Cembes, Natalia Evaliani (2024) Pengaruh Laju Korosi Dan Lama Rendaman Baja Tulangan Yang Terkorosi Terhadap Gaya Tekan Kolom Beton Bertulang. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Reinforced concrete is a composite material consisting of a mixture of concrete and reinforced with reinforcing steel. However, reinforcing steel is very susceptible to corrosion, especially in environments that have the potential to cause corrosion. The soaking time has an influence on the level of corrosion of reinforcing steel in concrete structures. Corrosion of reinforced concrete columns aims to determine the effect of the corrosion rate and soaking time of corroded reinforcing steel on the compressive force of reinforced concrete columns. in this research, 12 reinforced concrete columns measuring 15 x 15 x 30 cm were used with soaking times of 1 day, 3 days and 5 days with longitudinal reinforcement with a diameter of 4∅8 mm and stirrups ∅6-120 mm. The method used is the galvanostatic method by immersion in water and 3.5% NaCl solution. Compressive force testing was carried out at the age of 28 days using an ASTM C39 compression testing machine regarding the standard test method for compressive strength of cylindrical concrete specimens for cylindrical specimens and corrosion rate testing based on ASTM G 31-72 concerning Metal Laboratory Corrosion Tests. The test results for the largest reinforced concrete column compressive force were 493.4 kN at a soaking time of 1 day and the smallest compressive force was 416.1 kN at a soaking time of 5 days. Meanwhile, the largest corrosion rate was 72595 mpy at a soaking time of 1 day and the smallest corrosion rate was 28734 mpy at a soaking time of 5 days.

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