DESIGN OF CEMENT CONCRETE (PCC) PAVEMENT

1 OVERVIEW

Design Concept: Concrete slab behaves as a beam that directly supports traffic loading.

Composition

Slab

To support traffic load

Water-proof on the surface

Cement + Aggregate + Water

Sub-base

To support upper slab

To provide proper drainage

To prevent freezing/thawing

Gravel + Sand

Types of PCC Pavements

Comparison of Different PCC Pavements

Comparison of AC and PCC Pavements

Statistics on PCC Pavements

2 PCC DESIGN METHODS

Comparisons

Applications

3 AASHTO DESIGN METHODS

3.1 OVERVIEW

Comparison

Design Inputs

Design Procedure

3.2 ’86 DESIGN PROCEDURE

3.2.1 SLAB THICKNESS DESIGN FOR JPCP AND JRCP

3.2.1.1 MODULUS OF SUBGRADE REACTION, K

3.2.1.2 EFFECTIVE MODULUS OF SUBGRADE REACTION

3.2.1.3 LOSS OF SUBGRADE SUPPORT

3.2.1.4 OTHER INPUT VARIABLES

3.2.1.5 DETERMINATION OF SLAB THICKNESS

3.2.2 SLAB THICKNESS DESIGN FOR CRCP

3.3 국내 포장설계법

설계도표(I): pt = 2.5, J = 3.2 가정

설계도표(II)

3.4 국내 포장설계 예제 (도로설계편람, 국토해양부, 2000)

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