摘   要：模拟海洋盐雾区和水下区，采用非破损检测方法测定了混凝土在盐雾腐蚀和海水侵蚀中的相对动弹性模量和质量损失率，研究了混凝土的经时劣化损伤演变规律、特点及损伤程度。同时比较了盐雾环境和海水环境对混凝土损伤劣化的共性和差别。最后借助损伤度概念，探讨了矿渣掺量和混凝土强度对混凝土损伤度的影响。结果表明，相对动弹性模量经时变化过程表现为4个阶段，质量损失变化过程包括2个阶段。盐雾腐蚀造成的混凝土损伤大于海水侵蚀；混凝土的损伤度随着矿渣掺量的增加而增大，同时混凝土强度亦对损伤度起着重要影响。

Abstract: Simulating marine salt spray zone and submerged zone in laboratory, the relative dynamic modulus of elasticity and mass loss rate of concrete subjected to salt spray corrosion and seawater attack are determined by the method of non-damage detection, the damage evolutional law, characters and damage degree of concrete are investigated. Meanwhile, the deterioration of concrete subjected to salt spray and seawater environment is analyzed and compared. At last, based on the concept of damage degree, the influences of slag content and concrete strength on damage degree of concrete are deeply discussed. The results show that the change tendency of the relative dynamic modulus of elasticity exhibits 4 stages, and mass loss change represents 2 stages. The deterioration of salt spray corrosion is more serious than that of seawater attack, the damage degree of concrete enlarges with the increasing of slag content, meanwhile, concrete strength has an important impact on it.