5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


INFLUENCE OF SURFACE ROUGHNESS ON DUCTILITY OF CORRODED STEEL: AN EXPERIMENTAL STUDY

Naftary GATHIMBA1* and Yasuo KITANE1

1Department of Civil and Environmental Engineering, Nagoya University, Nagoya, Japan

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DOI:10.18057/ICASS2018.P.138

ABSTRACT:

This paper presents results of an experimental investigation on the variation of ductility with changing surface roughness due to corrosion.  Tensile coupons were prepared from a naturally corroded railway bridge girder that had been in use for 77 years as well as from artificially corroded steel plates. The coupons were tested experimentally under monotonically increasing axial load. In addition, various surface roughness parameters for these coupons were determined as specified in ISO 25178-2. Results show that static ductility is influenced by the height and hybrid characteristics of the corroded steel surface. In general, ductility decreases as surface height roughness parameters increase. The mechanism of ductility decrease is attributable to stress concentration and strain localization due to surface unevenness.

Keywords:

Corrosion; Ductility; Surface roughness; Stress concentration; Strain localization

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IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM