한국건축시공학회지 (Journal of the Korea Institute of Building Construction)

  • 제14권3호
  • /
  • Pages.273-284
  • /
  • 2014
  • /
  • 1598-2033(pISSN)
  • /
  • 2233-5706(eISSN)
한국건축시공학회 (The Korean Institute of Building Construction)
권호 표지
DOI QR코드

DOI QR Code

Modeling of temperature history in the hardening of ultra-high-performance concrete

  • Wang, Xiao-Yong (Department of Architectural Engineering, College of Engineering, Kangwon National University)
  • 투고 : 2014.02.10
  • 심사 : 2014.04.11
  • 발행 : 2014.06.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Ultra-high-performance concrete (UHPC) consists of cement, silica fume (SF), sand, fibers, water and superplasticizer. Typical water/binder ratios are 0.15 to 0.20 with 20 to 30% silica fume. In the production of ultra-high performance concrete, a significant temperature rise at an early age can be observed because of the higher cement content per unit mass of concrete. In this paper, by considering the production of calcium hydroxide in cement hydration and its consumption in the pozzolanic reaction, a numerical model is proposed to simulate the hydration of ultra-high performance concrete. The heat evolution rate of UHPC is determined from the contributions of cement hydration and the pozzolanic reaction. Furthermore, by combining a blended-cement hydration model with the finite-element method, the temperature history in the hardening of UHPC is evaluated using the degree of hydration of the cement and the silica fume. The predicted temperature-history curves were compared with experimental data, and a good correlation was found.

키워드

참고문헌

  1. Graybeal B, Tanesi J. Durability of an Ultra high-Performance Concrete. Journal of Materials in Civil Engineering. 2007 Oct;19(10):850-4.
  2. Wang C, Dilger WH. Prediction of temperature distribution in hardening concrete. In: Spingenschmid R, editor. Proceeding of Thermal Cracking in Concrete at Early Ages; 1994 Oct 10-12; London, London: RILEM; 1995. p.21-8.
  3. Cook WD, Aitcin PC and Mitchell D. Thermal Stresses in Large High-Strength Columns. ACI Materials Journal. 1993 Feb;89(1):61-8.
  4. Swaddiwudhipong S, Shen D, Zhang MH. Simulation of the exothermic hydration process of Portland cement. Advances in cement research. 2002 Apr;14(2):61-9 https://doi.org/10.1680/adcr.2002.14.2.61
  5. Tian Y, Jin X, Jin N. Thermal cracking analysis of concrete with cement hydration model and equivalent age method. Computers and Concrete. 2013 Apr;11(4):271-89 https://doi.org/10.12989/cac.2013.11.4.271
  6. De Schutter G. Hydration and temperature development of concrete made with blast-furnace slag cement. Cement and Concrte Research. 1999 Jan; 29(1):143-9. https://doi.org/10.1016/S0008-8846(98)00229-4
  7. De Schutter G, Taerve L. Degree of hydration-based description of mechanical properties of early age concrete. Materials and Structures. 1996 Jul; 29(6):335-44. https://doi.org/10.1007/BF02486341
  8. Tomosawa F. Development of a kinetic model for hydration of cement. In: Chandra S, editor. Proceedings of tenth international congress chemistry of cement; 1997 Jun 2-6; Gothenburg, Gothenburg; Amarkai AB and Congrex Goteborg AB; 1997. p.51-58.
  9. Wang XY, Lee HS, Park KB , Kim JJ , Golden JS. A multi- phase kinetic model to simulate hydration of slag-cement blends. Cement & Concrete Composites. 2010 Jul; 32(6):468-77 https://doi.org/10.1016/j.cemconcomp.2010.03.006
  10. Maekawa K, Chaube R, Kishi T. Modeling of concrete performance: hydration, microstructure formation and mass transport. London and New York: ROUTLEDGE ;1998. 308 p.
  11. Lura P, Jensen OM, Breugel K. Autogenous shrinkage in high-performance cement paste: An evaluation of basic mechanisms. Cement and Concrete Research. 2003 Feb; 33(2):223-32 https://doi.org/10.1016/S0008-8846(02)00890-6
  12. Nguyen VT. Rice Husk Ash as a Mineral Admixture for Ultra High Performance Concrete [dissertation]. Netherlands: Delft University of Technology; 2011. 183 p.
  13. Bentz DP, Waller V, Larrard F. Prediction of adiabatic temperature rise in conventional and high performance concretes using 3-D microstructural model. Cement and Concrete Research. 1999 Feb;28(2):285-97
  14. Daryl LL. A first course in the finite element method. 3rd ed. Pacific Grove: Brooks/Cole; 2002. 696p.
  15. Maruyama I, Suzuki M, Sato R. Prediction of Temperature in Ultra High-Strength Concrete Based on Temperature Dependent Hydration Model. In: Henry G. Russell, editor. ACI SP-228, Proc. of 7th Int. Symp on High Performance Concrete. Washington DC:ACI; 2005. p.1175-86.