OLUKAYODE

ALAO

ALXOLU001

2013-10-01 1 CIV5002Z: Structural Concrete Properties and

Practice

CIV5002Z: JOURNAL

PAPER PRESENTATION

DESIGN AND CONSTRUCTION OF

CONCRETE ROADS

INTRODUCTION

TYPES OF RIGID PAVEMENTS

FAILURE MODES OF RIGID PAVEMENT

PAVEMENT DESIGN METHOD IN SOUTH AFRICA

CONSTRUCTION PRACTICES

SUMMARY AND CONCLUSION

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 2

PRESENTATION OUTLINE

CONCRETE ROADS/RIGID PAVEMENTS - A pavement with road surface of concrete on a gravel base and subbase, with or without steel reinforcement and often with transverse joints.

Load Transfer Mechanism

Economics of Rigid Pavement over Flexible Pavements Longer relative service life

Maintenance free over designed lifespan

Quick construction

High reflective surface

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 3

INTRODUCTION

Precast Pre-stressed pavements

Conventional concrete pavements

Joint Plain Concrete Pavements (JPCP)

Joint Reinforced Concrete Pavements (JRCP)

Continuously Reinforced Concrete Pavements (CRCP)

Ultra-thin Reinforced Concrete Pavements (UTRCP)

Roller concrete compacted pavements (RCC)

Pervious or porous concrete pavement

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 4

TYPES OF RIGID PAVEMENTS

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 5

TYPES OF RIGID PAVEMENTS

Precast pre-stressed pavements (adopted from www.concreteconstruction.net)

Precast Pre-stressed pavements

Conventional concrete pavements

Joint Plain Concrete Pavements (JPCP)

Joint Reinforced Concrete Pavements (JRCP)

Continuously Reinforced Concrete Pavements (CRCP)

Ultra-thin Reinforced Concrete Pavements (UTRCP)

Roller concrete compacted pavements (RCC)

Pervious or porous concrete pavement

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 6

TYPES OF RIGID PAVEMENTS

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 7

TYPES OF RIGID PAVEMENTS

CRCP (adopted from www.eupave.eu) JPCP (adopted from onlnemanuals.txdot.gov)

Precast Pre-stressed pavements

Conventional concrete pavements

Joint Plain Concrete Pavements (JPCP)

Joint Reinforced Concrete Pavements (JRCP)

Continuously Reinforced Concrete Pavements (CRCP)

Ultra-thin Reinforced Concrete Pavements (UTRCP)

Roller concrete compacted pavements (RCC)

Pervious or porous concrete pavement

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 8

TYPES OF RIGID PAVEMENTS

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 9

TYPES OF RIGID PAVEMENTS

RCC (adopted from www.specifyconcrete.org)

Precast Pre-stressed pavements

Conventional concrete pavements

Joint Plain Concrete Pavements (JPCP)

Joint Reinforced Concrete Pavements (JRCP)

Continuously Reinforced Concrete Pavements (CRCP)

Ultra-thin Reinforced Concrete Pavements (UTRCP)

Roller concrete compacted pavements (RCC)

Pervious or porous concrete pavement

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 10

TYPES OF RIGID PAVEMENTS

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 11

TYPES OF RIGID PAVEMENTS

Pervious concrete (adopted from www.tececo.com)

Cracking – Alligator, Transverse, Longitudinal

Joint deficiencies

Surface defects - Rutting

Miscellaneous distresses – classified as blow -ups, faulting of

transverse joints and cracks, lane -to-shoulder drop-off, lane-

to-shoulder separation, patch deterioration, and water

bleeding and pumping

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 12

FAILURE MODES OF RIGID PAVEMENT

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 13

FAILURE MODES OF RIGID PAVEMENT

Transverse Cracking Alligator Cracking

Longitudinal Cracking

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 14

FAILURE MODES OF RIGID PAVEMENT

Rutting

cncPave is a computer simulation program whose purpose is

to facilitate competent decision -making when designing

concrete pavements.

Standards of serviceability are determined by the road

engineer.

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 15

PAVEMENT DESIGN METHOD IN SOUTH

AFRICA

Preparation of the base layer

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 16

CONSTRUCTION PRACTICES

Proper surface preparation Presence of leaves and mud

Concrete mixing and transport

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 17

CONSTRUCTION PRACTICES

Drop concrete at low heights to stifle segregation Continuous batching from Readymix Plant

Concrete paving

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 18

CONSTRUCTION PRACTICES

Slip form for accurate level Paver wheels so sit on level surface

Use of supersmoother for finer finish Sawn Joints

SUMMARY

Proper design and its accurate execution ensures durable and

structurally sound rigid pavements.

The choice of a pavement material or method requires careful

consideration, accurate analysis and total commitment.

CONCLUSION

Current trends show that concrete pavements are the prime

choice compared to flexible pavements.

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 19

SUMMARY AND CONCLUSION

2013-10-01 CIV5002Z: Structural Concrete Properties and

Practice 20

THANK YOU