Corrosion prevention and remediation strategies for reinforced concrete coastal bridges

Cramer, Stephen D.; Covino, Bernard S.; Bullard, Sophie J.; Holcomb, Gordon R.; Russell, James H.; Nelson, Frederick J.; Laylor, H.M.; Soltesz, Steven M.

doi:10.1016/s0958-9465(01)00031-2

Cited by 105 publications

(58 citation statements)

References 8 publications

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“…Figures 5.46 and 5.47 show the differences in chloride levels and washing effects that can occur on the same structure. This is consistent with results from other bridges on the Oregon coast (Cramer, et al 2002b). Presumably, washing effects would also be found in humectant-treated zones where a multitude of microclimates exist.…”

Section: Chloride Depth Profilingsupporting

confidence: 90%

“…The results are in Table 5.4. These values are generally lower than those found on either the Rocky Point Viaduct or the Brush Creek Bridge (Cramer, et al 2002b). The differences arise because the concrete at the bridges have different properties (different D values) and the deposition of salt on the concrete surface is different in each microclimate (different C o values).…”

Section: Chloride Depth Profilingmentioning

confidence: 55%

“…Experience has shown that metallized Zn delivers a relatively large protective galvanic current when first connected to the steel, but the current decreases significantly with time (Cramer, et al 2002b). The amount of current that flows is dependent on several factors, including the following: the resistivity of the concrete (largely a function of concrete quality and composition, Cl¯ contamination, moisture content, and temperature), depth of cover over the reinforcement, charge history of the anode, and frequency of wetting.…”

Section: Humectant Screening (Ohio)mentioning

confidence: 99%

“…This has the advantage of establishing the long-term protection current, which can be compared with the minimum current needed to protect the structure. It also ignores short periods of high galvanic current sometimes observed, especially in the initial days and months of GCP (Cramer, et al 2002b). …”

Section: Galvanic Cathodic Protectionmentioning

confidence: 99%

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Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete

Holcomb¹,

Covino²,

Cramer³

et al. 2002

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Sponsoring Agency Code Supplementary Notes AbstractCathodic protection (CP) systems using thermal-sprayed zinc anodes are employed to mitigate the corrosion process in reinforced concrete structures. However, the performance of the anodes is improved by moisture at the anode-concrete interface. Research was conducted to investigate the effect of hydrophilic chemical additives, humectants, on the electrical performance and service life of zinc anodes. Lithium bromide and lithium nitrate were identified as feasible humectants with lithium bromide performing better under galvanic CP and lithium nitrate performing better under impressed current CP. Both humectants improved the electrical operating characteristics of the anode and increased the service life by up to three years.17.

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Section: Chloride Depth Profilingsupporting

confidence: 90%

Section: Chloride Depth Profilingmentioning

confidence: 55%

Section: Humectant Screening (Ohio)mentioning

confidence: 99%

Section: Galvanic Cathodic Protectionmentioning

confidence: 99%

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Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete

Holcomb¹,

Covino²,

Cramer³

et al. 2002

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“…El precio de las barras de acero inoxidable corrugado es entre 5 y 8 veces superior al de las de acero al carbono (18), siendo ésta la principal razón que limita el uso del acero inoxidable en EHA. Sin embargo, el uso de armaduras de acero inoxidable representa tan sólo un incremento del 10% del coste total del proyecto de construcción, y se ha estimado que su amortización puede reducir el coste inicial en un 50% si consideramos el incremento de tiempo de vida útil en servicio, el cual puede ser superior a 120 años para puentes en zonas costeras (19).…”

Section: Introductionunclassified

Ductilidad del acero inoxidable bajo en níquel para estructuras de hormigón armado

Escamilla¹,

Bastidas²,

González³

et al. 2011

Mater. construcc.

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Palabras clave: acero bajo en níquel, ductilidad, armaduras, acero equivalente, estructuras de hormigón armado. SUMMARYThis paper discusses the stress-strain curves for a new low nickel stainless steel, a conventional AISI 304 stainless steel and a carbon steel commonly used in reinforced concrete structures. Ductility was studied in terms of ultimate tensile strength (f max ), elastic limit (f y ) and total elongation at maximum force [ultimate strain; uniform elongation] (ε max ). The three materials were assessed with internationally accepted criteria, such as plastic rotational capacity, necking region and the toughness index (total energy absorbed at uniform elongation). The findings were compared to the properties of three types of conventional reinforcing steel: 500SD, 500N and 500H (EC-2).

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Corrosion Characteristics of Rebar Induced in Different Types of Fibre Reinforced Concrete

Gopu

Sofi

2020

RILEM Bookseries

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Corrosion prevention and remediation strategies for reinforced concrete coastal bridges

Cited by 105 publications

References 8 publications

Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete

Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete

Ductilidad del acero inoxidable bajo en níquel para estructuras de hormigón armado

Corrosion Characteristics of Rebar Induced in Different Types of Fibre Reinforced Concrete

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