Site Preparation (Asphalt)
1. Locate a test site away from other gauges and large
objects that could influence the gauge results. These
items would include work trucks, large concrete barriers
or walls.
2. For coarse, open graded mixtures, fine fill material, such
as Portland cement or fine sand, should be used to fill
the voids, but taking care not to completely cover the
surface of the asphalt. The gauge base should be
resting on the asphalt not the filler.
3. After the gauge has been placed on the test site, rock
the gauge back and forth by pressing on opposite
corners. Minimizing the amount of rock will ensure the
most accurate results achievable in the field.
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