Electronic Theses and Dissertation

Reference electrode adalah salah satu komponen alat ukur potensial korosi, selama ini reference electrode yang dipakai bergantung kepada produk komersial yang harganya relatif mahal sehingga jarang diaplikasikan sebagai disposable reference electrode yang ditanam langsung pada beton bertulang untuk pemantauan korosi. Saturated calomel electrode (SCE) dan silver-silver chloride electrode (Ag/AgCl) merupakan elektroda yang umum digunakan pada proses pengukuran nilai potensial korosi. Penelitian ini bertujuan untuk mengembangkan disposable liquid-based Cu/CuSO4 reference electrode agar dapat digunakan secara disposable pada baja tulangan. Adapun reference electrode yang dikembangkan dalam penelitian ini adalah reference electrode liquid-based Cu/CuSO4. Disposable liquid-based Cu/CuSO4 reference electrode dibuat dengan komponen utama tabung plastik sebagai body, copper cable sebagai konduktor, CuSO4 sebagai elektrolit dan kapas sebagai porous plug. Jumlah reference electrode yang dibuat pada penelitian ini adalah 10 disposable liquid-based Cu/CuSO4 reference electrode. Pengujian open circuit potential (OCP) dilakukan untuk menguji stabilitas disposable liquid-based Cu/CuSO4 reference electrode dengan menggunakan metode voltametri selama 10 menit dan 10 kali pengulangan pada setiap reference electrode Cu/CuSO4, serta perbandingan dengan reference electrode Ag/AgCl komersial. Disposable liquid-based Cu/CuSO4 reference electrode telah berhasil dikembangkan. Hasil pengukuran nilai potensial korosi menunjukkan grafik yang cukup stabil dari setiap pengujian disposable liquid-based Cu/CuSO4 reference electrode dan setelah dibandingkan dengan reference electrode Ag/AgCl komersial nilai error relative setiap reference electrode liquid-based Cu/CuSO4 berada dibawah 3,3%. Hasil tersebut mengindikasikan bahwa disposable liquid-based Cu/CuSO4 reference electrode dapat digunakan untuk pengukuran nilai potensial korosi.
Kata kunci: Liquid-based, Reference Electrode, Disposable, Korosi.

The reference electrode is one of the components of the corrosion measuring instrument. So far, the reference electrode has the potential to be used for commercial products which are relatively expensive, so they are rarely applied as disposable reference electrodes that are planted directly on concrete to monitor corrosion. Saturated calomel electrode (SCE) and silver-silver chloride electrode (Ag/AgCl) are electrodes that are commonly used in the process of measuring corrosion potential values. This study aims to develop a single-use liquid-based Cu/CuSO4 reference electrode that can be used in single-use reinforcing steel. The reference electrode developed in this research is a reference electrode based on Cu/CuSO4 liquid. Disposable liquid based Cu/CuSO4 reference electrodes are made with the main components of a plastic tube as a body, copper wires as a conductor, CuSO4 as an electrolyte and cotton as a porous plug. The number of reference electrodes made in this study were 10 Cu/CuSO4 reference electrodes made from disposable liquids. The open circuit potential (OCP) test was carried out to test using a single-use liquid-based Cu/CuSO4 reference electrode using the voltammetric method for 10 minutes and 10 times in a row on each Cu/CuSO4 reference electrode, as well as a comparison with a commercial Ag/AgCl reference electrode. Disposable liquid-based Cu/CuSO4 reference electrodes have been successfully developed. The results of the corrosion potential measurement show a fairly stable graph from each test of the disposable liquid-based Cu/CuSO4 reference electrode and after being compared with the commercial Ag/AgCl reference electrode, the relative error of each Cu/CuSO4 liquid-based reference electrode is below 3.3%. These results indicate that a disposable liquid-based Cu/CuSO4 reference electrode can be used to measure the corrosion potential value. Keywords: Liquid based, Reference Electrode, Disposable, Corrosion.