1. QC Document Update
Todd Shields, INDOT

2. 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

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

4. 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

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

6. 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

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

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

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

10. 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

11. 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?

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

13. 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

14. 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

15. 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

16. 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?

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

18. 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

19. Agency Acceptance Dispute Resolution
Split samples for acceptance testing
Notification method

20. 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???