Seminario Internacional Construcción y Rehabilitación con Pavimentos de Hormigón Other Concrete Paving Operations
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Seminario Internacional Construcción y Rehabilitación con Pavimentos de Hormigón Other Concrete Paving Operations
- 1. Other Concrete Paving Operations Robert Rodden, P.E. www.robertrodden.com 5/25/2015 1 ConstructionandRehabilitationof ConcretePavements
- 2. Pervious Concrete Other Concrete Paving Operations 5/25/2015 2 ConstructionandRehabilitationof ConcretePavements
- 4. Construction Considerations • Need a good starting mixture design – Good quality rock, good quality admixtures, fibers don’t hurt, and maybe some sand • Need proper delivered workability, so you can: – Place to the desired density – Too high it clogs, too low it ravels – Cure quickly and sufficiently – Pervious dries quickly; increased raveling potential – Protect from damage caused by other construction traffic and runoff during and after curing 5/25/2015 ConstructionandRehabilitationof ConcretePavements 4
- 5. Reservoir Layer / Underdrain 5/25/2015 ConstructionandRehabilitationof ConcretePavements 5
- 6. This Layer might be very Thick! 5/25/2015 ConstructionandRehabilitationof ConcretePavements 6
- 9. Concrete Placement 5/25/2015 ConstructionandRehabilitationof ConcretePavements 9 Can be placed with a conveyor – not a pump
- 10. Color / Stain / Stamp Are Optional 5/25/2015 ConstructionandRehabilitationof ConcretePavements 10
- 11. Tools of the Trade 5/25/2015 ConstructionandRehabilitationof ConcretePavements 11
- 12. Tools of the Trade 5/25/2015 ConstructionandRehabilitationof ConcretePavements 12
- 13. Moving the Concrete (as necessary) 5/25/2015 ConstructionandRehabilitationof ConcretePavements 13 See any construction concerns?
- 16. Compact 5/25/2015 ConstructionandRehabilitationof ConcretePavements 16 Riser strips may or may not be used.
- 18. Edges can be Tricky to Compact 5/25/2015 ConstructionandRehabilitationof ConcretePavements 18
- 20. Cover with Plastic ASAP! 5/25/2015 ConstructionandRehabilitationof ConcretePavements 20 10 ft (3 m)
- 23. Joints: Formed vs. Saw Cut 5/25/2015 ConstructionandRehabilitationof ConcretePavements 23
- 26. …and Cure 5/25/2015 ConstructionandRehabilitationof ConcretePavements 26 • 7 days for just cement mixtures • 10 days if SCMs used
- 28. Plastic Only Works if Edges Sealed 5/25/2015 ConstructionandRehabilitationof ConcretePavements 28 GOOD BAD
- 30. Roller Compacted Concrete Other Concrete Paving Operations 5/25/2015 30 ConstructionandRehabilitationof ConcretePavements
- 31. Construction Considerations • Subgrade/subbase support RCC compaction • Tilt drum, horizontal shaft, pugmill, etc. mixers • Load into end-dump in thirds over length of box • Wash frequently to avoid unloading problems • COVER LOADS to avoid moisture loss • 45 mins from initial water contact to paving hopper – Transport time should be reduced if temperature above 80°F (27°C) 5/25/2015 ConstructionandRehabilitationof ConcretePavements 31
- 50. Industrial Concrete Pavement Other Concrete Paving Operations 5/25/2015 50 ConstructionandRehabilitationof ConcretePavements
- 51. Slipform or Fixed Form Practices Apply the Same as for Roadways 5/25/2015 ConstructionandRehabilitationof ConcretePavements 51
- 52. … But Slipforming = Strip Placement 5/25/2015 ConstructionandRehabilitationof ConcretePavements 52
- 53. Laser Screeding Increasingly Common 5/25/2015 ConstructionandRehabilitationof ConcretePavements 53
- 54. Joint Layout and Configuration Might Drive Which is Used! 5/25/2015 ConstructionandRehabilitationof ConcretePavements 54
- 55. Mix of Doweled JPCP and RCC in an Industrial Facility 5/25/2015 ConstructionandRehabilitationof ConcretePavements 55