Open AccessStudy on the Correlation between Hydration Heat and Electrical Resistivity of the Cement Pastes with Polycarboxylate Superplasticizer
Author(s) -
Yaming Zheng,
Xiao Liu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/562/1/012115
Subject(s) - superplasticizer , exothermic reaction , electrical resistivity and conductivity , cement , materials science , composite material , hydration reaction , chemistry , organic chemistry , electrical engineering , engineering
Resistivity development curves and hydration heat curves of the cement pastes with the superplasticizer dosages of 0, 0.1%, 0.3% and 0.5% were tested. It is found that the resistivity of the cement pastes decreases and the peak time of hydration exothermic rate was delayed with the increase of superplasticizer dosage. The relationship between the resistivity and the total amount of hydration heat was established. By measuring the resistivity, the total amount of hydration exothermic heat of the cement pastes can be effectively predicted based on the correlation.