Reinforcement steel corrosion reduction by using fly ash from South Baghdad power plant
Joint Authors
Mirzah, Amal S.
Khalifah, Huda N.
Abbud, Taha H.
Abd al-Karim, Ishraq
Source
Iraqi Journal of Chemical and Petroleum Engineering
Issue
Vol. 14, Issue 1 (31 Mar. 2013), pp.15-24, 10 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2013-03-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Topics
Abstract EN
Corrosion-induced damage in reinforced concrete structure such as bridges, parking garages, and buildings, and the related cost for maintaining them in a serviceable condition, is a source of major concern for the owners of these structures.
Fly ash produced from south Baghdad power plant with different concentrations (20, 25 and 30) % by weight from the cement ratio were used as a corrosion inhibitor as a weight ratio from the cement content.
The concrete batch ratio under study was (1 : 1.5 : 3) cement, sand and gravel respectively which is used in Iraq.
All the raw materials used were locally manufactured.
Concrete slabs (250 x 250 x 70) mm dimensions were casted, using Poly-wood molds.
Two steel bars were embedded in the central position of each slab at the mid-height (about 35 mm), with a space of 100 mm between each other.
A 16 concrete slabs were prepared (0, 20, 25 and 30) wt.
% of fly ash.
The specimens were partially immersed in 3.5 wt.
% NaCl solution in order to predict the corrosion.
Half-cell potential test technique was used to estimate the corrosion rate which is occurred in the steel bar due to the migration of chloride ions through the concrete, depending on the ASTM C876-08.
The result shows that the potential values of steel in concrete were shifts to the positive direction with increasing the percentage of fly ash, because the reduction of porosity by the addition of fly ash which fill the pores and inhibit the chloride ions to reach to steel.
The results also show that the further increase of fly ash (30%) the possibility of carbonation is increased which result in reduction its alkalinity, thereby permitting corrosion of embedded steel.
American Psychological Association (APA)
Mirzah, Amal S.& Khalifah, Huda N.& Abbud, Taha H.& Abd al-Karim, Ishraq. 2013. Reinforcement steel corrosion reduction by using fly ash from South Baghdad power plant. Iraqi Journal of Chemical and Petroleum Engineering،Vol. 14, no. 1, pp.15-24.
https://search.emarefa.net/detail/BIM-322894
Modern Language Association (MLA)
Mirzah, Amal S.…[et al.]. Reinforcement steel corrosion reduction by using fly ash from South Baghdad power plant. Iraqi Journal of Chemical and Petroleum Engineering Vol. 14, no. 1 (Mar. 2013), pp.15-24.
https://search.emarefa.net/detail/BIM-322894
American Medical Association (AMA)
Mirzah, Amal S.& Khalifah, Huda N.& Abbud, Taha H.& Abd al-Karim, Ishraq. Reinforcement steel corrosion reduction by using fly ash from South Baghdad power plant. Iraqi Journal of Chemical and Petroleum Engineering. 2013. Vol. 14, no. 1, pp.15-24.
https://search.emarefa.net/detail/BIM-322894
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 24
Record ID
BIM-322894