Pavement Preservation and Maintenance Private Roads Maintenance Workshop

Pavement Preservation and Maintenance Private Roads Maintenance Workshop August 18, 2012 ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Pavement Maintenance Types • Preventive (Proactive) – Preserves good condition pavement • Arrest light deterioration • Retard progressive failures • Reduce need for corrective maintenance • Corrective (Reactive) – After deficiency occurs; more expensive • • Load carrying ability Waterproofing (cracks) Surface slope (rutting) Surface roughness ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Pavement Preservation Techniques (for Flexible / Asphalt Pavements) Crack Seal Micro-Surfacing ASPHALT Fog Seal Ultrathin Bonded Wearing Course Slurry Seal Thin HMA Overlay SMOOTH | DURABLE | SAFE | QUIET

Crack Sealing • Routine maintenance • Cleaning & sealing • Prevents intrusion of water & incompressible materials ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Crack Sealing Effective Marginal No Impact Not Appropriate Distress Type Fatigue Cracking Linear or Block Crack. Rutting Raveling Bleeding Roughness Texture Loss Moisture Damage Extent of Problem Low severity High severity For identification of severity of distress: SHRP P 338 Distress Manual ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Surface Treatments • • • Typically used to: Seal cracks Waterproof surface Improve surface texture Rejuvenate surface ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Fog Seal • Seal pavement • Inhibit raveling • Enrich hardened/ oxidized asphalt • Provide delineation with shoulder ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Fog Seal Effective Marginal No Impact Not Appropriate Distress Type Fatigue Cracking Linear or Block Crack. Rutting Raveling Bleeding Roughness Texture Loss Moisture Damage ASPHALT Extent of Problem Low severity High severity SMOOTH | DURABLE | SAFE | QUIET

Slurry Seal • Type I (small aggregate) – Seal surface cracks • Type II (medium aggregate) – Correct raveling/ oxidation • Type III (larger aggregate) – Fill minor surface irregularities and restore surface texture ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Slurry Seal Effective Marginal No Impact Not Appropriate ASPHALT Distress Type Fatigue Cracking Linear or Block Crack. Rutting Raveling Bleeding Roughness Texture Loss Moisture Damage Extent of Problem Low severity High severity SMOOTH | DURABLE | SAFE | QUIET

Micro-Surfacing • Inhibit raveling & surface oxidation • Improve surface texture • Fill ruts/minor surface irregularities • Seal pavement surface ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Micro-Surfacing ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Micro-Surfacing Effective Marginal No Impact Not Appropriate ASPHALT Distress Type Fatigue Cracking Linear or Block Crack. Rutting Raveling Bleeding Roughness Texture Loss Moisture Damage Extent of Problem Low severity High severity SMOOTH | DURABLE | SAFE | QUIET

Ultrathin Bonded Wearing Course • Porous • Firmly bond to existing surface • Seal pavement • Increase surface macro-texture • Address surface distress • Reduce back-spray improving visibility ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Thin Overlay • Improve smoothness and surface texture • Address surface distress • Improve profile, crown, and cross-slope ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Thin Overlay Effective Marginal No Impact Not Appropriate ASPHALT Distress Type Fatigue Cracking Linear or Block Crack. Rutting Raveling Bleeding Roughness Texture Loss Moisture Damage Extent of Problem Low severity High severity SMOOTH | DURABLE | SAFE | QUIET

Benefits of Pavement Preservation The “right” treatment At the “right” time On the “right” project –Extended life or serviceability –Lower life-cycle costs (cost effectiveness) ASPHALT SMOOTH | DURABLE | SAFE | QUIET

Questions? Larry Patrick Executive Director Ok. Asphalt Pavement Assoc. 405 -524 -7675 lpatrick@okhotmix. com ASPHALT SMOOTH | DURABLE | SAFE | QUIET