8-16B, 10-20B and 10-20WB Extend-A-Mat<COMP-BREAK TAGNAME=cp850>©<COMP-RESUME> Screed Caterpillar

The quality of a transverse joint depends on the preparation that was made for the joint surface at the end of the first mat. The edge of the first mat should be vertical so a good bond can be made between the joint surfaces.

When you form a joint surface before the first mat cools. Do not compact the last 1.8 m (6 ft) of the first mat.

Illustration 1	g00296516

When you are ready to make the joint surface, raise the screed and move the paver backward. Stop the paver when the edge of the first mat is 75 to 100 mm (3 to 4 inch) in front of the screed. Lower the screed onto the slats that are thick enough for the compaction of the mat.

With the screed on the first mat, adjust the thickness controls if the thickness controls have been changed. Fill the auger conveyor with asphalt. Start paving.

When you set the thickness controls, you must allow enough material in order to compact the second mat. Adjust the thickness controls in order to achieve the desired mat thickness.