QC Document Update Todd Shields, INDOT

Quality Assurance Document Currently is drafted for Chip Seal Intent is to be housed on TSP2’s website Broken into 2 parts: Contractor Quality Control Agency Quality Assurance and Acceptance

Contractor Quality Control General Overview of QC and Contractor requirements Reference Documents AASHTO (and other) specs and test methods 23 CFR 637 Definitions

Contractor Quality Control Personnel Opened QC Technician to “other accrediting body approved by the agency” Require TSP2 certification for: Job Foreman Agg Sreader Operator Distributor Operator Testing Facilities Recommend AASHTO Accreditation Program Allow other accrediting body approved by Agency

Contractor Quality Control QC Activities All aspects of constructing a chip seal Emphasis on Workmanship and Performance Supplier material certifications

Contractor Quality Control Aggregate Testing – Comments/Discussion! For reference, a typical 10 mile (20 lane mile) job: ~1,500 tons of aggregate ~225 tons of emulsion Gradation Required for Design 1 per day or every 1,500 tons of placement Unit Weight Every 1,500 tons of placement Bulk Specific Gravity No need to re-test thereafter Flakiness Index

Contractor Quality Control Aggregate Testing (continued) Aggregate Absorption Required for Design Every 1,500 tons of placement Fractured Faces Prior to Construction Deleterious Material

Contractor Quality Control Aggregate Testing (continued) Application Rates Verify once/day Burlap/weigh Yield checks

Contractor Quality Control Emulsion Testing – more discussion/comments! Viscosity Every 200 tons of placement What about field viscosity? Temperature Every delivery tanker Residue Demulsibility

Contractor Quality Control Emulsion Testing (continued) Sieve Every 200 tons of placement Storage Stability MSCR – every 500 tons of placement Jnr % Recovery Ductility Every 500 tons of placement

Contractor Quality Control Emulsion Testing (continued) Elastic Recovery Every 500 tons of placement Penetration Every 200 tons of placement Ash Content Just for latex modified emulsions? Solubility Just for SBR modified emulsions?

Contractor Quality Control Emulsion Testing (continued) Application Rate Verify once per day Road Plate Yield checks

Quality Control Plan 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 – sampling locations, methods, frequency

Quality Control Plan Requires details on (continued): Placement and Workmanship Calibration procedures Method to monitor application rates Method to ensure proper spread patterns Method to respond to problems Rolling operations Sweeping operations Method to control traffic

Quality Control Plan Requires details on (continued): Documentation – reporting procedures, sample test forms, reports Non-Conformance and Corrective Action – method to identify and corrective action

Contractor Quality Control Records and Documentation QC tests submitted to Agency within 24 hours Include supplier material certifications Compliance with Specifications Statement from Contractor that project has been constructed according to specs What do we think of this section?

Agency Acceptance Acceptance Activities Materials Agency sampling Surface Preparation Equipment operation/calibration Monitoring of application rates Post placement inspection Bleeding Stone loss Joints

Agency Acceptance Independent Assurance Pay Adjustments Rejection Sample penalty schedule for Agg and Emulsion Rejection Do we want to include a penalty schedule? Aggregate > 3.0% decant – what is a good number? Emulsion > 50 viscosity > 5.0 residue > 50 penetration

Agency Acceptance Dispute Resolution Split samples for acceptance testing Notification method

Questions??? Next Steps Once we all agree on the format and content… Expand to include other treatments Micro/Slurry Tack Coat? Ultrathin Bonded Wearing Course Questions???