KUAB FWD (Falling Weight Deflectometer) is a device capable of delivering dynamic loads to the pavement surface, similar in magnitude and duration to that of a single moving, heavy wheel load. The response of the pavement system is measured in terms of vertical deformation, or deflections, over a given area using deflection sensors.
MAIN PARTS
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car – Toyota Landcruiser
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single axle/ double axle trailer with bump sensors and thermometers for measuring air and road surface temperature
weight 1600 – 1800 kg, lenght 5,2 m x width1,9 m x height 2,5 m
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odometer
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control computer with accessories
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KUAB software for device control and analysis of measured data
MEASUREMENT ON THE ROAD – VIDEO
measurement parameters:
- load range : 12 –50 kN
- load rise time : 23 – 17 msec
- load duration : 60 – 40 msec
- segmented load boards: priemer 300 mm
- bend sensors
- number of seismomoters : 7 pcs
- accuracy : 1 mikrometer
- temperature measuring
- air thermometer
- infrared thermometer for measuring road surface temperature
obtained road characteristics:
- vertical deformation, or deflections
- bearing capacity
Updated: 14.9.2016
Published: 1.12.2010