Characteristics and Modelling of Adiabatic Temperature Rise Rate of Medium-volumed Fly-Ash Concrete

QUAN Juan-juan; FU Shao-jun; YANG Ru-dong; CHEN Jian; ZHANG Kai-feng

doi:10.11988/ckyyb.20211097

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Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (4) : 134-140. DOI: 10.11988/ckyyb.20211097

HYDRAULIC STRUCTURE AND MATERIAL

Characteristics and Modelling of Adiabatic Temperature Rise Rate of Medium-volumed Fly-Ash Concrete

QUAN Juan-juan¹, FU Shao-jun², YANG Ru-dong¹, CHEN Jian¹, ZHANG Kai-feng³

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Abstract

Adiabatic temperature rise rate is the key factor affecting the adiabatic temperature rise of concrete. Indoor adiabatic temperature rise test was carried out on fly-ash (content 35%) concrete. The test was controlled with three initial temperatures and five water-binder ratios. The influence rules of initial temperature and water-binder ratio on the adiabatic temperature rise and the rise rate were examined. The standard of dividing three stages of adiabatic temperature rise rate was put forward. A three-stage model of adiabatic temperature rise rate of medium-volumed fly ash concrete was established. The model takes into consideration water-binder ratio, initial temperature and age, and predictes accurately the adiabatic temperature rise rate at each age.The results can provide reference for temperature adiabatic controlling of mass concrete.

Key words

adiabatic temperature rise / rate of adiabatic temperature rise / fly-ash concrete / initial temperature / water-binder ratio / three-stage model

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QUAN Juan-juan, FU Shao-jun, YANG Ru-dong, CHEN Jian, ZHANG Kai-feng. Characteristics and Modelling of Adiabatic Temperature Rise Rate of Medium-volumed Fly-Ash Concrete[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(4): 134-140 https://doi.org/10.11988/ckyyb.20211097

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