國立虎尾科技大學 |

Corrosion Propagation of Stainless Steel Reinforced Concrete.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Corrosion Propagation of Stainless Steel Reinforced Concrete./
作者:	Orozco Martinez, Nelly Sofia.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	160 p.
附註:	Source: Masters Abstracts International, Volume: 83-02.
Contained By:	Masters Abstracts International83-02.
標題:	Corrosion. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28643638
ISBN:	9798534695465

Corrosion Propagation of Stainless Steel Reinforced Concrete.
Orozco Martinez, Nelly Sofia.

Corrosion Propagation of Stainless Steel Reinforced Concrete. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 160 p.

Source: Masters Abstracts International, Volume: 83-02.

Thesis (M.S.C.E.)--University of South Florida, 2021.

This item must not be sold to any third party vendors.

Structural durability is a growing concern in global infrastructure. The infrastructure report card released by the American Society of Civil Engineers (ASCE) indicates that approximately 9.1% of the total bridges in the United States were structurally deficient in 2016. In addition, it suggests that about 40% of the total bridges in the country are now 50 years or older. This issue becomes even more critical in structures exposed to aggressive environments such as marine structures. Thus, federal and regional efforts are now being directed towards infrastructural durability improvement to improve the long-term cost-efficiency of civil infrastructure.Corrosion prevention strategies may include increased concrete cover thickness, higher concrete quality, and corrosion-resistant alloys (CRAs) such as stainless steel (SS). Over the past couple of decades, SS reinforcement has garnered attention due to its increased service life. Several investigations have found that the life cycle cost of structures reinforced with SS may be considerably lower than that of plain carbon steel (CS). The service life of steel reinforcement may be divided into two stages: the corrosion initiation stage (CIS) and corrosion propagation stage (CPS). The durability of SS reinforcement has been commonly approached using the model proposed by Tuutti [6] where the service life of a structure, which is the time required for corrosion loss in the steel to reach a serviceability limit state, is determined by the added duration of the CIS and the CPS.The increased durability of SS reinforcement has been primarily attributed to a greater corrosion initiation threshold (CT) which could be up to one order of magnitude greater when compared to that of CS. Nevertheless, no significant benefit has yet been associated to extensions in the subsequent CPS. Hence, existing durability projections of concrete reinforced with SS are limited by the scarce information available regarding the CPS, leading to highly conservative approaches based on investigations performed on concrete reinforced with CS. This investigation compiles relevant information from the literature of the CPS focusing on the few cases where SS reinforcement had reached, and preferably finalized, the corrosion propagation stage. Where literature evidence of SS reinforcement was not available, findings from CS reinforcement were considered. The information garnered was compared to laboratory experimental and computational model simulation results obtained at the Infrastructural Corrosion Laboratory of the University of South Florida. This work focused on identifying influential parameters that may play a major role in estimating the duration of the CPS. The CPS of SS reinforcement was assessed in terms of four governing factors consisting of the corrosion morphology, corrosion products, corrosion rates, and the limit state. Different failure mechanisms were examined as a first approach to determine the expected limit state of concrete reinforced with SS. The effect of the concrete condition -i.e., sound and locally-deficient-, on the potential limit state of SS reinforced concrete was also considered. Experimental results and available evidence from previous investigations served as inputs to update estimates of duration of the CPS of concrete reinforced with SS in current civil engineering practice. The reliability of traditional corrosion detection and monitoring techniques -i.e., half-cell potential and electrochemical impedance spectroscopy- was examined for SS reinforcement. Current standards relating the probability of corrosion damage and experimental measurements are based on CS reinforcement. Findings from this research suggest that the existing relations may not be applicable to SS reinforcement and that further work is required to develop similar relations that consider the CPS parameters of SS reinforcement.

ISBN: 9798534695465Subjects--Topical Terms:

995076
Corrosion.
Subjects--Index Terms:

Corrosion detection

Corrosion Propagation of Stainless Steel Reinforced Concrete.
LDR:05181nam a2200421 4500 001 1067214
005 20220823142318.5
008 221020s2021 ||||||||||||||||| ||eng d
020 $a 9798534695465
035 $a (MiAaPQ)AAI28643638
035 $a AAI28643638
040 $a MiAaPQ $c MiAaPQ
100 1 $a Orozco Martinez, Nelly Sofia. $3 1372664
245 1 0 $a Corrosion Propagation of Stainless Steel Reinforced Concrete.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 160 p.
500 $a Source: Masters Abstracts International, Volume: 83-02.
500 $a Advisor: Alexander, Christopher L.
502 $a Thesis (M.S.C.E.)--University of South Florida, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Structural durability is a growing concern in global infrastructure. The infrastructure report card released by the American Society of Civil Engineers (ASCE) indicates that approximately 9.1% of the total bridges in the United States were structurally deficient in 2016. In addition, it suggests that about 40% of the total bridges in the country are now 50 years or older. This issue becomes even more critical in structures exposed to aggressive environments such as marine structures. Thus, federal and regional efforts are now being directed towards infrastructural durability improvement to improve the long-term cost-efficiency of civil infrastructure.Corrosion prevention strategies may include increased concrete cover thickness, higher concrete quality, and corrosion-resistant alloys (CRAs) such as stainless steel (SS). Over the past couple of decades, SS reinforcement has garnered attention due to its increased service life. Several investigations have found that the life cycle cost of structures reinforced with SS may be considerably lower than that of plain carbon steel (CS). The service life of steel reinforcement may be divided into two stages: the corrosion initiation stage (CIS) and corrosion propagation stage (CPS). The durability of SS reinforcement has been commonly approached using the model proposed by Tuutti [6] where the service life of a structure, which is the time required for corrosion loss in the steel to reach a serviceability limit state, is determined by the added duration of the CIS and the CPS.The increased durability of SS reinforcement has been primarily attributed to a greater corrosion initiation threshold (CT) which could be up to one order of magnitude greater when compared to that of CS. Nevertheless, no significant benefit has yet been associated to extensions in the subsequent CPS. Hence, existing durability projections of concrete reinforced with SS are limited by the scarce information available regarding the CPS, leading to highly conservative approaches based on investigations performed on concrete reinforced with CS. This investigation compiles relevant information from the literature of the CPS focusing on the few cases where SS reinforcement had reached, and preferably finalized, the corrosion propagation stage. Where literature evidence of SS reinforcement was not available, findings from CS reinforcement were considered. The information garnered was compared to laboratory experimental and computational model simulation results obtained at the Infrastructural Corrosion Laboratory of the University of South Florida. This work focused on identifying influential parameters that may play a major role in estimating the duration of the CPS. The CPS of SS reinforcement was assessed in terms of four governing factors consisting of the corrosion morphology, corrosion products, corrosion rates, and the limit state. Different failure mechanisms were examined as a first approach to determine the expected limit state of concrete reinforced with SS. The effect of the concrete condition -i.e., sound and locally-deficient-, on the potential limit state of SS reinforced concrete was also considered. Experimental results and available evidence from previous investigations served as inputs to update estimates of duration of the CPS of concrete reinforced with SS in current civil engineering practice. The reliability of traditional corrosion detection and monitoring techniques -i.e., half-cell potential and electrochemical impedance spectroscopy- was examined for SS reinforcement. Current standards relating the probability of corrosion damage and experimental measurements are based on CS reinforcement. Findings from this research suggest that the existing relations may not be applicable to SS reinforcement and that further work is required to develop similar relations that consider the CPS parameters of SS reinforcement.
590 $a School code: 0206.
650 4 $a Corrosion. $3 995076
650 4 $a Morphology. $3 1183868
650 4 $a Reinforced concrete. $3 808943
650 4 $a Stainless steel. $3 716611
650 4 $a Ductility. $3 1372524
650 4 $a Concrete. $3 867676
650 4 $a Spectrum analysis. $3 582358
650 4 $a Chloride. $3 1372665
650 4 $a Propagation. $3 1372600
650 4 $a Laboratories. $3 639256
650 4 $a Materials science. $3 557839
650 4 $a Engineering. $3 561152
650 4 $a Civil engineering. $3 561339
653 $a Corrosion detection
653 $a Corrosion Resistant Alloys
653 $a Durability
653 $a Infrastructure
653 $a Service life
653 $a Stainless Steel
653 $a Concrete
653 $a Corrosion Propagation Stage
690 $a 0543
690 $a 0794
690 $a 0537
690 $a 0287
710 2 $a University of South Florida. $b Civil and Environmental Engineering. $3 1185166
773 0 $t Masters Abstracts International $g 83-02.
790 $a 0206
791 $a M.S.C.E.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28643638