𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Organic substances as inhibitors for chloride-induced corrosion in reinforced concrete

✍ Scribed by M. Ormellese; F. Bolzoni; L. Lazzari; A. Brenna; M. Pedeferri

Publisher
John Wiley and Sons
Year
2010
Tongue
German
Weight
387 KB
Volume
62
Category
Article
ISSN
0947-5117

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Corrosion inhibitors are used to prevent chloride‐induced corrosion in reinforced concrete structures. Since performance of commercial organic inhibitors is only partially satisfactory, a 7‐year long research has been carried out in order to set‐up a new organic inhibitive mixture, able to prevent chlorides‐induced corrosion. A first screening, by means of potentiodynamic polarisation test in alkaline synthetic pore solution, was performed on 80 organic compounds, mainly primary and tertiary amines, aminoalcohols, carboxylates compounds and aminoacids, in order to select the best inhibiting substances. The nine best inhibitive organic substances were selected for long‐term tests: 2 amines (dimethylethanolamine and triethylentetramine), 4 aminoacids (aspartate, asparagine, glutamate and glutamine) and 3 carboxylates compounds (tartrate, benzoate and EDTA). Potentiostatic polarisation and free corrosion tests in synthetic pore solution were performed, as well as tests in concrete exposed to accelerated chlorides penetration. Five years of tests allow estimating the efficiency of the substances in preventing chlorides‐induced corrosion, in term of influence on chlorides penetration and on critical chlorides threshold.

📜 SIMILAR VOLUMES

Effect of corrosion inhibitors on the in
Effect of corrosion inhibitors on the initiation of chloride-induced corrosion on reinforced concrete structures
✍ M. Ormellese; F. Bolzoni; L. Lazzari; P. Pedeferri 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 German ⚖ 431 KB 👁 1 views

## Abstract Corrosion of carbon steel rebars is the main cause of failure of reinforced concrete structures. To prevent and delay the occurrence of corrosion, a high quality concrete with a proper cover and a good mixture proportion should be designed. Additional prevention methods are used if seve

Utilizing Arghel extract as corrosion in
Utilizing Arghel extract as corrosion inhibitor for reinforced steel in concrete
✍ A. M. Abdel-Gaber; E. Khamis; A. Hefnawy 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 German ⚖ 224 KB

## Abstract Inhibition of the corrosion of reinforced steel in concrete in 0.5 M NaCl by Arghel extract has been studied employing different electrochemical techniques in conjunction with optical images photo. Potential‐time measurements showed that introducing of Arghel extract into concrete shift

Electrochemical inhibitor injection for
Electrochemical inhibitor injection for control of reinforcement corrosion in carbonated concrete
✍ J. Kubo; S. Sawada; C. L. Page; M. M. Page 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 German ⚖ 192 KB

## Abstract This paper describes preliminary investigations into the effectiveness of an electrochemical method of injecting organic base corrosion inhibitors into carbonated concrete containing embedded steel bars on which corrosion had been pre‐initiated. The corrosion inhibitors studied were pur

Naturally Occuring Organic Substances as
Naturally Occuring Organic Substances as Corrosion Inhibitors for mild steel in acid medium
✍ Dr. M. A. Abdel Rahim; Hanaa B. Hassan; M. W. Khalil 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 440 KB

## Abstract Inhibition of the corrosion of mild steel in H~2~SO~4~ by amino acids was studied by measuring the Tafel polarization curves. Nineteen different naturally occuring amino acids were used as corrosion inhibitors. Two‐site adsorption model was proposed to explain the adsorption of some ami

Chloride threshold for corrosion of galv
Chloride threshold for corrosion of galvanized reinforcement in concrete exposed in the mexican Caribbean
✍ L. Maldonado 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 German ⚖ 137 KB 👁 1 views

## Abstract The time of incubation (TI) and chloride threshold (CT) necessary to initiate corrosion of reinforcement steel are crucial variables to predict the useful life of an infrastructure in any model. For black steel there is a great amount of data in the bibliography. However, for galvanized