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
- 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
- odometer
- control computer with accessories
- KUAB software for device control and analysis of measured data
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