Developing Deeper Understanding of Green Inhibitors for Corrosion of Reinforcing Steel in Concrete

2015 ◽  
pp. 118-146 ◽  
Author(s):  
Mohammad Ismail ◽  
Pandian Bothi Raja ◽  
Abdulrahman Asipita Salawu
Keyword(s):  
Corrosion Inhibitors ◽  
Engineering Students ◽  
Inorganic Compounds ◽  
Environmentally Benign ◽  
Reinforcing Steel ◽  
Protection Measures ◽  
Green Inhibitors ◽  
Concrete Corrosion ◽  
Chloride Attack ◽  
Green Corrosion Inhibitors

Corrosion of reinforcing steel in concrete is a very serious and significant problem in the construction industry. The primary cause of corrosion of reinforcing steel is chloride attack or carbonation. Among several protection measures for concrete corrosion, the usage of corrosion inhibitors is very attractive from the view of cost and ease of application. Though there are numerous organic and inorganic compounds that have been tested and applied industrially as corrosion inhibitors, restrictive environmental regulations have compelled and motivated researchers towards the development of cheap, non-toxic and environmentally benign natural or green corrosion inhibitors. Recent studies on green inhibitors have shown that they are more effective and highly environmentally benign compared to synthetic inhibitors used in the industries. This chapter contributes to developing awareness, understanding and innovative involvement of materials and engineering students in this area that is vital to reduce expenditure related to corrosion problems when they serve in the industries.

scholarly journals Case-Studies on Green Corrosion Inhibitors

2021 ◽  
pp. 204-221
Author(s):  
M. Ramesh
Keyword(s):  
Process Control ◽  
Case Studies ◽  
Corrosion Inhibitors ◽  
Low Cost ◽  
Metals And Alloys ◽  
Industrial Equipment ◽  
Green Inhibitors ◽  
Materials Used ◽  
Green Corrosion Inhibitors ◽  
Cathode Protection

Corrosion in metals and its alloys is an inevitable phenomenon but can be controlled by suitable classical methods like process control, cathode protection, surface treating methods, impurity reduction in metals and addition of metals to form alloys. Nevertheless, the employment of corrosion inhibitors is still a noteworthy and simplest of all the above processes in protecting the metals and alloys especially in acidic media. Protection of metals against corrosion not only prevents corrosion but also is beneficial in terms of money loss as far as industrial equipment, surfaces and vessels are concerned. Since the use of organic and inorganic inhibitors are highly discouraged due to their high cost and toxicity, necessity has adequately aroused the development of corrosion inhibitors which are natural and green. Trends, nowadays, focussed in controlling corrosion in various metals and alloys through green corrosion inhibitors consisting of natural elements alone. In contrast to the inorganic inhibitors, green corrosion inhibitors are characterized by biodegradability, low cost and meagre toxicity. Several researchers are now turning themselves towards the research of green inhibitors which are of no threat to humans and the ecosystem. The current discussion is focussed on the fundamentals of corrosion, corrosion inhibition, materials used for it and case studies of green inhibitors used for corrosion control in various conventional and monolithic metals.

Evaluation of Green Inhibitors

2002 ◽  
Author(s):  
Sankara Papavinasam ◽  
Alex Doiron ◽  
R. Winston Revie
Keyword(s):  
Environmental Effects ◽  
Corrosion Inhibitors ◽  
Test Methods ◽  
Offshore Pipelines ◽  
Internal Corrosion ◽  
Green Inhibitors ◽  
Current Test ◽  
The World ◽  
Green Corrosion Inhibitors ◽  
Selection Of

Producing pipelines are protected from internal corrosion by the application of corrosion inhibitors. Environmental effects of corrosion inhibitors have received increased attention in recent years, especially for offshore pipelines. In response to the drive for more environmentally friendly inhibitors, several “green” corrosion inhibitors have been developed. In the design of new classes of corrosion inhibitors, there is a need to take into account the various environmental regulations that exist. In this paper, the criteria for selecting green inhibitors as used in various part of the world are reviewed. The current test methods, their reproducibility and effectiveness, and their accuracy in relation to the selection of green inhibitors are discussed.

scholarly journals Sustainable Corrosion Inhibitors for Concrete

2021 ◽  
pp. 130-146
Author(s):  
B. Chugh
Keyword(s):  
Green Chemistry ◽  
High Performance ◽  
Corrosion Inhibitors ◽  
High Performance Concrete ◽  
Cost Effective ◽  
Protective Measures ◽  
Concrete Corrosion ◽  
Recent Advances ◽  
Corrosion Mechanisms ◽  
Green Corrosion Inhibitors

Green chemistry and sustainability encourages the significance of preserving the nature and individual’s wellbeing in cost effective way that intends to avoid toxicity and reduction of wastes. Therefore, the implication of green corrosion inhibitors in the field of concrete protection has also received immense attention these days. Indeed, the usage of such inhibitors is a well-known strategy for producing high performance concrete. In view of this, the present chapter discusses the research in the area of sustainable corrosion inhibitors for concrete assurance used commercially in various industries. It also highlights the concrete corrosion mechanisms and its protective measures, recent advances in this field.

scholarly journals Greener Approach towards Corrosion Inhibition

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Neha Patni ◽  
Shruti Agarwal ◽  
Pallav Shah
Keyword(s):  
Heavy Metals ◽  
Amino Acids ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Organic Dyes ◽  
Plant Origin ◽  
Toxic Compounds ◽  
Green Inhibitors ◽  
Protective Films ◽  
Organic Corrosion Inhibitors

Corrosion control of metals is technically, economically, environmentally, and aesthetically important. The best option is to use inhibitors for protecting metals and alloys against corrosion. As organic corrosion inhibitors are toxic in nature, so green inhibitors which are biodegradable, without any heavy metals and other toxic compounds, are promoted. Also plant products are inexpensive, renewable, and readily available. Tannins, organic amino acids, alkaloids, and organic dyes of plant origin have good corrosion-inhibiting abilities. Plant extracts contain many organic compounds, having polar atoms such as O, P, S, and N. These are adsorbed on the metal surface by these polar atoms, and protective films are formed, and various adsorption isotherms are obeyed. Various types of green inhibitors and their effect on different metals are mentioned in the paper.

NATURAL CORROSION INHIBITORS FOR STEEL REINFORCEMENT IN CONCRETE — A REVIEW

2015 ◽  
Vol 22 (03) ◽  
pp. 1550040 ◽  
Author(s):  
PANDIAN BOTHI RAJA ◽  
SEYEDMOJTABA GHOREISHIAMIRI ◽  
MOHAMMAD ISMAIL
Keyword(s):  
Reinforced Concrete ◽  
Corrosion Inhibitors ◽  
Construction Materials ◽  
Steel Corrosion ◽  
Vital Role ◽  
Prevention Measures ◽  
Main Culprit ◽  
Chloride Attack ◽  
Reinforced Steel ◽  
Metal Protection

Reinforced concrete is one of the widely used construction materials for bridges, buildings, platforms and tunnels. Though reinforced concrete is capable of withstanding a large range of severe environments including marine, industrial and alpine conditions, there are still a large number of failures in concrete structures for many reasons. Either carbonation or chloride attack is the main culprit which is due to depassivation of reinforced steel and subsequently leads to rapid steel corrosion. Among many corrosion prevention measures, application of corrosion inhibitors play a vital role in metal protection. Numerous range of corrosion inhibitors were reported for concrete protection that were also used commercially in industries. This review summarizes the application of natural products as corrosion inhibitors for concrete protection and also scrutinizes various factors influencing its applicability.

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