Rapid Assessment of Chloride Ion Diffusion Behavior in Mortar Using Salt Ponding Test

• Main Author: 王駿紳
• Other Authors: Chung-Chia Yang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/83650167360131115660

碩士 === 國立臺灣海洋大學 === 材料工程研究所 === 100 === In this study, in order to develop and estimate rapid the cementitious materials and chloride diffusion coefficient, a rapid method to analyze the chloride diffusion coefficient was developed by using the total amount of chloride ion and chloride ion content on the surface layer. Comparing the Ponding test and colorimetric test, durability of cementitious material was obtained from the chloride diffusion coefficient. For compressive strength, the volume fraction of fine aggregate increased with increasing of compressive strength, except to 50% of volume fraction of fine aggregate. For Ponding test, chloride diffusion coefficient has great relationship between the water-cement ratio (w/c= 0.35~0.65) and volume fraction of fine aggregate (0%, 10%, 20%, 30%, 40%, and 50%). For colorimetry test, the w/c and the volume fraction of fine aggregate increased with decreasing of accuracy. Therefore, colorimetry test is a method of preliminary analysis to predict the depth of chloride ion penetration.