NUCLEAR GAUGE HAZMAT TRAINING
Standard Method for - Answers - determining the density and moisture content of soils
and aggregate bases through the use of the nuclear equipment.
Summary of Test Method: Density Measurement - Answers - A gamma source is placed
within the material, and the detected radiation intensity is proportional to the material's
density.
Summary of Test Method: Moisture Measurement - Answers - A neutron source is
introduced into the material, and the quantity of fast neutrons detected depends on the
hydrogen content, mainly from water in the material.
Significance and Use - Answers - The test method described is useful as a rapid,
nondestructive method for the in-place determination of the wet density of soils and the
wet density and moisture content of aggregate bases.
Apparatus (equipment) - Answers - Troxler Model Nuclear Gauge, reference standard,
scraper plate, drill rod, drill rod extraction tool. (reference standard is unique to each
gauge)
Test Specimens - Answers - This test is conducted on in-place soils or aggregate base
material.
Positions - Answers - - Safe position
- Back setter position:
- 2" -8":
