Influence of Environment Water on Leakage Corrosion of Concrete Dam

摘要

The influence of environment water on leakage corrosion of concrete dam is studied in terms of the variation of pH value of permeate water and the dissolved amount of calcium oxide from concrete specimen. The results indicate that the dissolved amount of calcium oxide from per cubic meter of concrete gradually decreases with the extension penetration time and ultimately stabilizes at a certain value, and the pH value of permeate water reduces with the prolonged penetration time. A calculation formula about the durability of concrete dam under leakage corrosion is fitted based on the dissolved amount of calcium oxide, and the durability of concrete dam under leakage corrosion is quantitatively analysised with the formula at the end of this paper.