According to sampling analysis the surface river water and ground water in borehole have micro-corrosion on concrete structure rebar in reinforced concrete and steel structure.
根据取样分析地表河水、钻孔内地下水对混凝土结构、对钢筋混凝土中钢筋、对钢结构均具微腐蚀性。
2
The macro and micro characteristics of vacuolar corrosion were studied; a failure case of vacuolar corrosion of petroleum pipe of seashore well-drilling rig was discussed.
通过讨论海上石油钻井平台用管材空泡腐蚀失效的案例，研究管材空泡腐蚀的宏观特征和微观特征。
3
The mechanism of FC admixture increasing the high performance concrete resistance to sulfate corrosion is analyzed as viewed from micro structure.