Abstract：Research purposes:The application time of micro-pile is not long enough to discover the problem of anti- corrosive durability. There is also no relevant terms yet about the anti-corrosive durability of micro-pile in the current codes. There are two ways of micro-pile corrosion: the reinforcement corrosion and the cement mortar corrosion of piles. For the engineering application, the laboratory corrosion test of dry and wet cycle and the general loading test were conducted. The bond behavior with rocks and the bending fracture failure of micro-pile under different corrosion degree were studied.
Research conclusions : The test results show:(1)The micro-pile with smaller water cement ratio and larger cement sand ratio，was performed better bond behavior and corrosion durability.(2)The stress distribution was optimized in order to reduce the large cracks by separated reinforcement by physical isolated method. This also improved the bearing capacity of micro-pile structure. (3)Based on the research，several suggestions of micro-pile corrosion durability were proposed，such as design working life, pile diameter and protective layer, and were recommended for design reference.
蒋楚生,李庆海,贺钢,周德培. 微型桩抗滑结构腐蚀试验研究[J]. 铁道工程学报, 2014, 31(5): 23-27.
JIANG Chu-she, LI Qing-hai,HE Gang,ZHOU De-pei. Research on the Corrosion Test of Micro-pile Anti-slide Structure. 铁道工程学报, 2014, 31(5): 23-27.
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2014, Vol. 31 
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