研究了不同NaCl溶液浓度对复合双掺粉煤灰、矿渣混凝土的ASTM C1202测试指标的影响,采用ASTM C1202方法测试了(1%、3%、5%、10%)四种NaCl溶液浓度下粉煤灰和矿渣复合双掺混凝土120d龄期的6h通电量、渗透深度和平均电流。研究结果表明:混凝土的6h通电量、渗透深度和平均电流都随着NaCl溶液浓度的增大而增加,且不同NaCl溶液浓度下渗透深度、平均电流与6h通电量相关性较好,可以考虑用渗透深度和平均电流作为混凝土抗氯离子渗透性评价指标。
The effects of ASTM C 1202 test parameters of concrete which mixes with fly-ash and slag by the different concentration of NaCl solution are studied.The charge passed 6 hours, penetration depth of chloride ions and average current of concrete mixes with fly-ash and slag were tested according to ASTM C1202 at age of 120 d in different four kinds NaCI solution.The result indicates that,the charge passed 6 hours, penetration depth of chloride ions and average current of concrete all increase along with increasing of concentration of NaCl solution.And the correlation between penetration depth of chloride ions, average current and the charge passed 6 hours are good for the different concentration of NaCl solution.Penetration depth of chloride ions and average current can be used as evaluating parameter for chloride ions penetration resistant ability of concrete which mixes with fly ash and slag.