Recognizing the need for an improved method of measuring the density of thin layer asphalt overlays, Troxler, the world leader in nuclear gauge technology, developed the first true thin layer density gauge, the Troxler Model 4640-B.
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.
With on-site results available in as little as one minute, the Model 4640-B can provide the user with test results when they are needed, not hours after compaction has been completed.
Allen Associates also sell other models of Troxler Density Gauges, notably the 3430 and 3450 models.
Nuclear Surface Gauge operation requires specialised training and safety qualifications.
Allen Associates Radiation Safety Proficiency Courses are designed to enhance understanding of sources of ionizing radiation, their application, safe use and procedures in the case of an incident.
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