Oregon Chapter of the

concretecakeΠολεοδομικά Έργα

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

87 εμφανίσεις

Oregon Chapter of the
American Concrete Institute


Luncheon Meeting

Design Considerations for
Concrete Pavement and
Ultra
-
Thin Whitetopping



Presented by: Brett I. Kesterson, PE

March 11, 2010

Agenda


Introduction


Concrete Pavement Design Inputs


PCC Pavement Specifications


Ultra
-
Thin Pavement Considerations


UTW Pavement Specifications


Construction Photos

PCC Pavement Design


Soil Resilient Modulus > Modulus
Subgrade Reaction



Falling Weight Deflectometer



Lab Testing of Soil

PCC Pavement Design


Traffic Counts



Classified Counts



ODOT Distribution for ESAL’s



Traffic Growth Estimate



30 year Design Life

PCC Pavement Design


Edge Conditions



Stresses Maximum at Edges



Tie Pavement to Curb & Gutter



Widen Pavement Beyond Travel Lane

PCC Pavement Design


Drainage



Permeable Asphalt Base


Permeable Aggregate Base


Lean Concrete Base


Subgrade Drains

PCC Pavement Design


Load Transfer at Joints



Aggregate Interlock



Dowelled Joints

PCC Pavement Specs


Compression / Flexural Strength


4000 psi / 650 psi



Fractured Rock


70% Two Faces



Water/Cement Ratio


0.40

PCC Pavement Specs



Proof (Grout) Rod



Tining vs Broom Finish



Saw Joint Spacing 10
-
12 Ft Square



Joint Filler


PCC Pavement Specs


Curing Compound


Pigment



Opening to Traffic


70% of 28 Day Design Strength



Price Reductions


Thickness


Strength

UTW Pavement Design


Soil Resilient Modulus > Modulus
Subgrade Reaction



Falling Weight Deflectometer



Lab Testing of Soil

UTW Pavement Design


Traffic Counts



Classified Counts



ODOT Distribution for ESAL’s



Traffic Growth Estimate



30 year Design Life

UTW Pavement Design


Sawing



Square Size Based on Thickness


2” = 2’ x 2’


3” = 3’ x 3’


4” = 4’ x 4’



Early Entry Saws


Soft Cut

UTW Pavement Specs


Compression


5000 psi



Fractured Rock


70% Two Faces



Water/Cement Ratio


0.40

UTW Pavement Specs


Structural Fibers


Synthetic Macro Fiber Reinforcement


ASTM C1116


3 lbs/CY



Coloring of Concrete


5 lbs/Sack of Cement

UTW Pavement Specs



Proof (Grout) Rod



Broom Finish



Saw Joint Spacing 2, 3, or 4 Ft Squares



Joint Filler


Not Needed


UTW Pavement Specs


Curing Compound


Pigment



Opening to Traffic


70% of 28 Day Design Strength



Price Reductions


Thickness


Strength

UTW NE 92
nd

Ave

Questions