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Delaying time to corrosion initiation in concrete using brick aggregate as internal curing medium under adverse curing conditions
https://orcid.org/0000-0002-0288-938X
Highlights Enhanced performance of internally cured concrete under adverse curing conditions. Fifteen different types of adverse curing conditions were considered. Brick aggregate can be effectively utilized as internal curing medium. Significant positive effect of internal curing on chloride diffusion coefficients. Considerable impact of internal curing in delaying corrosion initiation time.
Abstract Absence of proper curing results in weaker and permeable concrete and eventually, reduces the service life of reinforced concrete (RC) structures significantly, particularly in aggressive conditions like marine environment. One of the main causes for reduced service life under marine ambience is chloride induced corrosion resulting from ingress of chloride ion in concrete. The negative impacts caused by the lack of proper curing can be compensated by adapting the internal curing mechanism that ensures better hydration. Brick chip (BC) has the ability to absorb sufficient quantity of water during mixing and desorbs it afterwards and therefore, can be used to produce internally cured concrete. On the other hand, chloride ingress within concrete primarily depends on chloride diffusion coefficient of the concrete. As a result, internally cured concrete with appropriate proportion of BC is expected to linger the time of corrosion initiation in RC structure by producing robust and denser concrete. In this study, the delay in corrosion initiation time and consequent extension of the service life of internally cured concrete with BC under different unfavorable curing conditions was investigated. It was found that corrosion initiation time of internally cured concrete could be increased by several years as compared to conventional concrete depending on adversity of curing conditions and concrete cover. The study shows immense potential of internal curing using BC to enhance service life of concrete under adverse curing conditions and hinder premature repair work of concrete.
Delaying time to corrosion initiation in concrete using brick aggregate as internal curing medium under adverse curing conditions
https://orcid.org/0000-0002-0288-938X
Highlights Enhanced performance of internally cured concrete under adverse curing conditions. Fifteen different types of adverse curing conditions were considered. Brick aggregate can be effectively utilized as internal curing medium. Significant positive effect of internal curing on chloride diffusion coefficients. Considerable impact of internal curing in delaying corrosion initiation time.
Abstract Absence of proper curing results in weaker and permeable concrete and eventually, reduces the service life of reinforced concrete (RC) structures significantly, particularly in aggressive conditions like marine environment. One of the main causes for reduced service life under marine ambience is chloride induced corrosion resulting from ingress of chloride ion in concrete. The negative impacts caused by the lack of proper curing can be compensated by adapting the internal curing mechanism that ensures better hydration. Brick chip (BC) has the ability to absorb sufficient quantity of water during mixing and desorbs it afterwards and therefore, can be used to produce internally cured concrete. On the other hand, chloride ingress within concrete primarily depends on chloride diffusion coefficient of the concrete. As a result, internally cured concrete with appropriate proportion of BC is expected to linger the time of corrosion initiation in RC structure by producing robust and denser concrete. In this study, the delay in corrosion initiation time and consequent extension of the service life of internally cured concrete with BC under different unfavorable curing conditions was investigated. It was found that corrosion initiation time of internally cured concrete could be increased by several years as compared to conventional concrete depending on adversity of curing conditions and concrete cover. The study shows immense potential of internal curing using BC to enhance service life of concrete under adverse curing conditions and hinder premature repair work of concrete.
Delaying time to corrosion initiation in concrete using brick aggregate as internal curing medium under adverse curing conditions
https://orcid.org/0000-0002-0288-938X
Highlights Enhanced performance of internally cured concrete under adverse curing conditions. Fifteen different types of adverse curing conditions were considered. Brick aggregate can be effectively utilized as internal curing medium. Significant positive effect of internal curing on chloride diffusion coefficients. Considerable impact of internal curing in delaying corrosion initiation time.
Abstract Absence of proper curing results in weaker and permeable concrete and eventually, reduces the service life of reinforced concrete (RC) structures significantly, particularly in aggressive conditions like marine environment. One of the main causes for reduced service life under marine ambience is chloride induced corrosion resulting from ingress of chloride ion in concrete. The negative impacts caused by the lack of proper curing can be compensated by adapting the internal curing mechanism that ensures better hydration. Brick chip (BC) has the ability to absorb sufficient quantity of water during mixing and desorbs it afterwards and therefore, can be used to produce internally cured concrete. On the other hand, chloride ingress within concrete primarily depends on chloride diffusion coefficient of the concrete. As a result, internally cured concrete with appropriate proportion of BC is expected to linger the time of corrosion initiation in RC structure by producing robust and denser concrete. In this study, the delay in corrosion initiation time and consequent extension of the service life of internally cured concrete with BC under different unfavorable curing conditions was investigated. It was found that corrosion initiation time of internally cured concrete could be increased by several years as compared to conventional concrete depending on adversity of curing conditions and concrete cover. The study shows immense potential of internal curing using BC to enhance service life of concrete under adverse curing conditions and hinder premature repair work of concrete.
Delaying time to corrosion initiation in concrete using brick aggregate as internal curing medium under adverse curing conditions
Masum, A.T.M. (Autor:in) / Manzur, Tanvir (Autor:in)
20.08.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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