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- W567471618 abstract "Parking structures are especially liable to concrete deterioration, due to the combined effects of temperature variations, rain, snow, and intrusion of de-icing salts. This article discusses the implications of chloride ion penetration into multi-storey parking structures, and effective methods of survey and diagnosis. The most serious threat to the structures' durability is corrosion of steel reinforcement due to salt intrusion. Such corrosion leads to spalling, forming dangerous potholes. Corrosion occurs when the normal passive layer, protecting the steel, is affected by depassivation, most often caused by chloride ions and carbonation. The most effective techniques for identifying the risks have been found to be: (1) visual and delamination surveys; (2) depth of carbonation and cover surveys; (3) half-cell potential and chloride contamination surveys; and (4) linear polarisation and resistivity measurements to estimate likely future corrosion rates. A qualitative risk assessment compares the hazards and risks identified for different structural elements and components. A quantitative assessment estimates the strength of a structural element and predicts when it will no longer be safe and need repair or strengthening. The article lists the principal repair options, and outlines a rational maintenance strategy." @default.
- W567471618 created "2016-06-24" @default.
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- W567471618 date "1998-01-01" @default.
- W567471618 modified "2023-09-27" @default.
- W567471618 title "CORROSION IN PARKING STRUCTURES" @default.
- W567471618 hasPublicationYear "1998" @default.
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