Effects of corrosion on the behaviour of precast concrete floor systems

摘要

Corrosion is the most deteriorating phenomenon causing structural deterioration of both prestressed and nonprestressed reinforced concrete structures. Precast and pretensioned concrete floor elements, as solid joists and solid and hollow-core planks, are widely used worldwide for structural floor of small to medium size buildings, including car-parking garages. Although usually considered as secondary structural elements, these are particularly vulnerable to corrosion as they are designed and produced using neither longitudinal nor transverse ordinary reinforcements.