CC7 North Non-Destructive Testing (NDT) Plan and Data

NDT Testing was divided into three areas: Pre-Traffic Testing; Testing During Trafficking; and Post Traffic Testing.

Pre-Traffic Testing

Prior to the start of traffic testing, the NDT team performed the following tasks:

a.   2D/3D Imaging.  With the use of the NDT Van, collected 2D/3D image data across the entirety of the CC7 test sections from East to West.

Imaging system on NDT van

 

b.   Mobile Profiler.  Took longitudinal profiles using the NDT van mobile profiler.  All profiles were taken at the same time as the 2D/3D imaging.  Locations of longitudinal and transverse profiles are shown in the CC7 NDT Plan below.

Mobile Profiler on NDT van 

 

c.   Joint Groove Profiler.  Took baseline profiles at grooved locations in the transition areas.  The locations are shown in the CC7 NDT Plan below.

Joint Groove Profiler

d.   GPR.  Used the 900MHz GPR antenna (cart type) and mobile GPR utilizing the NDT van.  Locations of longitudinal and transverse GPR paths are shown in the CC7 NDT Plan below.

GPR on front of NDT van

e.   PSPA.  Portable Seismic Pavement Analyzer (PSPA) testing was conducted at all HWD locations.  The locations are shown in the CC7 NDT Plan below. 

PSPA

 

f.    HWD.  After seating loads with the NAPTV were completed, HWD testing was conducted at the locations shown in the CC7 NDT Plan below.  The target loading sequence was: 12,000 lbs., 24,000 lbs., and 36,000 lbs. with an approximate 36,000-lb seating load.  As with the PSPA, baseline HWD readings were taken prior to trafficking.  The deflection data was used for monitoring modulus changes using BAKFAA and the changing support conditions with increasing pass numbers.

HWD

 

g.   ELATextur.  ELATextur readings were taken to monitor abrasion on the asphalt surface at both trafficked and non-trafficked areas as shown in the CC7 NDT Plan below.

ELATextur 

h.   Rail to Rail Profiling.  Profiles were taken across the full width of the CC7 pavement surface at 12 locations shown in the CC7 NDT Plan below.

Rail to Rail Profiler

 

Prior to the start of trafficking, a baseline visual condition survey was performed on the asphalt surface. 

 

To download the Execution of Traffic Test and Evaluation Plan for CC7, click here.

Testing During Trafficking

At the end of each day’s trafficking, a visual survey was performed to record distresses in accordance with ASTM D5340 along with straight edge measurements.  Weekly data collection consisted of ELATexture, HWD, joint and groove profiling, mobile GPR, mobile profiling, PSPA, and 2D/3D imaging.

 

Click here to be taken to the CC7 North Pavement Distress Map page.  

Click here to be taken to the CC7 North Profiler Data/Rut Depths page.

Post Traffic Testing

All NDT tests conducted during trafficking were also completed after the final stage of trafficking.

 

Click here to download the CC7 NDT Plan 

 

See the HWD page in the project database to download the HWD data.

To see the PSPA data, click here

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