Experimental Study on Anchoring Bond Behavior of Pre-Tensioned Prestressed Concrete Beams with Corroded Steel Strands
To study the influence of steel strands corrosion on the bond behavior for anchoring of pre-tensioned prestressed concrete beams, nine specimens were fabricated. Of which, 5 beams were mixed with salt and set in different places to be corroded in different intensity for 13 months. Then the load test was held to all the 9 specimens and the load-slip curves were obtained. The results show that under the condition of no corrosion crack, the short-term anchoring bond strength of pre-tensioned prestressed concrete beams increases for the steel strands corrosion. Because the tension behavior of steel strands deteriorates remarkably even if the corrosion is slight, which is the dominant cause for the degradation of fundamental structural behavior, the influence of steel strands corrosion on the bond behavior for anchoring may be ignored.
Chaohe Chen, Yong Huang and Guangfan Li
F. M. Li et al., "Experimental Study on Anchoring Bond Behavior of Pre-Tensioned Prestressed Concrete Beams with Corroded Steel Strands", Advanced Materials Research, Vols. 243-249, pp. 304-307, 2011