Journal articles: 'Reinforced concrete construction'

1

Lin, Yue Zhong. "On the Load of Reinforced Concrete Column by Seawater Corrosion." Advanced Materials Research 368-373 (October 2011): 975–78. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.975.

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The reinforced concrete construction of port, wharf, inshore platform etc, which expose in the bad environment, can suffer influence of the corrosion and lower its safety. Particularly with the seawater corrosion, the reinforced concrete construction will suffer to break easily and result a bigness of loss. Therefore, the construction's safe and dependable increasingly become the important problem that study by people. The paper tested the load about 15 experiment columns of reinforced concrete, which are eroded in the artificial seawater corrosion, studied the load changing of reinforced concrete column which in different times of suffering decay. It afforded the basis for analysis the load of reinforced concrete construction in the corrosion environment.

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Deaconu, O., and GC Chiţonu. "Using fibers in construction." IOP Conference Series: Materials Science and Engineering 1242, no. 1 (April 1, 2022): 012013. http://dx.doi.org/10.1088/1757-899x/1242/1/012013.

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Abstract This article is an overview about alternative solutions for reinforced concrete by using different types of fibers. The use of fiber reinforced concrete when is compared to the conventional reinforced concrete solutions. This study has taken in consideration structural performance and the total cost. The use of fibers or dispersed reinforcement also improves some of the characteristics of concrete, such as those related to: cracking, freezing, durability, erosion of ordinary or marine water, wind erosion, permeability, etc. In order to correct to a large extent, the unfavorable characteristics of the reinforced concrete, in the mass of the fresh concrete various types of fibers can be mixed and incorporated in the use of concrete with dispersed reinforcement. As materials often used as fibers, the most commonly are: hooked-end steel (steel fibers), straight polypropylene and straight polyolefin, glass fiber, carbon fiber, aramid fiber, natural hemp fibers, jute, hair, straw, etc.

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Gu, Chun Ping, Wei Sun, Li Ping Guo, and Qian Nan Wang. "Ultrahigh Performance Concrete: A Potential Material for Sustainable Marine Construction in View of the Service Life." Applied Mechanics and Materials 438-439 (October 2013): 108–12. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.108.

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Ultrahigh performance concretes (UHPC) are promising materials for the next generation infrastructures due to their superior mechanical properties and durability. In this paper, comparison studies were conducted to show the potential of UHPC for sustainable constructions in chloride environments in view of service life. For reinforced concrete, the service life was calculated with analytical solution of Ficks second law on diffusion. And for reinforced concrete with nonlinear initial chloride profiles and depth-dependent chloride diffusion coefficient, a numerical method based on the Crank-Nicholson numerical scheme was adopted to predict the service life. The results show that the reinforced concrete structures constructed and repaired with UHPC have much longer service life than that of normal concrete (NC) and high performance concrete (HPC). It hence needs less cost for maintenance and reconstruction, which fulfills the requirements of sustainable construction.

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Schmeckpeper, Edwin R., and Charles H. Goodspeed. "Fiber-Reinforced Plastic Grid for Reinforced Concrete Construction." Journal of Composite Materials 28, no. 14 (August 1994): 1288–304. http://dx.doi.org/10.1177/002199839402801401.

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Kurpińska, Marzena, Beata Grzyl, and Adam Kristowski. "A Study on Fibre-Reinforced Concrete Elements Properties Based on the Case of Habitat Modules in the Underwater Sills." Polish Maritime Research 27, no. 1 (March 1, 2020): 143–51. http://dx.doi.org/10.2478/pomr-2020-0015.

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AbstractHydrotechnical constructions are mostly objects functioning in extreme conditions and requiring a custom-made construction project. In the case of using prefabricated elements, it is required to develop production, transport, assembly, conservation and repair technology. Concerning the problem of concrete cracks, modern repair systems allow positive effects to be achieved in many cases of concrete elements repair. In this work an attempt has been made to assess the properties of concrete, situated in the Baltic Sea environment, in which traditional rebar was partly replaced by dispersed fibre-phase. Fibre-reinforced concrete belongs to the group of composite materials. The presence of fibres helps to increase the tensile strength, flexural strength and resilience and also prevents the appearance of cracks. In the given paper we will also discuss basic parameters of steel and polymer fibres and the influence of both types of fibres on the maturing and hardened concrete. In this work special attention has been paid to the advantages of polypropylene and polymer fibres with regard to commonly-known steel fibres. The use of synthetic fibres will be advantageous in constructions where the reduction of shrinkage cracks and high resilience are essential. On top of that, the use of synthetic fibres is highly recommended when constructing objects that will be exposed to the impact of an aggressive environment. Undoubtedly, polymer fibres are resistant to the majority of corrosive environments. Fibre-reinforced concretes are a frequently implemented construction solution. The possibility of concrete modification allows the emergence of new construction materials with improved physical-mechanical properties, under the condition of being applied relevantly.

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Krishnan, Arsha, and V. N. Krishnachandran. "Coir Fiber Reinforced Concrete-Review." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (September 30, 2022): 568–71. http://dx.doi.org/10.22214/ijraset.2022.46677.

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Abstract: As a practical means of enhancing concrete's performance, fiber reinforced concrete (FRC) is gaining popularity. It is crucial to find acceptable, low-cost building and reinforcing methods that work for emerging nations. Utilizing natural fibers may drastically reduce the cost of construction. Prior research in the literature indicates that using coir fibers in concrete improves concrete strength. However, information about the use of coir fiber in concrete is scattered. This report presents a detailed analysisto highlight the usage of coconut fibers as reinforcing material in recent years.

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Vogel, Filip. "Production and Use of the Textile Reinforced Concrete." Advanced Materials Research 982 (July 2014): 59–62. http://dx.doi.org/10.4028/www.scientific.net/amr.982.59.

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This article discusses about the textile reinforced concrete. The textile reinforced concrete is a new material with great possibilities for modern construction. The textile reinforced concrete consists of cement matrix and textile reinforcement of high strength fibers. This combination of cement matrix and textile reinforcement is an innovative combination of materials for use in the construction. The main advantage of the textile reinforced concrete is a high tensile strength and ductile behavior. The textile reinforced concrete is corrosion resistant. With these mechanical properties can be used textile reinforced concrete in modern construction.

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Ischenko, Aleksandr, and Anastasia Borisova. "Application of fiber-reinforced concrete in high-rise construction." E3S Web of Conferences 164 (2020): 02005. http://dx.doi.org/10.1051/e3sconf/202016402005.

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In this research, we study the use of fiber-reinforced concrete, including steel fiber-reinforced concrete in the construction of outrigger floors of a high-rise building. The definition and classification of fiber-reinforced concrete as a construction material, the methodology for calculating high-rise buildings using fiber-reinforced concrete, the advantages and disadvantages of this composite material, and the specifics of its use are formulated. The domestic and foreign experience in use of fiber-reinforced concrete is analyzed. The rationale for its use on the experience of construction of residential building in seismically active regions is given. A comparative analysis of concrete and fiber concrete use in the outrigger floors’ construction is carried out.

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Alawlaqi, Hashed. "COMPARATIVE ANALYSIS BETWEEN RC CONSTRUCTION AND LIGHTWEIGHT STEEL CONSTRUCTION." InterConf, no. 13(109) (May 20, 2022): 7–13. http://dx.doi.org/10.51582/interconf.19-20.05.2022.001.

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The construction of lightweight steel has been remarkable in multiple applications including residential, commercial and industrial buildings. Many studies focus on the advantages of building lightweight from several aspects. This article highlights a comparative study of the construction of lightweight steel and construction by reinforced concrete in technical and economic aspects such as the weight of the building, construction time and construction conditions. In this article, the construction of lightweight steel appears to be the big difference in the weight of the building compared with the construction of the reinforced concrete and also by construction duration, which the construction needs from start to finish. It is also illustrated that direct and non-direct cost for light-weight steel construction is less than the cost of construction with reinforced concrete.

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Khechinov, Yu E. "Disperse-reinforced concrete in hydrotechnical construction." Hydrotechnical Construction 25, no. 9 (September 1991): 575–81. http://dx.doi.org/10.1007/bf01836484.

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Grima López, Rosa, Antonio Aguado de Cea, and Josep Gómez Serrano. "Gaudí and Reinforced Concrete in Construction." International Journal of Architectural Heritage 7, no. 4 (January 2013): 375–402. http://dx.doi.org/10.1080/15583058.2011.632470.

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Alrshoudi, Fahed. "Behaviour of Textile-Reinforced Concrete Beams versus Steel-Reinforced Concrete Beams." Advances in Civil Engineering 2021 (February 19, 2021): 1–8. http://dx.doi.org/10.1155/2021/6696945.

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There has been a rising interest in utilising textile reinforcement such as carbon tows in constructing concrete components to enhance the performance of conventional reinforced concrete. Textile-reinforced concrete (TRC) has been used as a construction material mostly as primary reinforcement. However, the structural performance of TRC members has not been investigated in depth. Therefore, to better understand TRC beams’ behaviour under bending load, a widespread experimental investigation was conducted. The results of tensile stress-strain, load-deflection, moment-curvature, and tension stiffening behaviours of TRC beams were associated with conventional steel-reinforced concrete (SRC) beams. In this study, the four-point bending and tensile strength tests were performed. The results revealed that, unlike the stress-strain behaviour observed in steel, textile reinforcement does not exhibit yielding strain. The flexural behaviour of TRC beams shows no similarity to that of SRC beams at postcracking formation. Besides, the moment capacity and tension stiffening of TRC beams were found 56% and 7 times higher than those of SRC beams, respectively. Therefore, in light of these results, it can be said that TRC beams behaviour differs from that of SRC beams.

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Zhao, Dong Qi, Yi Jun Tang, Hui Li, Gui Feng Song, and Feng Ling Guan. "The Application Research of Reinforced Concrete Multi-Ribbed Hollow Composite Slab in the Road Slab Culvert." Advanced Materials Research 368-373 (October 2011): 307–11. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.307.

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Reinforced concrete cover in the road culvert cover design, in order to facilitate the construction, usually using precast reinforced concrete solid slab, but the overall cost is not low. This article researched a reinforced concrete multi-ribbed hollow composite slab, it based on the theory of reinforced concrete multi-ribbed slab structures, using a precast reinforced concrete ribbed slab as the bottom die, then poured reinforced concrete beams and panels rib ,and them constituted a whole stack of reinforced concrete ribbed hollow slab. This kind of cover, compared with the precast reinforced concrete solid cover, is not only good mechanical properties, high integrity, but also saving concrete, steel, and bottom slab appeared smooth and fine, lower construction cost.

14

Pasek, Jan, and Ludek Vejvara. "Degradation of the Building Structures due to Carbonation of Concrete." Advanced Materials Research 1020 (October 2014): 37–42. http://dx.doi.org/10.4028/www.scientific.net/amr.1020.37.

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Carbonation of the concrete is a process influencing acceleration of the aging of concrete during the time, at reinforced concrete structures it is usually accompanied with corrosion of the reinforcement and disturbances of the covering layer of the concrete. Its consequence is decrease of the static reliability of the reinforced concrete building structures. Carbonation of the construction from common concrete and lightened concrete causes just in the CR damage worth billions of Czech Crowns every year. The paper refers about seriousness of the current technical state of reinforced concrete structures and influence of the most important factors on the course of their degradation caused by carbonation and specifies principles for designing new reinforced concrete constructions.

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Y M, Dr Vijaya Kumar, and Dr Meena Y R. "Bamboo Reinforced Concrete." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (September 30, 2022): 943–47. http://dx.doi.org/10.22214/ijraset.2022.46771.

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Abstract: This study presents the evaluation of the feasibility of the use of Bamboo as reinforcement material. Here Bamboo was used as a reinforcing material. Now a day’s concrete is used as the basic materials for construction works. Concrete is good in compression but weak in tensile strength. So, steel is used as reinforcement in the concrete to achieve the tensile strength. Problems encountered with the use of steel are high in cost, corrosion, etc. The main obstacle for the application of Bamboo as a reinforcement is the lack of sufficient information about its interaction with concrete strength and durability.

16

Chyzhov, Sergey, Yekaterina Shestakova, Elbek Yakhshiyev, and Anatoliy Antonyuk. "Design principles of prestressed concrete span coponents in the process of despersed reinforcement." Proceedings of Petersburg Transport University, no. 2 (June 20, 2017): 343–53. http://dx.doi.org/10.20295/1815-588x-2017-2-343-353.

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Objective: To determine the calculating justification methods of fibre-reinforced spans and scientific evidence of the structural method of dispersed reinforced concrete constructions in drily-hot climate for high-speed mainline railroads, to reveal advantages connected with fibre application in the process of construction, to determine the ways of total costs reduction while providing qualitative reliability characteristics of spans under construction. Methods: Comparative analysis, mathematical modeling. Results: Calculating principles of fibre-reinforced elements of spans were specified. The study was aimed at application solving, with regard to climate in Uzbekistan, and determined the parameters of Lр = 66 m fibre-reinforced concrete span, specified by the objective of scientific study concerning the bridgework for high-speed mainline railroad. Practical importance: Methodological foundation for fibre-reinforced concrete spans calculation was developed.

17

Frolov, Kirill E. "Experimental studies of reinforced concrete structures of hydraulic structures strengthened with composite materials." Structural Mechanics of Engineering Constructions and Buildings 15, no. 3 (December 15, 2019): 237–42. http://dx.doi.org/10.22363/1815-5235-2019-15-3-237-242.

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Relevance. During the operation process (first of all, long-term operation) of hydraulic structures, it becomes necessary to strengthen their reinforced concrete structures. In recent years, reinforcement of reinforced concrete structures has been used in industrial and civil construction by external reinforcement systems made of composite materials (for example, carbon materials). In this case, in hydraulic engineering construction there are only isolated examples of such amplification. Aims of research. Experimental studies of reinforced concrete structures of hydraulic structures strengthened with external reinforcement from carbon materials presented in the article were carried out in order to substantiate the use of external reinforcement based on carbon materials (tapes and lamellae) to reinforce reinforced concrete structures of hydraulic structures. Methods. In order to carry out an experimental study of the strengthening of hydraulic structures with external reinforcement, reinforced concrete models of hydraulic structures of a beam type were made of carbon materials. At the same time, reinforced concrete structures with characteristic features of hydraulic structures, such as low concrete classes and reinforcement percentages (less than 1%), were adopted for modeling. Reinforced concrete models were strengthened with carbon ribbons and lamellae. Experimental studies were carried out under the action of a bending moment using standard methods. The increase in the strength of reinforced concrete structures due to their reinforcement with carbon ribbons and lamellae was determined. Results. The results of experimental studies of the strength of reinforced concrete structures of hydraulic structures without reinforcement and reinforced with carbon ribbons and lamellae under the action of a bending moment are presented. On the basis of the comparison carried out, the increase in the strength of reinforced concrete structures is determined by their reinforcement with carbon ribbons and lamellae.

18

Li, Zhong Long, Hong Lin Wu, Zhen Yu Liu, De Jian Xu, Hong Jiang Gu, and Xiao Di Zhu. "Ultimate Flexural Bearing Capacity Research Based on Carbon Fiber Sheet to Reinforce Rough Sleeper Beam." Applied Mechanics and Materials 226-228 (November 2012): 1766–70. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1766.

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In this paper, it makes a preliminary study on the material of carbon fiber sheet to reinforce rough sleeper beam in order to enhance the magnitude of ultimate flexural bearing capacity. Considering the actual construction technology and environment, four reinforced concrete sleeper beams are used to experiment simulation to study the influence of carbon fiber sheet to ultimate flexural bearing capacity of reinforced concrete structures. Experiment results show that pasting two layers of carbon fiber sheet under reinforced concrete beam can have about a 25% increase in flexural bearing capacity.

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Hou, Xin Ning, and Yong Sheng Zhang. "Talking about the Importance of the Construction of the Reinforced Protective Layer Control." Applied Mechanics and Materials 256-259 (December 2012): 859–62. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.859.

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Reinforced protective layer to ensure the durability of reinforced concrete structures important tectonic structures plays a vital role. Reinforced concrete reinforced the lack of a protective layer will affect the durability of the components, in serious cases, the member failure early. Meticulous construction, requires not only the structure of acceptable quality, also require durability is better. This paper tries to force mechanism of reinforced concrete together, combined with years of construction practice, to talk about the importance of control in the construction of reinforced protective layer.

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SOPILNIAK, А. М., V. V. KOLOKHOV, V. V. SHLIAKHOV, A. A. TYTIUK, and А. S. SMYRNOV. "IMPROVEMENT OF REINFORCED CONCRETE ENVELOPES FOR LOW-RISE BUILDINGS." Ukrainian Journal of Civil Engineering and Architecture, no. 2 (July 9, 2022): 92–101. http://dx.doi.org/10.30838/j.bpsacea.2312.260422.92.856.

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Problem statement. A perspective direction to ensure modern requirements for thermal protection of buildings without a significant increase in material and labor resources and, most importantly, cost is the application of multilayer reinforced concrete panels, using efficient thermal insulation. In 2012−2013, some experience in the use of modern prefabricated three-layer reinforced concrete panels in cottage construction is obtained. This experience has revealed some shortcomings of such panels using on the building site and the need to modernize their production technology. In addition, improvements in joint construction and the use of aggregate concrete from recycled concrete scrap are relevant. The purpose of the article is to develop constructive solutions for low-rise buildings using multilayer reinforced concrete panels with effective insulation and to determine directions for further modernization of the developed structures. Conclusions. The developed constructive solutions for low-rise construction of houses using multilayer reinforced concrete panels with effective insulation are modern and exceed the standards for heat saving and are relevant today given the cost of energy. The developed constructive solutions of wall panels together with interpanel seams construction from the point of view of thermal homogeneity are the most homogeneous today in comparison with analogs. The panel joints construction is considered taking into account the conditions of durability and thermal conductivity. The directions of the developed constructions further modernization for wall panels and floor slabs are defined. The developed constructive solutions for panel house-building and factory production of wall panels and floor slabs reduce the time and cost of construction.

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Zhao, Jun, and Wei Wei Jia. "Random Analysis of RC Structures during Construction." Applied Mechanics and Materials 105-107 (September 2011): 981–85. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.981.

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Since accidents of reinforced concrete structure occur frequently, it is a key issue to ensure the safety and stability of structures during construction. In this paper, each construction cycle was divided into four stages using discrete time method of freezing to establish the computational model. According to random theory, with the characteristics of reinforced concrete structures during construction, a series of recurrence equation is built by stochastic finite element method during construction. Based on a random analysis of practical engineering, the random response time-varying rule of reinforced concrete structure is obtained during construction. The results show that the construction process of reinforced concrete structure could be simulated well based on perturbation stochastic finite element method .Both the mean and standard deviation of deflection of mid-span could be obtained precisely.

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Setyowati, Martha. "PERKEMBANGAN PENGGUNAAN BETON BERTULANG DI INDONESIA PADA MASA KOLONIAL (1901-1942)." Berkala Arkeologi 39, no. 2 (November 5, 2019): 201–20. http://dx.doi.org/10.30883/jba.v39i2.468.

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The discovery of reinforced concrete became a major breakthrough in modern construction technology in the early 20th century. In five decades reinforced concrete has developed rapidly and was used in almost all parts of the world. Reinforced concrete was first introduced in Indonesia during the colonial period. The used of reinforced concrete increased along with the construction growth in the Dutch East Indies. The used of reinforced concrete between 1901 and 1942 can be seen from the buildings and infrastructure that still exist today. However the development of reinforced concrete in Indonesia during colonial period not widely explored yet. Because of that this study aims to provide an overview of the development of reinforced concrete used during the colonial period using archaeological data and supported by historical data. This research uses secondary data sources obtained through literature study. Based on this research it can be concluded that the development of the reinforced concrete used in the colonial period showed the progress of construction technology as well as economic and social conditions at that time.

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Purba, Burt K., and Aftab A. Mufti. "Investigation of the behavior of circular concrete columns reinforced with carbon fiber reinforced polymer (CFRP) jackets." Canadian Journal of Civil Engineering 26, no. 5 (October 1, 1999): 590–96. http://dx.doi.org/10.1139/l99-022.

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Recent advancements in the fields of fiber reinforced polymers (FRPs) have resulted in the development of new materials with great potential for applications in civil engineering structures, and due to extensive research over recent years, FRPs are now being considered for the design of new structures. This study describes how carbon fiber reinforced polymer jackets can be used to reinforce circular concrete columns. Fibers aligned in the circumferential direction provide axial and shear strength to the concrete, while fibers aligned in the longitudinal direction provide flexural reinforcement. Prefabricated FRP jackets or tubes would also provide the formwork for the columns, resulting in a decrease in labor and materials required for construction. Also, the enhanced behavior of FRP jacketed concrete columns could allow the use of smaller sections than would be required for conventionally reinforced concrete columns. Furthermore, FRP jacket reinforced concrete columns would be more durable than conventionally reinforced concrete columns and therefore would require less maintenance and have longer service life.Key words: bridge, carbon, column, concrete, confinement, fiber reinforced polymer, jacket, retrofitting, seismic, strengthening.

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Zuo, Yong Zhi, Jing Bo Sun, Qiao Zhi Lu, Hai Wen Teng, Tao Zhang, and Huan Liu. "Case Fuzzy Retrieval of Reinforced Concrete Structures Accidents Based on CBR." Applied Mechanics and Materials 501-504 (January 2014): 568–73. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.568.

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In order to help engineers to better learn from accidents of reinforced concrete structures, accident identification and processing method, this article introduced the ideas of CBR to the accident case retrieval methods of reinforced concrete structures. At the same time, the fuzzy retrieval and knowledge index model of reinforced concrete structure accidents are presented. According to the approximate extent of construction conditions, the approximation of construction are determined, and similar cases with the current engineering cases then retrieved through the case of reinforced concrete structures, which the designer or construction workers can learn from.

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Davidyuk, Artem, and Igor Rumyantsev. "Quality control of high-performance concrete in high-rise construction during operation." MATEC Web of Conferences 170 (2018): 01035. http://dx.doi.org/10.1051/matecconf/201817001035.

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With onset of the XXI century, the demand for construction of high-rise buildings with the load-bearing framework made of high-performance cast-in-situ concrete has increased many-fold in the construction sector. Specific features of the high-performance concrete of bearing structures in the situation of real operation of high-rise buildings are continuously studied by scientists and specialists all over the world, and regulatory and methodological documents are being complemented and adjusted. High-performance concretes and structures made of them possess some specific features that should be taken into account in quality control. The methods of concrete inspection and concrete strength evaluation described in GOST 18105 “Concretes. Guidelines on Testing and Evaluation of Strength” and GOST 22690 “Concretes. Evaluation of Strength by Mechanic Non-Destructive Test Methods” were written when precast reinforced concrete was predominantly used in the construction sector and were limited to the functions of intra-factory quality control of reinforced concrete products. At present, instruments for non-destructive testing using indirect methods are usually calibrated with the help of local destructions, as a rule, a pull out or rib shear test. The said methods are in fact indirect since they indicate the force of destruction of the surface layer of a structure.

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Synkovska, Olena, and Andrii Ihnatenko. "PLANNING OF EXPEREMENTAL RESEARCH СYLINDRICAL LOAD-BEARING SUPPORT OF BUILDINGS." Modern technology, materials and design in construction 32, no. 1 (June 28, 2022): 49–54. http://dx.doi.org/10.31649/2311-1429-2022-1-49-54.

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A new construction of cylindrical load-bearings support of buildings is offered, that has an alternative reinforced concrete and with using of several different ways of indirect use. Shell is introduced for the view of the new construction sieved sheet, that is created from non-exit technology using imbibitions and extrusion of the steel sheet itself.. For gaining the maximum amount of advantages and disadvantages from the introduced us reinforced concrete elements with mesh shell. The most efficient is method is a comprehensive research of introduced construction, as well as an already known researches of reinforced concrete with mesh shell. That's why, when we are calculating labor, material intensity and cost of these experimental researches. Keep in mind that this is promtly and relevant researches. In this work while planning the experiment some things were taken to consideration: best way for the construction to give the weight to reinforced concrete part and how to define the level of influence of factors like this: cyclicity, eccentricity, type of shell, thickness and diameter of shell, durability of concrete and deformation of reinforced concrete constructions. So, to get the most reliable information from these researches with minimal waste, we need to optimize parameter of load-bearing capacity and deformation and parameter of restriction-destruction. A calculation was made for optimizing the experiment about minimal amount of researches and conditions where they are done, and that is enough to salve the problem precisely.

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Kieslich, Hubertus, and Klaus Holschemacher. "Composite Constructions of Timber and High-Performance Concrete." Advanced Materials Research 133-134 (October 2010): 1171–76. http://dx.doi.org/10.4028/www.scientific.net/amr.133-134.1171.

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Currently Timber-Concrete Composite (TCC) Constructions are often applied for strengthening existing timber beam slabs. The load bearing capacity of the composite construction is primarily affected by the material properties of the timber beam and the concrete slab. But the type of bond between both parts is also of high importance. The concrete slab has to perform several tasks, not only in load carrying direction of the ceiling but also perpendicular to the direction of span or for stiffening the whole building. These tasks will be pointed out in this paper. Furthermore the working process (easy workable mixture and exchange of conventional reinforcement) and the dead load of the construction are of particular interest in the field of redevelopment. Several innovative concretes have been verified for the use in TCC constructions. Regarding their fresh and hardened concrete properties, they all can be described as High Performance Concretes (HPC). In this paper Self Compacting Concrete (SCC), Fiber Reinforced Concrete (FRC), Structural Lightweight Concrete (SLWC), High Strength Concrete (HSC) or combinations of them will be focused. Especially the advantages but also the disadvantages of innovative concretes for the use in TCC will be presented as well as the results of some experimental investigations.

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Deineko, Andrei V., Valentina A. Kurochkina, Irina Yu Yakovleva, and Aleksandr N. Starostin. "Design of reinforced concrete slabs subject to the construction joints." Vestnik MGSU, no. 9 (September 2019): 1106–20. http://dx.doi.org/10.22227/1997-0935.2019.9.1106-1120.

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Introduction. When erecting monolithic reinforced concrete floor slabs, a necessity of construction joints arises. The construction joints are the areas of structural weakening. The construction practice shows that the compliance with the correct technology of the construction joint arrangement is not a sufficient condition to ensure the strength balance of reinforced concrete floor slabs. As a result, the stress-deformation state calculated on the assumption of the concrete slab solidity deviates from the actual state. The relevance of the task is determined by the fact that the conformity of design and actual characteristics of the in-situ reinforced concrete structures as a whole depends on the correct calculations of construction joints. Materials and methods. The problem of implementing the construction joints in the monolithic floor slabs was considered by way of example of a residential building under construction. In the course of construction, pre-construction land surveys were carried out at the areas of the construction joint arrangement. Calculations of reinforced concrete structures using finite element method (FEM) were also performed. Results. As a result of the study, the actual deflections of the floor slabs were measured at the areas of the construction joints and FEM calculations were made on the same floor slabs, both those erected at once and those erected in stages subject to the construction joints. The difference between the calculated and actual deflections is conditioned upon the inaccurate conformity between the mathematical model and the real reinforced concrete structure, its erection and maintenance conditions. It should be noted that the deflection of horizontal reinforced concrete structures is only one of the stress-deformation state parameters that can be measured better than the others. It is shown that if the deflection of a real reinforced concrete structure does not correspond with the design estimation, the other stress-deformation state parameters will differ from the design estimation as well. Conclusions. The influence of joints can be taken into account in the scope of FEM computer-aided calculations with the explicit reproduction of the structure erection by pouring concrete, using engineering approach to the consideration of nonlinearity on the basis of the introducing reduction coefficients to the reinforced concrete effective modulus of elasticity. Solid composition modeling of reinforced concrete provides the best possibilities on taking all sorts of nonlinearity manifestations into consideration.

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Zhao, Jun. "Reliability Analysis of Reinforced Concrete Structural during Construction." Applied Mechanics and Materials 71-78 (July 2011): 310–14. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.310.

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According to random field theory, combined with the construction of the characteristics of reinforced concrete structures, based on the geometric significance of the reliability index, the optimization algorithm of the reliability was established, and the reliability calculation algorithm of reinforced concrete structural during construction is proposed based on stochastic finite element method. Based on a stochastic analysis of the practical engineering, the time-varying laws of the reinforced concrete structural reliability index during construction are concluded.

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Tanveer Majid, Muhammad. "The effect of twisted polymer fibers on the physical and mechanical properties of C35 concrete." Journal of Research in Science, Engineering and Technology 7, no. 4 (September 29, 2020): 11–15. http://dx.doi.org/10.24200/jrset.vol7iss4pp11-15.

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Concrete as the most used material, is known as an integral part of construction. So far, many studies have been done in the field of improving the quality of concrete that most of them have examined change in concrete mix design; however, the use of additives and also replacing commonly used materials in concrete with new materials always has been considered. Today, different fibers, especially Forta fibers, are used. In this study, experiments on Forta fiber- reinforced concrete are described. The concrete mixing design and Forta fiber properties are also briefly described. The comparison between the results of the tests showed that Forta fiber- reinforced concretes have more bending strength and modulus of elasticity than normal and ordinary concretes.

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Rubin, Oleg D., Sergey E. Lisichkin, and Oksana V. Zyuzina. "Experimental studies of the stress-strain state of reinforced concrete structures strengthened by prestressed basalt-composite rebar." Structural Mechanics of Engineering Constructions and Buildings 17, no. 3 (October 24, 2021): 288–98. http://dx.doi.org/10.22363/1815-5235-2021-17-3-288-298.

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Relevance. In recent years, composite materials have become widespread in the construction of reinforced concrete structures for industrial, civil and transport structures. It is proposed to strengthen the reinforced concrete structures of hydraulic structures with prestressed basalt composite rebar. It took an experimental and theoretical substantiation of technical solutions to strengthen the reinforced concrete structures of hydraulic structures with prestressed basalt composite reinforcement. The aim of the work was to carry out a set of experimental and theoretical studies of the stress-strain state and internal forces in low-reinforced concrete structures of hydraulic structures reinforced with prestressed basalt composite rebar. Methods. Experimental studies of the stress-strain state and internal forces were carried out on the basis of low-reinforced concrete beam-type models with interblock construction joints, harden with prestressed basalt composite reinforcement in the stretched (compressed) zones of the models. Theoretical studies of the stress-strain state and internal forces were carried out on the basis of the theory of reinforced concrete and structural mechanics. Results. As a result of the research carried out on typical low-reinforced concrete structures of hydraulic structures with interblock construction joints, the main stages of the stress-strain state of hydraulic reinforced concrete structures were formulated. Based on the data of experimental and theoretical studies, taking into account the reinforcement with prestressed basalt composite rebar, as well as with prestressed clamps in the shear zone, a method was developed for calculating the strength of low-reinforced hydrotechnical reinforced concrete structures with interblock construction joints.

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Cui, Wen, and Qin Luo. "Application Study on the Steel Fiber Reinforced Concrete." Applied Mechanics and Materials 204-208 (October 2012): 3740–43. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3740.

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Mix design of the steel fiber reinforced concrete was analyzed based on the engineering conditions. It was indicated by comparing with the strength values of steel fiber reinforced concrete (CF40) and ordinary concrete (C40) that the tensile strength of the steel fiber reinforced concrete increased about 70%, the compressive strength increased about 10%, the initial cracking strength increased about 150%.The reasonable construction technologies were used in mixing, transportation, pouring, vibrating and curing of the steel fiber reinforced concrete in order to ensure quality of the construction.

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Bobalo, Taras, Yaroslav Blikharskyy, Rostyslav Vashkevich, and Myhailo Volynets. "Bearing capacity of RC beams reinforced with high strength rebars and steel plate." MATEC Web of Conferences 230 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201823002003.

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Nowadays, reducing the material content of not only buildings and structures in general, but also individual constructions is a topical task that can be realized through the use of high-strength concrete and reinforcement, as well as with the use of external reinforcement. The concentrated location of sheet reinforcement on the external the most tense facets of steel and concrete structures increases the operating height of the cross-section, makes it possible to more effectively use the strength properties of steel in comparison with conventional reinforced concrete, and with the same bearing capacity to economize on expenses. Composite and monolithic reinforced concrete structures with external reinforcement are used in various construction sectors around the world. This contributed to the expansion of the use of reinforced concrete for special buildings of power-engineering and hydrotechnical construction. The technical nd econom efficiency, as well as the possibility of using external rebar as formwork for monolithic concrete construction, have been proved. Therefore, there is a need for the study of structures with combined reinforcement, in which high rigidity of steel and concrete structures is combined with an effective use of high-strength reinforcing bars (rebar) without prior tension

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Pei, Weichang, Daiyu Wang, Xuan Wang, and Zhenyu Wang. "Axial monotonic and cyclic compressive behavior of square GFRP tube–confined steel-reinforced concrete composite columns." Advances in Structural Engineering 24, no. 1 (July 20, 2020): 25–41. http://dx.doi.org/10.1177/1369433220934557.

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Fiber-reinforced polymer tube–confined steel fiber–reinforced concrete column is a novel composite column proposed recently, which consists of a traditional steel-reinforced concrete column and an external glass fiber–reinforced plastic tube for lateral confinement. In order to investigate the axial compression behavior of steel fiber–reinforced concrete columns, a total of 16 square specimens were fabricated and tested under axial monotonic and cyclic compressive loading. Three different configurations of inner shaped steels, including cross-shaped, box-shaped with wielding, and box-shaped without wielding were considered. Two thicknesses of glass fiber–reinforced concrete tubes were also considered as the main experimental parameters. On the basis of test results, a thorough analysis of the failure process based on strain analysis was discussed. The test results showed that steel fiber–reinforced concrete columns exhibited higher ductility and load capacity compared with fiber-reinforced plastic–confined plain concrete columns. Two quantitative indexes were proposed to measure the confinement of steel fiber–reinforced concretes. The axial cyclic mechanical behaviors were discussed through comparative analysis with monotonic behaviors. The remnant strains and modulus of the cyclic behaviors were also discussed.

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Zhang, Shao Jun. "The Construction Quality Control Measures of Reinforced Concrete Cover Research." Applied Mechanics and Materials 599-601 (August 2014): 1094–97. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.1094.

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reinforced concrete structures reinforced protective layer deviation will directly affect the mechanical properties and durability of the reinforced concrete member, in relation to the structure of the use of safety and service life. The control to the protective layer of reinforced concrete structures include the following aspects: to do a good job of double sample, reinforced the blue prints.the design, production and installation of template engineering, reinforcing steel bar colligation molding process, placed, binding of fixed steel protective layer block and the requirements on the installation of the steel skeleton.

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Wang, Xian Dong, Chang Zhang, Zhen Huang, and Guo Wei Chen. "Impact Experimental Research on Hybrid Bamboo Fiber and Steel Fiber Reinforced Concrete." Applied Mechanics and Materials 357-360 (August 2013): 1049–52. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.1049.

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This paper studied experimentally the impact mechanical properties of bamboo fiber and hybrid steel fiber reinforced concrete. Steel fiber is already used in construction widely, but it is expensive in cost. As a kind of green building material, bamboo fiber can be used in the infrastructures together with concrete to improve the concretes mechanical properties. In order to investigate the impact mechanical properties of concrete reinforced with bamboo fiber and steel fiber, a series of concrete specimens reinforced with bamboo fiber, steel fiber or both steel fiber and bamboo fiber are investigated with self-designed impact device. The impact resistance abilities are tested and compared.

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Sobczak-Piąstka, Justyna, Oksana Lytvyniak, Andrii Kramarchuk, Borys Ilnytskyy, and Yuriy Famulyak. "A Study of Sandwich Reinforced Concrete – Foamed Concrete Floor Slabs." IOP Conference Series: Materials Science and Engineering 1203, no. 3 (November 1, 2021): 032038. http://dx.doi.org/10.1088/1757-899x/1203/3/032038.

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Abstract The development of housing construction demands an application of building materials which ensure necessary functional performance of structures, have high heat-insulating properties, are environmentally friendly and their use is economically appropriate. Simultaneous ensuring of mentioned indices is possible because of complex combined joining of building materials with different physical-mechanical properties. This article presents experimental determination of useful load for sandwich reinforced concrete – foamed concrete floor slabs. Sandwich reinforced concrete – foamed concrete floor slabs are the floor slabs which are composed of normal concrete, non-autoclaved foamed concrete and spatial reinforcement frame. Experimental determination of useful load was carried out on series that compose of four sandwich reinforced concrete – foamed concrete floor slabs. Experimental test of sandwich reinforced concrete – foamed concrete floor slabs was carried out under condition of pure bending that was achieved by applying to floor slab in one third of its span two concentrated forces equal in magnitude. Useful load for sandwich reinforced concrete – foamed concrete floor slabs was 33.23÷77.87 kN/m2. Sandwich reinforced concrete – foamed concrete floor slabs are proposed to be used in construction of housing and social structures.

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Kollegger, Johann, Bernd Köberl, Helen Kane, Sebastian Zoran Ambro, Andreas Kainz, and Herbert Pardatscher. "Construction of Reinforced Concrete Shells without Formwork." IABSE Symposium Report 92, no. 11 (January 1, 2006): 1–8. http://dx.doi.org/10.2749/222137806796184932.

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Saadatmanesh, H., and M. R. Ehsani. "Fiber Composite Bar for Reinforced Concrete Construction." Journal of Composite Materials 25, no. 2 (February 1991): 188–203. http://dx.doi.org/10.1177/002199839102500204.

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Jie, Huang Dong, and Yung Tak Hung. "Construction of Long Span Reinforced Concrete Beams." HKIE Transactions 15, no. 2 (January 2008): 29–34. http://dx.doi.org/10.1080/1023697x.2008.10668115.

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Au, F. T. K., J. J. Wang, and G. D. Liu. "Construction Control of Reinforced Concrete Arch Bridges." Journal of Bridge Engineering 8, no. 1 (January 2003): 39–45. http://dx.doi.org/10.1061/(asce)1084-0702(2003)8:1(39).

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Parameswaran, V. S. "Fibre-reinforced concrete: a versatile construction material." Building and Environment 26, no. 3 (January 1991): 301–5. http://dx.doi.org/10.1016/0360-1323(91)90054-f.

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Alsadey, Salahaldein, Miftah Abdallateef, Muftah Mohamed, and Abdalrhman Milad. "Investigating Behaviour of Reinforced Concrete with Glass Fibre." Jurnal Kejuruteraan 33, no. 3 (August 30, 2021): 551–57. http://dx.doi.org/10.17576/jkukm-2021-33(3)-16.

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Concrete is the most commonly used building material. Nowadays, the world has seen the construction of engineering applications that has become difficult and complicated. Therefore, it is important to have high strength and adequate workability. Besides that, the glass fibre is highly beneficial as a construction material for reinforced concrete as it can be identified as one of the numerous compelling topics related to its benefits. This study contributes to the specification and classification of glass fibre reinforced concrete (GFRC). However, ordinary concrete has limited ductility, slight resistance to cracking, and insufficient tensile strength. Internal micro-cracks in the concrete are visible, and the proliferation of such micro-cracks caused its weak tensile strength. When a certain percentage of fibre is added to the concrete, it improves the properties of the strain, namely, resistance to cracking, ductility, toughness, and flexure strength. The current paper outlines the experimental study conducted on the usage of glass fibre with structural concrete. The parameters were used in percentages, which varied from 0.5% to 2% by weight of cement in concrete, and the properties of the FRC (fibre reinforced concrete), such as ultrasonic pulse velocity test, flexure strength, and compressive strength were examined. However, it refers to an increase in deformation before failure of the structural concrete, reinforced with a high ratio of GFR. The results show good performance of concretes containing glass fibre and increasing glass fibre content, increasing the compressive strength.

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RUBIN, O. D., S. E. LISICHKIN, and O. V. ZYUZINA. "THE INFLUENCE OF BASALT-COMPOSITE PRESTRESSED REINFORCEMENT ON THE OPERATION OF LOW-REINFORCED CONCRETE STRUCTURES WITH INTERBLOCK CONSTRUCTION JOINTS." Prirodoobustrojstvo, no. 5 (2020): 50–59. http://dx.doi.org/10.26897/1997-6011-2020-5-50-59.

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It is proposed to use prestressed basalt composite reinforcement to strengthen reinforced concrete structures of hydraulic structures. In order to substantiate technical reinforcement of reinforced concrete structures of hydraulic structures with prestressed basalt composite inforcement, experimental studies were carried out. For experimental studies, reinforced concrete beam-type structures with vertical interblock construction joints were adopted.The results of experimental studies of reinforced concrete models of beam type with interblock joints reinforced with prestressed basalt composite reinforcement by the method of tension “on concrete”are presented. The models are tested for bending moment and transverse force. A special character of cracking is noted; full restoration of the bearing capacity of reinforced concrete structures, weakened by interblock construction joints, was recorded due to the reinforcement of prestressed basalt composite reinforcement.

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Elshina, Lyudmila. "Durability of Concrete Reinforced by Specific Rebar." MATEC Web of Conferences 251 (2018): 02039. http://dx.doi.org/10.1051/matecconf/201825102039.

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Design of reinforced concrete is based on assuming that applied rebar has no corrosion damages at its surface. However, conventional construction practice allows the rebar embedded into concrete to have surface rust. Being transported in open railway cars, by river or marine transports, being in warehouses of intermediate traders and then affected during this time by an atmospheric precipitation and sometimes even aggressive agents of the environment (for example, being in direct contact with remains of chlorides which are earlier transported in the same cars), rebar arrives to construction site with corrosion defects of different types and various extents. Corrosion damages are caused not only by the conditions of its transportation and storage, but also by poor quality of the steel itself. This may lead to dangerous consequences such as sudden collapses of building constructions without preliminary visible deflections and deformations. One of the reasons of sudden structure collapses related to steel quality is strong structure heterogeneity stressed out by the slag immerge at the surface from the bar’s core. The emergence of slag to a surface of the rebar is especially noticeable in rebar produced by a multilane casting method. The solution of durability problems of reinforced concrete structures is based on competent design, identification and application of necessary methods of corrosion resistance for steel rebar, quality control in producer facilities as well as on the construction site of the consumer, increase in durability of bonding of rebar with concrete, and sufficient choice of primary and secondary anticorrosive protection for rebar and concrete.

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Kazakov, Dmitry, Aleksandr Tkachenko, Arben Arzumanov, Leonid Bolotskikh, and Andrey Mishchenko. "Development of technology for the construction of heat-efficient monolithic vaults from basalt fiber concrete." E3S Web of Conferences 258 (2021): 09041. http://dx.doi.org/10.1051/e3sconf/202125809041.

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The paper considers the issue of erection of structures of buildings and structures from monolithic dispersed-reinforced concrete, capable of performing not only a load-bearing, but also a protective function. The analysis of a number of dispersed-reinforced concretes with both structural and thermal insulation properties has been carried out. An increase in thermal efficiency is expected through the use of industrial porous aggregates. The technical indicators of samples of basalt-fiber-reinforced concrete with fillers: perlite and foam glass have been experimentally investigated. Experimental relationships are obtained that characterize the compressive and bending strength, as well as the thermal conductivity of the materials under study.

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Wang, Gang. "The Crack Control of Reinforced Concrete Structures." Advanced Materials Research 1079-1080 (December 2014): 300–303. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.300.

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With the continuous development of the level of China's political, economic and social, the construction industry also obtained great progress. At the same time, the quality problems of all kinds of building has become a very serious problem which restricting the expansion of the scale of the enterprise. Along with the global integration, exchanges between domestic and foreign construction companies are becoming more and more frequent. The quality issues is in relation to the future of the construction industry. Only to deal with this problem, we can win in the international competition of the company. In the future for a long period of time, the construction industry will have a greater impact on the national economy of our country. If we can not solve the fundamental problem restricting the development of construction industry, the development of this industry will not sustainable. There is a very serious problem In the course of engineering construction which is the crack control of reinforced concrete structures. If this problem can be solved, we can produce a relatively good effect in the development of China's construction industry.

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Bakardzhiev, S. "Study of the behavior of a experimental reinforced concrete slab at different stages of loading from the production of the reinforced concrete slab over it." IOP Conference Series: Materials Science and Engineering 1276, no. 1 (February 1, 2023): 012024. http://dx.doi.org/10.1088/1757-899x/1276/1/012024.

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Abstract This report examines the behavior of a reinforced concrete slab, part of an experimental reinforced concrete structure, under loads derived from the casting of the formwork system of the subsequent plate and from the laid concrete mix in the slab above it. The deflections in the individual stages were measured with the help of dial gauges. The full strength and deformation characteristics of the concretes used in the construction were researched. The behavior at all stages of loading of the slab was studied, including each phase of formwork of the slab above it and the laying of the concrete in the formwork itself. Conclusions have been made about the behavior of the slabs during production using the method for Early striking of reinforced concrete slabs.

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Travush, Vladimir, and Vasily Murashkin. "CONCRETE DEFORMATION MODEL FOR RECONSTRUCTED REINFORCED CONCRETE." International Journal for Computational Civil and Structural Engineering 18, no. 4 (December 28, 2022): 132–37. http://dx.doi.org/10.22337/2587-9618-2022-18-4-132-137.

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During the reconstruction, or upon expiration of the service life, as well as after external impact, reinforced concrete structures require examination and verification calculations. Existing diagrams of concrete deformation are focused on designing new structures and are not adapted to the concretes of the reconstructed structures. Using the world experience in describing alloy deformation, the concrete deformation model based on using the Arrhenius equation is proposed in this article. A technique for creating an individual deformations model during the reconstruction is demonstrated on a specific example. The physical meaning of the coefficients used in the proposed model is illustrated. Examples confirming the adequacy of the proposed concrete deformations model during the reconstruction are given.

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SMORKALOV, Dmytro. "MONOLITHIC REINFORCED CONCRETE STRUCTURES WITH POST-TENSIONED ROPES." Building constructions. Theory and Practice, no. 10 (June 27, 2022): 136–42. http://dx.doi.org/10.32347/2522-4182.10.2022.136-142.

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Currently in Ukraine the use of monolithic structures with post-tensioned ropes, which is better known as the technology of "post-tension", and in domestic construction practice - as post-tensioned reinforced concrete structures with reinforcement tension "on concrete". Ropes are mainly used as tension reinforcement in such constructions. The article presents the main idea of post-tensioned monolithic reinforced concrete structures, presents the experience of using this technology in the construction of public buildings in Ukraine. Such designs have their advantages and scope. Sometimes such designs, in fact, have no other alternative. Therelevance of the study lies in the spread of the use of monolithic structures with post-tensioned ropes, the need to study such structures and the lack of regulatory documents for design. There are also examples of reinforcement of beams and slabs in slab structures and the main advantages of using posttension ropes in monolithic reinforced concretestructures on sites built in Ukraine.

Journal articles on the topic 'Reinforced concrete construction'

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