1. 1 New Innovations in Road Seal Treatments 19 th South Australian Local Government Road & Works Conference BAROSSA – 25 th & 26 th August 2011 Warren Carter – National Technical Manager

2. Introduction What are you trying to seal? –Base (granular/stabilised) –Existing seal –Asphalt (new/old) –Concrete –Bridge deck (wood/concrete/steel) What additional properties are desired? –Noise reduction –Water shedding –Friction

3. 3 Primes and Spray Seals Innovations Emulsion Primes Emulsion Precoats Binders –Bitumen (local, imported) –Polymer modified (SBS, PBD, crumbed, etc) –Emulsions (HBCE, PME) Aggregates –Recycled? Sprayers –Variable application spray bars

4. Primes and Spray Seals Innovations cont’d BRP Road Patch Maintenance products

5. Sealing Asphalt Crack sealing Spray seal Fog coat –Seals surface pores and cracks Rejuvenators –Seals surface pores and cracks –May soften the existing surface binder (precautions?) High skid resistant surfacings –Calcined bauxite Delineating surfacings

6. Sealing Asphalt cont’d Asphalt overlays –AC –OG –SMA –UTA (proprietary products – smoothness, noise, skid resistance, water shedding, etc)

7. Sealing Asphalt cont’d Microsurfacing/slurry Mats, ready roll pavements

8. Sealing Concrete and Bridge Decks Prime application is critical –QDP Treatments –Spray seals, asphalt, etc Diamond grinding

9. Asphalt Innovations - Sustainability RAP Warm mix asphalt

10. Questions?