Baengkoe, Kristoforus Sen (2024) Studi Penelitian Pengaruh Inhibitor Anorganik Terhadap Laju Korosi Baja Tulangan Dan Gaya Tekan Aksial Kolom Beton Bertulang Pedestal Terkorosi. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Corrosion of steel reinforcement can result in damage to reinforced concrete structures which can affect the strength of the structure. By using the inhibitor method, it is effective in preventing corrosion of reinforcing steel The research took the form of compressive force testing on pedestal reinforced
concrete columns according to ASTM C39 concerning (Determine the compressive strength of cylindrical concrete specimens such as mold cylinders and drill cores) and corrosion rate testing according to ASTM G31 concerning
(Standard Practice for laboratory immersion corrosion testing of metals) on reinforcing steel. The test objects are 15 pedestal reinforced concrete columns measuring 15 x 15 x 30 cm. The types of inhibitors used are sodium nitrite, calcium nitrite, and sodium nitrite. The process to accelerate corrosion of reinforcing steel is carried out by immersing the test object in a Nacl solution with a concentration of 3.5% for 10 days and using the galvanostatic method.
The average compressive strength of the sodium nitrite inhibitor was 422.00 kN and the corrosion rate was 9657.59 mPy, the average compressive strength using the calcium nitrite inhibitor was 394.00 kN and the corrosion rate was
111057.24 mPy, and the average compressive strength using the sodium nitrite inhibitor was 358.00 kN and the corrosion rate was 12515.21 mPy. So the type of inhibitor that inhibits the smallest corrosion rate of the three types of inhibitors used in this research is the sodium nitrite type inhibitor which has the smallest corrosion rate of 9657.59 mPy

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