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A study on the factors affecting electro-migration characteristic of chloride ion in concrete |
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| รหัสดีโอไอ | |
| Title | A study on the factors affecting electro-migration characteristic of chloride ion in concrete |
| Creator | Isao Ujike, Keiyu Kawaai |
| Contributor | - |
| Publisher | ISEC PRESS |
| Publication Year | 2559 |
| Keyword | Reinforced concrete, Chloride attack, Effective diffusion coefficient, Pore structure, Type of aggregate, Non-ferrous slag, Curing condition, Age of concrete |
| Abstract | As one of the methods to evaluate the durability performance of reinforced concrete structure for the deterioration due to chloride attack, there is a migration test method. The effective diffusion coefficient by migration test method fluctuates with changes in the pore structure of concrete. In this study, focused on the changes of the pore structure with elapse of age of concrete, the objective of this study is to assess the influence exerted on electro-migration characteristic caused by the type of aggregate and with the condition of early age curing.It is confirmed that the resistibility to the movement by the migration test method of the chloride ion was increased by using non-ferrous slag fine aggregate. In the test specimen using sandstone of 40-65% of water-cement ratio, it is presumed that the increase in the effective diffusion coefficient of chloride ion is caused by the fact that the volume of continuous pore or pore size by the curing method and age of concrete become bigger. |
| ISBN | 978-0-9960437-3-1 |
