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1

Hansson, Håkan. "Warhead penetration in concrete protective structures." Licentiate thesis, KTH, Betongbyggnad, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-48009.

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The analysis of penetration of warheads in concrete protective structures is an important part of the study of weapon effects on protective structures. This type of analysis requires that the design load in the form of a warhead is determined, and its characteristic and performance within a protective structure is known. Constitutive equations for concrete subjected to weapon effects have been a major area of interest for a long time, and several material models for concrete behaviour are developed. However, it is not until recent years that it has been possible to use finite element (FE) anal
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2

Hassanein, Alea El Din Mohamed. "Intermittent cathodic protection of reinforced concrete structures." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287182.

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3

Selander, Anders. "Hydrophobic Impregnation of Concrete Structures : Effects on Concrete Properties." Doctoral thesis, KTH, Brobyggnad inkl stålbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12179.

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Hydrophobic impregnations often referred to as water repellent agents, today mainly consisting of alkylalkoxysilanes, are often used on concrete to prolong the service life of the structure. This is accomplished by protecting the reinforcement bars from chlorides or by changing the moisture content inside. When the concrete is treated with a water repellent agent the properties of the surface layer becomes hydrophobic and thereby water droplets are stopped from entering, still allowing water vapour to pass through. This change can reduce chloride ingress and stop heavy rain from penetrating th
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4

Srour, Mahdi. "Rocking system for seismic protection of reinforced concrete structures." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3255/.

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5

Walsh, Michael Thomas. "Corrosion of Steel in Submerged Concrete Structures." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6048.

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This investigation determined that severe corrosion of steel can occur in the submerged portions of reinforced concrete structures in marine environments. Field studies of decommissioned pilings from actual bridges revealed multiple instances of strong corrosion localization, showing appreciable local loss of steel cross-section. Quantitative understanding of the phenomenon and its causes was developed and articulated in the form of a predictive model. The predictive model output was consistent with both the corrosion rate estimates and the extent of corrosion localization observed in the fiel
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6

Christodoulou, Christian. "Repair and corrosion management of reinforced concrete structures." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13577.

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The durability of concrete structures is affected by a number of factors such as environmental exposure, electrochemical reactions, mechanical loading, impact damage and others. Of all of these, corrosion of the reinforcement is probably the main cause for the deterioration of steel reinforced concrete (RC) structures. Corrosion management is becoming increasingly necessary as a result of the growing number of ageing infrastructure assets (e.g. bridges, tunnels etc.) and the increased requirement for unplanned maintenance in order to keep these structures operational throughout their design li
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7

Jappie, Luqmaan. "Literature review of the use of common protective coatings for concrete structures with experiences in the South African context." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/30127.

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INTRODUCTION The main objective of this dissertation is to compile a comprehensive literature review of surface protection systems, including their historical development, specification and use, and to conduct an industry review from the South African market. With a vast amount of deteriorating reinforced concrete structures and fast developing technology of surface treatments, it is important that engineers have a good working understanding of concrete deterioration, repair and the use of surface protection systems. Additionally, engineers need to have a good understanding of the pore struct
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8

Oleiwi, H. M. "Using cathodic protection to control corrosion of reinforced concrete structures." Thesis, University of Salford, 2018. http://usir.salford.ac.uk/47895/.

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Cathodic protection (CP) has been increasingly used on reinforced concrete structures to protect steel reinforcement from corrosion. However, due to the complexity of environmental conditions, the specifications in national and international standards are still open to discussion in engineering practices for their accurate suitability. To some extent, the design aspects are still based on practical experience. It implies a great deal of estimations and assumptions. The research conducted in the thesis aims to address some of these challenges. To obtain reliable experimental results, the presen
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9

Sohrabi, Mohammad Reza. "Thin layered systems for the repair and protection of concrete structures." Thesis, University of Newcastle Upon Tyne, 1996. http://hdl.handle.net/10443/485.

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Thin layered systems can be considered as a solution to the repair and protection of concrete structures. This subject was studied in the current investigation. Some common uses of these systems include protection, upgrading and rehabilitation of the floor slabs,restoration of appearance of the structures, impermeability, skid resistance, wear resistance, and protection of the reinforcing steel of concrete structures against atmospheric or chemical attack. However it can be said that protection, upgrading and rehabilitation of floor slabs are the main uses for the design of modem thin layered
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10

Das, S. C. "Zinc rich paint as anode system for cathodic protection (CP) of reinforced concrete structures and development of corrosion/CP monitoring probes." Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/5f6b4228-1557-4cf8-bebd-97b5b70bb594/1.

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Since mid-80‟s cathodic protection (CP) has been recognised as the „‟only technique known to stop corrosion regardless of the levels of chloride contamination in concrete‟‟ (FHWA, 1982) and is proved to be the most cost effective means to extend the useful life of the structure. Cathodic protection is an electrochemical technique to stop/mitigate corrosion by supplying „current‟ from an external source in order to suppress the „internally generated‟ current flow due to corrosion processes. The „external‟ current source could be obtained simply by coupling the steel to another electrochemically
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11

Ousset, Isabelle. "Contribution à la modélisation par éléments finis des structures en béton armé soumises à des avalanches de neige : Application à la structure de protection de Taconnaz." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0051/document.

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En zone de montagne, les avalanches de neige menacent les personnes et également les structures de génie civil. Ce travail de thèse se focalise sur une structure de protection en BA (Béton Armé) de type mur en L. L'objectif est de caler et valider un modèle EF (Elément Fini) 2D afin d'étudier le comportement de tels ouvrages sous l'effet de champs de pression induits par des avalanches de neige dense et d'évaluer leur vulnérabilité face à cet aléa naturel. Quatre lois de comportement décrivant la rhéologie du béton ont été testées en vue de reproduire le plus précisément possible la ruine du m
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12

Houndonougbo, Thierry. "Efficacitée et durabilité des revêtements en polymères pour la protection des structures en béton atteintes de réaction sulfatique interne (RSI) : de l’éprouvette à la structure." Electronic Thesis or Diss., Université Gustave Eiffel, 2024. http://www.theses.fr/2024UEFL2009.

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La réaction sulfatique interne (RSI) est une réaction de gonflement interne des matériaux cimentaires générant des contraintes importantes qui conduisent progressivement à la fissuration, à la perte de cohésion et à la ruine des structures de génie civil. Par ailleurs, les échanges hydriques entre le matériau et la lixiviation des alcalins du béton constituent des facteurs favorisant la réaction. Afin d'interrompre ces échanges, des approches par revêtement sont en cours de déploiement depuis quelques dizaines d'années. Cependant, des obstacles à la définition d'une procédure de traitement cla
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13

Le, Nguyen Khuong. "Contribution à la compréhension du comportement des structures renforcées par FRP sous séismes." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0020/document.

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Dans le cadre de la mise à niveau sismique des bâtiments existants, la technique de renforcement par placage et enrobage de polymères renforcés de fibres (FRP) offre une réponse pertinente. L’objectif de cette thèse est de proposer une modélisation fiable pour la détermination de la réponse quasi-statique et dynamique d’une grande variété d’éléments de structure et d’identifier les apports possibles d’une telle modélisation à la conception. Les stratégies de modélisation s’appuient sur l’utilisation d’éléments finis massifs ou basés sur une cinématique simplifiée (coques multicouches et poutre
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14

Lawson, K. "Corrosion monitoring and protective coating of reinforced concrete." Thesis, University of Manchester, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292460.

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15

Nicklisch, Arndt W. 1975. "Adaptively prestressed concrete structures." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9144.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.<br>Includes bibliographical references (leaves 93-96).<br>Passive structures react effectively to only one dominant loading condition. Adaptive structures in contrast can deal with multiple loading conditions and unanticipated events at the same time. Truly adaptive civil structures do not exist. Concrete structures can be made adaptive through variable prestressing. Design concepts for an adaptive prestressed concrete girder are formulated in this research. Loading conditions and desired
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16

Liu, Chi-hong. "Time-dependent behaviour of concrete structures with special reference to podium and frame structures." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B37206515.

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17

Sahafnia, Mahdi. "Concrete Structures Durability and Repair." Kansas State University, 2017. http://hdl.handle.net/2097/38425.

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Master of Science<br>Department of Civil Engineering<br>Asadollah Esmaeily<br>Reinforced concrete exceptional durability is a major reason why it is the most popular structural material in many infrastructures around the world. Most concrete structures serve for several decades; therefore problems of concrete durability gradually arise. To insure that concrete structures perform functionally, it is necessary to maintain and inspect them regularly. The durability of the reinforced concrete structures generally depends on four major factors: structure design and construction, maintenance, concre
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18

Fryer, C. "Optimum design of concrete structures." Thesis, Cardiff University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354061.

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19

Orr, John. "Flexible formwork for concrete structures." Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566135.

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Concrete, our most widely used construction material, is a fluid that offers the opportunity to economically create structures of almost any geometry. Yet this unique fluidity is seldom capitalised on, with concrete instead being cast into rigid prismatic moulds to create high material use structures with large carbon footprints. Our rate of concrete consumption means that cement manufacture alone is estimated to account for some 5% of global Carbon Dioxide emissions. This dissertation shows that by replacing conventional orthogonal moulds with a flexible system comprised primarily of high str
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20

Nazemi, Mohammad Karim. "Corrosion Study of Protective Coatings Used in Sewer Concrete Pipelines." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16505.

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Microbiologically Induced Corrosion (MIC) induced by the activity of various microorganisms including bacteria and fungi is a major problem facing water and wastewater treatment utilities around the world. Different mitigation strategies are used to combat the effect of microbial corrosion. Various polymeric coatings such as epoxy and epoxy mortar are used widely for this purpose. However, their performance is variable. More rigorous specifications are therefore required in selecting appropriate coatings. This would require an understanding of how coating properties affect their ability to res
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21

Meadows, Jason Lee. "Early-age cracking of mass concrete structures." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/MEADOWS_JASON_53.pdf.

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22

Na, Won-Bae. "Nondestructive evaluation of bar-concrete interface in reinforced concrete structures." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279890.

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The feasibility of detecting and quantifying delamination at the interface between steel (or GFRP) bar and concrete using ultrasonic guided waves is investigated in this study. These waves can propagate a long distance along the reinforcing steel (or GFRP) bar or concrete beam as guided waves and are sensitive to the interface bonding condition between the steel (or GFRP) bar and concrete. The traditional ultrasonic methods are good for detecting large voids in concrete but not very efficient for detecting delamination at the interface between concrete and steel (GFRP) bar since they use refle
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23

Meadows, Jason Lee Schindler Anton K. "Early-age cracking of mass concrete structures." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/MEADOWS_JASON_53.pdf.

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24

Liu, Chi-hong, and 廖志航. "Time-dependent behaviour of concrete structures with special referenceto podium and frame structures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38674245.

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25

Ohlsson, Ulf. "Fracture mechanics analysis of concrete structures /." Luleå, 1995. http://epubl.luth.se/avslutade/0348-8373/179/index.html.

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26

Ervine, Adam. "Damaged reinforced concrete structures in fire." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6229.

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It is crucial for a building to maintain structural stability when subjected to multiple and sequential extreme loads. Safety and economic considerations dictate that structures are built to resist extreme events, such as a earthquakes, impacts, blasts or fires, without collapse and to provide adequate time for evacuation of the occupants. However, during such events, some structural damage may be permissible. Design codes do not account for the scenario where two extreme events occur consecutively on a structure nor do they address the situation of the structure having some initial damage pri
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27

黃玉平 and Yuping Huang. "Nonlinear analysis of reinforced concrete structures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31233090.

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28

Sangi, Abdul Jabbar. "Reinforced concrete structures under impact loads." Thesis, Heriot-Watt University, 2011. http://hdl.handle.net/10399/2485.

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29

Cavaco, Eduardo Soares Ribeiro Gomes. "Robustness of corroded reinforced concrete structures." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11109.

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Dissertação para obtenção do Grau de Doutor em Engenharia Civil<br>The concept of structural robustness has seen growing interest in the last decades due to the occurrence of catastrophic consequences resulting from extreme events. The lack of structural robustness has been several times claimed as the major cause for the unmanageable consequences. However, the concept has never been accurately defined, and several different perspectives for robustness can be found in the literature. Structural robustness has been widely discussed for structures subjected to extreme events, however, the conce
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30

Vovk, S. Ya, and O. Yu Pazen. "Fire resistance of composite concrete structures." Thesis, КТИ КЧС МВД РК, 2017. http://hdl.handle.net/123456789/4038.

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31

Vovk, S. Ya, and O. Yu Pazen. "Fire resistance of composite concrete structures." Thesis, КТИ КЧС МВД РК, 2017. http://hdl.handle.net/123456789/4037.

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32

Khalid, Huma. "Objective modelling of reinforced concrete structures." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9327.

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The finite element (FE) method is a powerful technique that can provide numerical solutions to the response of reinforced concrete (RC) structures. However, results obtained from FE models are often not objective in the sense that the numerical solutions of FE models depend on aspects such as the selection of mesh size, load step size etc. FE model objectivity aims at the development of FE models for which the predicted results converge with refinement. To date, many research studies have been carried out on the objectivity of FE solutions for RC structures. However, considerable uncertainty s
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33

Feghali, Habib Labib. "Seismic performance of flexible concrete structures /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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34

Huang, Yuping. "Nonlinear analysis of reinforced concrete structures /." [Hong Kong] : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13458917.

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35

Li, Zhejian. "Folded Sandwich Protective Structures against Blast and Impact Loads." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/77387.

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In this thesis, novel folded truncated pyramid structures and a bi-directional load-self-cancelling square dome structure are proposed as the core of light-weight protective sandwich structures to resist blast and impact loads. Analytical derivations, numerical simulations, quasi-static and dynamic crushing tests are carried out to examine the dynamic crushing behaviours and energy absorption capacities of various designs for developing the best-performing core structures for blast and impact load resistance.
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36

Fosså, Kjell Tore. "Slipforming of Vertical Concrete Structures. Friction between Concrete and Slipform Panel." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-42.

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<p>Slipforming is a construction method that has been used in several decades for production of concrete structures. It is a wide range of different structures that are slipformed, but typical are vertical structures such as towers, bridge columns and offshore platforms. Slipforming are not only used for straight vertical concrete structures, but also on structures where the geometry of the structure and the wall thickness is changed. Slipforming is normally a continuous working operation (24 hours a day), which require a well-planned supply of materials. Problems that occur during this proces
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37

Cassidy, Eric Dana. "Development and Structural Testing of FRP Reinforced OSB Panels for Disaster Resistant Construction." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/CassidyED2002.pdf.

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38

Huková, Martina. "Stavebně technologická příprava prodejny Smart Light v Bratislavě." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392005.

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The main subject of this diploma thesis is elaboration of construction and technological preparation for the main structure of the Smart Light shop in Bratislava. For main structure has been processed time schedule of the construction, single item budget, machine configuration design, drawing of building site, coordination situation of the building with connection to the infrastructure, safety and health protection during work on building site. Part of the thesis is processing study of main construction technological parts. Diploma thesis in technological prescript focuses on implementation of
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39

Soleymani, Ashtiani Mohammad. "Seismic performance of high-strength self-compacting concrete in reinforced concrete structures." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/9162.

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Self-compacting concrete (SCC) was first developed in Japan about two decades ago. Since then, it has been offered as a solution to various challenges inherently associated with traditional concrete construction; i.e. quality and speed of construction, impact of unskilled labour force and noise pollution etc. SCC flows into a uniform level under its own weight and fills in all recesses and corners of the formwork even in highly congested reinforcement areas. In recent years the interest in using SCC in structural members has increased manifold; therefore many researchers have started investiga
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40

Girardi, Fabrizio. "Studies on concrete degradation in aggressive environment and development of protective system." Doctoral thesis, Università degli studi di Trento, 2009. https://hdl.handle.net/11572/368659.

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A lot of money is spent every year on the restoration of the concrete on structures and manufactured elements deteriorated by different types of degradation. Degradation of concretes is attributable to inadequate mix-design; anyway some environments are so aggressive that requiring additional care in order to increase durability. One of the most aggressive environments for concrete is acidic one, such as in the inner walls of sewer pipes. Deterioration of sewer pipes, made in concrete, is a great problem when service life is lower than 30 or less years, and maintenance or even replacement of d
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Girardi, Fabrizio. "Studies on concrete degradation in aggressive environment and development of protective system." Doctoral thesis, University of Trento, 2009. http://eprints-phd.biblio.unitn.it/118/1/Tesi_GIRARDI_FABRIZIO.pdf.

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A lot of money is spent every year on the restoration of the concrete on structures and manufactured elements deteriorated by different types of degradation. Degradation of concretes is attributable to inadequate mix-design; anyway some environments are so aggressive that requiring additional care in order to increase durability. One of the most aggressive environments for concrete is acidic one, such as in the inner walls of sewer pipes. Deterioration of sewer pipes, made in concrete, is a great problem when service life is lower than 30 or less years, and maintenance or even replacement of d
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42

Salama, Assaad Ibrahim. "Repair of earthquake-damaged reinforced concrete structures." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/7259.

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43

Bucci, Filippo. "Finite element analysis of repaired concrete structures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ40918.pdf.

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44

Ciftci, Guclu Koray. "Nonlinear Analysis Of Reinforced Concrete Frame Structures." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615549/index.pdf.

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Reinforced concrete frames display nonlinear behavior both due to its composite nature and the material properties of concrete itself. The yielding of the reinforcement, the non-uniform distribution of aggregates and the development of cracks under loading are the main reasons of nonlinearity. The stiffness of a frame element depends on the combination of the modulus of elasticity and the geometric properties of its section - area and the moment of inertia. In practice, the elastic modulus is assumed to be constant throughout the element and the sectional properties are assumed to remain const
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45

D'Argenzio, Domenic. "Inspection and repair of underwater concrete structures." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69790.

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The service life of any concrete marine structure is influenced by the physical condition of both the above water and below water portions of structure. This requires implementing an adequate inspection, maintenance, and repair program for the entire structure. To develop an effective maintenance and repair program for the submerged portion of the structure, the causes and extent of concrete distress or deterioration must be clearly understood. This requires a selective underwater condition survey, using a range of in-situ and laboratory testing and inspection techniques, to obtain the necessa
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46

Elfergani, Hisham. "Acoustic emission analysis of prestressed concrete structures." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/49383/.

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This thesis examines the role of Acoustic Emission (AE) as a non-destructive testing (NDT) technique for prestressed and reinforced concrete structures. The work focuses on the development of experimental techniques and data analysis methods for the detection, location and assessment of AE from prestressed and reinforced concrete specimens. This thesis reveals that AE can be used to detect the onset of corrosion activity in wire in the interface between prestressed concrete and mortar as found in prestressed concrete pipes. Furthermore, this technique can be used to locate the corrosion activi
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47

Gales, John Adam Brian. "Unbonded post-tensioned concrete structures in fire." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8083.

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To achieve thinner and longer floor slabs, rapid construction, and tight control of inservice deflections, modern concrete structures increasingly use high-strength, posttensioned prestressing steel as reinforcement. The resulting structures are called posttensioned (PT) concrete. Post-tensioned concrete slabs are widely believed to benefit from ‘inherent fire endurance.’ This belief is based largely on results from a series of standard fire tests performed on simply-supported specimens some five decades ago. Such tests are of debatable credibility; they do not capture the true structural beha
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48

Fejzo, R. "Dynamic behaviour of concrete structures with cracking." Thesis, Swansea University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636965.

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The subject of this thesis is the behaviour of concrete structures under dynamic loading conditions and its modelling. In particular, the modelling of material behaviour is treated and a new material model for the description of plain concrete behaviour is proposed. For the modelling of the uncracked concrete behaviour, a strain rate sensitive elasto - viscoplastic material model developed by Bicanic is used. For the modelling of cracked concete behaviour, a distributed - smeared crack representation has been adopted. Crack initiation and propagation are controlled by a crack monitoring algori
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49

Rodgers, Max D. "Repairs to concrete port and harbor structures." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26215.

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50

Buchner, Susanne. "Full scale testing of prestressed concrete structures." Thesis, University of Surrey, 1989. http://epubs.surrey.ac.uk/804425/.

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