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Dissertations / Theses on the topic 'Concrete; Reinforcing Steel'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Miyagawa, Toyoaki. "EARLY CHLORIDE CORROSION OF REINFORCING STEEL IN CONCRETE." Kyoto University, 1985. http://hdl.handle.net/2433/74641.

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2

Al, Isa Muthena Abdul Hussain Ibrahim. "Admixtures to reduce chloride ingress into concrete." Thesis, Imperial College London, 1995. http://hdl.handle.net/10044/1/11346.

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3

Ahmad, Tavakoli K. "Reinforcing concrete slabs with steel fibers obtained from discarded cans." FIU Digital Commons, 1990. http://digitalcommons.fiu.edu/etd/1221.

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4

Nachiappan, Vijayakumar. "Corrosion of high-chromium and conventional steels embedded in concrete." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3195.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains ix, 56 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 51-52).

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5

Amleh, Lamya. "Bond deterioration of reinforcing steel in concrete due to corrosion." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36868.

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This research program consists of laboratory studies of the corrosion phenomenon and field study of the deterioration due to corrosion of the Dickson Bridge. The laboratory studies examined the influence of increasing levels of corrosion on the progressive deterioration of bond between the steel and concrete and determined the extent to which the various cements and mix proportions influence the corrosion of the reinforcement as well as the chloride ion penetration. The corrosion resistance of the fly ash concrete is examined and compared with that of plain concrete to determine the effects of

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6

García, Taengua Emilio José. "Bond of Reinforcing Bars to Steel Fiber Reinforced Concrete (SFRC)." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/32952.

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The use of steel fiber reinforced concrete (SFRC hereafter) is becoming more and more common. Building codes and recommendations are gradually including the positive effect of fibers on mechanical properties of concrete. How to take advantage of the higher ductility and energy absorption capacity of SFRC to reduce anchorage lengths when using fibers is not a straightforward issue. Fibers improve bond performance because they confine reinforcement (playing a similar role to that of transverse reinforcement). Their impact on bond performance of concrete

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7

Balakumaran, Soundar Sriram G. "Influence of Bridge Deck Concrete Parameters on the Reinforcing Steel Corrosion." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32665.

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Chloride induced corrosion of steel in concrete is one of the major forms of deterioration mechanisms found in reinforced concrete bridges. Early age corrosion damage reduces the lifespan of the bridges, which results in heavy economic losses. Research has been conducted to identify economic solutions for significantly delaying and/or preventing corrosion damage. Considering the amount of steel reinforcement used in bridge decks, the influence of as constructed parameters including clear spacing between top and bottom reinforcement bars, ratio of cathode to anode areas, and presence of stay-in

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8

Mendoza, Gomez Antonio. "Corrosion of reinforcing steel in loaded cracked concretes exposed to de-icing salts." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/786.

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The corrosion of the reinforcing steel in concrete by de-icing salts is one of the major issues concerning the durability of reinforced concrete. Different methods have been used to protect the reinforcing steel, but still corrosion of reinforced structures continues to be a big problem causing enormous costs in their restoration and rehabilitation. The continuity of the pores of concrete plays a crucial role in the corrosion of the reinforcing steel. The ingress of corrosive species, such as chloride ions, oxygen and water, through the pores of the concrete cover cause the breakdown

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9

Davies, Ronald Douglas. "Non-destructive measurement of air voids at the reinforcing steel/concrete interface." Thesis, University of London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.587063.

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Air voids are known to be sites for the initiation of corrosion in reinforcing steel bar in concrete structures. The development of suitable non-destructive methods for measuring the void content at the reinforcing steel/concrete interface would therefore provide a predictive measure of the susceptibility of a structure to future reinforcing steel corrosion, and also allow the concrete composition to be adjusted during subsequent pouring. Of particular interest here are air voids from 1 to 10 mm in size. Normal hardened concrete contains from 1 - 2 % air voids by volume. A literature survey of

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10

Pyc, Wioleta A. "Field Performance of Epoxy-Coated Reinforcing Steel in Virginia Bridge Decks." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/29399.

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The corrosion protection performance of epoxy-coated reinforcing steel (ECR) was evaluated in 18 concrete bridge decks in Virginia in 1997. The decks were 2 to 20 years old at the time of the investigation. The concrete bridge deck inspections included crack survey and cover depth determination in the right traffic lane. Maximum of 12 cores with the top reinforcement randomly located in the lowest 12th percentile cover depth and 3 cores with the truss bars were drilled from each bridge deck. The concrete core evaluation included visual examination and determination of carbonation depth, mo

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11

Belghiti, Moulay El Mehdi. "Influence of steel fibres on response of beams." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100222.

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The following thesis presents the results of six full scale beams tests as part of a research program conducted at McGill University on the effect of steel fibres on the shear capacity of a beam with an aid ratio greater than 2.5. The test specimens had the following dimensions: 4400 mm long, 300 mm wide and 500 mm long. The beams had 4-25M bottom reinforcing bars and 2-20M top reinforcing bars. Two series were designed with different reinforcing details: the "BA" series contained transverse reinforcement spaced at 275 mm center to center while the "BB" series had no transverse reinforcement.

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12

Smolinski, Laura J. "Influence of Reinforcing Steel Parameters on the Formation of the Passive Layer." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31323.

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Corrosion in reinforced concrete bridge decks has always been a concern amongst engineers. However, as structures continue to increase in size and in the amount of reinforcement present, consideration must be given to parameters such as the clear spacing arrangements between bars, the presence and absence of stay-in-place (SIP) forms, and differences in the cathode bar to anode bar ratios. Limited research has been performed to determine the effects of the parameters (Shiessel, P. 1986). Research has been conducted on the effects of macrocell corrosion compared to microcell corrosion. Prev

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13

Amleh, Lamya. "Influence of corrosion of reinforcing bars on the bond between steel and concrete." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24050.

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Tension tests have been carried out for a preliminary study of the influence of the steel reinforcement corrosion on bond behaviour. The bond strength was studied through both transverse and longitudinal splitting cracks and a relative bond effectiveness of the corroded bars was determined from the crack spacing. Different stages of the corrosion were established to study their relative bond behaviour, ranging from no corrosion to complete corrosion at the steel-concrete interface. These stages have been achieved by using an accelerated corrosion method. An electrochemical method was used to a

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14

Scott, Allan Nye. "The influence of binder type and cracking on reinforcing steel corrosion in concrete." Doctoral thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/5001.

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Includes bibliography.<br>Two of the main factors affecting the durability of reinforced concrete structures are the level of chlorides required to initiate corrosion and the subsequent rate of penetration of chloride ions through concrete. The primary focus of the current work is the study of how cement extenders impact on the corrosion characteristics of embedded steel in concrete. The investigation was limited to those materials commonly used in South Africa (slag, fly ash,and condensed silica fume) and performed under laboratory conditions at 30°C.

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15

Brown, Michael Carey. "Corrosion Protection Service Life of Epoxy Coated Reinforcing Steel in Virginia Bridge Decks." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27690.

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The corrosion protection service life extension provided by epoxy-coated reinforcement (ECR) was determined by comparing ECR and bare bar from 10 bridge decks built between 1981 and 1995. The objective was to determine the corrosion protection service life time extension provided by ECR field specimens with various degrees of coating adhesion: disbonded, partially disbonded, and wholly bonded coatings. The size and length distributions of cracks in Virginia bridge decks were investigated to assess the frequency and severity of cracks. Correlation of cracks with chloride penetration was used

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16

Accardi, Adrienne. "Corrosion of Dual Coated Reinforcing Steel with Through-Polymer Breaks in Simulated Concrete Pore Solution." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1556.

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This investigation is an examination of the behavior of dual coated reinforcing steel (DCR) with defects in the polymer coating exposing the only zinc layer in simulated concrete pore solution with and without chlorides. The intentional defects simulated the condition typically experienced by the rebar in service. Specimens were tested at open circuit potential, +100 mV, -500 mV, and -1000 mV for 30 to 100 days. The results were compared with that from previous DCR investigation with to-steel defects and epoxy-coated rebar (ECR). DCR with to-zinc defects had extensive corrosion damage when und

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17

Kosalla, Marc [Verfasser], Michael [Akademischer Betreuer] Raupach, and Wolfgang [Akademischer Betreuer] Breit. "Critical chloride content of reinforcing steel in concrete : influence of anodic polarization, steel/concrete interface quality and sampling accuracy / Marc Kosalla ; Michael Raupach, Wolfgang Breit." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1192375416/34.

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18

Brown, Michael Carey. "Assessment of Commercial Corrosion Inhibiting Admixtures for Reinforced Concrete." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/36386.

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Corrosion of reinforcing steel in concrete exposed to chloride-laden environments is a well-known and documented phenomenon. The need for cost effective systems for protection against corrosion has become increasingly clear since the first observations of severe corrosion damage to interstate bridges in the 1960's. As one potential solution to the mounting problem of corrosion deterioration of structures, corrosion-inhibiting admixtures have been researched and introduced into service. This report conveys the results of a three-part laboratory study of corrosion inhibiting admixtures in con

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19

Less, Thomas Matthew. "Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing Bars." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366222349.

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20

Gravina, Rebecca Jane. "Non-linear overload behaviour and ductility of reinforced concrete flexural members containing 500MPa grade steel reinforcement." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phg777.pdf.

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Includes corrigenda (inserted at front) and list of publications published as a result of this research. Includes bibliographical references (leaves 192-199) Investigates the overload behaviour and modes of collapse of reinforced concrete flexural members containing 500MPa grade reinforcing steel and evaluates the adequacy of current ductility requirements for design according to AS 3600 to ensure strength and safety.

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21

Sappakittipakorn, Manote. "Microstructural refinements of concrete due to fiber reinforcement and its influence on corrosion initiation of reinforcing steel." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/29029.

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Permeability plays an important role in governing the durability of concrete in deleterious environments. Earlier studies indicated that the addition of cellulose fiber is effective in reducing water permeability and thereby making concrete more durable. In this thesis, microstructural refinement and corrosion resistivity performance of fiber reinforced concrete (FRC) were studied. Two fiber types, cellulose and polypropylene, at various dosages, were examined. Microstructural refinement was studied using thermoporometry (TP) and mercury intrusion porosimetry (MIP) methods. After that, a two-

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22

Pyc, Wioleta A. "Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36569.

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Three epoxy-coated reinforcing steel (ECR) types removed from job sites, one shipped directly from the coater's plant, three commercial corrosion inhibitors, and one ECR plus a corrosion inhibitor were evaluated as reinforcing steel corrosion protection systems against chloride induced corrosion. The three corrosion inhibitors were calcium nitrite, an aqueous mixture of esters and amines, and a mixture of alcohol and amine. The ECR was tested in two groups, 0% and 1% coating damage. Corrosion protection performance was evaluated by the amount of visually observed blister surface area, for the

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23

Navarro, D., R. Valero, and J. Orihuela. "Evaluation of the Influence of Different Grades of Reinforcing Steel on the Seismic Performance of Concrete reinforced Frame Structures with Nonlinear Static Analysis." IOP Publishing Ltd, 2021. http://hdl.handle.net/10757/655954.

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In this investigation, the elasto-plastic behavior and the seismic performance of concrete reinforced frame structures reinforced are evaluated by applying the Pushover method. This evaluation is done on several cases: with high ductility steel (Grade 40), conventional steel (Grade 60) and high strength steel (Grade 75). For the previous, the capacity curve graph obtained from the displacement coefficient method was used to measure the capacity of the structure. In addition, the performance of the structure for different levels of seismic design are evaluated with the resulting values of ducti

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24

Wheeler, Megan Caroline. "Parameters Influencing the Corrosion Protection Service Life of Epoxy Coated Reinforcing Steel in Virginia Bridge Decks." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9687.

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This study is an evaluation of epoxy coated reinforcing steel (ECR) and its ability to effectively provide corrosion protection in reinforced concrete highway bridge decks. An analysis was conducted on 10 bridge decks built in the state of Virginia between the years 1981 and 1995. A total of 141 cores containing either ECR or bare steel were evaluated. A chloride solution was applied to the surface on a weekly cycle (for a total duration of 3.06 years) and a nondestructive electrochemical testing was performed on each core on a monthly cycle. Cores were also inspected for surface cracks, the

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25

Kondratova, Irina. "Epoxy coating and other protective measures for reinforcing steel embedded in concrete subjected to a chloride laden environment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0020/NQ54594.pdf.

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26

Fernandes, Bertrand. "Development of a Magnetic Field Sensor System for Nondestructive Evaluation of Reinforcing Steel in Prestressed Concrete Bridge Members." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352760825.

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27

Barrus, Natasha Christine. "Sensitivity of Resistivity Measurements on Concrete Bridge Decks to Operator-Controlled and Concrete Material Variables." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3203.

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The objectives of this research were to investigate the sensitivity of two-prong and fourprong resistivity measurements to certain operator-controlled variables and to conduct a direct comparison of the sensitivity of two-prong and four-prong resistivity measurements to certain concrete material variables. Four full-factorial experiments were designed for this research. In the experimentation on operator-controlled variables with two-prong resistivity testing, main effects that are both statistically significant and practically important include hole depth and surface water. In the experimenta

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28

Dugarte, Margareth. "Polarization of Galvanic Point Anodes for Corrosion Prevention in Reinforced Concrete." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3466.

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The polarization performance of two types of commercial galvanic point anodes for protection of reinforced steel around patch repairs was investigated. Experiments included measurement of the polarization history of the anode under constant current impressed by galvanostatic circuits and in reinforced concrete slabs. The tests revealed, for both types of anodes, a potential-current function (PF) indicating relatively little anodic polarization from an open circuit potential at low current levels, followed by an abrupt increase in potential as the current approached an apparent terminal value.

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29

Hoki, Jeffrey Ryan. "Analysis of Selected Factors Affecting Concrete Cover Measurements on Bridge Decks." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2617.

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The objective of this research was to quantify the effects of selected parameters on the accuracy of concrete cover measurements on bridge decks. This research involved three full-factorial laboratory experiments each designed to investigate one of three primary variables. These primary variables included distance to a parallel adjacent bar, distance to a reinforcement intersection, and incorrect bar size input for the cover meter. Each experiment also involved four secondary variables known to affect cover readings. These secondary variables included actual cover depth, meter brand, antenna t

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30

Konečný, Vlastimil. "Návrh a posouzení sportovní haly." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227621.

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Aim of the diploma's thesis is to design selectedelements of sports hall. It is a single-storey object, where the main structural system consists of a frame of columns and prestressed girder. Design of elements is done according to limit states. To determine the effects of internal forces is used computational software Scia Engineer 2008.Outputs from computational software are compared with simplified manual calculation. There’s performed assessment and reinforcement of selected elements. For each element are drawn production drawings and reinforcement drawings. There are also prepared drawing

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31

Chabi, Parham. "Comparative Investigation of Detection Techniques for Chloride-induced Corrosion of Loaded Reinforced Concrete Slabs." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23170.

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This study involved a comparative investigation of chloride-induced corrosion detection techniques on loaded reinforced concrete slabs which were exposed to deicing salts and wetting-drying cycles to simulate typical aggressive environments in cold climates. The studied techniques involved linear polarization technique, galvanostatic pulse technique, electrochemical impedance spectroscopy, half-cell potential and concrete electrical resistivity mapping. The results showed that concrete quality and moisture content have a direct effect on corrosion activity, and these properties are represente

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32

Popovič, Tomáš. "Návrh konstrukce pro fotbalové hřiště." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240365.

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This diploma thesis deals with the static review of structure for a football pitch. It is crosswise prestressed reinforced sliding plate with variable cross section. Assessment of the elements was done according to limit states. Internal forces from the load effects were calculated using the SW SciaEngineer 2015.1. The elements were assessed by SW Idea StatiCa 6. The main outputs of this static calculation are drawings of the shape and drawings of the reinforcement.

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33

Hamrlík, Martin. "Porovnání návrhu ŽB konstrukcí podle EN a ACI." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227755.

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The thesis is focused on the opinion of an office building from the perspective of two different standards and comparing their approaches. These standards is a currently valid European Standard EN 1992-1-1 (EC2) and standard according to US standards ACI 318-11. In this work were considered pillars in the second basement and on the first floor. Was also assessed locally supported slab above the 1st floor and staircase connects the individual floors. All the completed elements were assessed according to the 1st ultimate limit state.

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34

Tabalaiev, Kostiantyn. "Etude de la structure et des propriétés de l'acier à béton après déformations à froid." Phd thesis, Ecole Centrale de Lyon, 2010. http://tel.archives-ouvertes.fr/tel-00566878.

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Les propriétés généralement demandées aux armatures pour béton armé doivent répondre à des exigences particulières précisées dans des normes nationales, européennes et internationales. Actuellement, dans la pratique de la production de l'acier à béton, on tend à substituer différentes nuances d'armature par une armature unifiée ayant une valeur de limite d'élasticité minimale de 500 MPa. Le remplacement des ronds à béton de nuance 400MPa par cette armature conduit à une économie de métal de l'ordre de 10-20 % d'après les estimations de différents spécialistes.Il existe, généralement, plusieurs

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35

Luža, Radim. "Železobetonová monolitická vícepatrová skeletová konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409799.

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The subject of this diploma thesis is a static solution of selected load-bearing structures of a polyfunctional building. The structures are designed according with ČSN EN 1992-1-1: Design of concrete structures - Part 1-1: General rules and rules for building construction

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Koch, Filip. "Statická analýza konstrukce administrativní budovy." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226800.

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Diploma thesis deals with static analysis of supporting structure of multifunctional building with an atypical floor plan shape. Thesis contains static reports of the main elements of the structure. The lower construction is made of reinforced concrete. The upper structure consists a steel frame and composite elements.

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OLIVEIRA, Andrielli Morais de. "AVALIAÇÃO DO DESEMPENHO DE CONCRETOS COM ADIÇÕES MINERAIS QUANTO À CORROSÃO DAS ARMADURAS INDUZIDA POR CLORETOS." Universidade Federal de Goiás, 2007. http://repositorio.bc.ufg.br/tede/handle/tde/673.

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Made available in DSpace on 2014-07-29T15:03:38Z (GMT). No. of bitstreams: 1 dissertacao Adrielli.pdf: 5370662 bytes, checksum: 4e167ff0f119f9298b4d7ed2791baa06 (MD5) Previous issue date: 2007-08-29<br>The present work aims to study the performance of concrete with regard to the action of chloride ions, evaluating the influence of both mineral additions and water/binder ratio (w/b), considering kinetic and thermodynamic aspects of the corrosive phenomenon. A experimental research was carried out considering the following variables: the presence of mineral additions in partial substitution to

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Mendoza, Antonio R. "Corrosion of reinforcing steel in loaded cracked concretes exposed to de-icing salts." Waterloo, Ont. : University of Waterloo, [Dept. of Mechanical Engineering], 2003. http://etd.uwaterloo.ca/etd/armendoz2003.pdf.

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Thesis (M.A.Sc.)--University of Waterloo, 2003.<br>"A thesis presented to the University of Waterloo in fulfilment of the thesis requirement for the degree of Master of Applied Science in Mechanical Engineering." Includes bibliographical references.

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Cetkovský, Jan. "Statický návrh nosných konstrukcí bytového domu v Praze." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265290.

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The diploma thesis is aimed for design of load-bearing structures of residental building. The designed parts of building are reinforced concrete two way slab with lintels above 1th floor, reinforced concrete two way cantivelered slab above ground floor, reinforced concrete point-supported slab below ground floor, reinforced concrete columns in basement, reinforced concrete staircase in basement and static check of loadbearing walls in ground floor. The thesis contains static design, which is provided in calculated software RFEM Dlubal 5.07. The result of static design is drawing documentation

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Islam, Mohammad. "Corrosion of Alternative Grades of Reinforcing Steel in Concrete." Thesis, 2010. http://hdl.handle.net/10012/5396.

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Reinforcing steel in concrete has been used for many years in roads, bridges and other structures to give strength and durability; concrete has only good compressive strength and reinforcing steel gives the tensile strength to the concrete to sustain both the compressive and tensile load, making concrete structures to be used in the common as well as critical areas. Reinforcing steel that was used in structures predominantly is mild steel, which is considerably cheaper than stainless steel, and more susceptible to corrosion leading to the damage of the structures and less longevity. To solve

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莊敬. "Evaluating the Location of Reinforcing Barsin Steel Fiber Reinforced Concrete." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/85144956943216421176.

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碩士<br>建國科技大學<br>土木與防災研究所<br>99<br>The main purpose of this research is to provide a rebar cover depth inspection method for steel fiber reinforced concrete. The said cover depth is an essential factor for qc inspection, as it tends to affect the bond properties and strength development between rebar and concrete. In engineering practice, the cover meter applying the magnetic and electrical method is widely used for the inspection of rebar cover depth. However, such a method would be seriously affected by Induced current when encountering the steel fiber. For this reason, another effective insp

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42

Chang, Chien-hung, and 張建鴻. "Compressive behavior of high fiber-reinforcing steel fiber reinforced concrete." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81704877095065346653.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>98<br>Compression tests of cylinder specimens carried out to characterize the compressive stress-strain behavior of steel fiber reinforced concrete (SFRC) are reported. Hooked-end fibers with different lengths and aspect ratios were considered. The reinforcing index in terms of volume fraction of fibers ranged from 0.4 to 1.7. Test results from this research and from other studies indicate that toughness index is a more appropriate quantity than toughness ratio in evaluating the toughness of SFRC. Steel fibers of a longer length and a smaller aspect ratio have a bett

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43

Seliem, Hatem Mohamed A. "Behavior of concrete bridges reinforced with high-performance steel reinforcing bars." 2007. http://www.lib.ncsu.edu/theses/available/etd-05042007-174633/unrestricted/etd.pdf.

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44

Tai, Chun-Hsuan, and 戴群軒. "A Study on Chloride Content for Corrosion of Reinforcing Steel in Concrete." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/23889564045855678241.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>100<br>The subject of the thesis is to study the effect of different mix proportion on the durability of concrete through setting several w/b ratio (0.35, 0.45, 0.55, 0.65) and pozzolanic material substitution (fly ash replaces cement for 10%, 20%, 30%; slag replaces cement for 15%, 30%, 50%). Salt ponding test was conducted to simulate the situation of exposure to chloride of specimen, and to judge the ability of concrete of resisting chloride permeation and the capability of protecting reinforcing steel from corrosion. Besides, Gecor 8, made by James Instruments,

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45

Hunt, Matthew. "Effects of De-icing and Anti-icing Chemicals on the Durability of Reinforcing Steel in Concrete." Thesis, 2013. http://hdl.handle.net/10012/7913.

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Concrete is strong in compression; however, it is quite fragile in tension. To overcome this flaw, concrete is frequently reinforced with bars typically made of low grade, low carbon steel. The environment inside of concrete is favorable for steel; unfortunately when passive steel is exposed to chlorides, active corrosion can initiate, resulting in damage to the structure. One source of chloride contamination is through anti-icing agents which are used to inhibit the formation of ice on roadways, ensuring safe driving conditions. This represents a serious concern from both the cost associated

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"Corrosion Cell Formation on a Bar Embedded in Concrete Exposed to Chlorides." Thesis, 2013. http://hdl.handle.net/10388/ETD-2013-08-1153.

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This thesis investigated corrosion of a reinforcing steel bar embedded in concrete and the effect of corrosion coupling on the bar/concrete interface induced by the variation of corrosion potentials with concrete depth. Two separate numerical models were used to simulate the corrosion process which included: a two-dimensional finite element model for mass transport of oxygen and chloride to the bar/concrete interface; and, a one-dimensional model for the corrosion current flow through the electrolyte induced by corrosion potential differences on the bar/concrete interface. A novel approach

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Human, Johannes Jurie. "Local buckling of axially loaded type 3CR12 corrosion resisting steel built-up columns." Thesis, 2014. http://hdl.handle.net/10210/9278.

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M.Ing.<br>Design parameters for ferritic type stainless steel structural members do not exist and is needed. This study attempts to find design parameters for ferritic type stainless steel compression elements. The ferritic type stainless steel under consideration in this study is Type 3CR12 corrosion resisting steel, which is a modified Type 409 stainless steel. The purpose of this study was to determine the limiting web width-to-thickness and flange width-to-thickness ratios for the prevention of local buckling in axially loaded hotrolled Type 3CR12 corrosion resisting steel columns. Experim

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Chen, Yan Ting, and 陳彥廷. "Effects of Concrete Carbonation on the Behavior of Corrosion of the Reinforcing Steel." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/87781715326369411497.

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Lai, Ke-Jie, and 賴可捷. "A study on Critical Chloride Ion Concentration for Corrosion of Reinforcing Steel in Concrete." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/09677144053686163255.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>103<br>Taiwan is surrounded by sea, so the reinforced concrete structures are exposed to corrosive environments. When chloride ions penetrated into the concrete, to reach a certain concentration, the reinforcing steel surface passive layer will be destroyed and cause the steel corrosion, it will reduce structure strength and stiffness. Therefore, the reinforcing steel corrosion is the main factors to structures life and security. This study added different concentrations of chloride salts via the mixing water to simulate the reinforcing steel corrosion situation at

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Chih-WeiHuang and 黃智暐. "Splice Length of Steel Reinforcing Bars in Ultra high performance fiber reinforced concrete beams." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/a9qbzq.

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碩士<br>國立成功大學<br>土木工程學系<br>107<br>Due to the lack of test data on the bond strength of deformed reinforcing bars embedded in Ultra-high performance fiber reinforced concrete (UHPFRC), ACI-318-19 building code requirements imposed an upper limit of 70 MPa on compressive strength of concrete that may be used in calculating tension development length and tension splice length. To evaluate the applicability of ACI-318-19 design provisions for calculating splice length of UHPFRC, sixteen simply supported beam specimens were fabricated and tested in this experimental program. Each beam was designed w

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