Investigasi pengaruh jumlah elemen anoda terhadap distribusi potensial korosi pada beton bertulang menggunakan BEM 3D

Abstract

Some cases of damage to concrete structures are caused by corrosion. Efforts to prevent corrosion of reinforced concrete are to apply a sacrificial anode cathodic protection system. This method has been widely applied and has been successful in preventing corrosion in reinforced concrete. However, this system has several weaknesses, including the results of this system that can only be known after this system is applied. So to overcome this, researchers and scientists are interested in using and developing BEM as a solution in corrosion engineering. Therefore, BEM optimization is very important to improve the performance of BEM in completing corrosion engineering. This study aims to optimize the BEM by observing the effect of the anode mesh size on the potential distribution in reinforcing steel in the simulation of a reinforced concrete sacrificial anode cathodic protection system using BEM 3D. The simulation results show that the active victim anode protects each variation, the anode has a potential value that is not much different for each variation, with a potential value ranging from -1124.92 mV to -1124.90 mV. Then the reinforcing steel in each variation is also in a well-protected condition from the threat of corrosion. Reinforcing steel has a potential value ranging from -920.07 mV to -918.19 mV. Based on the simulation results, it is found that the more number of elements used in the simulation results in the smaller the potential difference in reinforcing steel and concrete. However, it can still be tolerated based on protection criteria. However, the number of elements greatly affects the computation time performed.