All-solid-state, long term stable, and embedded pH sensor for corrosion monitoring of concrete

Du, Zhenxing; Wang, Penggang; Chen, Zhaoyi; Cui, Dongbo; Jin, Zuquan; Zhang, Hai

doi:10.1016/j.jobe.2022.104978

Cited by 10 publications

(8 citation statements)

References 46 publications

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“…Corrosion in reinforcing steel is detected by measuring the electrical resistance between the steel and the concrete. This method, known as half-cell potential testing, measures the voltage difference between the steel and a reference electrode, such as a copper/sulfate electrode, embedded in the concrete [75]. These sensors can detect corrosion in the reinforcing steel by measuring the electrical resistance between the steel and the concrete or by measuring the potential difference between the steel and a reference electrode [66].…”

Section: Corrosion Sensormentioning

confidence: 99%

“…The reference junction is typically kept at a constant temperature, serving as a temperature measurement baseline. Thermocouples are commonly used in various industrial, scientific, and engineering applications to measure temperatures ranging from very low to very high [75,83]. The voltage generated by the thermocouple can be measured using a thermocouple meter or an instrument called a thermocouple amplifier, which amplifies the small thermocouple voltage to a level that can be read by a standard voltmeter [84].…”

Section: Thermocouplesmentioning

confidence: 99%

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Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Shilar,

Ganachari,

Patil

et al. 2024

Materials

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Structural health monitoring (SHM) is crucial for maintaining concrete infrastructure. The data collected by these sensors are processed and analyzed using various analysis tools under different loadings and exposure to external conditions. Sensor-based investigation on concrete has been carried out for technologies used for designing structural health monitoring sensors. A Sensor-Infused Structural Analysis such as interfacial bond-slip model, corroded steel bar, fiber-optic sensors, carbon black and polypropylene fiber, concrete cracks, concrete carbonation, strain transfer model, and vibrational-based monitor. The compressive strength (CS) and split tensile strength (STS) values of the analyzed material fall within a range from 26 to 36 MPa and from 2 to 3 MPa, respectively. The material being studied has a range of flexural strength (FS) and density values that fall between 4.5 and 7 MPa and between 2250 and 2550 kg/m3. The average squared difference between the predicted and actual compressive strength values was found to be 4.405. With cement ratios of 0.3, 0.4, and 0.5, the shear strength value ranged from 4.4 to 5.6 MPa. The maximum shear strength was observed for a water–cement ratio of 0.4, with 5.5 MPa, followed by a water–cement ratio of 0.3, with 5 MPa. Optimizing the water–cement ratio achieves robust concrete (at 0.50), while a lower ratio may hinder strength (at 0.30). PZT sensors and stress-wave measurements aid in the precise structural monitoring, enhanced by steel fibers and carbon black, for improved sensitivity and mechanical properties. These findings incorporate a wide range of applications, including crack detection; strain and deformation analysis; and monitoring of temperature, moisture, and corrosion. This review pioneers sensor technology for concrete monitoring (Goal 9), urban safety (Goal 11), climate resilience (Goal 13), coastal preservation (Goal 14), and habitat protection (Goal 15) of the United Nations’ Sustainable Development Goals.

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Section: Corrosion Sensormentioning

confidence: 99%

Section: Thermocouplesmentioning

confidence: 99%

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Shilar,

Ganachari,

Patil

et al. 2024

Materials

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“…working electrode and manganese and powder compaction method exhibited a dense and homogeneous microstructure, so it has great potential for consideration of the aggressive degree to concrete. But it is not clear to show exactly the percentage of corrosive degree and pH concentration still don't present particularly (Du et al, 2022). Moreover, the test results for the effect of acidic water on aggregate-bitumen adhesion have been shown in the acidic water with pH = 2 after 6 bitumen-covered aggregate particles.…”

Section: Introductionmentioning

confidence: 97%

Evaluation of the aggressive degree of the chemical components to concrete

Doan

2023

Preprint

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Evaluation and research on the aggressive degree to concrete were done in the previous research. However, the evaluation of aggressive certain degree in water to the concrete was evaluated comprehensively by the Viet Nam Standard “TCVN 3994:1985” and ISO 14911:1998. The results presented “water with chemical characteristics can’t create the aggression in concrete”, which shows pH concentration is 5 and CO2 corrosion is 20 mg/l; whereas ion Mg2+ is 1.5 g/l and SO42− is 0,25 g/l. The total salt content in the presence of evaporating surface obtains 12,5g/l. On the other hand, this paper considers water with the chemical name “Chlorite-Bicarbonate-Sodium-Magnesium” by the Kurlov formula and “TCVN 81:1981”. Especially, comprehensive consideration of chemical analysis that includes Cation (Ca2+; Mg2+; ∑(Fe2+; Fe3+; Na+; K+; and NH4+); Anion (Cl−; SO42−; HCO3−; CO32− and OH−); and the other special items analysis which includes Permanent and Temporary hardness; Alkalinity; CO2 free; CO2 corrosive; Total mineralization; pH value; Nitrite (NO2−); and Nitrate (NO3−). So research results can be used safely for the design or construction of the reinforcement concrete structures in My Thai Canal Bridge, Rach Gia town, Kien Giang province, Viet Nam, and Construction or Geotechnical as good reference documents in the future.

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“…A pH sensor used with an iridium oxide (IrOx) working electrode and manganese and powder compaction exhibited a dense and homogeneous microstructure, so this has great potential for determining the aggressive degree of concrete. However, the percentage of corrosive degree and pH concentration still is not expressed exactly (Du et al, 2022). Moreover, test results for the effect of acidic water on aggregate-bitumen adhesion have been shown to be pH = 2 after six bitumen-covered aggregate particles in acidic water.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive evaluation of the aggressive certain degree of the chemical components in water to concrete

Doan

2024

Front. Built Environ.

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Evaluation and research on the aggressive degree to concrete were done in the previous research. However, the evaluation of aggressive certain degree in water to the concrete was experimented comprehensively in the laboratory by the Viet Nam Standard “TCVN 3994:1985” and ISO 14911:1998. In addition, this paper considers water with the chemical name “Chlorite-Bicarbonate-Sodium-Magnesium” by the Kurlov formula and “TCVN 81:1981”. Especially, comprehensive consideration of chemical analysis that includes Cation (Ca2+; Mg2+; ∑(Fe2+; Fe3+; Na+; K+; and NH4+); Anion (Cl−; SO42−; HCO3−; CO32− and OH−); and the other special items analysis which includes Permanent and Temporary hardness; Alkalinity; CO2 free; CO2 corrosive; Total mineralization; pH value; Nitrite (NO2−); and Nitrate (NO3−). The research results presented “water with chemical characteristics can’t create the aggression in concrete,“ which shows pH concentration is 5 and CO2 corrosion is 20 mg/l (approximately 0.04%); whereas ion Mg2+ is 1.5 g/l (approximately 3%) and SO42− is 0,25 g/l (approximately 0.5%). The total salt content in the presence of an evaporating surface obtains 12,5 g/l (approximately 25%). So research results can be used safely for the design or construction of the reinforcement concrete structures in My Thai Canal Bridge, Rach Gia town, Kien Giang province, Viet Nam, and Construction or Geotechnical as good reference documents in the future.

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All-solid-state, long term stable, and embedded pH sensor for corrosion monitoring of concrete

Cited by 10 publications

References 46 publications

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Evaluation of the aggressive degree of the chemical components to concrete

Comprehensive evaluation of the aggressive certain degree of the chemical components in water to concrete

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