Falling weight deflectometer

CIVIL TECH has a  (Vehicle mounted falling weight deflectometer) VMFWD (Vehicle mounted falling weight deflectometer). This unit is fitted with a sensor-based odometer for linear reference. The odometer is capable of recording the chainage to an accuracy of 0.1 meter. These units are a non- destructive pavement testing device which provides accurate data on the response of the pavement (specifically the surface deflection bowl) to dynamic loads by simulating actual wheel loads in both response and duration. This allows more accurate and rapid measurement of pavement deflection under load than traditional methods.

FWD is Non-destructive test equipment for pavements. It imparts a dynamic load to a pavement structure Simulates a moving wheel load. FWD Provides fast, non-destructive evaluation of pavements. It is safe operating on project site as it is compatible and can be operated inside vehicle and one test takes few seconds, so it is without much disturbance to moving traffic. FWD Provides information on condition of underlying pavement layers. 

We can back calculate the moduli values of the different pavement layers (by matching the measured and computed bowl ordinates using software) and these moduli values can be used to compute the stresses in different pavement layers using any pavement analysis software. We can estimate the structural inadequacy and calculate the residual life of pavements with FWD.

• The scope of work is to prepare a Report by analyzing the data collected through Falling Weight Defletometer Vehicle.
• Assess the service life of the pavement in terms of million standard axles (MSA).
• Calculation of require overlay thickness.
• Pavement Strength.
• FWD(Falling Weight Deflectometer) is one of the most advanced non-destructive structure testing equipment of road surface strength in the world.

Specification

• Conducting F.W.D. Using IRC 115:2014 For Flexible Pavement & IRC 117:2015 For Rigid Pavement.
• Civil Tech has following equipment to collect Structural data of road. E-RAY FWD – 1, No Geophones – 7.
• Transient deflections radially at seven different points.
• Layer moduli (modulus of elasticity) from the basic deflection data and predefined parameters and layer thicknesses specified.
• Modulus of subgrade reaction (k-value) for concrete pavements.
• Efficacy of load transfer between the concrete slabs.
• Overlay requirement.
• Remaining life of the pavement for the traffic levels of the specified load.