Role of Corrosion in Life-Cycle Performance Evaluation of Existing Buildings with Steel Moment Resisting Frames: II

Chang, Heui-Yung

doi:10.4028/www.scientific.net/amm.291-294.1025

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Testing On Steel Welds With and Without Surface Rust1

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2013

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“…Compared to the variations in material strength, the effects of surface rust on weld strength can be considered small [3]. This difference can also be taken account with the effects of workmanship [4].…”

Section: Testing On Steel Welds With and Without Surface Rustmentioning

confidence: 99%

Corrosion Risk of Welded Steel Frames in the Urban Areas of Taiwan

Lin

Liou

Chang

2013

AMM

Self Cite

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This paper reviews the recent experimental work on steel welds and connections, as to investigate the effects of corrosion on steel welded frames in the urban areas in Taiwan. In the first part of the paper, the tensile strengths have been compared for steel welds with and without rust. In the worst case, the steel plates were placed outdoors for 9 months, as to cause pitting on the welding surface (i.e. the rust level was raised to the SSPC level D). The rust was found to reduce the strength 5% on average. In the second part, the hysteresis loops were depicted and compared for the 2 connections taken from an existing building. The connections were tested after being exposed to air and moisture 10 years. The non-rehabilitated connection developed strength well until the top beam flange fractured at the interstory drift over 3%. Despite that, the connection tests didnt show any impacts of corrosion. Based on the above work, corrosion can be considered to affect the steel welded frames in Taiwan, but to a limited extent.

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Section: Testing On Steel Welds With and Without Surface Rustmentioning

confidence: 99%