Chloride Proofing Performance and Rebar Corrosion Protection Performance of SHCC Having Bending Cracks

Abstract:

The chloride penetration depth and the corroded area on rebar were investigated for SHCC test specimens prepared with Portland cement on its own, and with 25% replacement with limestone powder. After being given bending cracks, the specimens were subjected to wetting and drying cycles of chloride solution by a ponding test. It was found that maximum chloride penetration depth was affected by the cover depth and the deformation applied to the test specimen. The corroded area on the rebar was correlated to the number of cracks in the SHCC and the total of the crack widths. For the same number of cracks and total width of the cracks, the corrosion area was greater in the mix with limestone powder.

• Periodical: Key Engineering Materials (Volume 711)
• Pages: 375-381
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.711.375
• Online since: September 2016
• Authors: Koichi Kobayashi*, Yuto Hara, Yuta Kojima, Keitetsu Rokugo
• Keywords: Chloride Attack, Crack, Polyethylene Fiber, Rebar Corrosion, SHCC

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