DOI QR코드

DOI QR Code

The Effect of Heat Curing Methods on the Protection against Frost Damage at Early Age of the Concrete Under Extremely Cold Climate

  • Jung, Eun-Bong (Department of Architectural Engineering, Cheong-Ju University) ;
  • Shin, Hyun-Sup (Lafarge Halla Cement Sales Division Jungbu Office) ;
  • Han, Min-Cheol (Department of Architectural Engineering, Cheong-Ju University)
  • Received : 2013.04.19
  • Accepted : 2013.10.01
  • Published : 2013.12.20

Abstract

This study aimed to examine whether heat curing methods of concrete subjected to $-10^{\circ}C$ could be effective by varying the combination of heating cable and surface heat insulations. Three different concrete specimens incorporating 30% fly ash with 50% W/B were fabricated to simulate wall, column and slab members with dimensions of $1600{\times}800{\times}200$ mm for slab, $800{\times}600{\times}200$ mm for wall and $800{\times}800{\times}800$ mm for column. For heat curing combinations, Type-1 specimens applied PE film for slab, plywood for wall and column curing. Type-2 specimens applied double layer bubble sheet (2LB) and heating coil for slab, and 50 mm styrofoam for wall and column curing. Type-3 specimen applied 2LB for slab, electrical heating mat for wall and column inside heating enclosure. The test results revealed that the temperature of Type 1 specimen dropped below $0^{\circ}C$ beginning at 48 hours after placement due to its poor heat insulating capability. Type 2 and 3 specimens maintained a temperature of around $5{\sim}10^{\circ}C$ after placement due to favorable heat insulating and thermal resistance.

Keywords

References

  1. Korhonen CJ. Antifreeze admixtures for cold regions concreting : a literature review. Special Report No. SR 90-32, Hanover, N.H., 1990 Sept;14
  2. Korhonen CJ, Cortez ER. Antifreeze admixtures for cold weather concreting. Concrete International. 1991 Mar;13(3):38-41.
  3. Damron Floyd J. Design/construction consideration for subarctic wastewater plant, Journal of Cold Regions Engineering. ASCE, 1987 Sept;1(3):133-44. https://doi.org/10.1061/(ASCE)0887-381X(1987)1:3(133)
  4. Alfred R. Mangus. Air structure protection of cold weather concreting. Concrete International. 1988 Oct;10(10):22-6.
  5. Fukai A, Sugiyama M. Application and Research of the Housing Base Concrete to the Curing Using New Heating Sheet. ACI Special Publication. 2006 Sep;1(235):257-68.
  6. Pekar JW. Concreting in alaska. Concrete International. 1988 Oct:10(10):28-30.
  7. Han CG, Han MC, Baek DH. Analysis on the heat insulation performance of cold weather concrete according to change of laid construction conditions of double bubble sheets. Journal of Korea Institute of Building Construction. 2010 Dec;10(5):121-9. https://doi.org/10.5345/JKIC.2010.10.5.121
  8. Han CG, Han MC, Baek DH, Son HJ, Hong SM. Temperature history of concrete according to the covering method of double layer bubble sheet. Proceeding of Korea Institute of Building Construction; 2010 May; Seoul(Korea). Seoul (Korea): Korea Institute of Building Construction; 2010. p. 71-2.
  9. Han CG, Han MC, Koh KT, Ahn SK, Jung SH, Han SY, Temperature history of the slab concrete subjected to -$10^{\circ}C$ depending on the combination of heating cable and insulation heat curing, Proc. of Korea Concrete Institute, 2011 Nov; Seoul (Korea). Pyeong Chang (Korea): Korea Concrete Institute; 2011. p. 407-8.
  10. Lee GC, Han MC, Baek DH, Koh KT. Effect of heat curing method on the temperature history and strength development of slab concrete for nuclear power plant structures in cold climates. Journal of Korean Nuclear Society. 2012;44(5):523-34.
  11. Architectural Institute of Japanese. Recommendation for Practice cold weather concreting. 1st ed. Tokyo (Japan): Architectural Institute of Japanese; 2010. 359 p.
  12. Han MC. Estimation of compressive strength of the fly ash substitution cement mortar by equivalent age. Journal of Korean Recycled Construction Resources Institute. 2012 Dec;7(4):121-7.
  13. Han MC, Son HJ. The effect of heat curing method on the temperature history of the fly ash concrete subjected to extremely low temperature. Journal of Korean Recycled Construction Resources Institute. 2012 Sep;7(3):85-90.

Cited by

  1. Prevention of Early Frost Damage of the Concrete under Severely Low Temperature according to Heat Curingmethods vol.16, pp.1, 2016, https://doi.org/10.5345/JKIBC.2016.16.1.067