大气曝露混凝土劣化试验分析

On analysis of the concrete deterioration test by air exposure

采用三种不同水泥用量的混凝土试样置放于酸性河道旁侧并在大气曝露之后，对混凝土试样进行检测与分析。通过观察与检测，混凝土被确认有一定程度的劣化现象。试验结果表明，混凝土的劣化深度和脱落深度随时间推移有明显的增加，变化量在0．7mm／年～1．3mm／年之间。

Concrete test sample of three joint material dosage is placed near an acid river, air exposure is carried out, the character of test sample is measured, and a change situation is analyzed. By the observation and measurement,degradation of test sample was boiled to some extent and accepted. Considering the examination result, the deterioration depth and omission depth of concrete have a remarkable increase in connection with the age, and the amounts of change are 0.7 mm/yr, and 1.3 mm/yr, respectivdy.