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Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
Design and construction of concrete roads
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Design and construction of concrete roads

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  • 1. OLUKAYODE ALAO ALXOLU001 2013-10-01 1 CIV5002Z: Structural Concrete Properties and Practice CIV5002Z: JOURNAL PAPER PRESENTATION DESIGN AND CONSTRUCTION OF CONCRETE ROADS
  • 2. 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
  • 3.  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
  • 4.  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
  • 5. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 5 TYPES OF RIGID PAVEMENTS Precast pre-stressed pavements (adopted from www.concreteconstruction.net)
  • 6.  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
  • 7. 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)
  • 8.  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
  • 9. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 9 TYPES OF RIGID PAVEMENTS RCC (adopted from www.specifyconcrete.org)
  • 10.  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
  • 11. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 11 TYPES OF RIGID PAVEMENTS Pervious concrete (adopted from www.tececo.com)
  • 12.  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
  • 13. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 13 FAILURE MODES OF RIGID PAVEMENT Transverse CrackingAlligator Cracking Longitudinal Cracking
  • 14. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 14 FAILURE MODES OF RIGID PAVEMENT Rutting
  • 15.  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
  • 16.  Preparation of the base layer 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 16 CONSTRUCTION PRACTICES Proper surface preparationPresence of leaves and mud
  • 17.  Concrete mixing and transport 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 17 CONSTRUCTION PRACTICES Drop concrete at low heights to stifle segregationContinuous batching from Readymix Plant
  • 18.  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
  • 19.  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
  • 20. 2013-10-01 CIV5002Z: Structural Concrete Properties and Practice 20 THANK YOU

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