Chloride‐induced corrosion of steel in concrete

Glass, Gareth K.; Buenfeld, N.R.

doi:10.1002/pse.54

Cited by 145 publications

(79 citation statements)

References 51 publications

(30 reference statements)

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“…However, during the violent loading, recycles may cause coalescences of critical importance for the steel, due to their proximity, forcing a multiple cracking phenomenon [7]. In addition, voids present a great corrosion risk as well, when they are partially filled with pore solution [23]. The synergy of existing internal and external defects results in corrosion paths creation (Fig.…”

Section: Resultsmentioning

confidence: 99%

The size effect of rebars, on the structural integrity of reinforced concrete structures, which are exposed to corrosive environments

Drakakaki

Apostolopoulos

2018

MATEC Web Conf.

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Abstract. The goal of the present study is to mention the importance of underestimation of the corrosion damage developed in critical load bearing areas, on the column bases, where formation of plastic hinges is attended, mainly during strong seismic events (Figure 1). In such cases, plastic hinges are expected to absorb the seismic energy, owed to seismic vibration. However, chloride induced corrosion is responsible for significant degradation of concrete infrastructures located in coastal areas. Forecasting the life expectancy of such structures, in corrosive environments, is a challenge in engineering, given the fact that existing internal, external, as well as subcutaneous defects, in combination with the aggressive environmental factors, may be responsible for the development of subcutaneous damage on steel reinforcement [1], which may diminish the tolerance of the critical regions of the structures. Moreover, it is widely known that penetration of chloride ions into reinforced concrete varies according to its porosity and its permeability, however, the major factor for corrosion initiation is the threshold of chloride concentration, which strongly depends on the exposed surface area of steel. In the present experimental study, the variation of corrosion damage, on bare specimens, was evaluated and correlated with the geometry of the exposed surface of steel in corrosion [2]. Finally, a correlation between short bare specimens and the "injured" areas of the long embedded specimens is estimated as well.

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Section: Resultsmentioning

confidence: 99%

The size effect of rebars, on the structural integrity of reinforced concrete structures, which are exposed to corrosive environments

Drakakaki

Apostolopoulos

2018

MATEC Web Conf.

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“…Diffusion can be defined as the transfer of mass by random motion of free molecules or ions in a pore solution resulting in a net flow from regions of higher concentration to regions of lower concentration [2,24].…”

Section: Capillary Theorymentioning

confidence: 99%

Long-term performance of surface impregnation of reinforced concrete structures with silane

Christodoulou¹,

Goodier

Austin

et al. 2013

Construction and Building Materials

108

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“…Corrosion rate may be expressed by calculating mass loss of metal (Vargel 2004;Glass and Buenfeld 2000). Mass loss (M L ) due to corrosion initiated by winter road maintenance substances, was evaluated by the following formula (Rosliza et al 2008):…”

Section: Fig 1 Laboratory Experiments a -Immersion Method; B -Spramentioning

confidence: 99%

Experimental Research of Road Maintenance Salts and Molasses ("Safecote") Corrosive Impact on Metals/Kelių Priežiūrai Naudojamų Druskų Ir Melasos („safecote“) Poveikio Metalų Korozijai Eksperimentiniai Tyrimai/ Экспериментальное Исследование Коррозионного Воздействия На Металлы Солей И Мелассы (“Safecote”), Применяемых Для Содержания Дорог

Petkuvienė

Paliulis

2009

Journal of Environmental Engineering and Landscape Management

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Abstract. The purpose of this investigation is to assess the corrosive impact of de-icing salts and product "Safecote" on metals by performing immersion and spraying experiments. Metallic elements such as metallic bridges, road signs, and cars, situated near the road, are exposed to salts used for road maintenance in winter seasons. The salts, used to de-ice the road surface, can cause metal corrosion. NaCl, CaCl 2 , also mixture of NaCl and CaCl 2 are most commonly used salts in Lithuania. Ions of chloride are the main agents which increase corrosion rate and the metal mass loss. This harmful effect could be mitigated by replacing the salts with organic de-icers, for instance, product "Safecote" based on molasses, which is a by-product of sugar production. The research of mass loss of metals and metal alloys was carried out with the help of two methods -immersion and spraying. In the first case tested metals were dipped into the solutions of NaCl, CaCl 2 , NaCl:CaCl 2 and NaCl:Safecote, in the other -metals were sprayed with solutions of above mentioned metals. Results of the experimental research showed that CaCl 2 has the highest effect on metal corrosion. This solution caused mass loss of galvanized steel 301.71±4.2 mg, and carbon steel -52.27±1.7 mg by immersion method. What is more, aluminium 1.37±0.13 mg, galvanized steel 51.79±0.9 mg, stainless steel 2.11±0.2 mg, and carbon steel 266.58±2.5 mg lost their mass by spraying method. The results of the experiment showed that salts, used for road maintenance in winter seasons, should be mixed with "Safecote", which mitigates corrosion of metals and minimizes their mass loss.

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Chloride‐induced corrosion of steel in concrete

Cited by 145 publications

References 51 publications

The size effect of rebars, on the structural integrity of reinforced concrete structures, which are exposed to corrosive environments

The size effect of rebars, on the structural integrity of reinforced concrete structures, which are exposed to corrosive environments

Long-term performance of surface impregnation of reinforced concrete structures with silane

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