Built-in soil layers can easily be tested without load abutment, facilitating quick assessments of test lots even under limited space conditions. The test method is suited to coarse-grain and mixed grain soils with a maximum grain size of 63mm and can be used to determine the dynamic modulus of deformation of soil in the range Evd = 15 to 70 MN/m². The dynamic plate load test performed with the Lightweight deflectometer is used to determine the soil bearing capacity and compaction quality of soils and non-cohesive subbases, as well as for soil improvement applications. 

Applications:

Compaction monitoring in pipe trenches and cable ducts

Testing of pavement bedding

Testing of foundation backfill

Road and railway construction, earth moving

Testing of modulus of deformation in line with soil exploration

Quality assurance in canal construction

Quality inspection in boreholes.

Main Features:

Immediate on-site evaluation of test results

Fast and cost-saving: maximum 2 minutes per measuring point

It can be easily operated and carried by one person only

Testing can be achieved in difficult to reach locations

No vehicle required.

Technical Specifications:

Loading mechanism

Material: zinc coated/hard-chrome plated steel

Maximum impact force: 7.07 kN

Duration of impact: 17 ms

Total weight: 15 kg

Drop weight: 10 kg

Load plate

Material: zinc coated steel

Diameter: 300 x 20 mm

Total weight: 15 kg

Electronic settlement measuring instrument

Settlement measuring range: 0.1 to 2.0 mm ± 0.02 mm

Measuring range: Evd<225 MN/m2

Temperature range: 0 to 40°C

Power supply: 4 x R6 batteries

Dimensions: 210 x 100 x 45 mm

Storage capacity of measured data: 500 series.

Interfaces: USB, Thermal-Printer, GPS, PC software included.