PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
PaveFWD Falling Weight Deflectometer
- Description:
PaveFWD Falling Weight Deflectometer
- Model:
PaveFWD
- Manufacturer:
PaveTesting
Product Information
  • Description
  • Standard
  • Feature
  • Specification
  • Configuration
  • Software
Description

车载式落锤弯沉仪

PaveTesting Limited has been at the forefront ofdeveloping new technologies for over 10 years. Basedin the UK, we design and manufacture pavement testingequipment to meet the safety standard requirements ofregulators and the commercial requirements of pavedsurface operators worldwide.


A Falling Weight Deflectometer (FWD) is used to measure the vertical deflection response of a surface to an impulse load. Load measurement and deflection sensors record the pavement surface characteristic, which is used to calculate pavement properties such as

• Bearing Capacity

• Layer Thickness

• E Moduli

• Expected Surface Life


PaveFWD, Trailer Mounted, 7-150kN

A standard Falling Weight Deflectometer (Pave FWD-TM) is a trailer mounted non-destructive testing device used to determine the stress/strain parameters of pavements and sub-grades.



PaveFWD, Vehicle Mounted, 7-150kN

A Falling Weight Deflectometer (Pave FWD-VM) is a vehicle mounted nondestructive testing device used to determine the stress/strain parameters of pavements and sub-grades.



Pave HWD / Pave SHWD,Heavy and Super Heavy Trailer Mounted,7-250 + 7-350kN

A Heavy Falling Weight Deflectometer, Pave HWD and the Super Heavy, Pave SHWD are twin axle trailers used for non-destructive testing of stiff bound material as found on Airport Runways and truck car parks.

车载式落锤弯沉仪

A PaveFWD can also be used in determining the actual material used and in what combination to build the pavement surface. It also identifies voids underneath the surface or how two surfaces, typically concrete slabs, are in contact with each other.

Pave View is user-friendly with an automatic self-check of results – data is easily transferred to PC via the USB memory key or by a direct connection.



Applications

The PaveFWD is used on highways, local roads, car parks and airport runwa√Sensors are placed at preset distances from the load plate axis, measuring the deflection of the surface at high resolution.

Complies with ASTM D4694 “Standard Test Method for Deflections with a Falling Weight Type Impulse Load Devices”



A Deflectometer is used for the following applications :

• Pavement rehabilitation and overlay

• PCC joint sealing evaluation

• Pavement management systems

• Load transfer efficiency

• Void detection

• Spring load restrictions

• Utility cuts

• Experimental paving materials

• Project acceptance and evaluation

车载式落锤弯沉仪    车载式落锤弯沉仪

Standard

• JT/T 1125-2017 Industry standard for drop hammer deflectometer

• JTG 3450-2019 Field Testing Regulations for Highway Roadbed and Pavement

• JTG 040-2011 Design Specification for Cement Concrete Pavement of Highways

• JTG FS0/1-2017 Quality Inspection and Evaluation Standards for Highway Engineering

• JTG 5210-2018 Highway Technical Condition Evaluation Standard

• TG 050-2017 Design Specification for Asphalt Pavement of Highways

• MH/T 5024-2009 Technical Specification for Evaluation and Management of Civil Airport Pavement

• ASTM 04694-96

• ASTM 04695-03

• ASTM D7228-06a

• ASTM E1777-96

• ASTM E2835-11 (LWD)

Feature

• A standard PaveFWD system uses 7 deflection sensors thatmeasure the load pulse over 60ms (0.06 of a second)

• The PaveTesting Ltd PaveFWD is capable of measuring up to 23 deflection sensors over 240ms (0.2 of a second), giving greater resolution and increased measuring capability

• A standard test takes less than 30 seconds to perform, starting from when the PaveFWD is stationary and finishing when the load plate is raised in to the locked and secured position. This makes the PaveTesting Ltd Pave FWD the fast deployable PaveFWD available

• In addition to the basic configuration of the PaveTesting Ltd PaveFWD, all machines are fitted as standard with Ambient, Ground and Sub Ground (Asphalt) temperature sensors. The PaveFWD can also be fitted with the following optional features: Up to 3 Camera System, for monitoring the Load Plate and to assist with vehicle positioning; Ground Penetrating Radar system; Global Positioning System

Specification
DescriptionTechnical Specification
Dimensions

3900×1700×1400mm

Weight1500kg
Load characteristics70~150kN ( PaveFWD )

Hammer lifting method: hydraulic hammer lifting

Pulse load waveform: half sine wave

Pulse load rise time: 10~20ms

Pulse load duration: 20~40ms

Load sensor

Accuracy: 2% of full scale

Resolution factor: 0.01kN

Load plate

4-point fan-shaped disk (evenly distributed and loaded)

300mm/450mm/600mm diameter optional

Digital deflection sensor

Standard 7, 1~25 optional

Bending sensor beam lifting and lowering Wan style: hydraulic lifting and lowering

Accuracy: Relative error<2%

Range ± 2200µm, resolution 0.01µm

temperature sensor

Environmental temperature sensor/Road surface temperature sensor/Asphalt layer internal temperature sensor

Accuracy ± 0.5 ℃, resolution 0.01 ℃, range -50~100 ℃

Distance sensorAccuracy of 0.5%, resolution of 0.1m
Test speed30~40s
Towing speed (trailer type)0~120km/h


Configuration

• Drop hammer system

• Quarter load plate

• Locking device

• Controller

• Bending sensor

• Three temperature sensors

• DMI (distance sensor) integrated into software

• Windows PaveFWD software

Accessories/Spare Parts

Optional parts

• Module backcalculation software, used to backcalculate the modulus of pavement structural layers

• Camera system: Two cameras can be configured, integrated into the software, for taking photos of road conditions/surfaces

• GPS system: Global positioning system, data output in the results, used to locate measurement point information on the map

• Front end distance display: The driver can see the distance information of the measuring point

• Trailer type drop hammer generator: There are two types of power supply for trailer type drop hammer: generator power supply and tractor power supply