Sri Murti Adiyastuti
Blative concrete is the most economical structure material, has a strong properties, and high durability. In the marine environment, reinforcement steel can experience a corrosion process caused by carbon dioxide (CO2) or / and chloride (CL-). The mechanism of chloride attacks begins with the patch of holes in the locations that reinforcement has been deviated or the passive layer has been destroyed. Therefore this corrosion is also called a corrosion of pitting or corrosion of the well. This study aims to estimate the age and durability of the concrete structure in the sea so that predictions are needed from the process of penetrating chloride ions into the concrete. Prediction of service life is a prediction of the penetration rate of chloride ion into the concrete until the concentration on the reinforcement surface reaches the threshold value. To get a chloride penetration rate into the concrete. Concrete will first be placed with splitting test. One way that can be used to determine the concentration of chloride is to use the Migration Test method in the condition of the steady state. To get the condition of steady state, renewal of a solution regularly. Nernst-Planck's relationship will take into account the rate of chloride diffusion rate by using the value of the chloride concentration, flux ion chloride, potential difference, temperature and sample thickness.
Publish papers at international seminars
Transportation involved in modeling the penetration of chloride into the concrete. Until now, the most frequently used tranport mechanism for the estimated chloride penetration into concrete reinforcement is a diffusion mechanism. Prediction service life is a complex problem because many mechanisms