Erik Updyke with the Los Angeles County Department of Public Works, and a member of the Greenbook Committee, gives an update at the CalAPA Spring Conference & Equipment Expo April 12-13, 2017 in Ontario, Calif. The topic is on the latest update of the Greenbook specification book for public works agencies in California.

1. California Asphalt Pavement
Association
Spring Asphalt Pavement
Conference
April 13, 2017
Erik Updyke
Los Angeles County
Department of Public Works
APWA Co-Chair

2.  Subsection 203-6 entirely new.
 Incorporates applicable provisions from 203-7
and 400-4 (Type III mixtures) of the 2012
Edition.
 20% maximum RAP.
 Warm Mix added as a subsection. Specific
requirements need to be in Special Provisions.

3. “… shall be the product of
mixing mineral aggregate and up to 20 percent …
RAP …”
Maximum RAP percentage increased from 15 to 20.
“When so specified in the Special Provisions or
shown on the Plans, … may contain greater than 20
percent RAP and/or be produced using a warm mix
asphalt (WMA) technology.”
No change in mix design method.

4. “… designated by class of combined aggregate gradation and
performance grade of paving asphalt, e.g. “C2-PG 64-10.””
Nomenclature revised to include suffix for RAP percentage
and WMA technology:
No suffix: RAP < 20%. “C2-PG 64-10”
“No RAP” Suffix: “R0.” “C2-PG 64-10-R0.”
RAP > 20% Suffix: “R” and the % RAP. “C2-PG 64-10-R25.”
WMA Suffix: “WMA.” “C2-PG 64-10-WMA.” “B-PG 70-10-
R25-WMA”
“Asphalt concrete mixtures may be
produced using a WMA technology if so specified in
the Special Provisions.”

5.  Totally revised.
 MAC-10TR deleted.
 PG 64-28TR & PG 76-22TR added.
 Edited.

6.  New.
 PG 64-28PM & PG 76-22PM added.
 New.

7.  Gradation for GG-D corrected in Table 203-
11.3.
2017 Supplement will not be
published.

8.  Asphalt Rubber Hot Mix (ARHM)(“Wet
Process”) (203-11, 302-9)
 Tire Rubber Modified Asphalt Concrete
(TRMAC) (“Terminal Blend Process”)(203-14,
302-12)
 Crumb Rubber Modified Asphalt Concrete
(CRUMAC) (“Dry Process”) (203-13, 302-11)

9. “Field Blend” (“Wet”) Process
(“Asphalt Rubber,” 203-11)
“Terminal Blend” Process
(“MAC15-TR,” “PG 64-28TR,”
“PG 76-22TR,”
203-14)
CP2 Center News,
Sept. 2009

10.  Change No. 276S. Add polymer modified
emulsion to 203-3; specify PMCQS-1h as the
standard emulsified asphalt for slurry seal in
203-4; and editorial revisions to 302-4.
 Change No. 279S. Add microsurfacing.
 Change No. 282S. Revise, update 302-1 (cold
milling) and move to new 403; add micro-
milling as new 404.

11.  203-5.5.4 Work Site Mixing [REAS produced
in a slurry truck]. Remove from the SSPWC?
 203-10 Latex Modified Asphalt Concrete.
Remove from the SSPWC?
 203-13, 302-11 CRUMAC-GG. Remove from
the SSPWC?

12.  203-6.3.3 Superpave Mix Design
Method.
 203-6.6 Hot Mix Asphalt (“Superpave”)
Mixtures [Local Agency Version].

13.  Superpave [Local Agency Version]
Approach:
 Avoid “dry” mixes.
 Determine, via independent testing, the
Superpave test parameters which result in
mixtures close to the current Hveem B and
C2 mixtures being produced.
 Draft Subsections 203-3.3 and 203-6.6.

14.  Superpave [Local Agency Version]
 Hot drop (C2 mix) produced and samples
split by Matich [thank you!].
 Independent testing by 10 labs.
 No. of gyrations which result in a mixture
with 4% air voids to be determined by each
lab.
 No. of gyrations to be compared and a
specific no. determined.
 Additional testing on hot drops and samples
from Blue Diamond and Vulcan [thank you!]

15.  302-5 Asphalt Concrete Pavement.
 “Raise the bar.”
 Revise and update.
 Address current best practices such as
automatic screed control, material transfer
vehicles, etc.

16.  Special thanks to the Asphalt Concrete Task Force, Tom
Williams, LaBelle-Marvin, Chair; and the Surface Materials
and Methods Subcommittee, Chris Kubasek, Orange
County Public Works, Chair.
 Participation on subcommittees and task forces is at an all
time low. For the “Greenbook” to continue as a
sustainable entity, new and broader participation from
public agencies, contractors, and consultants is needed.
 THANK YOU FOR YOUR SUPPORT!