The inhibition behavior of a water-soluble silane for reinforcing steel in 3.5% NaCl saturated Ca(OH)2 solution. (20th November 2018)

• Record Type: Journal Article
• Authors: Liu, Jiaping; Cai, Jingshun; Shi, Liang; Liu, Jianzhong; Zhou, xiaocheng; Mu, Song; Hong, Jinxiang
• Is Part Of: Construction & building materials. Volume 189(2018)
• Page Start: 95
• Page End: 101
• Publication Date: 2018-11-20
• Subjects: Corrosion inhibitor -- Silane -- Amino alcohol -- Saturated Ca(OH)2 solution -- Reinforcing steel -- Cl−; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2018.08.151
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: A water-soluble silane (APTS) was firstly investigated as corrosion inhibitor for reinforcing steel in alkaline solution. The silane behaves excellent corrosion inhibition efficiency and far beyond the traditional inhibitor of DMEA. The organic silane can be alternative for new generation of organic corrosion inhibitor. Abstract: The inhibition performance of a water-soluble silane on reinforcing steel in saturated Ca(OH)2 solution contaminated by Cl − was investigated and compared with commonly organic inhibitor N, N-dimethylethanolamine (DMEA) using electrochemical techniques and surface analysis measurements. The results indicate that the lower concentration of APTS has better inhibition efficiency than DMEA, the largest inhibition efficiency are 70.1% and 97.4% for DMEA and APTS after 72 h immersion. DMEA promotes the interfacial layer by formation of CaCO3 deposited on steel surface, while APTS changes the character of steel surface by adsorption and effectively inhibits the pitting corrosion.