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A Study on Utilizing Chemical Inhibitors in New Reinforced Concrete Structures.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	A Study on Utilizing Chemical Inhibitors in New Reinforced Concrete Structures./
Author:	Al-Naghi, Ahmed Abdullah Alawi.
Description:	1 online resource (324 pages)
Notes:	Source: Masters Abstracts International, Volume: 81-08.
Contained By:	Masters Abstracts International81-08.
Subject:	Civil engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9781392593677

A Study on Utilizing Chemical Inhibitors in New Reinforced Concrete Structures.
Al-Naghi, Ahmed Abdullah Alawi.

A Study on Utilizing Chemical Inhibitors in New Reinforced Concrete Structures. - 1 online resource (324 pages)

Source: Masters Abstracts International, Volume: 81-08.

Thesis (M.S.)--King Fahd University of Petroleum and Minerals (Saudi Arabia), 2014.

Includes bibliographical references

Deterioration of reinforced concrete in many industrial and non-industrial structures in the coastal areas of the Kingdom of Saudi Arabia is principally attributed to reinforcement corrosion. Corrosion of reinforcement in this environment is mainly due to the presence of chloride ions. Chloride ions may diffuse from the surrounding environment or may be contributed by concrete constituents, such as aggregates, mixing water, or admixtures.The use of corrosion inhibitors in concrete was evaluated in this study. The effectiveness of seven types of corrosion inhibitors (Calcium Nitrate, Sika Ferrograd 901, Sika Ferrograd 903, Conplast-CN, Cemetec-CCI-S, Rheocrete-CNI, Cortec) in minimizing reinforcement corrosion was assessed. Beam concrete specimens were prepared and exposed to five commonly chloride and/or sulfate occurring zones. Further, cylindrical concrete specimens with and without chloride contamination were prepared and exposed to dry and wet cycles.The effectiveness of inhibitors in minimizing reinforcement corrosion was assessed by measuring the corrosion potentials and corrosion current density. Moreover,accelerated corrosion test was carried out to assess the resistivity of concrete.The results of this investigation indicated that all corrosion inhibitors were effective in minimizing reinforcement corrosion and in extending the service life of structures. However, the effectiveness of the inhibitors varied from one to another in each exposure zone. Calcium Nitrate was found to be the most effective inhibitor in all the exposure zones. Recommendations on the type of inhibitor to be used for each exposure zone are provided as an outcome of this study.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9781392593677Subjects--Topical Terms:

561339
Civil engineering.
Subjects--Index Terms:

Concrete structuresIndex Terms--Genre/Form:

554714
Electronic books.

A Study on Utilizing Chemical Inhibitors in New Reinforced Concrete Structures.
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500 $a Source: Masters Abstracts International, Volume: 81-08.
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502 $a Thesis (M.S.)--King Fahd University of Petroleum and Minerals (Saudi Arabia), 2014.
504 $a Includes bibliographical references
520 $a Deterioration of reinforced concrete in many industrial and non-industrial structures in the coastal areas of the Kingdom of Saudi Arabia is principally attributed to reinforcement corrosion. Corrosion of reinforcement in this environment is mainly due to the presence of chloride ions. Chloride ions may diffuse from the surrounding environment or may be contributed by concrete constituents, such as aggregates, mixing water, or admixtures.The use of corrosion inhibitors in concrete was evaluated in this study. The effectiveness of seven types of corrosion inhibitors (Calcium Nitrate, Sika Ferrograd 901, Sika Ferrograd 903, Conplast-CN, Cemetec-CCI-S, Rheocrete-CNI, Cortec) in minimizing reinforcement corrosion was assessed. Beam concrete specimens were prepared and exposed to five commonly chloride and/or sulfate occurring zones. Further, cylindrical concrete specimens with and without chloride contamination were prepared and exposed to dry and wet cycles.The effectiveness of inhibitors in minimizing reinforcement corrosion was assessed by measuring the corrosion potentials and corrosion current density. Moreover,accelerated corrosion test was carried out to assess the resistivity of concrete.The results of this investigation indicated that all corrosion inhibitors were effective in minimizing reinforcement corrosion and in extending the service life of structures. However, the effectiveness of the inhibitors varied from one to another in each exposure zone. Calcium Nitrate was found to be the most effective inhibitor in all the exposure zones. Recommendations on the type of inhibitor to be used for each exposure zone are provided as an outcome of this study.
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