R. Gary Hicks and Todd Shields TSP2 Emulsion Task Force Good - PowerPoint PPT Presentation

R. Gary Hicks and Todd Shields TSP2 Emulsion Task Force

 Good materials specifications  Good design practices  Qualified personnel ◦ Contractor – actually running the equipment ◦ Agency – overseeing and accepting  Solid Quality Assurance ◦ QA Specifications ◦ QC Plans ◦ Agency Acceptance Protocols ◦ Independent Assurance

Treatments ments Materia rials ls Design gn Pract ctice ices Chip Seal MP 27-16 16 PP 82-16 16 Cold IN-Pl Place ace Recycl cyclin ing MP 31-17 17 PP 8 86-17 17 Fog Seal al MP 33-17 17 PP 8 88-17 17 Micro surfa facing cing MP 28-16 16 PP 8 83-16 16 Sand Seal MP 34-18 18 PP 90-18 18 Scrub ub Seal N/A PP 9 91-18 18 Slurry y Seal MP 32-17 17 PP 8 87-17 17 5

 Scope  Refer erenced enced Documen cuments ts  Term rminology inology  Significa gnificance nce and nd Use  Emu mulsif lsified ied Asphalt halt Requ quiremen irements ts  Aggre regat gate e Requi uirem remen ents ts  Key Word rds This Photo by Unknown Author is licensed under CC BY-SA 6

 Scope pe  Referenced nced Docum uments nts  Signif ifica icance nce and Use  Evalua luati tion on of Materi rials ls  Design gn Proce cess ss  Determ rmini ining ng applicati ication on rates  Report  Keywor words ds  Reference nces 7

Guide includes:  Contractor Quality Control  Agency Acceptance Protocols  Independent Assurance  Currently in DRAFT format  Being reviewed/finalized by ETF

 Quality Control Plan is approved by the Agency  Personnel ◦ Require TSP2 certification for:  Job Foreman ◦ Recommend for:  Aggregate Spreader Operator  Distributor Operator  Testing Facilities ◦ Recommend AASHTO Accreditation Program ◦ Allow other accrediting body approved by Agency

◦ Gradation ◦ Unit Weight ◦ Bulk Specific Gravity ◦ Flakiness Index ◦ Aggregate Absorption ◦ Fractured Faces ◦ Deleterious Material ◦ Application Rates

◦ Viscosity ◦ Temperature ◦ Residue ◦ Demulsibility ◦ Sieve ◦ Storage Stability ◦ Multiple Stress Creep Recovery (MSCR) ◦ Ductility ◦ Elastic Recovery ◦ Penetration ◦ Ash Content (cationic) ◦ Solubility (anionic) ◦ Application Rate

 Require to be submitted at least 15 days prior to construction.  Requires details on: ◦ Scope – all applicable specifications ◦ QC Organization – org chart, qualifications ◦ Testing Facilities and Equipment – testing labs, equipment calibration ◦ Materials Control – sources, stockpiling ◦ QC Activities –  Workmanship  Materials sampling locations  Test methods and Frequency  Inspection and Oversight

 Placement and Workmanship ◦ Calibration procedures ◦ Method to monitor application rates ◦ Method to ensure proper spread patterns ◦ Rolling operations ◦ Sweeping operations ◦ Method to control traffic  Documentation – reporting procedures, sample test forms, reports  Non-Conformance and Corrective Action – method to identify and corrective action  QC tests submitted to Agency within 24 hours. Include supplier material certifications

 Materials Sampling and Testing ◦ Aggregate and Emulsion Testing ◦ Vendor certifications  Materials  Personnel  Surface Preparation ◦ Surface is clean and dry ◦ Minor defects corrected  Construction Procedures ◦ Equipment calibrated and functioning correctly ◦ Proper placement procedures followed  Post Placement ◦ Check for any issues ◦ Bleeding, broken aggregate, raveling, joint laps, etc.

 IA is conducted by the Agency  Purpose is to Evaluate for Adequacy ◦ Personnel skills ◦ Equipment ◦ Both agency acceptance testing and contractor QC testing  IA is NOT for determining if materials or processes are in spec

 Once we all agree on the format and content for chip seals…  Expand to include other treatments ◦ Micro/Slurry ◦ Tack Coat/fog seals ◦ Ultrathin Bonded Wearing Course ◦ Other

R. Gary Hicks Phd, P.E. rghicks40@outlook.com 530-588-4446 17