The Influence of Admixtures on the Corrosion Protection Afforded Steel Reinforcement in Seawater-and-Seasand Concrete

Abstract:

It is inevitable for steel reinforcement to be corroded when mixed with seawater-and-seasand concrete. In order to improve steel corrosion protection properties of seawater-and-seasand concrete, reduce the chloride ion’s attack on steel reinforcement in structural concrete and lengthen the steel reinforcement’s service time, this paper presents an experimental study on whether admixtures like fly ash, slag and metakaolin in the seawater-and-seasand could retard the corrosion to steel reinforcement and provide protection to steel reinforcement in seawater-and-seasand concrete. The results indicated that metakaolin had a significant anti-corrosion effect and greatly enhanced the steel corrosion protection properties of seawater-and-seasand concrete whereas both fly ash and slag did not appear to have any obvious influence on curbing the corrosion of steel reinforcement.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 81-89
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.81
• Online since: May 2011
• Authors: Jun Long Zhou, Zhong Wen Ou, Qiao Chen, Yun Chen
• Keywords: Admixture, Corrosion Protection Afforded Steel Reinforcement, Fly Ash (FA), Metakaolin (MK), Seawater-and-Seasand Concrete, Slag

References

[1] Dinghai Hong. The problem and counter plan of the foreland reinforced concrete used the sea sand [J]. CONCRETE,2003,2:17-19.In Chinese

[2] Neville A.Chloride Attack of Reinforced Concrete: an Overview[J].Materials and Structures, 1995,28:63-70.

DOI: 10.1007/bf02473172

[3] Yumin Zhang, Bosheng Huang, Ru Gao. The research of concrete durability in the environment with salt solution. Sichuan Building Science[J],2004,12:90-92. In Chinese

[4] Zhaolin Chen, Xiaoning Tang, Guofeng Sun. Research on durability and application of seawater concrete. THE OCEAN ENGINEERING[J]. 2008,11:102-106. In Chinese

[5] Deqiang Pan. Design for Corrosion Prevention Durability of Concrete Structures in Marine Environment. Port & Waterway Engineering. 2001,8:13-14. In Chinese

[6] Datong Zhang. SEM and EDS analysis [M].guangzhou: South China University of Technology publishing house,2008:68-74. In Chinese

[7] V. Saraswathy, S. Muralidharan, K. Thangavel, S. Srinivasan. Influence of activated fiy ash on corrosion-resistance and strength or concrete. Cement and Concrete Composites [J], 2003, 25(7): 673-680.

DOI: 10.1016/s0958-9465(02)00068-9

[8] Surgavanshi A.K. Swamy R.N. Stability of Friedel's Salt in Carbonated Concrete Structural Elements [J]. Cement and Concrete Research,1996,26(5):729-741.

DOI: 10.1016/s0008-8846(96)85010-1

[9] Nabil M,Al-Akhras. Durability of metakaolin concrete to sulfate attack[J]. Cement and Concrete Research, 2006,36(9):1727.

DOI: 10.1016/j.cemconres.2006.03.026

[10] Wei Shen, wenxi Huang, Panrong Min. Technology of Cement[M], Wuhan University of Technology publishing house.1991, 7: 195. In Chinese