Abstract
A case of overlaying on ASR-deteriorated reinforced concrete bridge deck is introduced for structural use in repair of Ultra High Performance-Strain Hardening Cementitious Composites (UHP-SHCC). The material is a type of ultra high strength fiber reinforced mortar. Results of investigation are presented as well, focusing on the restraint stress of substrate concrete as one of the subjects to consider when selecting a repair material. Specifically, the author highlights the “cracking potential” calculated as a ratio of restraint stress, which is measured by pseudo perfect restraint testing, to the cracking strength at the same age. By this method, the cracking potential of the material under study turns out to be 70% at 5 days.
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Acknowledgement
The author expresses his sincere gratitude to Takayama Civil Engineering Office, Gifu Prefecture, for its outstanding cooperation.
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Kunieda, M., Banno, K. (2023). Overlay of RC Bridge Deck Deteriorated by ASR Using an Ultra High Performance-Strain Hardening Cementitious Composite (UHP-SHCC). In: Kunieda, M., Kanakubo, T., Kanda, T., Kobayashi, K. (eds) Strain Hardening Cementitious Composites. SHCC 2022. RILEM Bookseries, vol 39. Springer, Cham. https://doi.org/10.1007/978-3-031-15805-6_31
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DOI: https://doi.org/10.1007/978-3-031-15805-6_31
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