Piezoelectric behavior of polarized fresh cement pastes under the effect of different direct current voltages

Al-Qaralleh, Mohammad

doi:10.1016/j.rineng.2022.100430

Cited by 9 publications

(13 citation statements)

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“…The reference specimens were given a 000 in the location of the electric field, for example: DI000-3, the notations of all the specimens are shown in Table 1. More information about the experimental methods and properties of the materials can be found in a previous article by the author [29]. specimen were measured and recorded to be utilized in the bulk resistivity calculations later.…”

Section: Methodsmentioning

confidence: 99%

“…Utilizing the DC electrical field to polarize cement pastes while fresh has been previously presented by the author [28][29][30]. This polarization can enhance the intrinsic self-sensing properties of the cement pastes.…”

Section: Research Significancementioning

confidence: 99%

“…This technique has multiple advantages when compared to the others mentioned before. In addition, it showed good results in enhancing the piezoelectric properties of the cement paste [29]. The DC curing of fresh cement paste improves its intrinsic piezoelectric properties without the need of adding functional fillers.…”

Section: Introductionmentioning

confidence: 96%

“…The effect of polarizing of hardened cement pastes on its electrical properties will vanish after disconnecting the polarizing current. Polarization can be achieved by applying a uniform electrical field on the fresh cement paste specimen while curing [28,29]. This technique has multiple advantages when compared to the others mentioned before.…”

Section: Introductionmentioning

confidence: 99%

“…This observation indicates that the piezoelectric response of the treated specimens can be utilized in self-sensing applications. A recent study by the author [29] further investigated the piezoelectric behavior of freshly polarized specimens. The study reported the effect of using different values of the DC potential, the effect of the different types of mixing water, and the moisture content on the overall piezoelectric behavior, as well as, the bulk density of the hardened cement paste.…”

Section: Introductionmentioning

confidence: 99%

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Electromechanical properties of self-sensing cement pastes polarized while fresh

Al-Qaralleh¹

2023

J Appl Eng Science

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This work investigates the bulk resistivity, and the stress-strain relationship of polarized cement paste as indicators of its electromechanical properties. The polarizing of the cement paste specimens was achieved by applying a uniform direct current (DC) electric field through the fresh cement paste for 24 hours. A total of 24 specimens were prepared for this study, 7 of them were not cured under the effect of the DC electric field to serve as reference. 3 different electrical field values were utilized in this experiment, namely: 100 V.m-1, 200 V.m-1, and 500 V.m-1. 2 types of water were used for mixing the cement paste, namely: tap (T), and deionized (DI). The bulk resistivity values were measured in the direction parallel to the polarization, and the two other directions perpendicular to the polarization. The T water specimens were tested under uniaxial compression on the axis of polarization. The results show that the bulk resistivity of the specimens was increased as the curing electrical field increased. Mixing with T water also increased the bulk resistivity when compared to mixing with DI water. Polarizing the fresh cement paste has a significant effect on its mechanical properties such that the ultimate compressive strength decreased by 50%, and the failure strain increased by 500%. In addition, the polarized specimens showed some changes in its morphology when compared with the reference.

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Section: Methodsmentioning

confidence: 99%

Section: Research Significancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations