Investigation of the interfacial transition zone between aggregate-cement paste by AC impedance spectroscopy

Kong, Lijuan; Hou, Lirong; Wang, Yuhua; Sun, Guogang

doi:10.1007/s11595-016-1460-2

Cited by 14 publications

(1 citation statement)

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“…It is known that the conductivity of ions in pore solution depends on the resistance both the continuous connected pores (R ccp = R s + R ct ) and discontinuous pores (R cp = R ccp ×R 1 /(R ct -R s )). Whereas, R s and R ct are calculated from real impedance values for the left and right intersections of the semicircle and x axis, respectively, in accordance with equation R = Z×(A/L), where A and L are the sample area and length, perpendicular and parallel to the direction of the applied current, respectively (Spragg et al, 2014;Kong et al, 2016;Ramu et al, 2021).…”

Section: Relation Between Eis Parameters and Compressive Strengthmentioning

confidence: 99%

Monitoring the hydration behavior of hardened cement paste affected by different environmental pH regimes

Zhu

Liu²,

Zhang³

2022

Front. Mater.

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The purpose of this paper is to investigate the hydration behavior of hardened Portland cement paste cured in different environmental pH values by compressive strength, XRD, TG-DTG and EIS. Meanwhile, a newly proposed equivalent circuit model is built to establish the correlation between the electrochemical parameters and compressive strength of cement paste. The results show that the matrix strength, hydration products and pore structure of hardened cement paste are significantly affected by different pH values. According to the in-situ nondestructive monitoring of EIS, the evaluating for the matrix strength of cement-based materials can be achieved by calculating the resistivity of discontinuous connected pores (Rcp) in the recommended equivalent circuit model.

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Section: Relation Between Eis Parameters and Compressive Strengthmentioning

confidence: 99%