluation of Trapezoidal Shaped Grooves

Figure 12. Rotary Drum With Trapezoidal-Shaped Groove Blades The grooving process uses a stream of water to cool the blades as they cut through the pavement. As the blades rotate, the machine moves forward slowly in the direction of the groove. A driver steers the machine to keep the groove lane straight. A vacuum system sucks most of the excess water and waste material into a collection tank located on the back of a support truck. Figure 13 shows the cutting of a new groove lane with the trapezoidal setup (machine is moving away in this picture). Some of the water used in the cutting process is visible in the right foreground.

Figure 13. Trapezoidal-Shaped Grooving Using Bridge-Deck Machine

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