Parameters：

Loading device

Hammer：10.0kg (optional 15kg, 20kg)

Maximum drop height： 700mm

Maximum impact loading：20kN

Pulse loading shape: Half sine

Wave pulse loading duration：15~30ms

Material: galvanized alloy steel

Weight：15kg (including 10 kg hammer)

Height：1100mm

Loading board

Diameter：300mm (optional 200, 450mm)

Thickness：20mm

Material：galvanized alloy steel

Weight：15kg

Electronic Settlement (wireless control)

Loading force measurement range：25 kN

Loading force measurement accuracy：<2%

Displacement measurement range：2mm

Displacement measurement accuracy：< 1%

Measurement time per point：<1 minute

Sensors for displacement measuring：3pcs  (expandable)

Data storage capacity：2000 group test data

Power supply：Lithium battery

Continuous working time：12 hours

Working environment temperature range：-10 ~ 40°C

Working environment humidity range：not more than 85% RH (no condensation)

The Light Weight Deflectometer (LWD) is a versatile and reliable tool used for measuring the deflection and bearing capacity of soil and granular materials. This device is equipped with a loading device that includes a hammer with a weight of 10.0kg, with optional weights of 15kg and 20kg available. The maximum drop height of the hammer is 700mm, allowing for precise and consistent impact loading.

The LWD is capable of delivering a maximum impact loading of 20kN, ensuring accurate and consistent results. The pulse loading shape is half sine, providing a controlled and uniform loading profile. The wave pulse loading duration ranges from 15 to 30ms, allowing for flexibility in testing different materials and soil conditions.

Constructed from durable and high-quality materials, the Light Weight Deflectometer is designed to withstand rigorous field conditions and provide reliable and accurate measurements. With its advanced features and precise loading capabilities, the LWD is an essential tool for geotechnical engineers, construction professionals, and researchers looking to assess the strength and stability of soil and granular materials.

Main functions：

Rapid test subgrade reaction coefficient  K value.

Rapid test subgrade elastic modulus E value.

Quickly evaluate joint transfer capacity levels.

Display waveform of loading & displacement.

Loading board wireless connect with smart mobile phone (via WiFi) for data transfer, with blue tooth printer.

 

The detail application range:

Asphalt pavement, railway subbase and subgrades and earthwork construction projects.

Ditch soil quality inspection.

Construction cushion quality inspection.

Pile hole, pit quality inspection.

Deformation modulus detection of building foundation frame.