Effect of Embedded Depth of Copper-Nickel-Plated Sensor Probes on Compressive Strength Development of Mortar

Chaehyeon Kim, Yooseob Song, Junhwi Cho, Julian Kang and Jaeheum Yeon ()
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Chaehyeon Kim: Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
Yooseob Song: Department of Civil and Environmental Engineering, University of Alabama in Huntsville, Huntsville, AL 35899, USA
Junhwi Cho: Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea
Julian Kang: Department of Construction Science, Texas A&M University, College Station, TX 77843, USA
Jaeheum Yeon: Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea

Sustainability, 2023, vol. 15, issue 14, 1-15

Abstract: Embedded sensors are widely employed for the structural health monitoring of structures constructed with concrete or mortar. Despite embedded sensors being actively used, there has been no study on whether or not the sensor probe placement within structures made of concrete or mortar influences their structural stability. The strength of small structures in particular could be affected by sensor probes embedded within them. To address the lack of research in this area, this study analyzed the effect of embedding positions of sensor probes on the compressive strength development of mortar. After the production of mortar specimens with the depth of the embedded sensor being controlled by the developed mold, compressive strength tests were conducted, and then test results were verified through finite element analysis. For testing, copper–nickel-plated sensor probes were embedded within the mortar because these sensor probes are popular commercial probes. The test results show that the compressive strength was 7.1 MPa when the sensor probe was embedded at a depth of 5 mm. In contrast, the compressive strength was 28.2 MPa at a depth of 30 mm. Since the compressive strength without the embedded sensor probe was 29.8 MPa, considering the results of this study, it is highly recommended that copper–nickel-plated sensor probes be embedded at least 30 mm from the surface of mortar structures.

Keywords: embedded sensor probe; copper–nickel-plated sensor probe; mortar; compressive strength test; finite element analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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