Light Weight Deflectometer

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Hall 7 / 7-109

Product description

Exhibitor Profile

Floor Plan

High-precision testing technology for the dynamic plate load test to determine the deformation modulus E_vd

The dynamic plate load test is a rapid test for determining the load-bearing capacity of compacted materials in earthworks, foundation engineering and road construction. It is used to verify the suitability of soils and subsoils (e.g. fill layers) as foundation soil and enables the user to immediately assess the compaction quality of placed layers. And this already during the paving operation.

As a standard test, the test performed with the ZFG Light Weight Deflectometer is used today in all areas of traffic route construction. It does not matter whether soils are compacted by hand-operated rammers and vibratory plates or by mobile road rollers. With a ZFG 3000 or the ZFG 3.1 from ZORN, you are always in a position to check the quality of the compaction work quickly and reliably.

For broadband expansion, we offer the ZORN Mini, which with its narrow load plate and lower height is excellent for testing soil compaction in narrow trenches.

The safe and uniform use of the testing device, which is also often referred to as "drop plate", is regulated in Germany in particular by the Technical Test Specification for Soil and Rock in Road Construction (TP BF-StB) Part B 8.3, in conjunction with the Additional Technical Contract Conditions and Guidelines for Earthworks in Road Construction (ZTV-E StB).

ZORN INSTRUMENTS also operates several calibration stands for the Light Weight Deflectometer. The first calibration stand was developed by us for the Federal Highway Research Institute (BASt) and was the first of its kind to be approved by the technical authority.

More information

ZORN INSTRUMENTS stands for state-of-the-art manufacturing in the field of testing and measuring technology as well as custom manufacturing in the milling and turning sector. We have a wealth of experience spanning 150 years, enabling us to combine technical innovation with many years of refinement. All mechanical components of our Light Weight Deflectometers and further high precise measuring instruments are manufactured entirely in our factory. We are developer, designer and manufacturer.

Our precision technology for road, track, bridge, civil engineering and landscaping construction is durable and reliable, yet easy to use, allowing you to work optimally even under the most difficult conditions.

ZORN in the field

The Light Weight Deflectometer (ZFG) allows fast and reliable testing of the bearing capacity of compacted soils in in-house and/or third-party monitoring. No additional equipment is required for the dynamic plate load test. Testing during ongoing construction site operations as well as in adverse weather conditions is easily and quickly possible.

ZORN in the laboratory

We also offer dynamic variants of well-known laboratory tests for testing the mechanical load capacity of soils and mineral mixtures. In addition to the dynamic ZORN CBR (laboratory) we developed e.g. a modified plate load test with the ZORN LAB for the determination of the dynamic deformation modulus on classical proctor specimens.

ZORN Calibration

Test equipment should work reliably. In order to do so, they must be regularly maintained and calibrated. ZORN INSTRUMENTS is a calibration laboratory recognized by the Federal Highway Research Institute (BASt) for the Light Weight Deflectometer according to test standard TP BF-StB Part B 8.4. On request we also calibrate according to Austrian standard RVS 08.03.04.

What sets us apart?

As the market leader in soil testing with more than 65,000 test instruments sold, we are internationally active - and have been from the very beginning. We put every fiber into the development process, manufacturing and pay special attention to our service.