Model of Reinforcement Incipient Corrosion in Coral Aggregate Concrete

被引：0
|
作者：
Niu D. [1 ,2 ]
Sun Z. [1 ]
Zhang L. [1 ,2 ]
Chen H. [1 ]
机构：
[1] School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an
[2] State Key Laboratory of Green Building in Western China, Xi'an University of Architecture and Technology, Xi'an
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2021年 / 24卷 / 05期
关键词：
Coral aggregate concrete; Critical chloride ion concentration; Electrochemical impedance spectroscopy; Incipient corrosion; Linear polarization resistance;
D O I：
10.3969/j.issn.1007-9629.2021.05.011
中图分类号：
学科分类号：
摘要：
The time‑varying of the corrosion potential and corrosion current of coral aggregate concrete reinforcement at different voltage values was analyzed by linear polarization resistance and electrochemical impedance spectroscopy. The resistivity and porosity of coral aggregate concrete and ordinary concrete were tested. The critical chloride ion concentration of two kinds of concrete was studied. The results show that the stable period of corrosion potential and corrosion current of coral aggregate concrete is shorter than that of ordinary concrete under the same voltage. The critical chloride ion concentration of coral aggregate concrete is lower than that of ordinary concrete. © 2021, Editorial Department of Journal of Building Materials. All right reserved.
引用
收藏
页码：977 / 985
页数：8
相关论文
共 27 条
  • [1] SU Li, NIU Ditao, LUO Yang, Et al., Research on the inner chloride diffusion and capillary water absorption properties of fly ash coral aggregate concrete, Journal of Building Materials, 24, 1, pp. 77-86, (2021)
  • [2] LIU J, OU Z, WEI P, Et al., Literature review of coral concrete[J], Arabian Journal for Science and Engineering, 43, 4, pp. 1529-1541, (2017)
  • [3] DA B, YU H F, MA H Y, Et al., Chloride diffusion study of coral concrete in a marine environment[J], Construction and Building Materials, 123, pp. 47-58, (2016)
  • [4] CHEN C Y, JI T, ZHUANG Y Z, Et al., Workability, mechanical properties and affinity of artificial reef concrete[J], Construction and Building Materials, 98, 15, pp. 227-236, (2015)
  • [5] DALE P B., Influence of internal curing using lightweight aggregates on interfacial transition zone percolation and chloride ingress in mortars, Cement and Concrete Composites, 31, 5, pp. 285-289, (2009)
  • [6] WANG Q, LI P, TIAN Y, Et al., Mechanical properties and microstructure of Portland cement concrete prepared with coral reef sand[J], Journal of Wuhan University of Technology, 31, 5, pp. 996-1001, (2016)
  • [7] WU W J, WANG R, ZHU C Q, Et al., The effect of fly ash and silica fume on mechanical properties and durability of coral aggregate concrete[J], Construction and Building Materials, 185, 10, pp. 69-78, (2018)
  • [8] WU Wenjuan, WANG Nian, ZHU Changqi, Et al., Experimental study on dynamic compression performance of Coral aggregate concrete, Journal of Building Materials, 22, 1, pp. 7-14, (2019)
  • [9] POURSAEE A, HANSSON C M., Potential pitfalls in assessing chloride‑induced corrosion of steel in concrete, Cement and Concrete Research, 39, 5, pp. 391-400, (2009)
  • [10] DARMAWAN H S., Pitting corrosion model for reinforced concrete structures in a chloride environment[J], Magazine of Concrete Research, 62, 2, pp. 91-101, (2010)
123