Dissertations / Theses on the topic 'Prestressed concrete beams Prestressed concrete beams Flexure'

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1

Chan, Ka-ho Enoch. "Experimental and numerical studies of concrete beams prestressed with unbonded tendons." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40988004.

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2

Saeed, Yasir Matloob. "Behavior of Prestressed Concrete Beams with CFRP Strands." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2726.

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The high cost of repairing reinforced or prestressed concrete structures due to steel corrosion has driven engineers to look for solutions. Much research has been conducted over the last two decades to evaluate the use of Fiber Reinforced Polymers (FRPs) in concrete structures. Structural engineering researchers have been testing FRP to determine their usability instead of steel for strengthening existing reinforced concrete structures, reinforcing new concrete members, and for prestressed concrete applications. The high strength-to-weight ratio of FRP materials, especially Carbon FRP (CFRP),
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3

Chan, Ka-ho Enoch, and 陳家灝. "Experimental and numerical studies of concrete beams prestressed with unbonded tendons." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40988004.

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4

Maghsoudi, Ali Akbar. "The behaviour of flanged, and composite prestressed concrete beams under torsion and flexure." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237253.

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5

Ali, Alameer. "Behaviour of Prestressed Ultra-High Performance Concrete I-Beams Subjected to Shear and Flexure." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24280.

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Ultra-high performance concrete (UHPC) is a new type of concrete developed by selecting the particle sizes and gradation in the nano- and micro-scales targeting the highest possible packing. The resulting concrete with very high density is called UHPC. UHPC has very low permeability and hence it is very highly durable compared to traditional or high performance concrete (HPC). Micro reinforcement of UHPC by random distributed steel-synthetic fibers results in superior mechanical properties such as very high compressive and tensile strengths, high ductility, and high fatigue resistance. The mat
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6

Agapay, Alison. "Test of prestressed concrete T-beams retrofitted for shear and flexure using carbon fiber reinforced polymers." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6991.

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In 1997, a precast prestressed T-Beam in the Ala Moana Shopping Center Parking Garage was strengthened in flexure using carbon fiber reinforced polymer (CFRP). When the old parking garage was demolished in June 2000 to make way for a new multilevel parking garage, this beam and two control beams were salvaged and transported to the University of Hawaii at Manoa Structural Testing Laboratory for testing. This thesis presents testing of the strengthened beam and a control beam. It also describes the retrofit procedures during field application of the CFRP strips, beam recovery, and preparation f
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7

Boehm, Kurtis McKinley Barnes Robert W. "Structural performance of self-consolidating concrete in AASHTO type I prestressed girders." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Civil_Engineering/Thesis/Boehm_Kurtis_25.pdf.

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8

Karimnassaee, Ali 1959. "FLEXURAL BEHAVIOR OF LIGHTLY REINFORCED UNBONDED POST-TENSIONED CONCRETE BEAMS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275510.

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9

Gopal, Pritiv Kumar. "Flexural behaviour of flanged concrete beams prestressed with unbonded steel or FRP tendons." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ54454.pdf.

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10

ARAUJO, AELLINGTON FREIRE DE. "EXPERIMENTAL STUDY ON THE FLEXURAL STRENGTH OF CONCRETE BEAMS PRESTRESSED WITH SYNTHETIC TENDONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1927@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Nos últimos anos a protensão externa tem sido empregada tanto na recuperação e reforço de estruturas existentes quanto na concepção de novas estruturas. A protensão externa pode ser feita com cabos de aço ou com cabos sintéticos. Dentre esses, podem-se destacar os cabos Parafil, cujo núcleo é constituído de fibras kevlar. Essas fibras têm alta resistência (3700MPa), alto módulo de elasticidade (126000MPa) e excelente resistência à corrosão. Neste trabalho é feito um estudo do comportamento de vigas protendidas com cabos ext
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11

Collins, Travis Collins. "Estimating in-situ flexural strength of heat-affected prestressed concrete beams using constituent material models." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1219953974/.

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12

Celada, Blesa Ulric. "Theoretical and experimental study of the behaviour at service and failure of partially prestressed concrete beams under flexure and shear." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/668253.

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Partially Prestressed Concrete (PPC) is an intermediate design approach between reinforced and totally prestressed concrete, that enables controlled cracks in service phase. Conversely, totally prestressed concrete is design to prevent cracks in service. This design strategy can be useful for structural optimization, as allows for more freedom in the variation of stiffness, crack opening, stress level and resistance. This technique has been studied during the past decades. However, its extensive use has been limited due to the lack of methodologies to control the crack width. This thesis aims
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13

BOLDUC, MATTHEW W. "USE OF CARBON FIBER REINFORCED POLYMER PLATES FOR REPAIR OR RETROFIT OF PRESTRESSED AND REINFORCED CONCRETE GIRDERS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1046870127.

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14

Tan, Chor Suan. "Theoretical analysis of the flexural strength and behaviour of unbonded partially prestressed concrete beams and slabs with and without bonded reinforcement." Thesis, University of Canterbury. Department of Civil Engineering, 1989. http://hdl.handle.net/10092/2450.

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A modified version of the computer program written by Chan (1986) for the analysis of unbonded prestressed concrete members under third point loading was developed. The new program carries out the analysis more quickly and efficiently while still maintaining the required accuracy level. The program was used to analyse twenty-two unbonded beams with bonded steel tested in China and twelve unbonded slabs with bonded steel and a futher six unbonded slabs without bonded steel tested at the University of Canterbury. All analytical and experimental results were compared . The comparison revealed tha
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15

Wang, Zhongsheng. "VIbration behaviour of prestressed concrete beams." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420369.

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16

šSvecová, Dagmar. "Behaviour of concrete beams reinforced withFRP prestressed concrete prisms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/NQ42809.pdf.

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17

Chan, Andrew Kay Ching. "Impact behaviour of model prestressed concrete beams." Thesis, University of Sheffield, 1986. http://etheses.whiterose.ac.uk/3484/.

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This research work investigates the impact behaviour of prestressed concrete beams. A total number of forty 1000 mm long model beams with a rectangular section of 44 x 65 mm were cast. The beams were divided into four with ten beams in each series. Each beam was prestressed by four 1.6 mm diameter piano vire3 and the shear reinforcement va3 varied from series to series. The test rig available was modified so that the beam could have pin-end supports with a span of 600 mm and a static or impact load could be applied at the midspan. A total number of 40 static tests (8 static and 32 post-impact-
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18

IUNES, YVELYNE BIANCA FERREIRA. "OPTIMUM TENDON PROFILES IN PRESTRESSED CONCRETE BEAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1402@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>UNIVERSIDADE FEDERAL DO PARÁ<br>O presente trabalho contém a formulação, implementação e teste de um modelo para determinação do traçado ótimo de cabos de protensão, bem como do valor da força de protensão mínima correspondente, em vigas isotáticas e hiperestáticas. Na formulação, será considerado que o cabo de protensão possui um desenvolvimento segmentado em parábolas do segundo grau, onde o comprimento dessas parábolas serão pré- estabelecidos. Serão feitas ainda simplificações em relação à força de protensão e às perda
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19

Gomez, Nicolas M. Eng Massachusetts Institute of Technology. "Design of prestressed, fabric-formed concrete beams." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111507.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 60-62).<br>Fabric forms and prestressing are both technologies for concrete structures that allow for less material to do more work. This thesis seeks to assess the feasibility and performance of fabric formed, prestressed beams with a keyhole cross-section, while varying parameters such as concrete strength, loading, beam depth, and prestressing force. They are designed for flexure via a sectiona
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20

Cojocaru, Razvan. "Lifting Analysis of Precast Prestressed Concrete Beams." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32464.

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Motivated by Robert Mastâ s original papers on lifting stability, this research study provides a method for predicting beam behavior during lifting, with application in the construction of bridges. A beam lifting cracking limit state is developed based on analytical equations for calculating the roll angle of the beam, the internal forces and moments, the weak-axis and strong-axis deflections, and the cross-sectional angle of twist. Finite element simulations are performed to investigate the behavior of concrete beams during lifting and to validate the proposed method. Additionally, a stat
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21

Svecova, Dagmar Carleton University Dissertation Engineering Civil and Environmental. "Behaviour of concrete beams reinforced with FRP prestressed concrete prisms." Ottawa, 1998.

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22

ALMEIDA, SYLVIA REGINA MESQUITA DE. "OPTIMUM DESIGN OF CABLES IN PRESTRESSED CONCRETE BEAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2001. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2058@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>UNIVERSIDADE FEDERAL DE GOIÁS<br>O objetivo desse trabalho é apresentar uma metodologia para obtenção do traçado ótimo de cabos aderentes em vigas de concreto protendido, levando em consideração a variação das perdas por atrito ao longo dos cabos. Para atingi-lo, a formulação proposta considera os efeitos das perdas por atrito sobre as tensões e estabelece o valor custo mínimo da protensão como objetivo da otimização. As demais perdas de protensão são consideradas constantes ao longo da viga, embora a formulação proposta p
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23

Gurbuz, Mustafa Ispir Barnes Robert W. "Shear strengths of end regions of prestressed self-consolidating concrete beams." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Civil_Engineering/Thesis/Gurbuz_Mustafa_18.pdf.

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24

Tso, Karmen. "Full-range behaviour of concrete beams partially prestressed with unbonded tendons." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38225578.

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25

Levy, Kelly Rebecca. "Bond behavior of prestressed reinforcement in beams constructed with self-consolidating concrete." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/LEVY_KELLY_6.pdf.

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26

Foo, M. H. "Behaviour of partially prestressed concrete structures under fatigue loading /." Title page, table of contents and abstract only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phf686.pdf.

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27

Wight, Raymond Gordon. "Strengthening concrete beams with prestressed fibre reinforced polymer sheets." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/NQ31960.pdf.

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28

唐嘉鴻 and Ka-hung William Tang. "Strain energy capacity of reinforced and prestressed concrete beams." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B30425190.

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29

Jaafar, Mohd Saleh. "Time-dependent analysis of continuous precast prestressed concrete beams." Thesis, University of Sheffield, 1999. http://etheses.whiterose.ac.uk/3465/.

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A literature survey on the subject of construction, analysis and design of precast prestressed concrete beams made continuous has been conducted from which various methods of achieving continuity between the precast units have been identified. A need to re-evaluate the analysis and design of such structures has been established with special emphasis on the time-dependent aspects. An extensive evaluation of the time-dependent properties of concrete and the time- dependent behaviour of reinforced and prestressed concrete structures has been conducted. The evaluation used widely accepted methods
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30

Tang, Ka-hung William. "Strain energy capacity of reinforced and prestressed concrete beams /." [Hong Kong] : University of Hong Kong, 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12925524.

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31

Kesse, Gyamera. "Concrete beams with external prestressed carbon FRP shear reinforcement." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615688.

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32

Tso, Karmen, and 曹嘉雯. "Full-range behaviour of concrete beams partially prestressed with unbonded tendons." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38225578.

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33

Roberts, James Benson Schindler Anton K. "Evaluation of self-consolidating concrete for use in prestressed girder applications." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/ROBERTS_JAMES_43.pdf.

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34

Lee, Hon. "Fatigue behavior of concrete beams prestressed with glass fiber reinforced plastic (GFRP) tendon /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202007%20LEE.

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35

Kavanaugh, Bryan Palmer Schindler Anton K. "Creep behavior of self-consolidating concrete." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SUMMER/Civil_Engineering/Thesis/Kavanaugh_Bryan_38.pdf.

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36

Linkeshwaran, Ponnam Palam. "Time dependent behaviour of statically indeterminate prestressed concrete structures." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/7684.

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37

Whitehead, Paul Arthur. "Shear strength of concrete containing fibre-reinforced-plastic reinforcement." Thesis, University of Bath, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275880.

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38

Swords, Jesse Shane. "Transfer length in prestessed self-consolidating concrete." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/SWORDS_JESSE_8.pdf.

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39

Camino, Trujillo Santiago J. "Analytical Evaluation of Damaged Prestressed Concrete Box Beams Bridge Girders." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282326000.

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40

Kamat, Anuja Ganesh. "Split Concrete Model for Shear Behavior of Concrete Beams." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/193611.

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Split Concrete Model (SCM) is a unified approach towards modeling shear behavior in concrete. SCM is essentially a rational model which is evaluated and modified using a large experimental database.The shear strength of the concrete beam is modeled as the sum of the contribution of concrete, transverse reinforcement, longitudinal reinforcement and bond between concrete and longitudinal reinforcement. Concrete does not contribute to the shear strength after the formation of the crack. In SCM, this is shown to be accurately modeled by only considering the second branch of the critical crack whil
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41

Xu, Jiangong Barnes Robert W. "Nondestructive evaluation of prestressed concrete structures by means of acoustic emissions monitoring." Auburn, Ala, 2008. http://hdl.handle.net/10415/1429.

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42

El-Ariss, Bilal M. "Nonlinear time-dependent analysis of externally/internally prestressed reinforced concrete beams." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq39023.pdf.

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43

Gulistani, Aziz A. "Forensic Investigation of Prestressed Concrete Box Beams from LIC-310 Bridge." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1260381612.

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44

Maruri, Rodolfo Felipe. "Iterative computer analysis of post-tensioned concrete beams and frames." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/19510.

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45

Barnes, Robert Wesley. "Development length of 0.6-inch prestressing strand in standard I-shaped pretensioned concrete beams /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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46

Uduehi, June. "Comparative study of the structural behaviour of prestressed beams of brickwork and concrete and the shear strength of brickwork beams." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/11485.

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47

Salzmann, Angela, and n/a. "Damping Characteristics of Reinforced and Prestressed Normal- and High-Strength Concrete Beams." Griffith University. School of Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040430.133844.

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In the last few decades there has been a significant increase in the design strength and performance of different building materials. In particular, new methods, materials and admixtures for the production of concrete have allowed for strengths as high as 100 MPa to be readily available. In addition, the standard manufactured yield strength of reinforcing steel in Australia has increased from 400 MPa to 500 MPa. A perceived design advantage of higher-strength materials is that structural elements can have longer spans and be more slender than previously possible. An emerging problem with
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48

El-Hacha, Raafat Mohamad Adel. "Prestressed CFRP sheets for strengthening concrete beams at room and low temperatures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ56078.pdf.

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49

Hodges, Hunter Thomas. "Top Strand Effect and Evaluation of Effective Prestress in Prestressed Concrete Beams." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/36300.

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The first objective of this thesis was to assess the effect of casting orientation on bond strength in pretensioned prestressed concrete members. The "top strand effect" was evaluated through transfer and development length tests of prestressed concrete beams. Eight beams were cast with normal orientation, while four beams were cast with inverted orientation so that a significant depth of fresh concrete was placed below prestressing strands. Discrete transfer lengths were determined at the ends of each beam by measuring concrete surface strains. Inverted casting orientation caused an avera
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50

Lemay, Lionel. "Repair of prestressed concrete bridge girders for shear." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65943.

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