Characterization and monitoring of cement-based systems using intrinsic electrical property measurements

McCarter, William John; Chrisp, T. M.; Starrs, G.; Blewett, J.

doi:10.1016/s0008-8846(02)00824-4

Cited by 108 publications

(45 citation statements)

References 16 publications

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“…The retarding effect of fly ash on hydration process appears in the resistivity parameters and compressive strength. The correlation electrical resistivity and compressive strength is plotted in Fig.6 as shown in Equation (4). It can be seen that the relationship exhibits a linear trend, and is independent on the fly ash incorporation.…”

Section: The Relationship Between Electrical Resistivity and Compressmentioning

confidence: 99%

“…(4) The compressive strength during 24 h to 48 h obtained from the resistivity measurement (using Equation 4) is compared with the experimental results of compressive strength as shown in Fig.7. It can be seen in Fig.7 that the measured results of compressive strength are reasonably close to the curves.…”

Section: The Relationship Between Electrical Resistivity and Compressmentioning

confidence: 99%

“…The second thing is that the measured parameter can be essentially correlated to the important properties regarding to hydration and its accurate physical meaning can be developed to assess hydration process. Electrical response characteristics measurement has appropriate sensitivity in monitoring the hydration of cementitious materials [1][2][3][4][5][6] . The partial replacement of cement by fly ash can lead to cementitious materials properties decrease at early ages as shown in reference 6.…”

Section: Introductionmentioning

confidence: 99%

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Early age properties of cementitious materials by electrical resistivity measurement

Wei

Xiao

Liao

2010

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Three cement pastes were prepared with the fixed water-binder ratio and different fly ash contents. The compression test and electrical resistivity measurement of the paste mixes were conducted during 48 h. The changes of the CH content and the non-evaporable water content in the cement-fly ash hydration systems with time were obtained by the thermal gravimetric analysis. The experimental results show that dilution effect of fly ash as micro-filler is dominant mechanism before 48 h, which appears to decrease in the CH content and the non-evaporable water content, also in compressive strength and electrical resistivity, with the increase of fly ash replacement. The relationships between CH content, non-evaporable water content and electrical resistivity show that electrical resistivity can be the indicators of hydration products CH and non-evaporable water. The correlation of the compressive strength f c and the electrical resistivity ρcan be obtained as f c ＝8.3429ρ＝6.7088 for the period of 48 h. The early age compressive strength can then be predicted by electrical resistivity measurement.

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Section: The Relationship Between Electrical Resistivity and Compressmentioning

confidence: 99%

Section: The Relationship Between Electrical Resistivity and Compressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Early age properties of cementitious materials by electrical resistivity measurement

Wei

Xiao

Liao

2010

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…Conversely, simple, direct detection of intrinsic electrical properties, e.g., direct current (dc) resistivity, of CBM during hydration was proposed [12,13]. The four-probe (Wenner method) resistivity measurement used a simple setup, where no embedded sensors and alignment were required.…”

Section: Introductionmentioning

confidence: 99%

Strength Correlation and Prediction of Engineered Cementitious Composites with Microwave Properties

et al. 2016

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This paper presents the results of microwave and mechanical measurements of engineered cementitious composites (ECCs) using a nondestructive microwave near-field detecting technique. The objective of this research is to investigate the correlations between effective conductance and compressive strength of ECCs at various curing ages under the influence of different initial water contents. Parallel measurements and regression analysis on compressive strength and microwave conductance were undertaken. It is shown that the strength evolution of ECCs can be accurately modeled and predicted by using microwave conductance at the early ages using bi-exponential functions. Compressive strength grows as a function of decreasing effective conductance, whereas the regression coefficients of the correlation models have a linear variation with water-to-binder ratios. These findings have highlighted the effectiveness of the microwave technique in detecting the variation of liquid phase morphology and pore structure.

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“…The development of the electrical resistivity with time can demonstrate the physical and chemical change from cement paste part. The electrical resistivity measurement has often been used to characterize hydration process of cement [3][4][5] , the effect on concrete inhibitors for steel in concrete [6] , the chloride diffusivity in concrete [7,8] , detection of damage during tensile loading of cement composites [9] , freezing of water in Portland cement paste [10] , water penetration in concrete [11] , setting time of concrete [12] , measuring the concrete internal moisture content [13] , and infl uence of aggregate fraction and mixture on the reliability of the rapid chloride permeability test [14,15] .…”

Section: Introductionmentioning

confidence: 99%

Influence of the aggregate volume on the electrical resistivity and properties of portland cement concretes

Wei

Xiao

2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The electrical resistivity of concretes with various aggregate volume fractions (V a ) of 0%-70% at water/cement (W/C) ratios of 0.4 and 0.5 during 1 day was monitored. It is found that the addition of normal aggregate to cement paste leads to a regular increase in concrete resistivity at each hydration stage and the electrical resistivity has a deeper increase for the lower W/C at a fi xed aggregate volume fraction. The number of normalized resistivity (NR) of concrete to its paste matrix was introduced, which is only a function of aggregate volume fraction (V a ). The quantitative relationships give an alternative method for the prediction of aggregate volume in the concrete. A logarithmic relation is established between the elastic modulus of concrete at 7 days or 28 days and the electrical resistivity of concrete at 1 day. The equations are obtained, the compressive strength of concrete at 7 days or 28 days can be determined by the electrical resistivity of concrete at 1 day and the used aggregate content in the concrete. The quantitative relationships give a non-destructive test (NDT) method for prediction of concrete elastic modulus and compressive strength.

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Characterization and monitoring of cement-based systems using intrinsic electrical property measurements

Cited by 108 publications

References 16 publications

Early age properties of cementitious materials by electrical resistivity measurement

Early age properties of cementitious materials by electrical resistivity measurement

Strength Correlation and Prediction of Engineered Cementitious Composites with Microwave Properties

Influence of the aggregate volume on the electrical resistivity and properties of portland cement concretes

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