California Asphalt Pavement

Association

Spring Asphalt Pavement

Conference

April 15, 2015

Erik Updyke

Los Angeles County

Department of Public Works

APWA Co-Chair

Change Nos. 205NS (2013 Supplement) and 249NS (2015 Edition).

Subsection 203-6 replaced with entirely new 203-6.

Incorporates applicable provisions from 203-7 and 400-4 of the 2012 Edition.

“… 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.

Future subsection.

“… 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”

Moved from Part 4, Section 400. No changes to mixture

composition requirements. “Alternate” removed from

subsection title.

“Asphalt concrete mixtures may be produced using a WMA technology if so specified in the Special Provisions.”

Separate subsections created and re-formatted. Minor revisions and updates to requirements.

Separate subsection created. Reference to CT 125 and testing of RAP stockpiles added. Specifies sampling locations for batch and dryer-drum plants.

Separate subsection created to address acceptance criteria.

Asphalt Rubber and Aggregate Membrane (ARAM)(203-12, 302-10)

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)

“Field Blend” (“Wet”) Process

(“Asphalt Rubber,” 203-11)

“Terminal Blend” Process

(“MAC-10TR,” “MAC15-TR,”

203-14)

CP2 Center News, Sept. 2009

Gradations revised to be “one rock thick” and consistent with Caltrans. New subsection covering pre-coated, pre-heated screenings added. Change No. 257NS.

Revised to specify materials only. Change No. 257NS.

Replaced with entirely new subsection. Very consistent with Caltrans. Written to cover chip seals using either polymer modified emulsion (“cold-applied”) or modified paving asphalt (“hot-applied”). Change No. 263NS.

New. Specifications for production at a central

mixing plant. Change No. 164NS.

Completely revised. Specifications for

in-place production, placement, compaction, finishing,

and curing. Change No. 164NS.

New. Specifications for pulverization and stabilization of

in-place materials with cement. Change No. 164NS.

Special thanks to the Asphalt Concrete Task Force, Tom

Williams, LaBelle-Marvin, Chair; and the Stabilized Base Task

Force, Krishna Nadaraja, 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 and

consultants is needed.

THANK YOU FOR YOUR SUPPORT!