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Добірка наукової літератури з теми "Reinforced concrete Plastic properties"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "Reinforced concrete Plastic properties"

1

Anandan, Sivakumar, and Majed Alsubih. "Mechanical Strength Characterization of Plastic Fiber Reinforced Cement Concrete Composites." Applied Sciences 11, no. 2 (January 18, 2021): 852. http://dx.doi.org/10.3390/app11020852.

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The reinforcing efficiency of plastic fibers obtained from shredded plastic waste was tested in plain concrete mixes and experimentally verified in this study. Plastic fibers up to 0.15% Vf were added to the design concrete mix to assess the fiber effectiveness in terms of improved load carrying capability of various plastic fiber incorporated concrete composites. The effects of plastic fibers distributed homogenously in the entire depth of concrete and confined in the tension zone were evaluated in flexural bending properties. Mechanical strength properties were evaluated for two different types of concrete containing (i) plastic fibers added homogenously throughout the entire depth of concrete and (ii) the plastic fibers confined in the tension zone only. Flexural bending parameters such as toughness, residual strength, crack width, post-peak drop load resistance, and fiber performance index of various plastic fiber substituted concrete mixes were tested in compressive and flexural bending to assess the fiber reinforcing efficiency. Test results indicated that the plastic fibers added in tension zone confinement exhibited higher flexural strength (5.26 N/mm2) improvements compared to homogeneously distributed concrete systems. Flexural bending characteristics in terms of absolute toughness and post peak strain softening were found to be appreciably higher (132%) in tension zone confined plastic fiber concretes compared to homogeneous fiber concrete systems.
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Trivedi, V., N. Vadher, V. Panera, K. K. R. Iyer, and M. Mungle. "Effect of plastic strips on elastic properties of concrete under cyclic loading." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (December 19, 2022): 159–64. http://dx.doi.org/10.38208/acp.v1.489.

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Heterogeneous characteristics of concrete with variation in strength of matrix, aggregate and interface causes non-uniform distribution in stress. Reinforcing concrete alters this distribution and can be designed to reduce non-uniformity. Present study investigates applicability of plastic strips as reinforcement to improve performance of concrete. Since plastic strips are strong in tension, they are oriented to control tensile stress generated in concrete. The approach adopted contributed to increment in compressive strength of fibre reinforced concrete. In comparison with conventional concrete, fibre reinforced concrete has higher but delayed compressive strength, lower initial stiffness and higher energy absorption capacity. In order to assess impact of plastic strips on fundamental properties like Young’s modulus and poisons ratio, cylindrical samples with radially oriented plastic strips are subjected to cyclic loading. Poisson’s ratio is computed by measuring axial and lateral deformation in the sample. To compute Young’s modulus, axial deformation is measured along the gauge length. Response of conventional and fibre reinforced concrete is measured for both loading and unloading cycles considered. In comparison with conventional concrete, fibre reinforced concrete reflects higher axial deformation but the lateral deformation is restrained. This contributes to lower Poisson’s ratio for fibre reinforced concrete. Reduction in lateral deformation of fibre reinforced concrete is an effect of confinement generated by plastic strips. The presence of confinement effect reduces net stress acting at a material point thus increasing compression capacity of concrete. Further, Young’s modulus of fibre reinforced concrete decreases in comparison with conventional concrete. This is due to softening effect of plastic strips in axial direction. However, progressive increment in loading causes substantial degradation in young’s modulus of conventional concrete whereas for fibre reinforced concrete it remains largely stable. Similar stability in also response is reported for poisons ratio. The present study thus establishes role of plastic strips in developing confinement effect contributing to improved performance and predictability in response of strength and material parameters namely Young’s modulus and poisons ratio.
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Xing, Feng, Fa Guang Leng, and Wei Wen Li. "Properties of Cracking Resistance of Cemfiber Reinforced Concrete." Key Engineering Materials 280-283 (February 2007): 1765–70. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1765.

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Polypropylene fiber is a new measure to prevent plastic cracks of concrete. Effects of the parameters, such as dosage and types of fibers, on the plastic cracks were studied systematically. The properties of cracking resistance of mortar, ordinary concrete and high performance concrete were investigated by using samples of two types in shape. The results show that: (1) polypropylene fibers may increase the cracking resistance of concrete further; (2) as smaller quantity of cement and higher quantity of aggregate as possible should be used to prevent concrete form cracking; (3) the main reason why polypropylene fibers increase cracking resistance of concrete is that they increase strain capacity of concrete at early age, decrease shrinkage strain, improve plastic tensile strength and decrease tensile stress of the capillary.
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Niu, Jian Gang, Bin Wu, and Jian Bao. "Experimental Study on the Flexural Impact Properties of Fiber Reinforced Lightweight Aggregate Concrete." Applied Mechanics and Materials 488-489 (January 2014): 696–99. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.696.

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Through experimental study on the flexural impact properties of different dosage of plastic-steel fiber and steel fiber reinforced lightweight aggregate concrete, the results show that energy dissipation of cracking and damaging of steel fiber reinforced lightweight aggregate concrete increase with the increase of fiber ratio. However, energy dissipation of cracking and damaging of plastic-steel fiber concrete increases in early stage and decreases later with the increase of plastic-steel fibers. Enhancement effect of energy dissipation of damaging of plastic-steel fiber is higher than steel fibers.
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K. Askar, Mand. "Mechanical Properties of Concrete Reinforced with Alternative Fibers." Journal of Duhok University 23, no. 1 (September 14, 2020): 149–58. http://dx.doi.org/10.26682/csjuod.2020.23.1.16.

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The aim of this study is to investigate the capability to use alternative fibers and their effectiveness in improving the mechanical properties of concrete. Alternative fibers made of cut stainless steel rebar tie wire (RTW) and shredded west plastic bottles, polyethylene terephthalate (PET) has been used. The reason behind choosing these materials is the low cost and availability of them, as well as because nowadays the whole world is facing environment pollution problems, where many things which are invented for our life are responsible for polluting the environment due to improper waste management. In total, 135 concrete specimens were produced in two stages and subsequently tested; in the first stage of specimen production, steel (RTW) fibers with volume fractions of 1% and 2% were added to M40 concrete mixture, and in the second stage, plastic (PET) fibers with volume fractions of 0.5% and 0.75% were added to M40 concrete mixture. The results indicate that both alternative fibers used have considerable effects on the mechanical properties of concrete, where the mechanical properties were improved at the different percentages used. In general, the use of alternative steel (RTW) fibers and plastic (PET) fibers show a significant enhancement of concrete mechanical properties.
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Hadj Mostefa, Adda, and Merdaci Slimane. "Study of Concretes Reinforced by Plastic Fibers Based on Local Materials." International Journal of Engineering Research in Africa 42 (April 2019): 100–108. http://dx.doi.org/10.4028/www.scientific.net/jera.42.100.

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This work is carried out to investigate the performance of concrete reinforced with plastic fibers obtained locally (bottle waste as fiber). Bottle waste plastic was chosen because it is being thrown after single use and cause environmental problem. One way to recycle wasted bottles plastic is grinded into irregular fiber. Then, it was incorporate with the concrete and tests the performance of the concrete. The study was conducted using cylindrical and rectangular (cube) mold of concrete to investigate the performance of the concrete in term of mechanical properties. In this research, the mechanical properties that were measured are compressive strength, splitting tensile strength and flexural strength. The results revealed that the presence of plastic fiber in concrete will increase the concrete performance, as well as the concrete bond strength is improved and the cracks in the concrete decrease the use of fibers and reduce plastic waste.
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Zhou, Jian, Hai Ning Liu, Su Ma, Jing Jing Li, and He Tao Hou. "Bond Properties of Ceramic Concrete Reinforced by Bamboo Bar." Applied Mechanics and Materials 477-478 (December 2013): 920–25. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.920.

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Bond properties of ceramic concrete reinforced by bamboo bar were investigated based on pull-out tests. The influences of strength grade of ceramic concrete, material type, bond length, side length and notch spacing of bamboo bar on the bond strength between the bamboo bars and ceramic concrete were studied. The results show that the bond failure mode of ceramic concrete reinforced by bamboo bar without notch is majorly pulling-out failure, however, ceramic concrete reinforced by restructured bamboo (RB) bar with notch appears shear failure mode. The ultimate bond strength of ceramic concrete reinforced by RB bars is higher than that of ceramic concrete reinforced by laminated bamboo (LB) bar, which is close to that of ceramic concrete reinforced by plastic bars,but lower than that of ceramic concrete reinforced by steel bars under the same condition. When the notch spacing is 15 mm, the bond strength of ceramic concrete reinforced by RB bars is the highest. The conclusions can be usable for the the constitutive relationship of ceramic bamboo-reinforced concrete.
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Scarpitti, Nicholas, Nicholas Gavio, Alexander Pol, and Seyed Hamid Reza Sanei. "Recycling Unrecycled Plastic and Composite Wastes as Concrete Reinforcement." Journal of Composites Science 7, no. 1 (January 5, 2023): 11. http://dx.doi.org/10.3390/jcs7010011.

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The land disposal of waste material is a major environmental threat, and recycling efforts must be exponentially improved to mitigate it. In this paper, a feasibility study was conducted to reinforce concrete with waste materials that are not typically recycled. Compression testing was performed to evaluate the mechanical properties of the concrete specimens. The results were compared with a conventional wire mesh reinforcement used in concrete. Alternative reinforcements that are typically disposed of in landfill were used, namely, plastic regrind, carbon fiber scraps, tempered glass, coarse aggregates, and wire mesh. For each reinforcement type, four specimens were manufactured to evaluate the consistency of the results. Cylindrical specimens with ASME standard dimensions of 10.16 cm × 20.32 cm were tested using a Tinius-Olsen compression testing machine after seven days of curing. A constant strain rate of 0.25 MPa/s was applied until a load drop of 30% was detected. The results show that, while the recycled reinforcements had lower compressive strengths than the wire mesh, they maintained a load-carrying capacity of more than 80%. A major improvement was observed in terms of the ductility and toughness of the reinforced concretes. The recycled-carbon-fiber-reinforced specimens showed 12% strain at failure, a major improvement in concrete ductility. The findings of this research indicate that such recycled particles and fibers without any post-processing can be used in the reinforcement of concrete, with a significant improvement in ductility.
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Lu, Chenxuan, Yongcheng Ji, Yunfei Zou, Jieying Zhou, Yuqian Tian, and Zhiqiang Xing. "Mechanical Properties on Various FRP-Reinforced Concrete in Cold Regions." Buildings 13, no. 1 (January 5, 2023): 138. http://dx.doi.org/10.3390/buildings13010138.

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The evaluation of frost resistance varies with different reinforcement methods, but it is a hot research topic for concrete reinforced with Fiber-Reinforced plastic (FRP). Freezing and thawing tests of FRP-reinforced concrete prisms and cylinders are presented to simulate beams and piers of buildings in cold climates. To evaluate the specimens’ frost resistance, tests with various reinforcement techniques, morphological analysis, weight tests, and relative dynamic modulus of elasticity tests were used. Examined also were the variations in stress–strain curves for axial compression tests and load–displacement curves for bending tests following various freeze–thaw cycles. The findings indicated that after 100 freeze–thaw cycles, the weight of unreinforced concrete cylinders decreased by 9.7%, and its compressive strength decreased by 27.6%. On the other hand, CFRP-reinforced concrete cylinders (Carbon-Fiber-Reinforced Plastics) and GFRP (Glass-Fiber-Reinforced Plastics) gained 1.1% and 1.58% in weight, respectively, while the compressive strength decreased by 7.4% and 8%. After 100 freeze–thaw cycles, the weights of concrete prisms with reinforcement, without reinforcement, and with CFRP reinforcement decreased by 12.13%, 8.7%, and 9.6%, respectively, and their bending strength was reduced by 20%, 42%, and 53%, respectively. The frost resistance of the two FRP-reinforced concrete types had significant differences under freeze–thaw cycles because the prismatic specimens were not fully wrapped with FRP materials. Finally, finite element software ABAQUS was used to simulate the freeze–thaw cycle test of the two specimens. Calculated values were compared to experimental results for the load–displacement curve and the axial stress–strain curve under bending load. The comparison of peak displacement produced a maximum error of 8.6%, and the FRP-reinforced concrete model validity was verified.
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Yang, In-Hwan. "The Mechanical Properties of Recycled Plastic Fiber-Reinforced Concrete." Journal of the Korean Recycled Construction Resources Institute 2, no. 3 (September 30, 2014): 225–32. http://dx.doi.org/10.14190/jrcr.2014.2.3.225.

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Дисертації з теми "Reinforced concrete Plastic properties"

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Alameddine, Fadel 1964. "FLEXURAL STIFFNESS OF CIRCULAR REINFORCED CONCRETE COLUMNS (SLENDERNESS, ACI CODE, LOAD, DESIGN)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276368.

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Abdulmajid, Amin Ali Ahmed. "Strengthening of reinforced concrete beams using carbon fibre reinforced plastic." Thesis, Heriot-Watt University, 2007. http://hdl.handle.net/10399/1998.

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Thomas, Jeff Scott. "Plastic fiber rolling for concrete reinforcement." Diss., Rolla, Mo. : University of Missouri-Rolla, 1996. http://scholarsmine.mst.edu/thesis/pdf/Thomas_09007dcc805b0f25.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 1996.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 24, 2008) Includes bibliographical references (p. 117-118).
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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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Malek, Amir Masoud 1959. "Analytical study of reinforced concrete beams strengthened with fiber reinforced plastic plates (fabrics)." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282316.

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Epoxy-bonding a composite plate to tension face, is an effective technique for repair and retrofit of reinforced concrete beams. Experiments have indicated local failure of the concrete layer between the plate and longitudinal reinforcement in retrofitted beams. This mode of failure is caused by local stress concentrations at the plate end, as well as at the flexural cracks. A method has been presented for calculating shear and normal stress concentrations at the cut-off point of the plate. Stress concentrations predicted by this method have been compared to both finite element method and experimental results. The analytical models provide closed form solutions for calculating stresses at the plate ends and can easily be incorporated in design equations. The ultimate capacity of the reinforced concrete beams strengthened by composite plates bonded to the tension face, is controlled by either compression crushing of concrete, rupture of the plate, local failure of concrete at the plate end, or debonding of the plate. These failure modes have been considered in developing design guidelines for flexural strengthening of reinforced concrete beams using fiber composite plates. Bonding composite plates (fabrics) to the web of reinforced concrete beams can increase the shear and flexural capacity of the beam. An analytical model has been developed to calculate the stress distribution in the strengthened beam, and the shear force resisted by the composite plate before cracking and also after formation of flexural cracks. Parametric study has been performed to reveal the effect of important parameters such as fiber orientation, and plate thickness. The ultimate shear capacity of reinforced concrete beams is also increased by epoxy-bonding composite plates to the side faces of the beam. Truss analogy and compression field theory have been used to determine the effect of the composite plate on the crack inclination angle and the shear capacity of reinforced concrete beams at ultimate state. The effects of important parameters such as plate thickness and fiber orientation angle on the crack inclination angle and the shear capacity of the strengthened beam have been investigated through a parametric study.
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Branch, James. "Plastic properties of fresh high strength concrete." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/842953/.

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This thesis describes the novel test techniques that were developed to measure the parameters associated with the plastic shrinkage, and subsequent possible plastic shrinkage cracking, of high strength concrete. The parameters measured during the first 24 hours after placing were the stress- strain relationship, negative pore pressure and free shrinkage strain development. The plastic behaviour of eight high strength concrete mixes was quantified and these mixes were then tested to assess their propensity towards plastic shrinkage cracking, using restrained ring tests. A review of the parameters associated with plastic shrinkage cracking was carried out. The general view was that as the particle size in a cement matrix gets smaller, then the negative pore pressures developed are greater and hence shrinkage increases. This meant that the presence of secondary cementing materials, of very small diameter, such as microsilica, in high strength concretes would explain their apparent susceptibility to plastic shrinkage cracking. Eight high strength concrete mixes were tested in exposed and sealed conditions. It was found that when tested in sealed conditions none of the parameters measured presented itself as the sole driving force behind plastic shrinkage or plastic shrinkage cracking. Also, when cured in sealed conditions, none of the mixes tested in the restrained ring test apparatus cracked. When tested in exposed conditions, the presence of wind had little effect on the stress-strain relationship of the mixes tested. However the presence of wind seemed to cause negative pore pressures to develop earlier than in the sealed samples and increased free shrinkage by 3 to 40 times depending on the mix. The samples that exhibited the highest free shrinkage strains, in exposed conditions, were the mixes that cracked when tested in the restrained shrinkage rings. The mixes that cracked all contained microsilica and these mixes did not crack when the same mixes were tested without microsilica. Polypropylene fibres were found to reduce the cracked area of the samples that cracked. The supplementary cementing materials used in this study were ground granulated blast furnace slag, metakaolin, microsilica and pulverised fuel ash.
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Soong, Wai How. "Bonding between the concrete and Fiber Reinforced Plastic, FRP, rods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62851.pdf.

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Tao, Shicheng. "Bond of glass-fiber-reinforced-plastic reinforcing bars to concrete." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/186823.

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The objective of this research project was to study the bond behavior of Glass-Fiber-Reinforced-Plastic (GFRP) reinforcing bars (rebars) to concrete. A total of 102 specimens were experimentally investigated and theoretically analyzed at The University of Arizona. The static tensile load was applied to the rebars in a gradual increment of load level until splitting of concrete, rebar pull out failure, or rebar fracture occurred. The slip between the rebars and concrete was measured at the loaded and free ends at each load level. Variables included in the specimens were concrete compressive strength, embedment length, clear concrete cover, rebar diameter, concrete cast depth, radius of bend, tail length, and lead embedment length. On the basis of the experimental results, the study showed that concrete compressive strength, embedment length, clear concrete cover, concrete cast depth, and radius of bend had significant effects on bond of GFRP rebars to concrete. New criteria for acceptable bond performance of GFRP rebars to concrete were established. Furthermore, the practical design guidelines for calculating the development lengths of straight and hooked GFRP rebars to concrete were determined. In addition, confinement factors were also derived to reflect the influence of concrete cover and casting position.
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Ball, Ryan. "Experimental analysis of composite reinforced concrete beams." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1177002341.

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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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Книги з теми "Reinforced concrete Plastic properties"

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Plasticity in reinforced concrete. Ft. Lauderdale, FL: J. Ross Pub., 2007.

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2

Dhakal, Rajesh P. Curvature ductility of reinforced concrete plastic hinges: Assessment of curvature limits for different forms of plastic hinges in reinforced concrete structures. Saarbrücken: VDM, Verlag Dr. Müller, 2008.

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Dhakal, Rajesh P. Curvature ductility of reinforced concrete plastic hinges: Assessment of curvature limits for different forms of plastic hinges in reinforced concrete structures. Saarbrücken: VDM, Verlag Dr. Müller, 2008.

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4

1971-, Hoang Linh, ed. Limit analysis and concrete plasticity. 3rd ed. Boca Raton: Taylor & Francis, 2010.

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5

Limit analysis and concrete plasticity. 2nd ed. Boca Raton: CRC Press, 1999.

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6

Jacky, Mazars, and Millard Alain, eds. Dynamic behavior of concrete and seismic engineering. London, UK: ISTE ; Hoboken, NJ : Wiley, 2009.

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7

Handbook of fiber-reinforced concrete: Principles properties, developments and applications. Park Ridge, N.J., U.S.A: Noyes Publications, 1990.

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H, Bungey J., and Hulse Ray, eds. Reinforced concrete design to Eurocode 2. Houndmills, Basingstoke, Hampshire: Palgrave MacMillan, 2007.

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9

Modern concrete construction manual: Structural design, material properties, sustainability. München: Institut für internationale Architektur-Dokumentation, 2014.

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10

Balavadze, V. K. Novoe o prochnosti i deformativnosti betona i zhelezobetona. Tbilisi: "Met͡s︡niereba", 1986.

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Частини книг з теми "Reinforced concrete Plastic properties"

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Yin, Shi. "Production and Characterisation of the Physical and Mechanical Properties of Recycled PP Fibers." In Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete, 51–68. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3719-1_3.

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Sai Neeraja, V., and Vaibhav Sharma. "Experimental Investigation on Fresh Properties and Optimization of Self-Compacting Concrete Reinforced with Waste Plastic." In Lecture Notes in Civil Engineering, 297–308. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4731-5_28.

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Mosley, W. H., J. H. Bungey, and R. Hulse. "Properties of reinforced concrete." In Reinforced Concrete Design, 1–13. London: Macmillan Education UK, 1999. http://dx.doi.org/10.1007/978-1-349-14911-7_1.

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Mosley, W. H., and J. H. Bungey. "Properties of Reinforced Concrete." In Reinforced Concrete Design, 1–14. London: Macmillan Education UK, 1990. http://dx.doi.org/10.1007/978-1-349-20929-3_1.

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Mosley, W. H., and J. H. Bungey. "Properties of Reinforced Concrete." In Reinforced Concrete Design, 1–14. London: Macmillan Education UK, 1987. http://dx.doi.org/10.1007/978-1-349-18825-3_1.

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Mosley, W. H., and J. H. Bungey. "Properties of Reinforced Concrete." In Reinforced Concrete Design, 1–14. London: Macmillan Education UK, 1990. http://dx.doi.org/10.1007/978-1-349-13058-0_1.

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Mosley, W. H., R. Hulse, and J. H. Bungey. "Properties of Reinforced Concrete." In Reinforced Concrete Design to Eurocode 2 (EC2), 1–17. London: Macmillan Education UK, 1996. http://dx.doi.org/10.1007/978-1-349-13413-7_1.

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Kong, F. K., and R. H. Evans. "Properties of structural concrete." In Reinforced and Prestressed Concrete, 18–67. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4899-7134-0_2.

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Aschheim, Mark, Enrique Hernández-Montes, and Dimitrios Vamvatsikos. "Plastic mechanism analysis." In Design of Reinforced Concrete Buildings for Seismic Performance, 203–17. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T& F Informa, plc, [2019] |: CRC Press, 2019. http://dx.doi.org/10.1201/b19964-11.

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Ferrara, Liberato. "Fiber Reinforced SCC." In Mechanical Properties of Self-Compacting Concrete, 161–219. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03245-0_6.

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Тези доповідей конференцій з теми "Reinforced concrete Plastic properties"

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"Properties of Fiber Reinforced Plastic Rods for Prestressing Tendons." In SP-138: Fiber-Reinforced-Plastic Reinforcement for Concrete Structures - International Symposium. American Concrete Institute, 1993. http://dx.doi.org/10.14359/3859.

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"Fundamental Properties of Continuous Fiber Bars." In SP-138: Fiber-Reinforced-Plastic Reinforcement for Concrete Structures - International Symposium. American Concrete Institute, 1993. http://dx.doi.org/10.14359/3952.

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"Properties of Hollow Concrete Masonry Reinforced With Fiber Glass Composite." In SP-138: Fiber-Reinforced-Plastic Reinforcement for Concrete Structures - International Symposium. American Concrete Institute, 1993. http://dx.doi.org/10.14359/3934.

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"Mechanical Properties of Composite Beams by FRP." In SP-138: Fiber-Reinforced-Plastic Reinforcement for Concrete Structures - International Symposium. American Concrete Institute, 1993. http://dx.doi.org/10.14359/3922.

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"Shear and Flexure Behavior of Reinforced Polymer Concrete Made with Recycled Plastic Wastes." In SP-166: Properties and Uses of Polymers in Concrete. American Concrete Institute, 1996. http://dx.doi.org/10.14359/1479.

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"Effect of Low Addition Rates of Polypropylene Fibers on Plastic Shrinkage Cracking and Mechanical Properties of Concrete." In SP-142: Fiber Reinforced Concrete Developments and Innovations. American Concrete Institute, 1994. http://dx.doi.org/10.14359/1179.

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Murugan, Anandkumar, Suriya Mani, and Ravichandran Ponnusamy. "Study on mechanical properties of fibre reinforced concrete incorporating plastic waste as fine aggregate." In 3RD NATIONAL CONFERENCE ON CURRENT AND EMERGING PROCESS TECHNOLOGIES – CONCEPT 2020. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0011066.

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"Properties of Fiber Reinforced Plastics at Elevated Temperatures with Regard to Fire Resistance of Reinforced Concrete Members." In SP-188: 4th Intl Symposium - Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures. American Concrete Institute, 1999. http://dx.doi.org/10.14359/5612.

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Mobasher, Barzin, Yiming Yao, Aashay Arora, and Narayanan Neithalath. "Ultra high Performance Concrete - Materials Formulations and Serviceability based Design." In HAC2018 - V Congreso Iberoamericano de Hormigón Autocompactable y Hormigones Especiales. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/hac2018.2018.8263.

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Materials and mechanical design procedures for ultra-high performance cement composites (UHPC) members based on analytical models are addressed. A procedure for the design of blended components of UHPC is proposed using quaternary cementitious materials. The blending procedures are used using a packing and rheology optimization approach to blend high performance mixtures using non-proprietary formulations. Closed-form solutions of moment-curvature responses of UHPC are derived based on elastic-plastic compressive model and trilinear strain hardening tension stress strain responses. Tension stiffening behavior of UHPC due to fiber toughening and distributed cracking is then incorporated in the cross-sectional analysis. Load-deflection responses for beam members are obtained using moment-area, and direct integration approach. The proposed models provide insights in the design of SHCC to utilize the hardening properties after cracking. Using proper parameters, generalized materials model developed are applicable to both SHCC and strain softening cement composites such as steel fiber reinforced concrete (SFRC), textile reinforced concrete (TRC) and ultra-high performance concrete (UHPC).DOI: http://dx.doi.org/10.4995/HAC2018.2018.8263
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Ibraheem, Anas Akram. "AMS: A New Software for Structural Analysis, Modeling, and Design with BIM Support." In IV Международная научно-практическая конференция «BIM-моделирование в задачах строительства и архитектуры». СПбГАСУ, 2021. http://dx.doi.org/10.23968/bimac.2021.034.

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This paper contains information about AMS, a new software package developed by the author. The program performs three-dimensional structural analysis, modeling, and design. It is based on the finite element method (FEM) in terms of carrying out static, dynamic and seismic analysis. AMS has a graphical environment (plan view, elevation view, 3D view). It also supports BIM. AMS can import IFC files, store them in structural data as elements and materials, and load them with full characteristics defined. It also can import DXF files. AMS contains many drawing utilities (grid system, object snap tools, elements’ extrusion and duplication tools, graphical elements’ drawing tools). The program allows the user to define various sections of frame and surface elements. In addition, its capacities include the definition of construction materials (concrete and steel) as well as their linear and non-linear properties. The program menus support both Russian and English languages. At the present stage, the analysis and design in the program are limited to only the frame (beams, columns) made out of rectangular-section reinforced concrete elements. The surface elements (slabs, walls) can be drawn within the model but they are ignored in analysis, and their functions are limited to transferring loads only. The program allows for static elastic linear analysis. It also provides a schematic representation of the structure’s capacity curve (force-displacement), using static elastic-plastic analysis.
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Звіти організацій з теми "Reinforced concrete Plastic properties"

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Zhou, Zhulin. The High-Frequency Dielectric Properties of Glass Fibre Reinforced Plastic and Honeycomb Layers. Fort Belvoir, VA: Defense Technical Information Center, June 1989. http://dx.doi.org/10.21236/ada210581.

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Mackiewicz, James F., and Gary Proulx. Effect of Fiber-Reinforced Plastic Strength Properties on the Ballistic Performance of Ceramic Composite Armor. Fort Belvoir, VA: Defense Technical Information Center, November 1998. http://dx.doi.org/10.21236/ada415841.

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Roesler, Jeffery, Sachindra Dahal, Dan Zollinger, and W. Jason Weiss. Summary Findings of Re-engineered Continuously Reinforced Concrete Pavement: Volume 1. Illinois Center for Transportation, May 2021. http://dx.doi.org/10.36501/0197-9191/21-011.

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This research project conducted laboratory testing on the design and impact of internal curing on concrete paving mixtures with supplementary cementitious materials and evaluated field test sections for the performance of crack properties and CRCP structure under environmental and FWD loading. Three experimental CRCP sections on Illinois Route 390 near Itasca, IL and two continuously reinforced concrete beams at UIUC ATREL test facilities were constructed and monitored. Erodibility testing was performed on foundation materials to determine the likelihood of certain combinations of materials as suitable base/subbase layers. A new post-tensioning system for CRCP was also evaluated for increased performance and cost-effectiveness. This report volume summarizes the three year research effort evaluating design, material, and construction features that have the potential for reducing the initial cost of CRCP without compromising its long-term performance.
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Long, Wendy, Kirk Walker, and Brian Green. Interim report on the investigation of the fresh properties of synthetic fiber-reinforced concrete for the Richardson Landing casting field. Geotechnical and Structures Laboratory (U.S.), April 2017. http://dx.doi.org/10.21079/11681/21663.

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Scott, Dylan, Robert Moser, Zackery McClelland, Sarah Williams, Brett Williams, Wendy Long, Brian Green, Kirk Walker, Christopher Downey, and Alexander Tillotson. Interim report on the investigation of the fresh properties of synthetic fiber-reinforced concrete for the Richardson Landing casting field. Engineer Research and Development Center (U.S.), March 2019. http://dx.doi.org/10.21079/11681/32405.

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Ragalwar, Ketan, William Heard, Brett Williams, Dhanendra Kumar, and Ravi Ranade. On enhancing the mechanical behavior of ultra-high performance concrete through multi-scale fiber reinforcement. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41940.

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Steel fibers are typically used in ultra-high performance concretes (UHPC) to impart flexural ductility and increase fracture toughness. However, the mechanical properties of the steel fibers are underutilized in UHPC, as evidenced by the fact that most of the steel fibers pull out of a UHPC matrix largely undamaged during tensile or flexural tests. This research aims to improve the bond between steel fibers and a UHPC matrix by using steel wool. The underlying mechanism for fiber-matrix bond improvement is the reinforcement of the matrix tunnel, surrounding the steel fibers, by steel wool. Single fiber pullout tests were performed to quantify the effect of steel wool content in UHPC on the fiber-matrix bond. Microscopic observations of pulled-out fibers were used to investigate the fiber-matrix interface. Compared to the control UHPC mixture with no steel wool, significant improvement in the flexural behavior was observed in the UHPC mixtures with steel wool. Thus, the addition of steel wool in steel fiber-reinforced UHPC provides multi-scale reinforcement that leads to significant improvement in fiber-matrix bond and mechanical properties of UHPC.
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Gombeda, Matthew, Estevan Rivera, and Zoe Lallas. Optimal Approach for Addressing Reinforcement Corrosion for Concrete Bridge Decks in Illinois. Illinois Center for Transportation, April 2022. http://dx.doi.org/10.36501/0197-9191/22-005.

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This report presents the results of a comprehensive literature review focusing on corrosion performance of reinforced concrete bridge decks, with a particular emphasis on the relative performance of alternative corrosion-resistant reinforcement types. Examples of alternative corrosion-protection options examined herein include epoxy-coated, galvanized, stainless-steel, and A1035 bars, considering conventional black reinforcing bars as the standard. Based upon the results of the literature review, a framework for determining the optimal reinforcement option for a bridge deck is presented as a function of the properties of each reinforcement type and other factors, such as design service life, location of the bridge, estimated maintenance/repair cycles, and relative costs. Several examples are also provided to demonstrate the procedure for using the framework and its applicability for different bridge types with varying design considerations, such as a congested urban artery and a rural interstate. The literature review findings and the optimal approach framework were crafted for use by bridge design engineers as preliminary guidance when determining the type of reinforcement for a given bridge deck and its corresponding conditions. Furthermore, the approach can also be used by Illinois Department of Transportation officials when deciding whether to invest in higher performing corrosion-protection systems for a given application or for updating current bridge design policies to reflect the latest developments in alternative corrosion-resistant reinforcement options.
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Groeneveld, Andrew B., Stephanie G. Wood, and Edgardo Ruiz. Estimating Bridge Reliability by Using Bayesian Networks. Engineer Research and Development Center (U.S.), February 2021. http://dx.doi.org/10.21079/11681/39601.

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As part of an inspection, bridge inspectors assign condition ratings to the main components of a bridge’s structural system and identify any defects that they observe. Condition ratings are necessarily somewhat subjective, as they are influenced by the experience of the inspectors. In the current work, procedures were developed for making inferences on the reliability of reinforced concrete girders with defects at both the cross section and the girder level. The Bayesian network (BN) tools constructed in this work use simple structural m echanics to model the capacity of girders. By using expert elicitation, defects observed during inspection are correlated with underlying deterioration mechanisms. By linking these deterioration mechanisms with reductions in mechanical properties, inferences on the reliability of a bridge can be made based on visual observation of defects. With more development, this BN tool can be used to compare conditions of bridges relative to one another and aid in the prioritization of repairs. However, an extensive survey of bridges affected by deterioration mechanisms is needed to confidently establish valid relationships between deterioration severity and mechanical properties.
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Breland, Benjamin, Janet Simms, William Doll, Jason Greenwood, and Ronald Kaufman. Waterborne geophysical investigation to assess condition of grouted foundation : Old River Control Complex – Low Sill Structure, Concordia Parish, Louisiana. Engineer Research and Development Center (U.S.), May 2022. http://dx.doi.org/10.21079/11681/44183.

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The Old River Low Sill Structure (ORLSS) at the Old River Control Complex (ORCC) in Concordia Parish, LA, is a steel pile-founded, gated reinforced-concrete structure that regulates the flow of water into the Atchafalaya River to prevent an avulsion between the Mississippi River and the Atchafalaya River. A scour hole that formed on the southeast wall of ORLSS during the Mississippi River flood of 1973 was remediated with riprap placement and varied mixtures of self-leveling, highly pumpable grout. Non-invasive waterborne geophysical surveys were used to evaluate the distribution and condition of the grout within the remediated scour area. Highly conductive areas were identified from the surveys that were interpreted to consist mostly of grout. Resistive responses, likely representing mostly riprap and/or sediment, were encountered near the remediated scour area periphery. A complex mixture of materials in the remediated scour area is interpreted by the more gradual transitions in the geophysical response. Survey measurements immediately beneath ORLSS were impeded by the abundance of steel along with the structure itself. The survey results and interpretation provide a better understanding of the subsurface properties of ORLSS.
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EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND OPTIMIZATION OF CHOPPED BASALT FIBER REINFORCED CONCRETE. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.251.

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This paper investigated the influence of CBF damage mode of matrix concrete and the strength of matrix concrete under different stress states. The length of basalt fiber is 6 mm. Three basic mechanical properties tests were conducted with five fiber volume admixtures of 0.00%, 0.05%, 0.10%, 0.15% and 0.20% used as the variables. A total of 90 specimens of different sizes were prepared to study the variation rules of compressive strength, splitting tensile strength and flexural strength at different ages of 7d and 28d, the strengthening mechanism of the reinforcing effect of CBF was also analyzed, and the optimal volume fraction of CBFs was obtained. The results can be concluded that (1) the disordered distribution and uniform dispersion of CBF improve the damage morphology of concrete matrix, reflecting a good effect in the enhancing and crack-resisting; (2)The compressive strength and flexural strength increase first and then decrease with increasing of the fiber incorporation amount, and the BFRC reach their strength peak points when the fiber volume ratio is equal to 0.10%; (3) The dispersion of tensile strengths are relatively high, but they still show a trend of slow increasing trend.
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