1. Self-Consolidating Concrete Applications Celik Ozyildirim, PhD, PE Virginia Concrete Conference 2011

2. 2 Outline Why SCC Applications –Precast and Prestressed Precast: Bebo arch Precast Prestressed: Bulb-T beams –Cast-in place applications Drilled shaft Repair Future

3. 3 Smart Road Bridge regular HPC column exhibits poor consolidation

4. 4 Regular HPC Beam poor consolidation

5. 5 Corrosion Poor consolidation

6. 6 SCC Self-Consolidating Concrete — fresh concrete that can flow around reinforcement and consolidate within formwork under its own weight without vibration and that exhibits no defect due to segregation or bleeding. ACI ConcreteTerminology

7. 7 High Workability Conventional SCC

8. 8 Regular Concrete

9. 9 SCC Arch Bridge (2001)

10. 10 Smooth Surface Finish

11. 11 Segregation

12. 12 No Segregation Tube of SCC 4 ft long

13. 13 Formwork

14. 14 Air Loss in Unstable SCC

15. 15 Precast Applications Arch Bridge, 2001 Test Beams, 2003 Rte 33 Beams, 2005

16. 16 SCC Arch Bridge – 2001 Arch length of 45 ft First SCC application 5,000 psi 2500 coulombs

17. 17 Arch Bridge Properties at 28 Days Batch Comp. Strength (psi) Avg. Perm. (coul) UnroddedRodded Slag #17390----900 Slag #2767080201724

18. 18 Route 33 over Pamunkey River

19. 19 SCC Beams – Rte 33 (2005)

20. 20 Rte 33 Properties at 28 Days Property B1 (SCC) B2 (SCC) B3 (Regular) B4 (Regular) Comp. (psi)10,11010,7007,9607,610 E (10 6 psi)4.865.355.264.98 Splitting (psi)820755675565 Perm (coul)8699961,011985

21. 21 Bugholes – Rte 33 SC C Regular SCC Control

22. 22 SCC Beams – Rte 33 High slump flow Low slump flow

23. 23 Lightweight SCC Bridge: Rte 17 over Rte 15/29 in Fauquier County Two spans, each 97 ft 7 in. 53 in Bulb-T beams Minimum 8,000 psi and maximum 1500 coulombs

24. 24 LW SCC Test Beam 53 in Bulb-T, 65-ft long Min. 8000 psi Max. 120 lb/ft 3

25. 25 Drilled Shafts Route 28 over the Broad Run Two Bridges, 2006-2007 Each bridge has two abutments, two piers for a total of 24 drilled shafts. In one bridge, 12 drilled shafts has SCC

26. 26 Drilled Shaft – Route 28 SCC Control

27. 27 Drilled Shaft – Route 28

28. 28 Drilled Shaft – Route 28

29. 29 Drilled Shaft – Route 28

30. 30 Pile Repair with SCC Colonial Parkway, Jamestown October 2009 Barge damaged a pile Repaired with SCC

31. 31 Colonial Parkway

32. 32 Colonial Parkway

33. 33 Colonial Parkway

34. 34 Colonial Parkway

35. 35 Substructure Repair, 2010 Two bridge substructures at Altavista repaired with SCC Route 699 bridge backwalls Route 712 over Route 29 bypass Columns and pier caps repaired using SCC instead of shotcrete Anodes placed

36. 36 Route 699

37. 37 Route 699

38. 38 Route 699

39. 39 Route 699

40. 40 Route 712 over Route 29 Bypass

41. 41 Route 712

42. 42 Route 712

43. 43 Route 712

44. 44 Route 712

45. 45 Route 712

46. 46 FUTURE SCC in beams SCC in piers and pier caps at Nimmo Parkway over West Neck Creek. SCC drilled shafts SCC in repairs

47. 47 Conclusions SCC with high workability, proper strength, and adequate durability can be produced using locally available materials. Attention must be paid to formwork, segregation, the air-void system, and shrinkage.

48. Thank you. Celik Ozyildirim, PhD, PE Virginia Concrete Conference 2011