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Western Canadian Experience with New and Innovative Pavement Surfaces

Explore the recent experience and future initiatives of various Canadian cities and provinces with new and innovative pavement surfaces. Learn about the performance, issues, and upcoming projects in different regions.

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Western Canadian Experience with New and Innovative Pavement Surfaces

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  1. Western Canadian Experience with New and Innovative Pavement Surfaces Art Johnston Canadian User Producer Group for Asphalt Charlottetown, Prince Edward Island November, 2006

  2. MANITOBA INFRASTRUCTURE & TRANSPORTATION • RECENT EXPERIENCE • 2005-06 – Using PG 58-34 for all New Construction • Waived Elastic Recovery Requirement in 2006 • 2002-06 – Incremental Increase in Micro-surfacing Program • Other than some bleeding in 2003 Projects, Good Performance • ISSUES • Initially limited Contractor Capability for Micro-surfacing, now better • Suitable Aggregates for Micro-surfacing has been a problem (resulting in increased cost) • FUTURE INIATIVES • Planning for CIR & Surface Treatment for low volume road applications in 2007

  3. CITY OF WINNIPEG • RECENT EXPERIENCE • Two Pilot Projects completed with ARA (Anti-Rutting Additive) Incorporation of clean 5mm minus Limestone Chips to Improve Rutting Performance at intersections • Good Performance after Three Years • Incorporating 10% RAP in Mixes for Residential Renewal Projects • Performing equal to or better than Standard Mix • ISSUES • Increased Material and Labour • Costs (20% - 30% in 2006)

  4. BRITISH COLUMBIA MINISTRY OF TRANSPORTATION • RECENT EXPERIENCE • 2006 – Superpave Coarse Grading w/ PG 70-22 • High Traffic Border Crossing • 2004 – Asphalt Rubber Project (CTAA 2005) • Significant Cost Premium • 2003 – Small SMA Demonstration Project (Victoria Region) • Draindown / Temperature Problems (No Fiber) • -2006 - Several OGFC Projects (CTAA 2001) • Over 10 Years of Experience, Positive Results • Several Micro-Surfacing Projects (CTAA 2005) • Good Performance • Seal Coat w/ Polymer Modified Emulsion Project • Mixed Reviews, Some Bleeding

  5. BRITISH COLUMBIA MINISTRY OF TRANSPORTATION • ISSUES • Superpave Mixes now specified for 30% of Projects • Coarse Graded only, not interested in Fine Graded • Quality Aggregate in Lower Mainland (No Cost Premium) • PGAC on only a few projects • FUTURE INIATIVES • OGFC Surfacing will be used on the entire Sea-To-Sky Highway (including bridge decks)

  6. CORPORATION OF THE CITY OF DELTA • RECENT EXPERIENCE • 2003 – Open Graded Friction Course • One Superpave Coarse Graded mix for Truck Route • Good Performance, Improved Safety • ISSUES • Storage for Specialty Binders and Issue for Contractors • Increased Costs for Small Quantities of Specialty Mix (up to 60% Premium)

  7. CITY OF VANCOUVER RECENT EXPERIENCE 2004-05 – Use of PG 76-22 Modified Binder ISSUES Use of RAP * Western Canadian User-Producer Exchange, Issue No. 1, Novemeber 2005

  8. CITY OF KELOWNA • RECENT EXPERIENCE • 2004 – Superpave Fine Graded w/ PG 76-28 used on two Highway 97 Intersections • Very Good Performance, Minimal Rutting • 2006 – Continued Use of Superpave Fine w/ 80-100 A • ISSUES • In Some Cases Contractor Capability for Superpave • Suitable Aggregates and Binders have been available, but Increasing Costs are a Concern • FUTURE INIATIVES • Interested in Warm Mix Asphalt

  9. SASKCHEWAN HIGHWAYS & TRANSPORTATION • RECENT EXPERIENCE • 2005 – 20km Asphalt Rubber Project • Positive, Reduced Reflective Cracking • 2005-06 – Thin Lift HMA Overlays on High Volume Roadways • Generally Good • 2006 – 1st Washed Chip Seal w/ CRS Emulsion • Early Indications Positive • ISSUES • Asphalt Rubber Blending Capability Now in Province • Increased Use of Manufactured Aggregates • FUTURE INIATIVES • Asphalt Rubber R & D (Various Thicknesses)

  10. CITY OF SASKATOON RECENT EXPERIENCE 2004 - Thin Lift Overlays (20mm) using PMA Extensive use of Micro-surfacing since 1998 High Stability Mixes w/ various PGAC (including PMA) for Arterial Streets PMA Bridge Mastic Mixes * Western Canadian User-Producer Exchange, Issue No. 1, Novemeber 2005

  11. CITY OF REGINA • RECENT EXPERIENCE • Using Modified Binders on Major Roadways for past 8 years with Aggregates meeting Superpave Requirements • Initial Performance Positive, Reduced Reflective Cracking • Using 100-120 mm Replacement Depth for Intersection Treatments • ISSUES • Difficulties with Hand Work using Superpave Mixes and Compaction needs to be completed quickly • Fumes Identified as an Issue on Hot / Calm Days • FUTURE INIATIVES • Considering Crumb Rubber Mix • Pilot Project

  12. ALBERTA INFRASTRUCTURE & TRANSPORTATION • RECENT EXPERIENCE • Modified Binders PG 54-34, 58-37, 70-28, 76-31 • Generally Positive Experience (CTAA 2006) • 2002-06 Asphalt Rubber Gap Graded • Very Expensive and No Improved Performance • Two 2004 Projects Failed (raveling) requiring M & I • Chip Seal with Polymer Modified Emulsion • Positive • Micro-surfacing Rut Filling & Surface Treatment • Surface Treatment (Service Period 4-6 years) • Superpave Mixes discontinued in 2001 (CTAA 2006)

  13. ALBERTA INFRASTRUCTURE & TRANSPORTATION • ISSUES • Asphalt Availability an Issue in 2006 • Contractor Capability & Aggregate Availability seen as issues for mixes such as SMA • Cost of Modified Binders makes it difficult to justify based on LCCA • FUTURE INIATIVES • Continue to Explore Options • Including SMA for Intersections

  14. CITY OF LETHBRIDGE • RECENT EXPERIENCE • 2006 – Superpave Fine Graded w/ PG 64-28 • 2002 – Asphalt Rubber w/ 150/200 A • Poor Initial Performance (Raveling) • 2002-05 – Terminal Blend Rubber Modified Binder • Good Performance • 2002 & 2005 – SMA w/ PG 70-28 • Very Good Performance • Superpave Coarse Graded and • Fine Graded (PG 70-28, 150/200) • Specified for All New • Major Road Construction

  15. CITY OF LETHBRIDGE • ISSUES • Non-PMA Binders Being Used to Reduce Cost Premium • Partnering & Shared Risk Approach used for Implementing Specialty Mixes (e.g. SMA) • FUTURE INITIATIVES • Examine Appropriateness of Superpave Moisture Susceptibility Criteria • Examine Reduced Design Gyrations (75 for < 5 Million ESALs)

  16. CITY OF CALGARY • RECENT EXPERIENCE • SMA, Superpave Coarse & Fine Graded, Asphalt Rubber (Wet & Dry Process, Sulphur Extended Asphalt Modifier, Manufactured Shingle Modifier, Warm Mix Asphalt (CTAA 2006) • Good Rutting Performance with SMA • Good Overall Performance with Asphalt Rubber discontinuation of subsidy could effect future) • Good Performance with PG 70 & 76, but more use of PG 64-31 (lower cost premium) Superpave Fine (PG 64-31) designed with 75 Gyrations has worked well • Superpave Fine designed to 100 gyrations have been inconsistent in performance (low AC, raveling) • Concern with emissions with SEAM, • no advantages evident • (still can smell 2 years later)

  17. CITY OF CALGARY ISSUES Cost Premium with Premium Mixes (performance experience justifies cost) Contractor Capability Typically not an Issue (inconsistent performance once or twice a year) Cost Escalation and Lack of Bidding Contractors FUTURE INITIATIVES Goal is to work towards a long term strategy for regular and premium mix applications

  18. CITY OF EDMONTON • RECENT EXPERIENCE • Superpave w/ PG 54-34 & PMA I • Poor Rutting Performance with PMA I • Asphalt Rubber w/ 150/200 A & 80/100 A • Poor Performance Initial 2 Years (Raveling) • Recent years may be better • Some Constructability Issues / Placement Temperature • SMA w/ PG 70-28 & PG 76-28 (CTAA 2004) • Excellent Performance on High Traffic Applications (Yellowhead Trail, • Whitemud Dr. • and Intersections)

  19. CITY OF EDMONTON • ISSUES • Aggregate Quality is an issue in Edmonton • Aggregate Cost Premium for Specialty Mixes • Quarried SMA Aggregate Imported • PMA Binder Cost, and in some cases availability, a issue • Contractor Capability an issue with new products until comfort level gained – May have caused some past problems • FUTURE INIATIVES • Currently looking at Warm Mix Asphalt as a • potential new process

  20. Leonnie Kavanagh – Manitoba Highways Darwin Kupskay – City of Winnepeg Magdy Beshara – Saskatchewan Highways & Transportation Harlan Ritchie – City of Regina Mike Oliver – BC Ministry of Transporation Bill Mahoney – City of Kelowna Harold Fograscher – Corporation of the City of Delta Chuck McMillan – Alberta Infrastructure & Transportation Ken Yeung – City of Calgary Hugh Donovan – City of Edmonton

  21. THANK YOU Leonnie Kavanagh – Manitoba Highways Darwin Kupskay – City of Winnepeg Magdy Beshara – Saskatchewan Highways & Transportation Harlan Ritchie – City of Regina Mike Oliver – BC Ministry of Transporation Bill Mahoney – City of Kelowna Harold Fograscher – Corporation of the City of Delta Chuck McMillan – Alberta Infrastructure & Transportation Ken Yeung – City of Calgary Hugh Donovan – City of Edmonton

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