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Light Weight Deflectometer LWD

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TBT Light Weight Deflectometer LWD is a portable version of FWD, with loading cell & geophones, it can be used to test asphalt pavement & railway subbase, the data get from LWD can be used to calculate the strength of multiple pavement layers. TBTLWD-1 is made as per Standard: Chinese Industry Standard JTG E60 - 2008.

  • TBTLWD-1
  • TBTSCIETECH
  • TBTLWD-1

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 duration15~30ms

Material: galvanized alloy steel

Weight15kg (including 10 kg hammer)

Height1100mm

Loading board

Diameter300mm (optional 200, 450mm)

Thickness20mm

Materialgalvanized alloy steel

Weight15kg

Electronic Settlement (wireless control)

Loading force measurement range25 kN

Loading force measurement accuracy<2%

Displacement measurement range2mm

Displacement measurement accuracy< 1%

Measurement time per point<1 minute

Sensors for displacement measuring3pcs  (expandable)

Data storage capacity2000 group test data

Power supplyLithium battery

Continuous working time12 hours

Working environment temperature range-10 ~ 40°C

Working environment humidity rangenot more than 85% RH (no condensation)



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.


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​Tel: +86-25-8472-1577 / 8472-1579
Fax: +86-25-8472-2235
Email: info@tbtscietech.com
Add: Rm. 1001~1002 HuaXia Mansion, No.81 ZhongShan
Rd., NJ 210005 PR China
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