At the California Asphalt Pavement Association (CalAPA) Spring “Technical Tune-Up” Educational Workshop held April 5, 2022 in Brea, a presentation titled, "CCPIC Presents the HMA-LG Specification for Local Agencies" and delivered by Erik Updyke, Specialist, University of California City & County Pavement Improvement Center (CCPIC). CCPIC recently published their model specification for asphalt pavements, HMA-LG. This specification addresses local agency concerns with Section 39 of the Caltrans Standard Specification. Learn about the benefits of this specification and how local agencies can use this specification, today!

1. Superpave
for
Local Government
(HMA-LG)
Erik Updyke, P.E.
CalAPA Spring Asphalt
“Technical Tune-Up”
April 5, 2022

2. • Mission
▪CCPIC works with local governments to increase
pavement technical capability through timely, relevant,
and practical support, training, outreach and research
• Vision
▪Making local government-managed pavement last longer,
cost less, and be more sustainable
CCPIC Mission and Vision

3. www.ucprc.ucdavis.edu/ccpic
• Sponsored by the League of California Cities
(League), County Engineers Association of
California (CEAC), and the California State
Association of Counties (CSAC)
• Chartered September 28, 2018

4. www.ucprc.ucdavis.edu/ccpic
• University of California Partners
▪ University of California Pavement Research Center
(lead)
▪ UC Berkeley ITS Tech Transfer
• California State University Partners
▪ CSU-Chico, CSU-Long Beach, Cal Poly San Luis
Obispo

5. • Governance
▪ Governance Board consisting of 6 city (League) and 6 county
(CEAC, CSAC) transportation professionals
• Current Funding
▪ Seed funding from SB1 through:
▪ Institute of Transportation Studies at UC Davis, UC Berkeley, UC Los
Angeles, UC Irvine
▪ Mineta Transportation Institute at San Jose State University
CCPIC Organization

6. • Technology Transfer:
▪ Training courses
▪ Pavement Engineering and Management Certificate and
Pavement Construction Inspection programs for working
professionals through UC Berkeley ITS Tech Transfer
▪ Outreach
• Technical Resources:
• Technical briefs,
• guidance,
• sample specifications,
• tools, and other resources
CCPIC Scope

7. • Resource Center:
▪ Outreach,
▪ questions,
▪ pilot study documentation, and
▪ forensic investigations
• Research and Development:
▪ For local government needs that are not covered by State and
Federal efforts
▪ Adapting work done for state government
CCPIC Scope

8. CCPIC Training: Upcoming Classes
Code Title Date
CCA-01 Introduction to Pavement Engineering and Management June 6 - 9, 2022

9. • PEM Certificate Program Overview
▪ For engineers, asset managers, upper-level managers, technicians and
construction inspectors
▪ 88.5 hours of training
• 56.5 hours in core classes, 32 hours in electives
• Majority of classes to be offered online
▪ In four categories:
• Fundamentals
• Management
• Materials and Construction
• Design
Pavement Engineering & Management (PEM)
Certificate Program

10. Pavement Engineering & Management Certificate: Curriculum

11. PEM: Core Course Development
Code Title Instructor(s) Status Format Duration
CCA-01 Introduction to Pavement Engineering and Management Harvey Completed Online 10 hours
CCA-02 Pavement Sustainability Harvey Completed Online 4 hours
CCB-01 Pavement Life Cycle Cost Analysis Hicks, Cheng Completed Online 4 hours
CCB-02
Pavement Management Systems and
Preservation Strategies
Yapp, Signore Completed Online 10 hours
CCC-01 Asphalt Concrete Materials and Mix Design Milar Completed Online 8 hours
CCC-02
Asphalt Pavement Preservation Treatments, Materials,
Construction, and Quality Assurance
Hicks, Cheng Completed Online 8 hours
CCC-03
Pavement Construction Specifications and Quality
Assurance
Updyke,
Slocum, Forrest
Completed Online 8 hours

12. • PCI Certificate Program Overview
▪ For engineers, material testing technicians and construction
inspectors
▪ 80.5 hours of training
• 68.5 hours in core classes, 12 hours in electives
• Majority of classes to be offered online
Pavement Construction Inspection (PCI)
Certificate Program

13. Pavement Construction Inspection Certificate: Curriculum
Core Hrs
CORE
68.5
required
PD-01 Construction Inspection 16
CCI-01 Asphalt Pavement Construction Inspection 4
CCI-02 Concrete Pavement Construction Inspection 4
CCI-03 Concrete Street Improvements Construction Inspection 4
CCI-04 Pavement Preservation Construction Inspection 4
CCC-02 Pavement Preservation Treatments, Materials, Construction, Quality Assurance 8
CCC-03 Pavement Construction Specifications and Quality Assurance 12.5
CCC-26 Pavement Construction Management 8
TS-10 Work Zone Safety 8
68.5 Core 68.5
Electives (choose 12 hours from list below) Hrs
ELECTIVE
12 required
26 offered
CCC-22 In-Place Recycling 8
CCC-24 Roadway Construction Phasing, Scheduling, and Traffic Control 4
CCI-06 Construction Inspection of Asphalt-Rubber Pavement Materials 2
PD-02 Construction Inspection of Traffic Signals 8
TS-18 Excavation and Trenching Safety 4
12 Electives 26
80.5 Total required for certificate

14. • LCCA Spreadsheet: Posted.
• AC/HMA Compaction Sample Specifications
(CSULB, CPSLO, UCD): Posted.
• Tack Coat Special Provisions
(CSULB, CPSLO, UCD): Posted.
• “PCI: There’s More (and Less) to the Score:”
Posted.
• Superpave for Local Government (HMA-LG):
Posted (4-06-21).
• Site Investigation Guide. Being adapted from
guide developed for Caltrans.
Update on Technical Guidance and Tools

15. Hot Mix Asphalt – Local
Government (HMA-LG)
Superpave Mix Design for City and County Streets and
Roads

16. • CCPIC technical committee
▪ John Harvey, UC Davis
▪ Erik Updyke, UC Davis
▪ Shadi Saadeh, CSU Long Beach
▪ Ashraf Rahim, Cal Poly San Luis Obispo
▪ Frank Farshidi, City of San Jose
• Basis: Caltrans Section 39
▪ Reorganized
▪ Reviewed and compared to City of San Jose and Caltrans Superpave HMA-
LV specifications (neither used as the basis)
▪ Discussed and simplified requirements for each design Level
HMA-LG: Background and Development

17. • Draft Version:
▪ Prepared for distribution and solicitation of comments
• Request for Comments:
• Sent to selected local agencies and CalAPA
• CalAPA distributed to members
• Only one response from a local agency received
• Brandon Milar collected and consolidated CalAPA comments
• Final Version:
• CalAPA comments discussed and reconciled with Brandon during two
workshop sessions.
• Finalized and posted on CCPIC website April 9, 2021
HMA-LG: Background and Development

18. • Gradations:
• 3/8”, 1/2”, 3/4”
• Based on Asphalt Institute MS-2
• Reclaimed Asphalt Pavement (RAP):
▪ Maximum allowed binder replacement = 25%
• Lime Treatment/Liquid Anti-Strip:
▪ Requirement based on aggregate quality
• Warm Mix Asphalt (WMA) Technology:
▪ Optional
HMA-LG: Materials

19. • Design Levels:
• Three Levels of mixture design, I, 2, & 3
• Based on Asphalt Institute MS-2 (Table 6.4) and Caltrans Highway
Design Manual (Table 613.3C)
• Each Level has corresponding aggregate quality requirements
• Each Level has corresponding testing requirements
HMA-LG: Design Levels

20. • Level 1 (Traffic Index 5.0 to 7.5)
▪ Air voids content: Ndesign= 3.5%
▪ No. of Gyrations: Ndesign= 50
• Level 2 (Traffic Index 8.0 to 10.0)
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 65
• Level 3 (Traffic Index 10.5 to 13.5)
▪ Air voids content: Ndesign= 4.0% (same as Caltrans Section 39)
▪ No. of Gyrations: Ndesign= 85 (same as Caltrans Section 39)
HMA-LG: Design Levels

21. Level 1 (Traffic Index 5.0 to 7.5)
Quality Characteristic Test Method Requirement
Air voids content (%) AASHTO T 269a Ninitial > 8.0
Ndesign = 3.5
Nmax > 2.0
Gyration compaction (no. of gyrations) AASHTO T 312 Ninitial = 6
Ndesign = 50.0
Nmax = 75
Voids in mineral aggregate (min, %)b
Gradation:
3/8-inch
1/2-inch
3/4-inch
MS-2
Asphalt Mixture
Volumetrics 14.5–17.5
13.5–16.5
12.5–15.5
Dust proportion MS-2
Asphalt Mixture
Volumetrics
0.4-1.4
Hamburg wheel track (min number of passes at 0.5-inch rut
depth)
Binder grade:
PG 58
PG 64
PG 70
PG 76 or higher
California Test
389 c
5,000
7,500
15,000
20,000
HMA-LG: Level 1

22. Level 2 (Traffic Index 8.0 to 10.0)
Quality Characteristic Test Method Requirement
Air voids content (%) AASHTO T 269a Ninitial > 8.0
Ndesign = 4.0
Nmax > 2.0
Gyration compaction (no. of gyrations) AASHTO T 312 Ninitial = 7
Ndesign = 65.0
Nmax = 115
Voids in mineral aggregate (min, %)b
Gradation:
3/8-inch
1/2-inch
3/4-inch
MS-2
Asphalt Mixture
Volumetrics 15.0–18.0
14.0–17.0
13.0–16.0
Dust proportion MS-2
Asphalt Mixture
Volumetrics
0.5-1.3
Hamburg wheel track (min number of passes at 0.5-inch rut
depth)
Binder grade:
PG 58
PG 64
PG 70
PG 76 or higher
California Test
389c
10,000
15,000
20,000
25,000
HMA-LG: Level 2

23. Level 3 (Traffic Index 10.5 to 13.5)
Quality Characteristic Test Method Requirement
Air voids content (%) AASHTO T 269a Ninitial > 8.0
Ndesign = 4.0
Nmax > 2.0
Gyration compaction (no. of gyrations) AASHTO T 312 Ninitial = 8
Ndesign = 85.0
Nmax = 130
Voids in mineral aggregate (min, %)b
Gradation:
3/8-inch
1/2-inch
3/4-inch
MS-2
Asphalt Mixture
Volumetrics 15.5–18.5
14.5–17.5
13.5–16.5
Dust proportion MS-2
Asphalt Mixture
Volumetrics
0.6–1.3
Hamburg wheel track (min number of passes at 0.5-inch rut
depth)
Binder grade:
PG 58
PG 64
PG 70
PG 76 or higher
California Test
389 c
10,000
15,000
20,000
25,000
HMA-LG: Level 3

24. • Superpave LV (Level 1)
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 65
• Superpave LV (Level 2)
▪ Air voids content: Ndesign= 3.5%
▪ No. of Gyrations: Ndesign= 65
• City of San Jose (Type F)
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 85
HMA-LG: Design Level Comparison

25. • City of San Jose (Type H)
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 65
• City of Phoenix
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 75 (Low Traffic), 100 (High Traffic)
• Maricopa Association of Governments (Arizona)
▪ Air voids content: Ndesign= 4.0%
▪ No. of Gyrations: Ndesign= 100
HMA-LG: Design Level Comparison

26. • JMF Verification:
▪ Agency may perform testing or accept testing performed for another
project using identical materials within the past 24 months
• Verified JMF:
▪ Valid for 24 months
• Production Start-Up Evaluation:
▪ Requirements simplified.
▪ Not required for projects under 2,000 tons
• Production Quality Control Requirements:
▪ Some testing requirements based on Level
HMA-LG: JMF, Production

27. • Compaction/Density:
▪ Test strip per California Test 375 (modified to use AASHTO T 209 for
theoretical maximum density):
oRequired for projects 2,000 tons or greater
oNot required for projects under 2,000 tons
▪ Test strip may be constructed on day of production verification or first day of
paving
▪ Testing by use of a nuclear gauge correlated from cores taken from the test
strip
▪ 92 -97% of TMD required
▪ Testing by Lots
▪ Each Lot = 1,500 tons, or one day of production if less
HMA-LG: Technical

28. • Smoothness:
▪ Based on 12-foot straightedge
• Payment:
▪ Reduced Payment Factor for failure to achieve required density
HMA-LG: Smoothness, Payment

29. General:
• Specification is “self-contained”, “stand-alone.”
▪ Specifies materials, mixture, production, and placement requirements
• Use as a Special Provision with either Caltrans or the Greenbook, or insert in
Agency Standard Specifications
▪ Do not edit to reference portions of either the Caltrans Standard
Specifications or the Greenbook
• Not intended to be used as a “cut and paste” with other specifications.
HMA-LG: Usage in Contracts

30. Edits & Specific Choices Required:
• 139-3.1.2 Quality
▪ Aggregate Quality Level (must correspond to design level)
• 139-3.1.3 Gradations
▪ Required combined aggregate gradation(s) or shown on the Plans
• 139-3.3 Asphalt Binder
▪ PG Grade
▪ Modified binder, if required
HMA-LG: Usage in Contracts

31. Edits & Specific Choices Required:
• 139-4.2.1 General
▪ Design Level(s)
• 139-4.2.2 Reclaimed Asphalt Pavement
▪ Maximum Binder Replacement (if other than 25%)
• 139-4.2.3 Treatments
▪ Requirement for dry lime, lime slurry, or liquid antistrip is based on JMF
HMA-LG: Usage in Contracts

32. Edits & Specific Choices Required:
• 139-4.2.4 Warm Mix Asphalt Technology
▪ Optional
▪ Specify acceptable technologies if required
• 139-6.8.1 HMA-LG Density
▪ Choose one of the two paragraphs specifying when the test strip is to be
placed
HMA-LG: Usage in Contracts

33. • Local Agency Pilot Projects: Needed!
• Northern, central, and southern parts of the state
• CCPIC will provide technical support for implementation by local
agencies.
• May be able to provide mix design verification
• CCPIC will document and publish results
• Intent is to have periodic updating and improvement of the
specification based on experience and feedback
HMA-LG: Pilot Projects

34. • Not for use on the State Highway System
• Not approved for use on National Highway System (NHS) routes
• Posted on the CCPIC website:
• www.ucprc.ucdavis.edu/ccpic
• Go to “Sample Specifications”
• Word file available for downloading:
• Awaiting interest from Local Agencies in administering pilot projects
HMA-LG: Status

35. • John Harvey, UC Davis
▪ jtharvey@ucdavis.edu
• Erik Updyke, UC Davis
▪ eupdyke@ucdavis.edu
• Brandon Milar, CalAPA
▪ bmilar@calapa.net
HMA-LG: Contacts

36. • Best Practices & Tech
Briefs
• Training classes
• Outreach
Presentations
• Sample Specifications
• Guidance
• Tools
• Workshops
• Pavement Contact List
• News and Events
CCPIC Website

37. www.ucprc.ucdavis.edu/ccpic