Study the impedance spectroscopy of early-age cement paste hydration process using Electrodeless impedance analyzer (EIA)

被引：5

作者：

Shao, Hongyu ^{[1
]}

Lin, Yongquan ^{[1
]}

Li, Zongjin ^{[2
]}

Tang, Shengwen ^{[3
]}

Ge, Guixi ^{[1
]}

机构：

[1] China Resources Cement Technol Res & Dev Co Ltd, Guangzhou 510460, Peoples R China

[2] Macau Univ Sci & Technol, Fac Innovat Engn, Macau, Peoples R China

[3] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 368卷

关键词：

Non -contacting impedance measurement; Electrodeless impedance analyzer; Impedance spectrum; Cement paste; Nyquist plot; Pore solution; ELECTRICAL-RESISTIVITY; PORE STRUCTURE; CONDUCTIVITY; CONCRETE; SPECTRA;

D O I：

10.1016/j.conbuildmat.2023.130439

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Electrodeless Impedance Analyzer (EIA) - a new non-contacting electrodeless impedance spectroscopy (IS) measurement device was recently invented to monitor and interpret the hydration process of cement pastes with different water to binder ratios and composites. A perfect arc was observed in the Nyquist plot, and cement pastes seem to have an inductive behavior which has never been recorded before. In order to trace back to the sources of the complex resistivity behavior of cement-based materials, electrolyte, the major conductive phase inside the composite matrix, was detected together with cement pastes. An equivalent circuit model for impedance spec-troscopy (IS) of cement paste has been proposed which seems quite different with previous models.

引用

页数：8

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