盐渍土地区混凝土硫酸盐腐蚀加速试验制度评价

Assessment of the accelerated testing system of sulfate erosion for concrete of saline soil area

采用同一强度等级、同一尺寸的混凝土试件进行不同干湿循环制度的加速硫酸盐腐蚀试验,寻求适合于试验室进行的快速硫酸盐腐蚀干湿循环制度。结果表明:混凝土在循环制度二下试件分别在3种不同的浸泡液A、B、C中浸泡4 h,然后在烘箱中100～105℃烘干4 h,每8h作为一个循环,1d可进行三个循环。ω1能反映混凝土性能劣化或失效的过程,ω2也能反映混凝土性能劣化的状态,ω1和ω2对混凝土性能劣化状态的评定结果一致性较好,在试验室进行混凝土耐硫酸盐检测时,建议采用制度二的干湿循环能够有效缩短试验时间。

Using the same intensity level,the same size of the concrete samples for different dry wet cycle of corrosion test system accelerated sulfate,to get the most reasonable concrete dry wet cycle,which apply to the anti-sulfate erosion damage fast test.The test results show that：concrete in system two,can reflect the concrete performance degradation or failure process,also can reflect the state of concrete performance degradation,andof concrete performance degradation of state evaluation results have good consistency.When testing concrete sulfate resistance in the lab,it could shorten the time of the test with the system of the second dry wet followed.