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

• 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

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

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

• 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

• 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

• 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

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

• 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

Pavement Engineering & Management Certificate: Curriculum

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

• 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

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

• 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

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

• 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

• 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

• 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

• 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

• 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

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

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

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

• 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

• 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

• 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

• 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

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

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

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

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

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

• 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

• 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

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

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

www.ucprc.ucdavis.edu/ccpic