防辐射混凝土的耐久性能研究

Study on the Durability of Anti-radiation Concrete

该文系统研究了利用铁矿石和重晶石配制的不同强度等级防辐射混凝土的抗水渗透性能、抗氯离子渗透性能、抗碳化性能、抗冻性能和早期收缩性能。相同水胶比参数条件下不同骨料防辐射混凝土的对比结果表明,抗渗等级、电通量和氯离子渗透系数、抗冻等级和早期收缩结果受骨料影响的规律一致,铁矿石组的最大,重晶石的最小;不同骨料对28 d碳化试验结果影响并不明显。

In this paper,the water permeability,the resistance to chloride ion permeability,carbonation resistance,frost resistance and early shrinkage of anti-radiation concrete with different strength grades made of iron ore and barite are systematically studied.The comparison results of different aggregate anti-radiation concrete under the same water binder ratio parameters show that the influence rules of impermeability grade,electric flux and chloride ion permeability coefficient,frost resistance grade and early shrinkage results are the same.The iron ore group is the largest while the barite is the smallest;different aggregate has no obvious influence on the 28 d carbonation test results.