What is a Troxler nuclear density gauge?
The Troxler nuclear moisture density gauges are used by many contractors, engineers, and highway departments for compaction control of soil aggregate, concrete, and full depth asphalt. The gauges meet or exceed the ASTM standards D6938, D2950, and C1040.
What does a Troxler test?
The Troxler Models 3430 and 3440 RoadReader™ nuclear moisture/density gauges measure the density and moisture of soil, aggregate, concrete and asphalt materials in the field for quality control purposes.
What does a nuclear Densometer do?
In geotechnical engineering, a nuclear densometer or soil density gauge is a field instrument used to determine the density of a compacted material. The device uses the interaction of gamma radiation with matter to measure density, either through direct transmission or the “backscatter” method.
Are nuclear density gauges safe?
Nuclear gauges use radioactive sources to identify the thickness, density or make up of a wide variety of material or surfaces. These gauges, which are safe to use when the proper safety measures are followed, help people build safe buildings, roads, and make reliable products.
How do you perform a nuclear gauge leak test?
Leak Test Instructions Wipe the yellow label with the wipe disk. Next, turn the gauge on one side and locate the opening through which the source rod would protrude when indexing. Wipe around and into this opening. Complete the sample folder and leak test form (keeping the yellow copy for your records).
How accurate is a nuclear density gauge?
If the gauges were unbiased, the following average levels of accuracy were indicated from the projects tested: Troxler 3450 nuclear gauge (in thin-lift mode): ±4.1 pcf; Pavetracker: ±5.7 pcf; PQI: ±2.6 pcf. All the gauges should be modified to include a slope calibration function for better accuracy.
Are nuclear gauges Safe?
How much radiation does a nuke gauge give off?
For comparison, studies indicate that for every test (shot) that a gauge operator performs, they are exposed to approximately 1.2 µSv.
What’s the safest level of radiation?
Adult: 5,000 Millirems. The current federal occupational limit of exposure per year for an adult (the limit for a worker using radiation) is “as low as reasonably achievable; however, not to exceed 5,000 millirems” above the 300+ millirems of natural sources of radiation and any medical radiation.
How frequently do sealed radioactive sources need to be leak tested?
every two years
A test of every sealed source shall be carried out at least every two years. Where the source is being used beyond the manufacturers recommended working life, leak checks shall be carried out on a more frequent basis.
How does soil density gauge work?
Nuclear density gauges determine soil density by measuring gamma radiation transmission between a probe containing a radioactive Cesium 137 (or other) source and Geiger-Mueller detection sensors in the base of the gauge. Dense soils allow fewer gamma particles to be detected in a given time period.
What is a Troxler gauge used for?
The Troxler nuclear moisture density gauges are used by many contractors, engineers, and highway departments for compaction control of soil aggregate, concrete, and full depth asphalt. The gauges meet or exceed the ASTM standards D6938, D2950, and C1040.
Why choose Troxler?
Since 1958, Troxler has been dedicated to developing, manufacturing and servicing precision quality control and measurement equipment, including nuclear gauges, gyratory compactors, and asphalt ignition ovens | Online Courses Login Store / Website Register Login Tour Products Services Overview Gauge Repair Service On-Site Field Service
What is the Troxler model 4640-b thin layer density gauge?
Designed to measure the density of thin asphalt and concrete layers from 2.5 to 10 cm (1 – 4 inches), the Troxler Model 4640-B Thin Layer Density Gauge accurately measures the overlay density without influence from underlying material. No nomographs or manual corrections are required in order to compute the true density of the overlay.
Who is Troxler Electronic Laboratories?
Troxler Electronic Laboratories > Home Since 1958, Troxler has been dedicated to developing, manufacturing and servicing precision quality control and measurement equipment, including nuclear gauges, gyratory compactors, and asphalt ignition ovens | Online Courses Login Store / Website Register Login Tour Products Services Overview