Investigation and Repair of Reinforcement Corrosion in a Bridge Deck.

Cavalier, P G; Vassie, PR; Trrl,

doi:10.1680/iicep.1981.1784

Cited by 21 publications

(7 citation statements)

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“…The papers by Cavalier and Vassie [30,31] mention the cases shown in Table 1 although again details of initiation time and longer-term behaviour are scanty. Importantly, all these structures showed corrosion within 18 years after construction, even though they were constructed in the mid-to-late 1950's.…”

Section: Observationsmentioning

confidence: 99%

Reinforcement corrosion initiation and activation times in concrete structures exposed to severe marine environments

Melchers

2009

Cement and Concrete Research

100

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The corrosion of steel reinforcement bars in reinforced concrete structures exposed to severe marine environments usually is attributed to the aggressive nature of chloride ions. In some cases in practice corrosion has been observed to commence already within a few years of exposure even with considerable concrete cover to the reinforcement and apparently high quality concretes. However, there are a number of other cases in practice for which corrosion initiation took much longer, even in cases with quite modest concrete cover and modest concrete quality. Many of these structures show satisfactory long-term structural performance, despite having high levels of localized chloride concentrations at the reinforcement. This disparity was noted already more than 50 years ago, but appears still not fully explained. This paper presents a systematic overview of cases reported in the engineering and corrosion literature and considers possible reasons for these differences. Consistent with observations by others, the data show that concretes made from blast furnace cements have better corrosion durability properties. The data also strongly suggest that concretes made with limestone or non-reactive dolomite aggregates or sufficiently high levels of other forms of calcium carbonates have favourable reinforcement corrosion properties. Both corrosion initiation and the onset of significant damage are delayed. Some possible reasons for this are explored briefly.

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Section: Observationsmentioning

confidence: 99%

Reinforcement corrosion initiation and activation times in concrete structures exposed to severe marine environments

Melchers

2009

Cement and Concrete Research

100

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“…The clearest (but brief) exposition is by Cavalier and Vassie (1981) who noted "the (black) corrosion product is not the common rust produced in general corrosion" and that it had "a volume per unit mass… substantially lower" than typical for rusts. The clearest (but brief) exposition is by Cavalier and Vassie (1981) who noted "the (black) corrosion product is not the common rust produced in general corrosion" and that it had "a volume per unit mass… substantially lower" than typical for rusts.…”

Section: Discussionmentioning

confidence: 99%

Aspects of long-term durability of reinforced concrete structures in marine environments

Melchers¹,

Pape²

2011

European Journal of Environmental and Civil Engineering

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Much concern exists about the apparently short durability of reinforced concrete structures in marine environments. However, there are many examples of structures that have survived for long periods of time with little evidence of reinforcement corrosion. Some of these were made with seawater as mixing water. Others had very little concrete cover. Detailed examination has revealed that reinforced concrete structures made with fine or coarse aggregate consisting of calcium carbonates such as limestone or seashells or with non-reactive dolomite have extended times to commencement of corrosion initiation and to active corrosion. The reasons for this are explored herein. In addition it is shown that some structures can have serious localized reinforcement corrosion without obvious exterior signs such as concrete cracking and delamination. This requires urgent research.

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“…Isolated references to severe localized corrosion with associated black corrosion products but with little external evidence, such as observed at Arbroath and Sorell, were also found in the literature, including for older reinforced concrete bridges in the US and for reinforced concrete bridge decks in the UK. The clearest but brief exposition is by Cavalier and Vassie (1981) who noted 'the (black) corrosion product is not the common rust produced in general corrosion' and that it had 'a volume per unit mass substantially lower' than typical for rusts. It had a pH of about 5 and was thought to be similar to magnetite.…”

Section: Discussionmentioning

confidence: 99%

Aspects of long-term durability of reinforced concrete structures in marine environments

Mechers¹,

Pape²

2011

EJECE

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Much concern exists about the apparently short durability of reinforced concrete structures in marine environments. However, there are structures that have survived for long periods of time with little evidence of reinforcement corrosion. Some of these were made with seawater as mixing water and had very little concrete cover. Detailed examination has revealed that reinforced concrete structures made with fine or coarse aggregate consisting of calcium carbonates such as limestone or seashells or with non-reactive dolomite have delayed times to corrosion initiation and to active corrosion. The reasons for this are explored herein. It is shown also that some structures can have serious localized reinforcement corrosion without obvious exterior signs such as concrete cracking and delamination. This requires urgent research.

show abstract

Investigation and Repair of Reinforcement Corrosion in a Bridge Deck.

Cited by 21 publications

References 0 publications

Reinforcement corrosion initiation and activation times in concrete structures exposed to severe marine environments

Reinforcement corrosion initiation and activation times in concrete structures exposed to severe marine environments

Aspects of long-term durability of reinforced concrete structures in marine environments

Aspects of long-term durability of reinforced concrete structures in marine environments

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