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Analytical model to parameterize the adiabatic temperature rise of concrete
Highlights Adiabatic temperature rise of concrete is necessary for the evaluation of thermal cracking, but its measurement is cumbersome. A recursisve algorithm to calculate the temperature rise at an adiabatic condition is proposed. The algorithm needs the isothermal calorimetry of cement binder at 20, 40, and 60 °C, which can be generalized using Arrhenius’ equation. In addition, the aggregate fraction in concrete is considered for a precise determination of its specific heat capacity.
Abstract Prediction of the temperature history of a mass concrete allows us to respond possible risks of cracking at early age and resultant serviceability. The adiabatic temperature rise of a given concrete mix is the input heat source for the prediction of the temperature history. However, its measurement requires a high volume of a sample and thus a practical test is limited with a few mixtures of candidates. This paper presented the model to compute the adiabatic temperature rise in concrete based on isothermal calorimetry of its paste binder, which is much simpler and practical. The model is verified by comparing its prediction results with the measurement. Furthermore, a guideline to develop an adiabatic temperature rise is also suggested using the model prediction. The model can be a promising method to practically predict the temperature profile of a mass concrete using the isothermal calorimetry.
Analytical model to parameterize the adiabatic temperature rise of concrete
Highlights Adiabatic temperature rise of concrete is necessary for the evaluation of thermal cracking, but its measurement is cumbersome. A recursisve algorithm to calculate the temperature rise at an adiabatic condition is proposed. The algorithm needs the isothermal calorimetry of cement binder at 20, 40, and 60 °C, which can be generalized using Arrhenius’ equation. In addition, the aggregate fraction in concrete is considered for a precise determination of its specific heat capacity.
Abstract Prediction of the temperature history of a mass concrete allows us to respond possible risks of cracking at early age and resultant serviceability. The adiabatic temperature rise of a given concrete mix is the input heat source for the prediction of the temperature history. However, its measurement requires a high volume of a sample and thus a practical test is limited with a few mixtures of candidates. This paper presented the model to compute the adiabatic temperature rise in concrete based on isothermal calorimetry of its paste binder, which is much simpler and practical. The model is verified by comparing its prediction results with the measurement. Furthermore, a guideline to develop an adiabatic temperature rise is also suggested using the model prediction. The model can be a promising method to practically predict the temperature profile of a mass concrete using the isothermal calorimetry.
Analytical model to parameterize the adiabatic temperature rise of concrete
Jeong, Dong Jin (author) / Kim, Taehwan (author) / Ryu, Jong-Hyun (author) / Kim, Jae Hong (author)
2020-11-08
Article (Journal)
Electronic Resource
English
Methodology Comparison for Concrete Adiabatic Temperature Rise
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