Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete

Wang, Peng-Hui; Huang, Qiao; Chen, Kefan; Li, Yuanke; Feng, Qiong

doi:10.1007/s12205-020-1970-5

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…Equation ( 7) defines the durability prediction life of one component, while Equation (8) defines the time from corrosion initiation to concrete cover cracking as the critical corrosion depth of rebar divided by the corrosion rate of rebar. Equation (9) expresses that the corrosion rate of rebar is related to the environmental factors and concrete compressive strength, rather than the rebar itself. Only Equation ( 10) is directly affected by the rebar type in the calculation process.…”

Section: The Time From Corrosion Initiation To Concrete Cover Crackingmentioning

confidence: 99%

“…In the current state, almost all studies related to durability prediction and corrosion induced cracking for reinforced concrete (RC) components and structures focus on the round rebar cases [1][2][3][4][5][6][7][8][9][10]. The concrete structure design standards and codes in many countries and states also default that the type of reinforcement is round steel rebar [11][12][13], without any application description for square steel rebar.…”

Section: Introductionmentioning

confidence: 99%

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A Durability Prediction Method for Historical Square Rebar Reinforced Concrete Buildings

et al. 2021

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Square rebars were developed and used for decades in the early development of reinforced concrete (RC) structures; however, the objectives of modern concrete structure durability analyses and standards are centered on round rebars in past decades, which are not suited for RC buildings utilizing square rebars. Considering the absence of proper evaluation techniques to evaluate the square rebar RC structures’ durability accurately, a novel durability prediction method has been proposed for this type of historical building. The method is based on major parts as in-situ investigation, finite element model simulation, component importance analysis, and structural durability prediction. The durability prediction calculation method was established on the experimental results of the realistic historical concrete tests and corrosion-induced cover cracking experiments for square rebar components. It was found that the carbonization-resistant ability of historical concretes was relatively weaker than that of current concretes and the calculation method for critical corrosion depth of square rebar was different from that of round rebar. Furthermore, two typical application cases are presented to introduce the procedure of the method in detail. Consequently, the research outcomes can be directly used on the durability prediction and protection works for historical RC buildings.

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Section: The Time From Corrosion Initiation To Concrete Cover Crackingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Durability Prediction Method for Historical Square Rebar Reinforced Concrete Buildings

et al. 2021

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“…Several studies have been published concerning the problems related to the corrosion-induced cover cracking time. These studies include experimental studies (Andrade, Alonso, and Molina 1993;Vu, Stewart, and Mullard 2005;Lu, Jin, and Liu 2011;Mullard and Stewart 2011;Ye et al 2018;Chen, Baji, and Li 2018;Wang et al 2020), theoretical analyses (El Maaddawy and Soudki 2007;Lu, Jin, and Liu 2011;Mullard and Stewart 2011;Malumbela, Alexander, and Moyo 2011), and numerical models (Castorena et al 2008;Xiao, Ying, and Shen 2012;Chernin and Val 2011;Srubar 2015;Stambaugh, Bergman, and Srubar 2018). Nevertheless, all these published studies have focused only on round-rebars, while square-rebars have been ignored.…”

Section: Introductionmentioning

confidence: 99%

Square-rebar corrosion-induced cover cracking and its time prediction for historical reinforced concrete buildings in China

Jin

Chun

Hua

et al. 2021

Journal of Asian Architecture and Building Engineering

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Square-rebars have been used in many historical reinforced concrete buildings worldwide. The durability and structural behavior of such historical buildings should be evaluated regularly and accurately. The prediction of the corrosion-induced cracking time is a critical element for the durability evaluation work. This study demonstrates a mathematical model for the corrosion-induced cover cracking for square-rebars and its time prediction method. The research methodology includes theoretical derivation and experimental validation. First, a simplified model that describes the corrosion-induced cover cracking for square-rebars is proposed, and then, Faraday's law is combined with the model to develop a time prediction model for corrosion-induced cover cracking. Finally, an accelerated corrosion experiment for squarerebars is performed to validate the applicability and accuracy of the prediction model.

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Frost Resistance of Magnesium Oxychloride Cement Mortar Added with Highland Barley Straw Ash

Cao

Huang

Wang

et al. 2022

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete

Cited by 8 publications

References 30 publications

A Durability Prediction Method for Historical Square Rebar Reinforced Concrete Buildings

A Durability Prediction Method for Historical Square Rebar Reinforced Concrete Buildings

Square-rebar corrosion-induced cover cracking and its time prediction for historical reinforced concrete buildings in China

Frost Resistance of Magnesium Oxychloride Cement Mortar Added with Highland Barley Straw Ash

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