Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 234, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.117393
Keywords
Weathering steel; Rust layer; Adhesion capability; Tension; Corrosion behavior; Critical stress
Categories
Funding
- National Natural Science Fund of China [51578370]
- Natural Science Fund of Tianjin [16JCZDJC40300, 16YFZCSF00460]
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This paper presents an investigation into the adhesion capability of rust layer under tension, which is formed on weathering steel (WS) in simulated marine atmosphere. The electrochemical response of pre-rusted WS specimens after tension was employed to explore insights into the corrosion behavior after cracking or delaminating of rust layer. The rust layer formed on Q420qNH exhibited the stronger adhesion capability than Q420qNHY. The steel presented a gradually accelerated corrosion process as increasing external load. The 0.9f(y) for Q420qNH and 0.8f(y) for Q420qNHY were suggested as the critical stress for the durability design of WS bridges in coastal areas. (C) 2019 Elsevier Ltd. All rights reserved.
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