Electrical Resistivity of Cement-Based Sensors under a Sustained Load

Abstract:

This research was to study the influence of a sustained load on the electrical resistivity of a cement-based sensor. The cement-based sensor in this study was made of cement paste having water to cement ratio of 0.4 with the addition of graphite powder at 2% and 4% by weight of cement and carbon fibers at 2% and 4% by volume. The sustained load was applied on the cement-based-sensor using a sustain machine to control a compressive force continually at 30% of its ultimate compressive strength for a period of 30 days. The test results showed that the sustained load induced a creep strain on the cement-based-sensor. The graphite incorporated cement-based sensor showed higher creep strain than the plain cement-based sensor while the carbon fiber cement-based sensor showed lesser. In addition, it was shown that the creep strains affect the electrical resistivity of the cement-based sensors.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 436-440
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.436
• Online since: May 2014
• Authors: Kraisit Loamrat, Manote Sappakittipakorn*, Piti Sukontasukkul
• Keywords: Carbon Fiber (CF), Cement-Based Sensor, Creep, Graphite Powder

References

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DOI: 10.1106/104538902031861

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DOI: 10.1016/j.cemconcomp.2004.09.001

[3] Azhari, F. and Banthia, N., (2010).

[4] Loamrat, K., Sappakittipakorn, M., Sukontasukkul, P., and Banthia, N. (2014).

[5] ASTM C512. Standard Test Method for Creep of Concrete in Compression, American Standard of Testing and Materials, (2010).