Caltrans Specifications - Changes and Implementation

Scott Dmytrow Telfer Oil Telfer Highway Technologies

Pavement Preservation Task Group• Industry• Caltrans• Local Agency

• Purpose is to work on issues and specifications associated with pavement preservation

• Flexible Pavement • Rigid Pavement – (Both Types)

– cracked and – going to crack

Current Tasks for Flexible Pavements

• Fog Seal Specifications (on Hold)• Cold in Place Recycling with emulsion and

foamed asphalt (In rewrite)• Full Depth Reclamation (In development)• Asphalt Rubber Warm Mix (Test sections in

place)• Modified Binder (Terminal Blend – Test sections

in place)• Re-Write of Section 37 (more to follow later)

Recently Completed Task• Scrub Seal Specification Using PMRE

– Industry and Caltrans agreement on specification – (7 years in the making)

– Hard copies being passed around– Electronic copy available from Caltrans– Generic scrub seal specification using

rejuvenating emulsion– Emulsion can also be used for chip seal

without the scrub broom

Highlights of Scrub Seal Spec• 37-2.06A(1)(c) Submittals

• At least 10 days before starting seal coat application, submit the name of the authorized laboratory that will be performing quality control testing.

• Submit MSDS for each polymer modified rejuvenating asphaltic emulsion ingredient and the polymer modified rejuvenating asphaltic emulsion.

• At least 15 days before starting seal coat application, submit the following initial samples and test results:– 1. Two- ½ gallon samples of polymer modified rejuvenating asphaltic emulsion

in a plastic container from the emulsion supplier.– 2. Polymer modified rejuvenating asphaltic emulsion test results for quality

characteristics specified in 37-2.06B(2) from supplier of polymer modified rejuvenating asphaltic emulsion.

– 3. Rejuvenating agent test results for quality characteristics specified in 37-2.06B(2) from the supplier of the polymer modified rejuvenating asphaltic emulsion.

• 37-2.06A(1)(d) Quality Control and Assurance• 37-2.06A(1)(d)(i) General

• Authorized Testing Laboratory for polymer modified rejuvenating asphaltic emulsion quality control testing must participate in the AASHTO Proficiency Sample Program.

• Authorized Testing Laboratory for aggregate quality control testing must be accredited under Department's Independent Assurance Program.

• 37-2.06A(1)(d)(ii) Quality Control• 37-2.06A(1)(D)(ii)(A) Polymer Modified Rejuvenating Asphaltic Emulsion

• For polymer modified asphaltic emulsion samples:– Circulate polymer modified asphaltic emulsion in the distributor truck before sampling.– Take samples from the distributor truck at mid load or from a sampling tap or thief.– Before taking samples, draw and dispose of 1 gallon.– Take two 1/2-gallon samples in the presence of the Engineer.

•  

Highlights of Scrub Seal Spec

• For polymer modified rejuvenating asphaltic emulsion, the Authorized Testing Laboratory must perform quality control sampling and testing at the specified frequency and location for the following quality characteristics:

Highlights of Scrub Seal Spec

Submittals for Aggregate Also• Screenings test results for the

followings:– 5.1. Gradation per California Test 202– 5.2. Los Angeles Rattler per California Test

211– 5.3. Film stripping per California Test 302– 5.4 Cleanness value per California Test

227– 5.5 Percent crushed particles per

California Test 205

Rejuvenator

Handouts are going around• To get an electronic copy send

request to • Sri Balasubramanian at Caltrans• Or send the CCSA a request and

we will send Sri an email because only 2 people can actually spell his name!

Another Completed task

• Gradations reduced to 6 with one additional available as NSSP

And now for the toughest job• SECTION 37 Seal Coats

New Section 37 Layout 1. General2. Chip Seal3. Slurry/Micro4. Fog Seals/Flush Coats5. Parking Lot Seals6. Crack Seals

Section 37 rewrite• New arrangement• Everything that is common to all

is in “General”• Once you get to a section, “chip

seal” for example all things common to all chip seals is in another “general” section

Example• 37-1.01C Submittals• At least 10 days before preconstruction meeting

submit a list of participants in the preconstruction meeting. Provide each participant's name, employer, title, and role in the production and placement of the seal coats.

• At least 10 days before starting seal coat activities, submit the names of the authorized laboratories for quality control testing.

• For each delivery of asphalt binder or asphaltic emulsion to the job site, submit a certificate of compliance and a copy of the specified test results.

Example• 37-2.01A(3) Submittals• At least 15 days before use, submit:• Samples for:

– Asphaltic emulsion chip seal; 1 gallon plastic jug of asphaltic emulsion

– Polymer asphaltic emulsion chip seal; 2 quart metal cylindrical shaped cans with open top and friction lids of polymer asphaltic emulsion

– Base asphalt binder for asphalt rubber binder chip seal; 2 quart cans of asphalt binder

– Asphalt rubber binder chip seal; 5 quart cans of asphalt rubber binder

However, if there are specifics…• At least 15 days before use, submit:• 1. Samples of each asphalt rubber

binder ingredient• 1.1. 2 lbs. of scrap tire crumb rubber• 1.2. 2 lbs. of high natural scrap tire

crumb rubber• 1.3. 2 quart cans of base asphalt binder• 1.4. 2 quarts cans of asphalt modifier

Many technical changes • Still being reviewed by Industry

and Caltrans

New Specifications for CCSA• CCSA has decided to undertake

an easier version following the Caltrans technical specs but easier format.

More next year.