A practical heat of hydration model for concrete curing for geotechnical applications

Geotechnical Research

Peter J Bourne-Webb¹  Anthony Fisher²  David M G Taborda³  Ryan Yin Wai Liu³ 

[1] CERIS, Instituto Superior Tcnico, ULisboa, Lisbon, Portugal;Cementation Skanska, UK;Department of Civil and Environmental Engineering, Imperial College London, London, UK;

关键词: concrete heat of hydration;    geotechnical engineering;    piles;    thermal integrity profiling;   

DOI  :  10.1680/jgere.21.00054

来源: Telford

【 摘 要 】

Thermal integrity profiling (TIP) is a common non-destructive technique to evaluate the quality of construction of piles by analysing the temperature fields due to heat of hydration from freshly cast concrete piles. For this process to be accurate, a reliable concrete heat of hydration model is required. This paper proposes a practical and simple technique to calibrate a four-parameter model for the prediction of concrete heat of hydration. This model has been shown to be able to reproduce the evolution of heat of hydration measured in laboratory tests, as well as field measurements of temperature within curing concrete piles, as part of a TIP operation performed at a site in London. With the simplicity of the model and the small number of model parameters involved, this model can be easily and quickly calibrated, enabling quick predictions of expected temperatures for subsequent casts using the same concrete mix.

【 授权许可】

CC BY