Influence of grouting condition on crack and load-carrying capacity of post-tensioned concrete beam due to chloride-induced corrosion

摘要: Abstract Chloride-induced corrosions of a sheath and prestressing tendon in post-tensioned concrete (PC) beams are investigated under different grouting conditions. Two series PC were tested by the electrically accelerated corrosion. The first corrosion tests performed to determine influence grouted ratios straight on tendon. In second tests, length grout filling was curved process. After mechanical behavior deteriorated flexural loading. results experiments show that significantly decreases load-carrying capacity beams. As increase, cracks due propagate earlier along width increases. From view point capacity, it is verified proper can protect from despite wider sheath. presence water inside leads increased both tendon, resulting decrease beam.