Section 39

2015 Specifications

Toni CarrollTechnical Services Manager

Vulcan Materials Company

Where did Superpave Go?

New specifications still

Superpave oriented

Now referred to as 2015

Specifications

Current RSS for 2010

specification IS the 2015

specification

2010/2015 Section 39 –Organization of Spec

Sections

39-1 General

39-2 Type A HMA

39-3 Rubberized HMA-G

39-4 Open Graded Friction Courses

39-5 Bonded Wearing Courses

39-6 HMA on Bridge Decks

39-7 Minor HMA

2010/2015 Section 39 –Organization of Spec Section39-X.01 General

A.Summary

B.Definitions

C.Submittals

D.QA

39-X.02 Materials

39.X.03 Construction

39.X.04 Payment

Job Format?

No more QCQA!

Most jobs are Standard

Some jobs are Method

Changes to Mix Specifications

Tighter Specs

◦ Air Voids ±1.5%

◦ Binder for HMA: -0.3%, +0.5% TWM

◦ Binder for Rubber: -0.4%, +0.5% TWM

No more VFA

VMA Design Vs. Production

Changes to the Mix

Higher Binder Contents

◦ Compactor changes volumetrics

◦ Rubber binder content is now a

minimum of 7.5 TWM (8.1 DWA)

Changes to the Mix

Coarser gradations

FAA not required if <10% natural

sand

More fractured faces

Change to Fractured Face Method

Caltrans method consider crushed if

25% of the face is fractured.

New procedure requires 50% of the face

to be fractured. 2x more fracture!

Verification Changes

Must verify with plant set within

0.2% of binder content on CEM-

3511

Only two tries for free, additional

tries are $3000

Verification Sample Tonnages

120 lb for each Coarse Agg

80 lb for each Fine Agg

10 lb for each Supplemental Fine

Minimum of 50 lb from each RAP

stockpile or 100 lb from the belt

Total Agg: 460lbs-630lbs (1/4 Ton!)

HMA: ≥250lbs

◦ Likely will need ≈650-1000lbs (1/4-1/2

Ton!)

Sample Locations

QC samples from anywhere per CT 125

(updated May 2014)◦ Conveyor system on plant

Slat conveyor or automatic sampling device between drum discharge and

storage silos

◦ Windrow at plant or job site

◦ From silo or batch plant discharge to create stockpile

◦ From truck

◦ From paver or MTV receiving hopper

◦ From mat behind the paver

Sample Locations

QA TSR & Hamburg sampled from:

◦ At the plant

◦ At the truck

◦ Windrow

All other QA HMA samples from:

◦ At the plant

◦ At the truck

◦ Windrow

◦ Mat behind the paver

Placement

Required use of MTV for all

rubberized and OGFC

Required use of Nuclear Gage

QC Nuclear Density Testing

Required to perform QC Nuclear

Gauge Density (CT375) for all non-

minor jobs

3 per 250 tons or 3 per paving day

(whichever is greater)

Not used for acceptance, still using

cores for acceptance

◦ Cores not required if using Method

Compaction

Smoothness

Hear more tomorrow during Steve

Marvin’s presentation on Caltrans

Pavement Smoothness Specs &

Equipment

Changes to RHMA (10-17-14)

Submit local air district permit for

rubber blending equipment

Tarp trucks if atmospheric temp is

<70°F unless travel time is <30 min

Spreading & compacting only if

atmospheric temp is 55°F min and

surface temp is 60°F min

Changes to RHMA (10-17-14)

Additional QC testing required for

binder

If first 3 lots pass, testing frequency

reduced to once for every 3 lots

Acceptance samples taken once

per day or every 5 lots, whichever

is greater

AMRL Accreditation

Caltrans requires AMRL

accreditation to move towards

national standards and hopefully

reduce workload on the Caltrans IA

staff.

Implementation was with

Superpave specs in July 2014, THIS

IS CURRENTLY THE

REQUIREMENT

October 31, 2014 19

AMRL’s Role

Accredits any of your labs that do testing for Caltrans Superpave mix designs

Do not need to accredit basic labs (aka. only gradations, oil content, SE, etc.)

Contractor QC and Caltrans QA acceptance testing do not have to be AMRL accredited.

Accredits lab & equipment, does not certify each individual technician

Proficiency Sample Program

October 31, 2014 20

Caltrans’ IA Role

Technician Proficiency Testing

Technician Certification

◦ Still certify for HVEEM jobs

◦ Some test methods do not have

equivalent AASHTO methods.

Caltrans Laboratory Accreditation

Manual

Reference Sample Program

October 31, 2014 21

AMRL Fees

Application ($250 one time)

Admin Fees ($725 annually)

◦ $350 Base Fee

◦ 15 methods*$25/method

◦ Applied after 1st year

Basic Fees for 2 Scopes ($900 in assessment year)

Individual Test Fees ($2960 in assessment year)

Proficiency Samples ($1480 annually)

TOTAL: ≈$4135 on a year

Dispute Resolution

Third party lab used for dispute

resolution must be AMRL

accredited.

Test Method Changes

LP-9 RAP Combined Gradation:

Renamed CT 384

LP-12 WMA Foam:

Renamed CT 386

LP-13 Smoothness:

Renamed CT 387

Questions?

Comments?

Thank you to Caltrans for some of the information in this

presentation