Pavements Specification Updates

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25 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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2013 C&MS

Pavements Specification Updates

Craig Landefeld, P.E.

Construction Pavements Engineer

Major Changes

1.
499


Concrete General

a)
255


Full Depth Removal and Rigid Replacement

b)
451


Reinforced Portland Cement Concrete Pavement

c)
452


Non
-
Reinforced
Portland Cement Concrete
Pavement

d)
455


Quality Control Plan (QCP), Testing and Assurance…

e)
608


Walks, Curb Ramps, and Steps

f)
609


Curbing, Concrete Medians, and Traffic Islands

2.
202


Removal of Structures

3.
251


Partial Depth Pavement Repair

4.
320


Rubblize

and Roll

5.
423


Crack Sealing

6.
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

0%
10%
20%
30%
40%
50%
60%
70%
80%
A
B
C
D
% of Bridge Decks

CHART 1: Overall Rating of Bridge Decks for Cracks

Class S + Options
Special Mix
High Performance
QC/QA
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

Class

Design Strength

(psi)

Permeability
[1]

Maximum
(Coulombs)

Cementitious
Content
[2]

Minimum
. (lbs)

Aggregate

Requirements

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 3

Special

As per plan

1,500

or as per plan

520
or
as per plan

Well
-
Graded

QC 4 Mass
Concrete

As per plan
[3]

2,000

or as per plan

470

[4] [5]

or as per plan

Well
-
Graded

QC MS
[7]

See Supplement
1126

N/A

800
[7
]

1 inch nominal
max
size

QC FS
[7]

See Supplement
1126

N/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 95

F .


Partial
hand written batch tickets not


an
option


2013


Concrete Pavement Specification
Changes

Seven Major Specifications were revised or created




499 Concrete
-

General

o
Prescription mixes Class F, C, S, HP, MS, FS are gone

o
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 Concrete

o
Incorporates
concrete quality control specifications for
511
and
451/452
into one
document


Supplements 1126/1127

o
S1126 Mix design submittal for JMF

o
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
t
ining

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 7500yd
2

or fraction thereof daily by
ODOT.


Supplier/Contractor
responsible to assure your well
graded aggregates are maintained in Zone
II.


Core for every 2000yd
2
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 Quality

Control 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 Samples

o
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 Foot

o
Measure along the front edge of each tread.
Include the width of an integral wall in the width
measurement.


251


Partial Depth Pavement Repair

o
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??