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Application of HPFRCC as a patching repair material for RC members exposed to chloride attack



Title: Application of HPFRCC as a patching repair material for RC members exposed to chloride attack
Author(s): K. Kobayashi, Y. Asano and K. Rokugo
Paper category : conference
Book title: 2nd International RILEM Conference on Strain Hardening Cementitious Composites (SHCC2-Rio)
Editor(s): R.D. Toledo Filho, F.A. Silva, E.A.B. Koenders and E.M.R. Fairbairn
ISBN: 978-2-35158-120-9
e-ISBN: 978-2-35158-121-6
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 173 - 180
Total Pages: 8
Nb references: 6
Language: English


Abstract: In this study, to clarify the performance of HPFRCC as a repair material, the effects of cracks on the water permeability of several types of HPFRCC were investigated. A loading test and a corrosion proof test were carried out on RC beam specimens prepared such as to simulate patch repair with HPFRCC. The results of this study are summarized as follows: The permeability of HPFRCC is largely dependent on the number of cracks therein, and is considerably lower than that of NC and PCM even when the accumulative crack width of HPFRCC is larger than that of NC and PCM. A beam deteriorated by rebar corrosion can recover its strength by HPFRCC patching, if the amount of corrosion loss is within 10%. The HPFRCC-repaired part of an RC beam subjected to a bending load to a serviceability limit state showed superior corrosion proof performance.


Online publication: 2012-01-25
Publication type : full_text
Public price (Euros): 0.00