Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode

Authors

  • Gunawan Budi Wijaya Department of Civil Engineering, Petra Christian University, Jl. Siwalankerto 121-131, Surabaya 60236, INDONESIA
  • David Pratama Lays Department of Civil Engineering, Petra Christian University, Jl. Siwalankerto 121-131, Surabaya 60236, INDONESIA
  • Hongky Haodiwidjaya Tanto Department of Civil Engineering, Petra Christian University, Jl. Siwalankerto 121-131, Surabaya 60236, INDONESIA
  • Daniel Tjandra Department of Civil Engineering, Petra Christian University, Jl. Siwalankerto 121-131, Surabaya 60236, INDONESIA

:

https://doi.org/10.9744/ced.21.2.84-88

Keywords:

Carbon fiber reinforced polymer laminate, graphite powder, half cell potential, impressed current cathodic protection system, pull-off test.

Abstract

The use of Carbon Fiber Reinforced Polymer (CFRP), for both strengthening material and anode for Impressed Current Cathodic Protection (ICCP) system, is being investigated.  The focus of this study is to develop the epoxy that has good bond strength and electrical conductivity. Graphite powder is used as conductive pigments with percentage ranges from 7.5% to 17.5%.  All specimens were partially submerged in 5% NaCl solution and induced with electrical current of 10 mA/m2 and 20 mA/m2 for 30 days. An average potential increase of 200 mV was recorded using half cell potential test. The application of 30 days ICCP up to current density of 20 mA/m2 did not affect the bond strength significantly and still complies with ACI recommendation. However, graphite content of more than 15% are found to be not workable and the bond strength is greatly reduced to less than 1 MPa This study concluded that the recommended graphite powder content shall be in the range of 10% to 15%.

References

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Published

2019-10-18

How to Cite

Wijaya, G. B., Lays, D. P., Tanto, H. H., & Tjandra, D. (2019). Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode. Civil Engineering Dimension, 21(2), 84-88. https://doi.org/10.9744/ced.21.2.84-88

Issue

Vol. 21 No. 2 (2019): SEPTEMBER 2019

Section

Articles

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