DOI QR코드

DOI QR Code

Prediction of Temperature and Moisture Distributions in Hardening Concrete By Using a Hydration Model

Park, Ki-Bong

  • 투고 : 2012.09.10
  • 심사 : 2012.12.14
  • 발행 : 2012.12.30

초록

This paper presents an integrated procedure to predict the temperature and moisture distributions in hardening concrete considering the effects of temperature and aging. The degree of hydration is employed as a fundamental parameter to evaluate hydro-thermal-mechanical properties of hardening concrete. The temperature history and temperature distribution in hardening concrete is evaluated by combining cement hydration model with three-dimensional finite element thermal analysis. On the other hand, the influences of both self-desiccation and moisture diffusion on variation of relative humidity are considered. The self-desiccation is evaluated by using a semi-empirical expression with desorption isotherm and degree of hydration. The moisture diffusivity is expressed as a function of degree of hydration and current relative humidity. The proposed procedure is verified with experimental results and can be used to evaluate the early-age crack of hardening concrete.

키워드

Degree of Hydration;Temperature Distribution;Moisture Distribution;Hardening Concrete;Modeling

참고문헌

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피인용 문헌

  1. Analysis of the compressive strength development of concrete considering the interactions between hydration and drying 2017, https://doi.org/10.5659/AIKAR.2012.14.4.153

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea