Increasing_Lateral_Friction_Asphaltic_Roads.pptx

Increasing_Lateral_Friction_Asphaltic_Roads

1. Methods to Increase the Lateral Coefficient of Friction of Asphaltic Roads

2. Introduction Tire–pavement interaction and safety Role of lateral friction in curve design

3. Importance Essential for vehicle control and stability Referenced in IRC:38 & IRC:37

4. Factors Affecting Friction Surface texture Speed & temperature Aggregate properties

5. Measurement Methods British Pendulum Number (BPN) SCRIM Locked wheel tester – ASTM E274

6. Standards IRC:SP:130, ASTM E303, AASHTO T242

7. Surface Texture Improvement Microtexture: aggregate polishing resistance Macrotexture: surface roughness treatments

8. High Friction Surface Treatment (HFST) Resin + calcined bauxite application Widely used internationally

9. Use of Waste Materials Steel slag Crumb rubber Plastic waste Fly ash-based modifiers

10. Surface Retexturing & Rejuvenation Sandblasting, grooving, shot blasting

11. Case Studies Indian highways (IRC SP 130) USA FHWA HFST projects UK skid resistance management

12. Conclusion Sustainable solutions can enhance safety Waste-based HFST promising area for research