| Title |
A Measurement of the Pore Structure and a Life Prediction which Applied the Chloride Ion Diffusion Coefficient of High-heated Concrete |
| Authors |
Oh Sang-Gyun ; Ko Eun-Hye |
| Keywords |
Nitrogen Adsorption Method ; High-heated Concrete ; Pore Structure ; Chloride Ion Diffusion Coefficient ; Life Prediction |
| Abstract |
The purposes of this study are measuring the Find Pore Structure in heated temperature Using Nitrogen Adsorption method and evaluating the Chloride ion migration coefficient of High-heated Concrete by NT BUILD 492 method. To evaluate performance of surface 5cm incoming Chloride Ion, 2D-numerical analysis model(FEM) was developed. As results of this study was obtained as follows;(1) Generally Pore Distribution Variation showed a tendency to increased affected by the influence of high water-cement ratios(W/C). On the whole porosity showed a tendency to decreased according as High-heated temperature irrespective of water-cement ratios(W/C). (2) The compressive strength and the modulus of elasticity were degraded depending on a rise of heated temperature.(3) The Chloride ion migration coefficient of High-heated Concrete were increased by heated temperature. In conclusion, the Chloride ion migration coefficient were affected by distribution of porosity and pore size. |