DOI QR코드

DOI QR Code

Effect of Steam Curing on Concrete Piles with Silica Fume

  • Yazdani, N. (Dept. of Civil Engineering, UT Arlington) ;
  • F. Asce, M. Filsaime (Civil Engineer, PBS&J) ;
  • Manzur, T. (Dept. of Civil Engineering, UT Arlington)
  • 투고 : 2009.08.05
  • 심사 : 2010.05.17
  • 발행 : 2010.06.30

초록

Silica fume is a common addition to high performance concrete mix designs. The use of silica fume in concrete leads to increased water demand. For this reason, Florida Department of Transportation (FDOT) allows only a 72-hour continuous moist cure process for concrete containing silica fume. Accelerated curing has been shown to be effective in producing high-performance characteristics at early ages in silica-fume concrete. However, the heat greatly increases the moisture loss from exposed surfaces, which may cause shrinkage problems. An experimental study was undertaken to determine the feasibility of steam curing of FDOT concrete with silica fume in order to reduce precast turnaround time. Various steam curing durations were utilized with full-scale precast prestressed pile specimens. The concrete compressive strength and shrinkage were determined for various durations of steam curing. Results indicate that steam cured silica fume concrete met all FDOT requirements for the 12, 18 and 24 hours of curing periods. No shrinkage cracking was observed in any samples up to one year age. It was recommended that FDOT allow the 12 hour steam curing for concrete with silica fume.

키워드

참고문헌

  1. ACI Committee 234 Report, Guide for the Use of Silica Fume in Concrete, ACI Manual of Concrete Practice: Materials and General Properties of Concrete (Part 1): 234R1 - 234R51 American Concrete Institute, Farmington Hills, MI, 1997.
  2. Scali, M. J., Chin, D., and Berke, N. S., “Effect of Microsilica and Fly Ash upon the Microstructure and Permeability of Concrete,” Proceedings, 9th International Conference on Cement Microscopy, Duncanville, TX: International Cement Microscopy Association, 1987, pp. 375-387.
  3. ACI Committee 363 Report, High Strength Concrete, ACI Manual of Concrete Practice: Materials and General Properties of Concrete (Part 1): 363R1 - 363R55, American Concrete Institute, Farmington Hills, MI, 1997.
  4. Ozyildirim, C., “Concrete Bridge-Deck Overlays Containing Silica Fume,” CANMET/ACI International Workshop on the Use of Silica Fume in Concrete, April 7- 9, 1991, Washington, DC, V.M. Malhotra, Ed., pp. 305-312.
  5. Cement Association of Canada, Autoclave Steam Curing and Atmospheric Steam Curing, Cement Association of Canada. 2004.
  6. Thelend, D., “The Make-or-Break Process: With and Eye on the Bottom Line, the Producer Increasingly is Trying to Optimize the Curing Process,” The Concrete Producer, July 2003.
  7. ACI Committee 517.2 Report, “Accelerated Curing of Concrete at Atmospheric Pressure - State of the Art,” ACI Manual of Concrete Practice, American Concrete Institute, Farmington Hills, MI, 1992.
  8. Holland, T. C., “Working with Silica Fume in Ready-Mixed Concrete,” U.S.A Experience Proceedings, 3rd International Conference, Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete, SP-114, Farmington Hills, MI, Vol. 2, 1989, pp. 763-781.
  9. PCI Committee on Durability, “Guide to Using Silica Fume in Precast/Prestressed Concrete Products,” PCI Journal, Vol. 39, 1994, pp. 36-46. https://doi.org/10.15554/pcij.11011994.36.52
  10. Ayers, M. E. and Khan, M. S., “Overview of Fly Ash and Silica Fume Concrete: The Need for Rational Curing Standards,” Proceedings of V. Mohan Malhotra Symposium, Concrete Technology: Past, Present, and Future, SP-144, 1994, Farmington Hills, MI, pp. 605-622.
  11. Florida Department of Transportation, Standard Specifications for Road and Bridge Construction, Tallahassee, Florida, 2004.
  12. ASTM Designation: C 1240, Standard Specification for Silica Fume for Use as a Mineral Admixture in Hydraulic Cement Concrete, Mortar, and Grout, Philadelphia, PA, 2003.
  13. ASTM Designation: C 684, Standard Test Method for Making, Accelerated Curing, and Testing Concrete Compression Test Specimens, Philadelphia, PA, 1999.
  14. Kosmatka, S. H. and Panarese, W. C., Design and Control of Concrete Mixtures, 13th e.d. Portland Cement Association, 1994.
  15. ASTM Designation: C 39, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, Philadelphia, PA, 2003.
  16. ASTM Designation: C 157, Standard Test Method for Length Change of Hardened Hydraulic Cement Mortar and Concrete, Philadelphia, PA, 2003.
  17. ASTM Designation: C 403, Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance, Philadelphia, PA, 1999.
  18. ASTM Designation: C 192, Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory, Philadelphia, PA, 2001.
  19. ASTM Designation: C 143, Standard Test Method for Slump of Portland Cement Concrete, Philadelphia, PA, 2003.
  20. ASTM Designation: C 1064, Standard Test Method for Temperature of Freshly Mixed Portland Cement Concrete, Philadelphia, PA, 1999.
  21. ASTM Designation: C 173, Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method, Philadelphia, PA, 2003.
  22. ASTM Designation: C 490, Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete, Philadelphia, PA, 2000.
  23. Branson, D. E., Deformation of Concrete Structures, McGraw-Hill International Book Co., 1977.

피인용 문헌

  1. Stable Failure-Inducing Micro-Silica Aqua Epoxy Bonding Material for Floating Concrete Module Connection vol.7, pp.11, 2015, https://doi.org/10.3390/polym7111520
  2. Performance Based Evaluation of Concrete Strength under Various Curing Conditions to Investigate Climate Change Effects vol.7, pp.8, 2015, https://doi.org/10.3390/su70810052