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Trailor-mounted Falling Weight Deflectometer FWD SHRP-LTPP AASHTO R32 FWD

Trailor-mounted Falling Weight Deflectometer FWD SHRP-LTPP AASHTO R32 FWD

Trailor-mounted Falling Weight Deflectometer FWD SHRP-LTPP AASHTO R32 FWD

Product Details:

Place of Origin: China mainland
Brand Name: SRI
Certification: ISO 9001
Model Number: JT-FWD-01

Payment & Shipping Terms:

Minimum Order Quantity: 1set
Price: 40,000-50000USD
Packaging Details: Wooden case
Delivery Time: 25-30 working days
Supply Ability: 20sets/Month
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Detailed Product Description
Standards: SHRP-LTPP AASHTO R32 FWD Functions: Pavement Bearing Capacity Test

Model: JT-FWD-01


SHRP-LTPP AASHTO R32 FWD;JTG 3450-2019;T0953-2008; JTT1125-2017;JJG133-2017



The Falling Weight Deflectometer (FWD for short) is a special equipment used to evaluate the bearing capacity of pavement. It starts the drop weight device through the computer-controlled hydraulic system, so that the drop weight of a certain mass falls freely from a certain height, and the impact force acts on the bearing plate and transmits it to the road surface, thereby imposing a pulse load on the road surface, resulting in instantaneous deformation of the road surface. Sensors at different distances from the measuring point detect the deformation of the surface of the structural layer, and the recording system transmits the signal to the computer, that is, the dynamic deflection and the deflection basin generated under the action of the dynamic load are measured.


Compared with the traditional Beckman beam measurement deflection, the drop-weight deflection is easy to use, fast, safe, labor-saving, simulates the actual situation to apply dynamic loads, and is suitable for long-distance and continuous measurement. After analysis and comparison, the US Federal Highway Administration confirmed that FWD is a better dynamic load assessment equipment for pavement bearing capacity, and selected FWD as an important equipment for pavement strength assessment in the implementation of SHRP plan.


Trailor-mounted Falling Weight Deflectometer FWD SHRP-LTPP AASHTO R32 FWD



Braking device Equipped with inertia brake  
Traction device Standard trailer coupler with 50mm trailer ball  
Signaling device With steering, braking, reversing, width display combination lamps  
GPS function With GPS module (can detect positioning)  
Safety warning coating Equipped with eye-catching safety warning reflective signs  
Engineering lights Equipped with engineering lights  
Hammer lifting method Hydraulic lifting hammer  
Power supply Tractor charging system provided  
Deflection sensor range -3500um~+3500um  
Number of deflection sensors Standard 9, 1-23 optional  
Deflection test accuracy better than 2%  
Deflection resolution 0.1um  
Deflection repeatability The standard deviation of 40 test data at the same point is not more than 3μm  
Maximum load 120/150kN (upgradeable to 300kN)  
Load range 0~120/150kN  
Load accuracy 1%  
Load resolution 0.1kN or 1kPa  
Temperature range -50~100℃  
The temperature measurement accuracy should be 0.5%  
Emergency lifting device Equipped with manual hydraulic lifting device  
Temperature resolution 0.1℃  
DMI measurement accuracy 1%  
DMI resolution 0.1um  
Front distance display Real-time display of measuring point spacing  
Test time per point 15~20s  
Loading disk format 300mm diameter 4-point sector disc  
Laptop Windows7/XP operating system  
Software function

Calculation with Beckman Beam Data Conversion System

Automatically find the best conversion data

Single point deflection distribution statistics

Calculation and data export representing deflection

data normalization

Evaluation of load transfer ability of joints

Evaluation of plate voids and analysis of stiffness composition

Automatically record the position station of each test point

Temperature correction possible

Walking speed 1~140Km/h  
Safety locking mechanism Equipped with safety locking mechanism  
Bearing method Carrier plate automatic locking mechanism  

Contact Details
Serve Real Instruments Co.,Ltd

Contact Person: Mr. Patrick

Tel: 00-86-18014755745

Fax: 86-86-18621861107

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