Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions
This study investigates the piezoresistive (self-sensing) properties of short stainless-steel fiber-reinforced mortar under varying temperature conditions. Different reinforced mortars were produced by varying fiber and aggregate content. First, Electrical Impedance Spectroscopy (EIS) measurements w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Construction Materials |
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| Online Access: | https://www.mdpi.com/2673-7108/2/4/17 |
| _version_ | 1797624925900505088 |
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| author | Jesús N. Eiras François Duplan Cédric Payan |
| author_facet | Jesús N. Eiras François Duplan Cédric Payan |
| author_sort | Jesús N. Eiras |
| collection | DOAJ |
| description | This study investigates the piezoresistive (self-sensing) properties of short stainless-steel fiber-reinforced mortar under varying temperature conditions. Different reinforced mortars were produced by varying fiber and aggregate content. First, Electrical Impedance Spectroscopy (EIS) measurements were used to characterize the electrical properties of the mortar specimens. EIS measurements were performed at temperatures of 24 °C, 35 °C, and 50 °C. Second, to investigate the self-sensing capacity of the different composites, the fractional changes of electrical impedance at 1 kHz were monitored under two conditions: temperature variation alone (cooling down from 35 °C or 50 °C to room temperature), and temperature variation combined with cyclic compressive loading (up to 5 MPa). The results of the former were used to compensate for the effect of temperature variations in the latter. Both temperature and mechanical loading produced meaningful variations in the electrical impedance and piezoresistivity of the investigated composites. Conclusions are drawn with respect to the stress and temperature sensitivity of the composites. The real and imaginary parts of the electrical impedance of the mortar produced with the highest fiber volume fraction (0.01%) and higher aggregate content (volume fraction of 60%) were distinctly sensitive to temperature and stress, which suggests the possibility of using the same composite as a stress and temperature sensor. |
| first_indexed | 2024-03-11T09:49:33Z |
| format | Article |
| id | doaj.art-de7b6619f63c4a0aa6061f21b10d3d2d |
| institution | Directory Open Access Journal |
| issn | 2673-7108 |
| language | English |
| last_indexed | 2024-03-11T09:49:33Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Construction Materials |
| spelling | doaj.art-de7b6619f63c4a0aa6061f21b10d3d2d2023-11-16T16:22:52ZengMDPI AGConstruction Materials2673-71082022-10-012425827510.3390/constrmater2040017Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature ConditionsJesús N. Eiras0François Duplan1Cédric Payan2Aix Marseille Univ, Centrale Marseille, CNRS, LMA, 13453 Marseille, FranceAix Marseille Univ, CNRS, IUSTI, 13453 Marseille, FranceAix Marseille Univ, Centrale Marseille, CNRS, LMA, 13453 Marseille, FranceThis study investigates the piezoresistive (self-sensing) properties of short stainless-steel fiber-reinforced mortar under varying temperature conditions. Different reinforced mortars were produced by varying fiber and aggregate content. First, Electrical Impedance Spectroscopy (EIS) measurements were used to characterize the electrical properties of the mortar specimens. EIS measurements were performed at temperatures of 24 °C, 35 °C, and 50 °C. Second, to investigate the self-sensing capacity of the different composites, the fractional changes of electrical impedance at 1 kHz were monitored under two conditions: temperature variation alone (cooling down from 35 °C or 50 °C to room temperature), and temperature variation combined with cyclic compressive loading (up to 5 MPa). The results of the former were used to compensate for the effect of temperature variations in the latter. Both temperature and mechanical loading produced meaningful variations in the electrical impedance and piezoresistivity of the investigated composites. Conclusions are drawn with respect to the stress and temperature sensitivity of the composites. The real and imaginary parts of the electrical impedance of the mortar produced with the highest fiber volume fraction (0.01%) and higher aggregate content (volume fraction of 60%) were distinctly sensitive to temperature and stress, which suggests the possibility of using the same composite as a stress and temperature sensor.https://www.mdpi.com/2673-7108/2/4/17self-sensingcement-based compositepiezoresistive sensorsteel fibersElectrical Impedance Spectroscopytemperature compensation |
| spellingShingle | Jesús N. Eiras François Duplan Cédric Payan Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions Construction Materials self-sensing cement-based composite piezoresistive sensor steel fibers Electrical Impedance Spectroscopy temperature compensation |
| title | Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions |
| title_full | Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions |
| title_fullStr | Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions |
| title_full_unstemmed | Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions |
| title_short | Experimental Investigation on the Compressive Stress-Sensing Ability of Steel Fiber-Reinforced Cement-Based Composites under Varying Temperature Conditions |
| title_sort | experimental investigation on the compressive stress sensing ability of steel fiber reinforced cement based composites under varying temperature conditions |
| topic | self-sensing cement-based composite piezoresistive sensor steel fibers Electrical Impedance Spectroscopy temperature compensation |
| url | https://www.mdpi.com/2673-7108/2/4/17 |
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