Work

Prediction Model for Changes in Reinforcement Properties Due to Strain Ageing

Year: 2024

Type: article

Abstract: Strain ageing of reinforcement is one factor that can affect the future seismic performance of damaged RC buildings. In this paper, tensile tests were conducted on 84 steel reinforcement specimens and it was found that the factors that control the reduction in ductility and increase in strength of reinforcement due to strain ageing are vanadium content, ageing period, and pre-strain. Equations were proposed to predict the change in reinforcement properties due to strain ageing. Verification of the proposed models against previous studies showed that ductility was reasonably predicted while strength increase could be predicted to within a 10% error margin.

Source: AIJ Journal of Technology and Design

DOI: 10.3130/aijt.30.1263

Authors: Koshin OKAMURA, Alex SHEGAY, Daiki SATO

Institutions: Tokyo Institute of Technology, University of Auckland

Language: English

Topic: Structural Behavior of Reinforced Concrete

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Japan Society for the Promotion of Science

Award: Repair decision methodology for damaged RC structures considering performance reduction due to the effects of strain ageing