Caltrans – District 8
Southern Regional Lab
Presented By
Sarah Hartz, P.E.
District 8 SRL Office Chief (A)

•Origin of the SRL
•Organizational Chart
•Current Laboratories
•Quality Assurance
•Partnerships
•District 8 Materials Updates
•Conclusion
Outline

• Built in February 2009
• Opened on May 23, 2011
Origin of SRL

Organizational Chart

• Title 23 Code of Federal Regulations
637 Subpart B
• CTM
• AASHTO
• ASTM
• A2LA
Quality Assurance

• HMA
• Binder & Emulsion
• Aggregates & Soils
• Concrete
• Specialty Testing
• Falling Weight Deflectometer
• Inertial Profiler
• Skid Testing
• Coring
• Material Plant Quality Program
• Calibration
• Field Testing
Current Laboratories

Current Laboratories – Hot Mix Asphalt
• Job Mix Formula (JMF)
• Production Start Up (PSU)
• Gyratory Compactor
• Hamburg Wheel
AASHTO T209: Theoretical Specific Gravity
(RICE)

Current Laboratories – Hot Mix Asphalt
AASHTO T308
Asphalt Binder
Content

Current Laboratories – Binder/Emulsion
Bending Beam Rheometer - Binder
Rotational
Viscometer -
Binder
Saybolt
Viscometer -
Emulsion
Dynamic Shear
Rheometer -
Binder Rolling Thin Film Ovens
Ductility
Machine

Current Laboratories – Aggregates & Soils
Aggregates Lab Soils Lab

• CT 301 Method for Determining the
Resistance “R” Value of Treated and
Untreated Bases, Subbases, and
Basement Soils by the Stabilometer
Current Laboratories – Aggregates & Soils
CURRENT SOIL/BASE TESTING
FUTURE SOIL/BASE TESTING
• AASHTO T 307 Standard Method
• Will eventually replace our use of R-
Value testing

• Job Mix Formula (JMF) and Production Startup
(PSU) Verification of Aggregate, RAP, and Crumb
Rubber Testing
Current Laboratories – Aggregates & Soils
CURRENT AGGREGATE TESTING
FOR HMA MIXES

• CT 521 and ASTM C39 –
Compressive Strength
• CT 540 and ASTM C 31 –
Making and Curing
Concrete Cylinders
Current Laboratories - Concrete

• Specialty Testing
• Falling Weight
Deflectometer (FWD)
• Inertial Profiler (IP)
• Skid Testing
• Coring
• Material Plant Quality
Program (MPQP)
• Calibration of Equipment
Current Laboratories – Specialty Testing

Current Laboratories – Field Testing

• Industry
• District 7, 8, 9, 11 & 12
• Pavement Program
• METS
• HQ Construction
• PMPC
• FHWA
• Counties & Cities
Partnerships

• CalFP to CalME
• CalFP – TI = 15
• CalME – TI >15
District 8 Materials Updates

• HMA is also for
Rigid Pavement
• PDR & FDR
Pavement
District 8 Materials Updates

• Origin of the SRL
• Organizational Chart
• Current Laboratories
• Quality Assurance
• Partnerships
• District 8 Materials Updates
Key Take Aways

Sarah Hartz, P.E.
District 8 Southern
Regional Lab
Office Chief (A)
Email: sarah.hartz@dot.ca.gov
Cell: (916) 719-0527
Contact Information