Dae, Caecilia Viona Watu Muwa (2024) Pengaruh Laju Korosi Dan Diameter Baja Tulangan Yang Terkorosi Terhadap Gaya Tekan Kolom Beton Bertulang. Undergraduate thesis, Fakultas Teknik Sipil Universitas Merdeka Malang.

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Abstract

Corrosion of reinforcing steel can cause damage to reinforced concrete structures that seriously affect structural strength. There are several factors that can affect the corrosion of reinforcing steel, one of which is the diameter of the reinforcing steel. This study aims to determine the effect of corrosion rate and diamater of corroded reinforcing steel on the compressive force of reinforced concrete columns.
The research consisted of testing the corrosion rate and compressive force of reinforced concrete columns. The test specimens were in the form of columns with a size of 15 x 15 x 30 cm as many as 18 pieces. Variations of reinforcing
steel diameters used are Ø8, Ø10 and D10 mm. The process to accelerate corrosion of reinforcing steel is done by immersing the test specimens in a 3.5% concentration NaCl solution for 5 days using the galvanostatic method.
Compressive force testing was based on ASTM C39 on Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens and corrosion rate
testing was based on ASTM G 31-72 on Standard Practice for Laboratory Immersion Corrosion Testing of Metals, and was conducted at 28 days of concrete age.
The test results for the largest compressive force are in the corroded test piece with a reinforcing steel diameter of D10 of 456.7 kN, and the smallest compressive force is in the test piece with a reinforcing steel diameter of Ø8 of 433.333 kN. Meanwhile, the largest corrosion rate is in the test specimen with areinforcing steel diameter of D10 amounting to 69749,280 mpy, and the smallest corrosion rate is in the test specimen with a reinforcing steel diameter of Ø8 amounting to 27519,182 mpy

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