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2178-2184 .
［ 29］ 洪雷，程伟，王淑梅，等 . 双向压荷载对高性能混凝土氯离子渗透性的影响［J］. 建筑材料学报，2012，15
（6）：852-856 .
［ 30］ 王海龙，张晓龙，俞秋佳，等 . 压荷载持续作用状态对混凝土中氯离子输运规律的影响［J］. 水利学报，
2015，46（8）：974-980 .
［ 31］ NĚMEČEK J，KRUIS J，KOUDELKA T，et al . Simulation of chloride migration in reinforced concrete［J］. Ap⁃
plied Mathematics and Computation，2018，319：575-585 .
［ 32］ XIA J，LI L . Numerical simulation of ionic transport in cement paste under the action of externally applied elec⁃
tric field［J］. Construction and Building Materials，2013，39（1）：51-59 .

Influence of stray current and compressive loading
on chloride transport in hydraulic structure

NI Yuancheng，ZHU Eryu
（School of Civil Engineering，Beijing Jiaotong University，Beijing 100044，China）

Abstract：In order to study the chloride transport properties of hydraulic concrete structures under the com⁃
bined action of stray currents and loading， so as to provide references for the durability prediction of hy⁃
draulic structures， the electrochemical corrosion tests of concrete specimens with embedded steel bars were
designed respectively under the action of stray current alone and combined with compressive loading in this
paper. The chloride transport properties and concrete pore structure under different current and loading con⁃
ditions were tested，and the effects of stray current and compressive loading on chloride transport were stud⁃
ied. The results show that the steel in the concrete will promote the acceleration effect of stray current on
the transport of chloride ions. The critical stress level at which the transport rate begins to increase is ap⁃
proximately 0.4. In addition，on the basis of the existing research and test results，the prediction model of
chloride transport in concrete under stray current and sustained compressive loading is established and veri⁃
fied by the experimental measurements. It provides reference for durability research and life prediction of hy⁃
draulic structure.
Keywords：hydraulic structure；stray current；compressive loading；chloride transport；concrete

（责任编辑：王冰伟）

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