Corrosion of basaltic pumice, colemanite, barite and blast furnace slag coated rebars in concretes

Binici, Hanifi; Aksoğan, Orhan; Durgun, Muhammed Yasin

doi:10.1016/j.conbuildmat.2012.07.030

Cited by 27 publications

(16 citation statements)

References 8 publications

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“…e purpose of the galvanic cell method is to sort the corrosion values of the steel bars from big to small by forming a simple galvanic cell [43]. In this method, two pieces of metals are immersed in an electrolyte and get in contact with each other where an electron exchange takes place by the created electric current.…”

Section: Galvanic Cell Methodmentioning

confidence: 99%

Effects of Coatings Containing Organic Ashes on the Corrosion Performance of Reinforcements

Karapinar

2019

Advances in Civil Engineering

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The aim of this study is to investigate the corrosion performance of reinforcement steels coated with a coating containing wheat straw, sunflower stalk, and corn stalk ashes and moreover to discuss the effect of the coating on the concrete durability. By replacing calcite with different amounts of these organic ashes in the dye production, innovative corrosion inhibitive coating types were introduced. These coating types have been applied both on the reinforcement steels and concrete surface. In order to understand the effects of the coating types produced with these organic ashes, the steel bars coated with them containing 6% of the organic ashes as fine aggregate were embedded into concrete samples. The samples were cured both in tap water and 3.5% NaCl solution for 180 days, and the mass losses of the steel bars were determined. Also, the inhibition efficiency of the coating was determined by using the galvanic cell method and accelerated corrosion tests. Furthermore, mass loss, compressive strength, abrasion resistance, freeze-thaw property, and capillary water permeability of the reinforced concrete samples with the produced coating were investigated. Test results showed that the minimum mass loss ratio in reinforcement was observed as 0.185% in samples coated with all three organic ash-added mixes. Also, for the same samples compressive strength loss was the lowest as 14%. As a result, the durability of concrete and the corrosion resistance of steel bars improve with the addition of wheat straw, sunflower stalk, and corn stalk ashes into the coating and they could be used as environment-friendly corrosion inhibitors.

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Section: Galvanic Cell Methodmentioning

confidence: 99%

Effects of Coatings Containing Organic Ashes on the Corrosion Performance of Reinforcements

Karapinar

2019

Advances in Civil Engineering

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“…It is widely known that, corrosion of reinforcing steel is on top list of concrete durability considerations and the resources allocated to replace or repair premature structures. Interface between steel rebar and concrete usually leads to the weakening of the bond between them, however rust which is well adhered to the underlying steel supports the bond between steel and concrete [1,2]. Steel rebars in concrete are protected against corrosion by an oxide protective layer called the passive layer which is formed by the alkalinity of the concrete pore solution (pH $ 13).…”

Section: Introductionmentioning

confidence: 99%

Novel anticorrosive pigments based on waste material for corrosion protection of reinforced concrete steel

Ahmed

Mohamed

Mabrouk

et al. 2015

Construction and Building Materials

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“…Cement manufacturing is an important industry that has a priority in the development plan of many countries especially Egypt. Global cement consumption increases and will be rising significantly in the future; especially in emerging markets due to the extreme large production quantity (Schneider et al , 2011; Binici et al , 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Concrete is the most widely used building material due to its high resistance and excellent mechanical properties. Many modern concrete mixes are modified with addition of admixtures, which can improve their microstructure and decrease the calcium hydroxide concentration by consuming it through pozzolanic reaction (Bredy et al , 1998; Binici et al , 2012). Concrete durability can be found on the priority list of considerations (Asbridge et al , 2002).…”

Section: Introductionmentioning

confidence: 99%

The influence of binary pozzolanic replacements on the durability and corrosion performance of reinforced concrete

Mossalam

Ahmed

Souaya

et al. 2020

PRT

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Purpose The purpose of this research is to study the physical and mechanical properties beside the durability of concrete as well as corrosion resistance of reinforced concrete by replacing Ordinary Portland cement (OPC) with different ratios of silica fume and meta-kaolin and applying two paint formulations to enhance corrosion resistance and mechanical properties. In this work, modified concrete mixes containing pozzolanic materials of industrial wastes such as silica fume (SF) with ratios ranging between (0, 10 and 15%) and calcined raw material such as meta-kaolin (MK) with ratios (0, 3, 5 and 10%), were introduced using water binder ratio (w/b) 0.45 to study their effect on the physico-mechanical properties and durability of concrete as well as corrosion protection performance of reinforced concrete. Two paint formulations containing the same ingredients except that one of them is free from talc (G1) and the other contains talc (G2) were applied on the rebars embedded in these modified mixes. Talc is known to offer high pH to the surrounding media. Design/methodology/approach Modified concrete mixes containing the coated reinforced concrete steel with the different paint formulations in presence and absence of talc were tested, and the corrosion behavior was studied using electrochemical impedance spectroscopy (EIS) in 3.5% NaCl, and the concrete mixes were also tested through their compressive strength, chloride permeability, scanning electron microscope/energy dispersive X-ray analysis and bond strength. Findings The results revealed that the hardened reinforced concrete mix containing 10% SF with 5% MK with embedded rebars coated with G2 (paint containing talc) was the best concrete system which offers concrete sustainability besides high corrosion protection performance, i.e. presence of talc in the paints combined with the effect of cement blended with SF and MK showed positive effect on the reinforced concrete properties that leads to more durability and workability. Originality/value The integrity of using two efficient methods of corrosion protection beside the effect of the different replacements in concrete mixes containing coated reinforced concrete steel with paint formulations free from talc (G1) and others containing talc (G2), which lead to fatal changes in the pH of the surrounding media (i.e. concrete which has high alkaline pH) to achieve good concrete properties aside with convenient paint formulations together.

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Corrosion of basaltic pumice, colemanite, barite and blast furnace slag coated rebars in concretes

Cited by 27 publications

References 8 publications

Effects of Coatings Containing Organic Ashes on the Corrosion Performance of Reinforcements

Effects of Coatings Containing Organic Ashes on the Corrosion Performance of Reinforcements

Novel anticorrosive pigments based on waste material for corrosion protection of reinforced concrete steel

The influence of binary pozzolanic replacements on the durability and corrosion performance of reinforced concrete

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