This document discusses how non-destructive testing can help prolong the life of aging infrastructure like highways. It describes the highway design and repair processes and the types of non-destructive tests used in evaluating highways, including falling weight deflectometer testing and ground penetrating radar. The document also outlines guidelines for determining the appropriate repair method based on load transfer efficiency test results and considers how non-destructive testing may be applied at the construction level and help the future of highway repair.

1. Can Non-destructive Testing Prolong The Life of an Aging Infrastructure? Sasha Gollish December 3 rd 2008

6. The Highway Design Process

7. The Repair Method

8. The Evaluation Process

9. Typical Structural Detail of Pre-Cast Slab

10. Non-Destructive Testing at the Construction Level

11. Falling Weight Deflectometer Testing

12. MTO Guidelines with the FWD Test Load Transfer Efficiency Low (Crack < 13mm) Medium (Crack 13-25mm) High (Crack >25mm) Good (>70%) JPCP - Consider Other Data to Determine Repair JRCP & Joints – Do Nothing JPCP – Full Depth JRCP & Joints – Consider Other Data to Determine Repair All – Full Depth Repair Fair (50-70%) JPCP – Full Depth JRCP & Joints – Consider Other Data to Determine Repair All – Full Depth Repair All – Full Depth Repair Poor (< 50%) All – Full Depth Repair All – Full Depth Repair All – Full Depth Repair

13. Ground Penetrating Radar

15. The Future of Pre-Cast Panels

16. Thank you Questions?