Lega, Nikoley Millesantus (2024) Pengaruh Diameter Baja Tulangan Terkorosi Terhadap Laju Korosi Dan Kuat Lekat Beton. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Reinforcement corrosion causes weak bonds between reinforcement and concrete. One factor in the strength of the bond between reinforcing steel and concrete is its diameter. The use of a Larger diameter allows more surfaces to be exposed to the environment. This study is in the form of testing the bond strength and calculating the corrosion rate on concrete cylinders with corroded reinforcement. The test object is a cylinder measuring 15 x 30 cm with a concrete quality offc 25 Mpa. The variations in reinforcement diameter used are 8, bI0, and b12. There are I0 test objects for each diameter of reinforcing steel. Bond strength testing according to ASTM C1583/C1583M-13, Standard Test Method for Concrete Surface Tensile
Strength and Bond Strength or Tensile Strength of Concrete Repair Materials and Coatings with Direct Tension, testing is carried out when the concrete is 28 days old, and to calculate the corrosion rate according to the weight loss method according to ASTM G31-72, Standard Practice for Laboratory Dip Corrosion Testing of Metals. The results of the study showed that the larger the diameter ofthe corroded reinforcing steel, the greater the bond strength value on the concrete, the higher and the corrosion rate is smaller. The bond strength value and corrosion rate are found in corroded concrete with a diameter of12 of4.25 Mpa and 10686.36 Mpy, then corroded concrete with a diameter ofJO of3.57 Mpa and 26206.84 Mpy, and corroded concrete with a diameter of8 o/2.92 Mpa and 33953.48 Mpy.

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