Light Weight Deflectometer LWD ASTM E2835-11 for Compaction Control from Zorn Instruments

The ZFG 3000 Light Weight Deflectometer (LWD) with GPS is used for compaction control on sub-grades by measuring the modulus, directly in the field, according to ASTM E2835-11 (2015).
Light Weight Deflectometer - Layer by Layer Compaction Control for Compaction in Road, Rail, Tunnels, Runways etc - In-Situ Modulus Stiffness / Modulus Measurement for Base, Sub Base and Subgrade Materials
The Light Weight Deflectometer (LWD) is used to determine the stiffness of unbound materials (subgrade/subsoils and base layers, granular layers & backfilling materials) or partially bound material (e.g. stabilised) during construction or rehabilitation works.
Modulus is the most accurate and independent means for judging deformation (stiffness) and, thus, a material’s level of compaction. By measuring the modulus value, the Light Weight Deflectometer (LWD) provides the direct link between the design specification (design modulus value) and the actual site condition (in-situ modulus value).
It’s repeatable, fast (test is done in 3 minutes) and gives you immediate GPS located results.
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