1. Chip Seal Quality Assurance Guide
Todd Shields, Indiana dot
Tsp2 emulsion task force

2. What is the goal?

3. What we are trying to AVOID

4. So how do we get there? Good specifications Good designs
Qualified personnel
Contractor – actually running the equipment
Agency – overseeing and accepting
Solid Quality Assurance
QA Specifications
QC Plans
Agency Acceptance Protocols
Independent Assurance

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

6. Contractor Quality Control Plan
Quality Control Plan is approved by the Agency
Personnel
Require TSP2 certification for:
Job Foreman
Recommend for:
Agg Sreader Operator
Distributor Operator
Testing Facilities
Recommend AASHTO Accreditation Program
Allow other accrediting body approved by Agency

7. Contractor Quality Control - Aggregate
Gradation
Unit Weight
Bulk Specific Gravity
Flakiness Index
Aggregate Absorption
Fractured Faces
Deleterious Material
Application Rates

8. Contractor Quality Control - Emulsion
Viscosity
Temperature
Residue
Demulsibility
Sieve
Storage Stability
Multiple Stress Creep Recovery (MSCR)
Ductility
Elastic Recovery
Penetration
Ash Content (cationic)
Solubility (anionic)
Application Rate

9. Contractor 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 –
Workmanship
Materials sampling locations
Test methods and Frequency
Inspection and Oversight

10. Contractor Quality Control Plan
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

11. Agency Acceptance Protocols
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.

12. Independent Assurance
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

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