Clarification of mechanism of re-deterioration caused in RC after repair and application to maintenance management system View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2014-2017

FUNDING AMOUNT

13130000 JPY

ABSTRACT

The effect of the repair with silane-type surface penetrant material under an environment of ultraviolet rays was investigated. A low water permeability was kept for 20 years. On the other hand, a low chloride permeability was kept for 10 years but decreased at 20th year. However, it could be recovered by second application.Secondly, it is easy to adsorb chloride ions on a formwork plane compared with a cut plane. However, the difference decreased in a concrete with high strength.Further, when PC beams repaired a section, a step-by-step restoration distributed the pre-stress to several-time. Therefore, the pre-stress did not decrease when a section was cut down. As a result, the load of the stress increment of the existing concrete decreased, and the crack occurrence load of the repair part became large. More... »

URL

https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26289137

Related SciGraph Publications

  • 2018. Study on Triage for Deteriorated Concrete Structures by JSCE-342 in THE AGEING OF MATERIALS AND STRUCTURES
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