TenCate TM Mirafi ® Geosynthetics

1. TenCateTM Mirafi® Geosynthetics Bruce A Lacina, P.E. Roadway Reinforcement Technical Manager

2. TenCateTM is a 300+ year old company and the global leader in geosynthetics. We develop and produce materials that increase performance, reduce costs and enable people to achieve what was once unachievable. Our goal is to contribute significantly to progress in the industries in which we work. TenCateTM Geosynthetics make the difference. Geosynthetics Industrial Fabrics Synthetic Grass Protective & Outdoor Fabrics Aerospace Composites Armor Composites

3. Mirafi® RSi-Series Woven Geotextiles The 1stIntegrated Geosynthetic for Base Reinforcement and Subgrade Stabilization

4. Mirafi® RSi-Series Woven Geotextiles Integration (hence the “i”) of 4 Key Properties for Base Reinforcement and Subgrade Stabilization - High Modulus especially in CMD - High Water Flow/Permittivity - Separation (US sieve #40) - High Interaction Coefficient (Confinement) - Plus added benefit of Product Identification

5. Project Case Study:Mirafi®RS580i – Ankeny Centennial High School Access Road

6. H₂Ri

7. Patented 4DG Yarn in H₂Ri

9. Mirafi® H₂Ri Integration of 5 Key Properties for Base Reinforcement and Subgrade Stabilization Plus Wicking Capability - High Tensile Modulus (stiffness) especially in CMD - High Water Flow/Permittivity - Excellent Separation - High Interaction Coefficient (Confinement) - Plus added benefit of Product Identification

10. Product Identification

11. Questions about Mirafi® Geosynthetics? Contact your TenCateTM representative: 800-685-9990 or www.mirafi.com

12. 2013 Mid-Continent Transportation Research Symposium Kansas State University Investigation of Bearing Capacity of Geotextile-Reinforced Paved Roads • MiladSaghebfar • Bruce Lacina • MustaqueHossain

13. Outline • Background • Test sections • Instrument installation • Monitoring • Conclusions

14. Rutting Under Wheel Loading

15. Kansas State University Accelerated Pavement Testing (APT) Facility • Department of Civil Engineering and the Kansas Department of Transportation (KDOT) developed the APT facility at 1997. • The 18th full-scale pavement test is now being completed

16. Test sections *SR-12.5A- 12.5-mm Superpave mixture with RAP

17. 10’ 10’ 10’ 10’ Section G Section E 16’ 16’ Section H Section F Test Section Layout Middle Pit ↑ N South Pit

18. Test Sections 6” HMA 6” HMA 6” HMA 4” HMA 10” AB3 12” AB3 12” AB3 12” AB3

19. Pressure cells • Geokon 3500 pressure cells • 2 per section

20. Geotextile Strain Gages • Vishay Micro-Measurement • 6 per product

21. H-bar Strain Gages • Tokyo Sokki Kenkyujo Co. • 6 per section

22. Construction (Subgrade CBR = 2.6; E=4,700 psi)

23. APT Machine

24. Loading and Monitoring • 18-kip load • 90 psi tire pressure • Truncated normal distribution • Pressure cell, theromcouple and strain readings taken periodically • Transverse profile and rut depth measurments periodically

25. APT Machine Wander

26. Monitoring

27. Rut depth

28. Pressure on Subgrade

29. Longitudinal strains bottom of HMA

30. Transverse strains bottom of HMA

31. Strain in geotextiles

32. Conclusions • Reinforced sections (sections F and H) performed better than the control in terms of rutting and pressure on subgrade. • Pressure and strains in the reinforced sections did not change much until about 100,000 wheels passes. After that, geotextiles was mobilized and these parameters changed considerably.

33. Thank you