2013 C&MSPavements Specification Updates

Craig Landefeld, P.E.Construction Pavements Engineer

Major Changes

1. 499 – Concrete Generala) 255 – Full Depth Removal and Rigid Replacementb) 451 – Reinforced Portland Cement Concrete Pavementc) 452 – Non-Reinforced Portland Cement Concrete Pavementd) 455 – Quality Control Plan (QCP), Testing and Assurance…e) 608 – Walks, Curb Ramps, and Stepsf) 609 – Curbing, Concrete Medians, and Traffic Islands

2. 202 – Removal of Structures3. 251 – Partial Depth Pavement Repair4. 320 – Rubblize and Roll5. 423 – Crack Sealing6. 615 – Roads and Pavements for Maintaining Traffic

499 - Concrete General

• What drove the 499 specification changes?– Experience with quality products from QC/QA– Bridge deck evaluation research of 2008/2009

A B C D0%

10%

20%

30%

40%

50%

60%

70%

80%CHART 1: Overall Rating of Bridge Decks for Cracks

Class S + OptionsSpecial MixHigh Per-formanceQC/QA%

of B

ridg

e D

ecks

2013 - Specification Changes

2013 - Specification Changes

• What drove specification changes?– Experience with quality products from QC/QA– Bridge deck evaluation research of 2008/2009– ODOT inspection staff– Opportunity to use industry expertise– Best practices from other states• Only 1 reported state from 34 responding has

prescription mixes.• Texas Pavement example:

2013 - Specification Changes

2013 - Specification Changes

2013 - Specification Changes

2013 - 499 Concrete General

499 Specifications changes• A new mix table• Incorporates seven mix classes

Quantities per Cubic Yard - Provide Concrete with 6±2% Air Content

ClassDesign Strength

(psi)

Permeability [1]

Maximum (Coulombs)

Cementitious Content [2]

Minimum. (lbs)

AggregateRequirements

QC 1 4,000 at 28 days 2,000 520 Well-Graded

QC 2 4,500 at 28 days 1,500 520 Well-Graded

QC 3Special

As per plan1,500

or as per plan520 or as per plan Well-Graded

QC 4 Mass Concrete

As per plan [3]2,000

or as per plan470 [4] [5]

or as per planWell-Graded

QC MS [7]See Supplement

1126N/A 800 [7] 1 inch nominal max size

QC FS [7]See Supplement

1126N/A 900 [7] 1 inch nominal max size

QC Misc [6] 4,000 at 28 days   550 [7] 1 inch nominal max size

[1] AASHTO T277 Modified[2] Cementitious Content includes cement and pozzolan materials, denoted as Cm[3] Strength for Mass Concrete (QC 4) may be tested at either 28 or 56 days.[4] Do not use Type III cement or accelerating admixtures in mass concrete.[5] The maximum fly ash or GGBF slag content may be increased up to 50%.[6] For QC Misc mixes only –Water/Cementitious ratio limited to 0.50 maximum[7] Cement Only – No pozzolan materials 

499 Specification Changes

2013 - 499 Specification Changes

• Supplier owns the mix design for ALL QC mixes• Adjustments greater than 100 lbs. require Engineer

approval.• Supplier must maintain gradation in Zone II of the

Coarseness Factor Chart.

2013 - 499 Specification Changes

2013 - 499 Specification Changes

• Supplier owns the mix design for ALL QC mixes• Adjustments greater than 100 lbs. require Engineer

approval.• Supplier must maintain gradation in Zone II of the

Coarseness Factor Chart.• Temperature increase to ACI 95F .• Partial hand written batch tickets not

an option

2013 – Concrete Pavement Specification Changes

Seven Major Specifications were revised or created

• 499 Concrete - Generalo Prescription mixes Class F, C, S, HP, MS, FS are goneo Well graded aggregate requirements for both 451/452 and 511.

• 451/452 Concrete Pavement o Revisions to adopt SS 888 ODOT QC/QA pavement concrete specifications

• 455 Quality Control Plan, Testing QC/QA Concreteo Incorporates concrete quality control specifications for 511 and 451/452 into one document

• Supplements 1126/1127o S1126 Mix design submittal for JMFo S1127 New Pay factor criteria for 451, 452 and 511

Three other pavement specifications were updated to reflect material changes• 255 Full Depth Removal with Rigid Replacement

o RRCM - special mix design for rapid repair concrete was added.• 608 Walks, Curb Ramps, and Steps• 609 Curbing, Concrete Medians, and Traffic Islands

451-452 Specification Changes

• Materials section was updated to reflect the modifications to 499.

• References to 455 Quality Control Plan, Testing QC/QA Concrete

• Basis of Payment was modified to include “with QC/QA” or without.

• Longitudinal tining is now default. Transverse tining only allowed in small areas approved by Engineer.

• MIT Scan-2 Equipment is required for DBI paving.

• 451.18/S1127 Strength Pay Factors

2013 – “with QC/QA” or without?

Without QC/QA• Contractor performs QC to meet CMS 499. • ODOT Perform QC checks on project for compliance with

CMS 499 (slump, air, yield).• Beam for every 7500yd2 or fraction thereof daily by

ODOT.• Supplier/Contractor responsible to assure your well

graded aggregates are maintained in Zone II.• Core for every 2000yd2 by contractor per S1064.

With QC/QA• CMS 455 governs QC/QA in addition to CMS 499

455 Quality Control Requirements

• Incorporates concrete quality control specifications from SS 888 and SS 898 for 511 and 451/452 into one document

• Only when “with QC/QA” is specified in the bid item.o 451-452 – generally over 10,000 Sq Yd

• Sets minimum requirements for Contractor’s QualityControl Plan (QCP).

• Project Engineer must review and approve QCP and can require changes.

• Sets the Quality Assurance testing requirements for the ODOT Project Staff.o Side by side air content – 10% of QC Sampleso QA strength core for 1 in 10 QC Strength Cores

Supplement 1126 / 1127

S1126 - Developing and Submitting a Portland Cement Concrete Mix Design for Acceptance• New supplement for Suppliers submission for JMF.

S1127 - Pay Factors Determination for Pavement and Structure Concrete• Provides direction for pay factor determination and

example calculations.

• 202 – Steps Removed can be Lump or Footo Measure along the front edge of each tread.

Include the width of an integral wall in the width measurement.

• 251 – Partial Depth Pavement Repairo Partial Depth repairs can now be paid for by the

Square Yard or Cubic Yard.

320 – Rubblize and Roll

• Spec only applies to Reinforced Concrete Pavements.

• Construction test pit requirements are redefined.

• Particle size control has been adjusted.

423 – Crack Sealing, Hot applied

• All items can now be paid for in Square Yards (Square Meters), in addition to Pounds (Kilograms).

615 - Roads and Pavements for Maintaining Traffic

• Section 615.01 Description work has been revised to include the removal of appurtenances.

• For rigid pavements, deleted the use of Class C concrete and replaced it with Concrete, Class QC 1.

• Section 615.10 Basis of Payment: Roads for Maintaining Traffic will include the installation, maintenance, and removal of all fencing, earthwork, guardrail, sidewalk, and all other items as necessary to provide a complete, functional, and safe installation.

ODOT Pavements Specification Changes

2013 CMS

Questions??