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Journal articles on the topic 'Early reinforced concrete structures'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Конин, Денис. "ПРОДОЛЬНЫЕ ДЕФОРМАЦИИ УКОРОЧЕНИЯ СТАЛЕЖЕЛЕЗОБЕТОННЫХ КОНСТРУКЦИЙ ПРИ СЖАТИИ ОТ НЕПРОДОЛЖИТЕЛЬНЫХ НАГРУЗОК". International Journal for Computational Civil and Structural Engineering 21, № 1 (2025): 202–21. https://doi.org/10.22337/2587-9618-2025-21-1-202-221.

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Determination and investigation of longitudinal deformations of shortening of steel-reinforced concrete structures is an important step in the calculation of complex spatial schemes of buildings. Ignoring these deformations can make it difficult to operate the facility and, in some cases, lead to the failure of adjacent structures. The study of longitudinal deformations of shortening of steel-reinforced concrete structures has not been given due attention before. The longitudinal deformations of shortening for steel-reinforced concrete compressed elements using a large range of heavy concretes

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Zhao, Nan, and Wen Yan. "Resistance Analysis of Reinforced Concrete Structures in Construction." Advanced Materials Research 368-373 (October 2011): 1535–38. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.1535.

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This paper analyses the characteristics of resistance of structural components, puts forward the concept of early resistance force of structural components, and discuss the main factors which affect it based on the field measurement investigation and theoretical analysis. Besides, in the paper the reduction factor is applied to reflect time-varying features of early-age concrete strength, and utilization coefficient of concrete strength is utilized to present the influence of early time-varying features of cohesive action on resistance. The paper finally deduces the formula of early-age resist

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Han, Yikuan, and Zhaoyi Wang. "Transplantation and Adaptation: Research on Reinforced Concrete Structures in Modern Nanjing (1909–1949)." Buildings 13, no. 6 (2023): 1468. http://dx.doi.org/10.3390/buildings13061468.

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Modern Nanjing experienced a boom in the construction industry. As an advanced material and construction system, reinforced concrete structure was also imported during this period. This paper presents the brief historical background and structural adaptability of reinforced concrete buildings in modern Nanjing. Reinforced concrete was used in industrial buildings in the districts along the Yangtze River in the early 20th century, and in public buildings along Zhongshan Road after 1927. Western-style reinforced concrete buildings used both pure frame structure system and mixed structure with a

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Korolko, Serhiy, and Bohdan Seredyuk. "Nanomodified rapid hardening concretes reinforced with dispersed basaltic fibers." Military Technical Collection, no. 24 (May 20, 2021): 57–63. http://dx.doi.org/10.33577/2312-4458.24.2021.57-63.

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The article considers modern perspectives and directions of using fast – hardening high – strength concretes for protection against striking factors of action of different types of weapons. It is shown that the use of concrete materials in weapons and military equipment is one of the important components of defense structures and protective fortifications during hostilities as platoons and bases, and structures for the protection of civilians. The possibility of obtaining such concretes for the creation of special purpose fortifications is shown. Developed concrete structures have increased st

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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 protect

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Shi, Nan Nan, and Da Hai Huang. "Experimental Study on Early-Age Crack of RC Using TSTM." Advanced Materials Research 919-921 (April 2014): 119–22. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.119.

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Thermal stress is a major cause of early-age crack of massive concrete structures. In order to analyze the influencing factors of concrete crack under thermal loads, a series of tests were conducted using the improved Temperature Stress Testing Machine (TSTM). Effects of temperature on crack resistance of concrete were studied on different concrete placing temperatures and curing temperatures. Meanwhile, the roles of reinforcement on concrete crack resistance and crack-width limitation were quantitative analyzed, which compare cracks of plain concrete and reinforced concrete with the same mix

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Blikharskyy, Yaroslav, Roman Khmil, Dušan Katunský, and Zinoviy Blikharskyy. "RC beams with an early phase of reinforcement damage." IOP Conference Series: Earth and Environmental Science 1376, no. 1 (2024): 012020. http://dx.doi.org/10.1088/1755-1315/1376/1/012020.

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Abstract This article presents the experimental results of reinforced concrete beams with thermally strengthened reinforcement. According to engineering experience, rein-forced concrete is the most commonly used construction material today. Rein-forced concrete structures are widely used in buildings and roof structures for both industrial and civil purposes. Reinforced concrete is optimally used as part of building structures and effectively performs its functions, perceiving various types of force and non-force influences, the nature of which depends on the conditions of operation in differe

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Baiburin, A. H. "Early Loading of Cast-in-Situ Reinforced Concrete Structures." Reinforced concrete structures 2, no. 2 (2023): 13–21. http://dx.doi.org/10.22227/2949-1622.2023.2.13-21.

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The article provides an overview of the existing methods of early loading of monolithic structures. It is shown that keeping concrete up to standard strength without taking into account the stages of loading leads to a significant increase in the cost of work, especially in winter. Based on experimental studies, formulas are proposed for calculating the required strength by the moment of loading of monolithic foundations, walls, columns, ceilings. Instructions are given on the design of early loading technology. The results of full-scale tests of floors under conditions of early loading are gi

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Abo Nassar, Nour Eldeen. "Reinforcement corrosion in reinforced concrete Structures: Classification and overview." International Journal of Advanced Engineering, Sciences and Applications 2, no. 1 (2021): 19–24. http://dx.doi.org/10.47346/ijaesa.v2i1.64.

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Reinforced concrete (RC) structures have the ability to be extremely durable and able to withstand a diversity of different environmental cases. However, failure in these structures still happens due to precocious reinforcement erosion. If steel reinforcement corrodes in concrete structures, this leads to a decrease in the lifetime and durability of these structures, which cause early failure of the structures, costing significantly to inspect and maintain the deteriorating structures. Then, monitoring of reinforcement corrosion is of great importance to prevent early failure of structures. St

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Ibran, Khan, Chaudhary Manu, Kumar Anil, Bhutani Kapil, and Bhardwaj Arun. "Study of Polypropylene Reinforced Concrete Structures." Journal of Building Construction 3, no. 1 (2021): 1–6. https://doi.org/10.5281/zenodo.4731529.

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In modern times reinforced concrete, composite concrete, is made. It has been used successfully to build its outstanding flexural strength, resistance, impact resistance and strength and frost resistance. It is an effective way to increase durability, shock resistance and cracking of plastic cement cracks. Fiber is added as a reinforcement material with some characteristic features. They can be round, triangular or flat in the cross section. Fiber is usually defined by simple parameters called-- factor ratio. Fiber feature measurement is its length and its back size. The main reason for insert

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Woju, Utino Worabo, and A. S. Balu. "Time-dependent safety performance of reinforced concrete structures." Journal of Engineering, Design and Technology 18, no. 5 (2020): 1103–20. http://dx.doi.org/10.1108/jedt-08-2019-0218.

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Purpose Performance of the structure depends on design, construction, environment, utilization and reliability aspects. Other factors can be controlled by adopting proper design and construction techniques, but the environmental factors are difficult to control. Hence, mostly in practice, the environmental factors are not considered in the analysis and design appropriately; however, their impact on the performance of the structures is significant along with the design life. It is in this light that this paper aims to perform the time-dependent performance analysis of reinforced concrete struct

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Wang, Hai Chao, Zhen Tian Xu, and Wen Ting Liu. "The Creep Impact on the Performance of Super-Long Reinforced Concrete Structures." Advanced Materials Research 790 (September 2013): 291–94. http://dx.doi.org/10.4028/www.scientific.net/amr.790.291.

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In order to study the deformation of super-long structures under the influence of creep , take fully advantage of orthogonal design to make nine series reinforced concrete beams of shrinkage-compensating to deeply analyze the function performanced by creep of the reinforced concrete structure and obtain that the time-deflection curves of volume deformation and creep deformation of shrinkage-compensating reinforced concrete beams. The results show that the creep of beams develops rapidly early and the slow development of the late. The greater the expansion stress is in the early, the greater th

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Tyurina, Vasilina, Anton Chepurnenko, and Vladimir Akopyan. "Prediction of Thermal Cracking During Construction of Massive Monolithic Structures." Applied Sciences 15, no. 3 (2025): 1499. https://doi.org/10.3390/app15031499.

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The problem of early crack formation caused by temperature stresses in hardening concrete is very relevant for massive monolithic reinforced concrete structures. The aim of the work is to develop a method for thermal cracking risk prediction during the construction of massive monolithic reinforced concrete structures. The innovation of the research consists in taking into account the dependence of the concrete elastic modulus and strength on the time and temperature of hardening. The significance of the study lies in analysis of methods for reducing the risk of early cracking using the example

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Verma, Sanjeev Kumar, Sudhir Singh Bhadauria, and Saleem Akhtar. "Monitoring Corrosion of Steel Bars in Reinforced Concrete Structures." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/957904.

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Corrosion of steel bars embedded in reinforced concrete (RC) structures reduces the service life and durability of structures causing early failure of structure, which costs significantly for inspection and maintenance of deteriorating structures. Hence, monitoring of reinforcement corrosion is of significant importance for preventing premature failure of structures. This paper attempts to present the importance of monitoring reinforcement corrosion and describes the different methods for evaluating the corrosion state of RC structures, especially hal-cell potential (HCP) method. This paper al

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Bassil, Antoine, Xin Wang, Xavier Chapeleau, Ernst Niederleithinger, Odile Abraham, and Dominique Leduc. "Distributed Fiber Optics Sensing and Coda Wave Interferometry Techniques for Damage Monitoring in Concrete Structures." Sensors 19, no. 2 (2019): 356. http://dx.doi.org/10.3390/s19020356.

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The assessment of Coda Wave Interferometry (CWI) and Distributed Fiber Optics Sensing (DFOS) techniques for the detection of damages in a laboratory size reinforced concrete beam is presented in this paper. The sensitivity of these two novel techniques to micro cracks is discussed and compared to standard traditional sensors. Moreover, the capacity of a DFOS technique to localize cracks and quantify crack openings is also assessed. The results show that the implementation of CWI and DFOS techniques allow the detection of early subtle changes in reinforced concrete structures until crack format

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Chen, Chen, Kai Zhang, and Lin Ye. "Influence of Freeze–Thaw Cycles and Sustained Load on the Durability and Bearing Capacity of Reinforced Concrete Columns." Materials 17, no. 24 (2024): 6129. https://doi.org/10.3390/ma17246129.

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The deterioration of concrete structures is mainly due to the combined action of the environment and external load. In this study, 32 reinforced concrete columns were prepared to evaluate the coupling actions on the properties of reinforced concrete structures. The durability, bearing capacity, and failure mode of reinforced concrete columns were investigated under the combined action of freeze–thaw (F–T) cycles, sustained load, and salt corrosion (water or composite salt solution). Results show that the mass fluctuation of reinforced concrete columns under a sustained load was more obvious du

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Jiang, Zaiyang, Shucheng Jin, and Wenyuan Xu. "Durability Investigation of Fiber-Reinforced Functionally Graded Concretes in Cold Regions." Applied Sciences 12, no. 13 (2022): 6651. http://dx.doi.org/10.3390/app12136651.

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Introducing the differential design concept of functional gradient into mass concrete structures is a feasible design concept that can meet the requirement of crack resistance and internal hydration heat reduction for mass concrete in cold regions. This study analyzed functionally graded concrete’s long-term performance and durability behavior through experimental tests. Based on various concrete mix proportion designs, six concrete groups were selected to test. The shrinkage performance tests were conducted according to the specifications, and early crack resistance tests were also carried ou

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I.V. Dmitrieva. "The formation and development of industrial architecture in Central Asia (late XIX - early XX centuries)." Journal of Information Systems Engineering and Management 10, no. 33s (2025): 655–66. https://doi.org/10.52783/jisem.v10i33s.5573.

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This article describes the introduction of new, more advanced materials and structures in the architecture of industrial, public buildings and bridges in Central Asia. This did not result in the replacement of one technique or structural element, but in the renewal of the entire architecture of the period. One of these materials was iron and concrete. New structures such as metal domes, reinforced concrete frames and metal structures appeared. The use of metal structures is considered using industrial buildings built in Tashkent as an example. Structural systems were first used in industrial a

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Sprince, Andina, and Leonids Pakrastinsh. "Case Study on Early Age Shrinkage of Cement-based Composites." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 2 (August 8, 2015): 79. http://dx.doi.org/10.17770/etr2013vol2.863.

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The aim of this paper was to study the behaviour of new high-performance fibre-reinforced cement composite materials (FRCC) that are reinforced with polyvinyl alcohol (PVA) fibres. The shrinkage deformations at early age, the compressive strength and modulus of elasticity of the new compositions had been determined. Test results shows that the addition of PVA fiber 1.10% and 0.55% by weight of the cement has negligible influence on concrete drying shrinkage, however, it is affect the concrete plastic and autogenous shrinkage. The results of the experiments permitted the prediction of long-term

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Tu Anh, Do, Ha Luan Minh, Nguyen Quang Thac, Tran Tam Duc, and Tham Thang Quoc. "Evaluation of methods for analyzing early-age cracking risk in concrete walls of tunnel structures." Transport and Communications Science Journal 71, no. 7 (2020): 746–59. http://dx.doi.org/10.25073/tcsj.71.7.2.

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This paper is concentrated on investigating the modern methods to evaluate the probability of cracking in urban tunnel structures during construction. The study considers the current standard methods for assessing reinforced concrete walls of an urban tunnel, which experienced early-age cracking. The results obtained using guidelines were compared with actual observations of crack widths in the urban tunnel wall. Examples of using specifications in wall design were also described. The proper method is highlighted with suggestions for a possible path for considering early-age thermal and shrink

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Tu Anh, Do, Ha Luan Minh, Nguyen Quang Thac, Tran Tam Duc, and Tham Thang Quoc. "Evaluation of methods for analyzing early-age cracking risk in concrete walls of tunnel structures." Transport and Communications Science Journal 71, no. 7 (2020): 746–59. http://dx.doi.org/10.47869/tcsj.71.7.2.

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This paper is concentrated on investigating the modern methods to evaluate the probability of cracking in urban tunnel structures during construction. The study considers the current standard methods for assessing reinforced concrete walls of an urban tunnel, which experienced early-age cracking. The results obtained using guidelines were compared with actual observations of crack widths in the urban tunnel wall. Examples of using specifications in wall design were also described. The proper method is highlighted with suggestions for a possible path for considering early-age thermal and shrink

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Pshenichkina, V., B. Gricenko, A. Gluhov, and Babovich Miodrag. "RELIABILITY OF REINFORCED CONCRETE STRUCTURES TAKING INTO ACCOUNT THE CONCRETE CREEP FACTOR." Construction Materials and Products 3, no. 6 (2021): 35–43. http://dx.doi.org/10.34031/2618-7183-2020-3-6-35-43.

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In the process of inspection of reinforced concrete structures being in long-term service, deflections of beams and slabs beyond the standard values are often detected, which is attributable to concrete creep occurring in the case of the early dismantling of shuttering. At the same time, any visual signs of their reduced load-bearing capacity are absent. Taking into account the high degree of uncertainty of the factors influencing the long-term strains of the concrete, the safe service life of such structures can vary within a rather wide range, and its actual value can be assessed only throug

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Khakimova, Evelina, H. Celik Ozyildirim, and Devin K. Harris. "Investigation of Properties of High-Performance Fiber-Reinforced Concrete: Very Early Strength, Toughness, Permeability, and Fiber Distribution." Transportation Research Record: Journal of the Transportation Research Board 2629, no. 1 (2017): 73–82. http://dx.doi.org/10.3141/2629-10.

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Concrete cracking, high permeability, and leaking joints allow harmful solutions to intrude into concrete, resulting in concrete deterioration and corrosion of reinforcement. The development of durable concrete with limited cracking is a potential solution for extending the service life of concrete structures. Optimal design of very early strength (VES) durable materials will facilitate rapid and effective repairs and thus reduce traffic interruptions and maintenance work. The purpose of this study was to develop low-cracking durable materials that could achieve a very early compressive streng

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Taffese, Woubishet Zewdu, and Ethiopia Nigussie. "Autonomous Corrosion Assessment of Reinforced Concrete Structures: Feasibility Study." Sensors 20, no. 23 (2020): 6825. http://dx.doi.org/10.3390/s20236825.

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In this work, technological feasibility of autonomous corrosion assessment of reinforced concrete structures is studied. Corrosion of reinforcement bars (rebar), induced by carbonation or chloride penetration, is one of the leading causes for deterioration of concrete structures throughout the globe. Continuous nondestructive in-service monitoring of carbonation through pH and chloride ion (Cl−) concentration in concrete is indispensable for early detection of corrosion and making appropriate decisions, which ultimately make the lifecycle management of RC structures optimal from resources and

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Jin, Hui, Qing Chun, Chengwen Zhang, and Yidan Han. "A Durability Prediction Method for Historical Square Rebar Reinforced Concrete Buildings." Applied Sciences 11, no. 24 (2021): 11737. http://dx.doi.org/10.3390/app112411737.

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Square rebars were developed and used for decades in the early development of reinforced concrete (RC) structures; however, the objectives of modern concrete structure durability analyses and standards are centered on round rebars in past decades, which are not suited for RC buildings utilizing square rebars. Considering the absence of proper evaluation techniques to evaluate the square rebar RC structures’ durability accurately, a novel durability prediction method has been proposed for this type of historical building. The method is based on major parts as in-situ investigation, finite eleme

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Miao, Xiao Yu, She Liang Wang, and Yu Jiang Fan. "Study on Damage Identification for Reinforced Concrete Structures Based on Wavelet Transform." Applied Mechanics and Materials 94-96 (September 2011): 1505–10. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1505.

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Reinforced concrete structures are prone to damage during their service lifetime caused by factors such as the effect of overload, ground motions, and other actions. Undetected damage may lead to structural failures. Early detection of damage and timely repairs can prevent catastrophic failure and ensure regular service of structures. As a result, a so-called delimitation wavelet-transform search method, based on the characteristic of multi-resolution of wavelet transform, is presented in this paper for on-line damage identification of reinforced concrete structures. One possible advantage of

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Rathod, Swatej. "A Comparative Study of Bamboo Reinforced Vs Steel Reinforced Concrete Structure." International Journal for Research in Applied Science and Engineering Technology 10, no. 12 (2022): 973–76. http://dx.doi.org/10.22214/ijraset.2022.48070.

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Abstract: The building industry is the leading consumer of energy and materials in the majority of nations. Concrete is strong in compression but weak in tensile strength. To obtain tensile strength, steel is added as reinforcement in concrete. Bamboo has a high compressive and tensile strength. As a result, the use of bamboo as a structural building material is gaining popularity, Bamboo is one of the oldest building materials on the planet. Bamboo is been used for bridges, scaffolding, dwellings, and other temporary structures from early times. This review paper is a theoretical demonstratio

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Wojtowicz, Anna, Jarosław Michałek, and Andrzej Ubysz. "Range of dynamic impact of geotechnical works on reinforced concrete structures." E3S Web of Conferences 97 (2019): 03026. http://dx.doi.org/10.1051/e3sconf/20199703026.

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Impact of geotechnical works related to plunging piles in the ground and modification of the condition of the soil foundation for concrete in the early stage of its bonding, and influence on adhesion of reinforcing steel to concrete can determinate the target capacity of a reinforced concrete structure. Impact of vibrations testing on bond strength is only possible on real designs or models subjected to dynamic impact. The paper presents mechanisms of adherence reduction caused by relative displacement of reinforcing steel and concrete. Moreover, dynamic influences (frequencies and vibration v

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Savytskyi, M. V., T. D. NIKIFOROVA, and M. O. FROLOV. "STRESS-DEFORMED STATE OF STEEL-REINFORCED CONCRETE STRUCTURES OF FLOORS AT THE STAGE OF ESTABLISHMENT OF STRUCTURES." Ukrainian Journal of Civil Engineering and Architecture, no. 3 (June 1, 2021): 101–6. http://dx.doi.org/10.30838/j.bpsacea.2312.010721.101.772.

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Formulation of the problem. Many structures today require floor structures to meet increased requirements for strength, span coverage and surface quality. Steelcrete structures often fit the bill. However, despite a long history of success, the industry is still not fully understood, in particular, the behavior of this structure in the early stages of construction is not unambiguous. Due to the impossibility of creating a composite section, various effects and a complex stress-strain state immediately arise in the time interval between the combination of different materials in space and the co

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Lobo, R. F., J. M. Bracci, K. L. Shen, A. M. Reinhorn, and T. T. Soong. "Inelastic Response of R/C Structures with Viscoelastic Braces." Earthquake Spectra 9, no. 3 (1993): 419–46. http://dx.doi.org/10.1193/1.1585723.

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The addition of viscoelastic braces in structures for vibration reduction has been proposed and implemented in the past decade in metal scaled models of full-scale structures. Viscoelastic braces can provide energy dissipation, while the structure remains elastic. In reinforced concrete structures, the seismic response is usually inelastic, which is often accompanied by permanent deformations and damage. The addition of viscoelastic dampers can dissipate energy at the early stages of cracking of the concrete elements and reduce the development of damage. With proper selection of dampers, this

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Ding, Zhu, Zhan Xi Lu, and Yuan Li. "Feasibility of Basalt Fiber Reinforced Inorganic Adhesive for Concrete Strengtening." Advanced Materials Research 287-290 (July 2011): 1197–200. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.1197.

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Phosphate based binders are high early strength materials with a short setting time. Usually, they are used as rapid repair material for concrete structures. The feasibility of a basalt fiber reinforced inorganic binder for strengthening concrete was studied. We successfully compounded suitable phosphate binder (PB) for concrete strengthening. In the current paper, phosphate binder was to adjusted to has excellent workability, suitable setting time and fluidity. Compressive strength of phosphate binder mortar, bonding strength between PB and Portland cement mortar, and strengthening effect of

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Ali, Ashti Sedeeq, Serwan Khorsheed Rafiq, and Dr Ferhad Rahim Karim. "Flexural Strengthening of Normal Strength Plain Concrete Beams using Ultra-High Performance Fiber Reinforced Concrete Strips." CONSTRUCTION 2, no. 1 (2022): 136–43. http://dx.doi.org/10.15282/construction.v2i1.7712.

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In recent years, the strengthening of reinforced concrete elements in existing structures has become a very important interest topic because of the demand for development structures and extending their service life. Since the ultra-high-performance fiber-reinforced concrete properties in terms of durability and strength are fully exploited, it became early in the rehabilitation and strengthening field. This paper highlights the flexural behavior of small-scale plain normal strength concrete beam strengthened in flexure by ultra-high performance fiber reinforced concrete strips at the tensile s

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Žiogas, Vigantas Antanas, Svajūnas Juočiūnas, Violeta Medelienė, and Giedrius Žiogas. "CONCRETING AND EARLY HARDENING PROCESSES IN MONOLITHIC REINFORCED CONCRETE STRUCTURES / PROCESAI, VYKSTANTYS BETONAVIMO IR PRADINIO KIETĖJIMO METU GELŽBETONINĖSE MONOLITINĖSE KONSTRUKCIJOSE." Engineering Structures and Technologies 4, no. 2 (2012): 67–75. http://dx.doi.org/10.3846/2029882x.2012.699258.

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The exploitation time and reliability of monolithic reinforced concrete structures largely depend on concreting technology and process influence during concreting and early setting stages. Different types of cracks in monolithic reinforced concrete structures appear due to internal and external effects. Cracks appear when the technology of structure concreting is damaged, when formwork is removed during the further setting and structures loaded period. In order to avoid micro and macro cracks in monolithic structures, it is important to measure the particular setting time moment and technologi

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Strangfeld, Christoph, Sergej Johann, and Matthias Bartholmai. "Smart RFID Sensors Embedded in Building Structures for Early Damage Detection and Long-Term Monitoring." Sensors 19, no. 24 (2019): 5514. http://dx.doi.org/10.3390/s19245514.

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In civil engineering, many structures are made of reinforced concrete. Most degradation processes relevant to this material, e.g., corrosion, are related to an increased level of material moisture. Therefore, moisture monitoring in reinforced concrete is regarded as a crucial method for structural health monitoring. In this study, passive radio frequency identification (RFID)-based sensors are embedded into the concrete. They are well suited for long-term operation over decades and are well protected against harsh environmental conditions. The energy supply and the data transfer of the humidit

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Tur, V. V., and V. H. Sannikava. "Early-age strains and stresses in bi-axially restrained expansive concrete elements." IOP Conference Series: Materials Science and Engineering 1252, no. 1 (2022): 012028. http://dx.doi.org/10.1088/1757-899x/1252/1/012028.

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Abstract Practical application of expansive concretes in reinforced concrete structures needs the rational design model for assessment the early-age stress-strain parameters of self-stressing concrete elements under any restraint conditions during the expansion stage. Various strategies are used to calculate the restrained expansion strains and self-stresses but, in most cases, disregarding the elastic-plastic behaviour of expansive concrete at early ages. It’s noticeable that in case of bi-axial restraint conditions both the elastic-plastic parameters of expansive concrete and the influence o

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Pulyaev, I., and S. Pulyaev. "Experience of Using Self-Compacting Concrete Mixes in Transport Construction." Materials Science Forum 992 (May 2020): 135–42. http://dx.doi.org/10.4028/www.scientific.net/msf.992.135.

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The creation of self-compacting concrete (SCC) is associated with the introduction of plasticizing additives based on polycarboxylate esters (PCE). The first patent for a group of substances proposed for use as superplasticizers for concrete, was declared in the early 80-ies of the last century in Japan. In the mid 90-ies superplasticizers based on esters of polycarboxylates began to be used in Europe. In Russia, the use of self-compacting concrete began much later, and in bridge and tunnel construction almost a few years ago. Currently, in the European Union, 70-80% of reinforced concrete str

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K., Sree Sandhya, Rajamurugadoss Dr., and G. Ganesh Prabhu Dr. "A Review Paper on Steel Fibre Reinforced Concrete." International Journal of Trend in Scientific Research and Development 3, no. 6 (2019): 530–32. https://doi.org/10.5281/zenodo.3588662.

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Generally, adding of steel fibres in concrete improves the significance of the concrete mix and it also reduces the workability of the concrete. Steel fibre reinforced concrete SFRC is a Composite material which is made up of hydraulic cements. It contains coarse and fine aggregate. Since, cement having well compressive and steel having tensile strength it is capable of resisting wind and earthquake forces. Although reinforcing brittle materials with fibres is not a new concept, it was started in the early 1960s. Steel fibres added to concrete, steel fibre reinforced concrete SFRC is formed wh

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Lv, Wenjuan, Baodong Liu, Ming Li, Lin Li, and Pengyuan Zhang. "Experimental Study on the Effect of Moisture Content on Hysteretic Behavior of Reinforced Concrete Columns." Open Civil Engineering Journal 12, no. 1 (2018): 47–61. http://dx.doi.org/10.2174/1874149501812010047.

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Background: For reinforced concrete structures under different humid conditions, the mechanical properties of concrete are significantly affected by the moisture content, which may result in a great change of the functional performance and bearing capacity. Objective: This paper presents an experiment to investigate the influence of the moisture content on the dynamic characteristics and hysteretic behavior of reinforced concrete column. Results: The results show that the natural frequency of reinforced concrete columns increases quickly at an early stage of immersion, but there is little chan

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Lacarriere, Laurie, Alain Sellier, Pierre Souyris, Batian Kolani, and Ponleu Chhun. "Numerical prediction of cracking risk of reinforced concrete structures at early age." RILEM Technical Letters 5 (September 24, 2020): 41–55. http://dx.doi.org/10.21809/rilemtechlett.2020.106.

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The paper presents a summary of the work concerning the prediction of cracking risk in reinforced concrete structures at early age that has been carried out by our team at the LMDC laboratory during the last ten years. It focuses on the principles that must be taken into account in numerical simulations (evolution of characteristics, behaviour law, numerical implementation, effect of reinforcement, etc.) in order to be able to predict the cracking pattern caused in structures by the thermal loading induced by hydration at early ages

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Polat, H. I. "A Classification Study on the Development Stages of Construction Technologies in Turkey." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 1909–13. https://doi.org/10.5281/zenodo.1037160.

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Developmental stages of construction technologies in Turkey followed various methods and showed differences in practice up to 20th century when the first examples of early-period reinforced concrete structures was created. Following the late 18th century, when traditional construction techniques were applied to new masses and building types, the use of modern bricks in vertical carrier elements together with the means of the 19th century was followed by an increase in masonry construction types of building structures. The paper emphasizes in the effects of traditional construction techniques a

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Yao, Zhishu, Xiang Li, Taoli Wu, Long Yang, and Xiaohu Liu. "Hybrid-Fiber-Reinforced Concrete Used in Frozen Shaft Lining Structure in Coal Mines." Materials 12, no. 23 (2019): 3988. http://dx.doi.org/10.3390/ma12233988.

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To address the cracking and leaking of concrete in frozen shaft linings in deep and thick topsoil layers in coal mines, hybrid-fiber-reinforced concrete (HFRC) was developed. First, the composition of the reference concrete was obtained by investigating high-strength concrete commonly used in shaft linings, and two dosages of polyvinyl alcohol fiber (PVAF) and polypropylene plastic steel fiber (PPSF) were obtained by the mixing test. Then, tests of early cracks of concrete were conducted; results showed that HFRC could almost avoid early cracks, exhibiting an advantage in early crack resistanc

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Ali, Ashti Sedeeq, Assist Prof Dr Serwan Khorsheed Rafiq, and Dr Ferhad Rahim Karim. "Enhancement of the Punching Shear Resistance in the Normal Concrete Flat Slabs using Different Patterns of the Ultra-High Performance Fiber Reinforced Concrete Strips." CONSTRUCTION 2, no. 1 (2022): 88–102. http://dx.doi.org/10.15282/construction.v2i1.7583.

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In the last few years, the flat slab system has become widespread for constructing multi-story buildings in many countries due to its simplicity and fast construction. However, the demand for the strengthening of reinforced concrete is a critical element in existing structures due to design or construction errors, and changes in the building function become a challenging area to develop and extend the durability of structures. In the reinforced concrete structure, flat slabs are the most critical element that requires strengthening because of exhibition punching shear failure. There are many m

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Cong, Shu Ping, Jin Sheng Han, and Shu Ting Liang. "Investigating Vertical Load Distribution and Shoring Systems of Reinforced Concrete Buildings during Construction." Advanced Materials Research 163-167 (December 2010): 1369–74. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1369.

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The loads of reinforced concrete buildings are bore by shores and early age concrete members during construction. In order to analysis the distribution of vertical load between concrete members and shores, the approximate method was developed based on the finite element method and simplified method. According to the process of construction, seven primary structures were brought forward in the approximate method. The coefficients of vertical load distribution between concrete members and shores are confirmed through the finite element method. The loads of concrete members and shores could be ob

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Sounthararajan, V. M., and A. Sivakumar. "Corrosion Measurements in Reinforced Fly Ash Concrete Containing Steel Fibres Using Strain Gauge Technique." International Journal of Corrosion 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/724194.

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Corrosion of steel bars in concrete is a serious problem leading to phenomenal volume expansion and thereby leading to cover concrete spalling. It is well known that the reinforced concrete structures subjected to chloride attack during its service life cause these detrimental effects. The early detection of this damage potential can extend the service life of concrete. This study reports the comprehensive experimental studies conducted on the identification of corrosion mechanism in different types of reinforced concrete containing class-F fly ash and hooked steel fibres. Fly ash replaced con

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Bondar, I. S., M. Ya Kvashnin, and D. T. Aldekeeva. "Stress-Strain State of Reinforced Concrete Overpass under Load." World of Transport and Transportation 18, no. 2 (2020): 68–81. http://dx.doi.org/10.30932/1992-3252-2020-18-68-81.

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Beam spans are the most vulnerable elements of the bridge system, as they are exposed to direct effects of mobile load, environmental and climatic factors (temperature and humidity effects, including freezing and thawing, shrinkage, humidity, etc.). Appearance of defects of the structure is inevitable; the refore civil engineers face a topical problem of strengthening of damaged structures of bridges. The article discusses some results of calculated values and instrumental measurements of stress-strain state (SSS) of reinforced concrete beam span structures of railway overpass under operationa

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Kliukas, Romualdas, Arūnas Jaras, and Ona Lukoševičienė. "Reinforced Spun Concrete Poles—Case Study of Using Chemical Admixtures." Materials 13, no. 2 (2020): 302. http://dx.doi.org/10.3390/ma13020302.

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The current research paper is focused on the experimental investigation of features of chemical admixtures (superplasticizers C-3, ‘Dofen’ and formaldehyde resin ACF-3M) utilizing in reinforced spun concrete structures. For the sake of comparison, the results of studying the effects of chemical admixtures on physical and mechanical properties on vibrated and spun concrete are provided. As a separate part of spun concrete products, the supporting poles of overhead power lines are introduced. The results obtained indicate, that the positive effect of chemical admixtures for spun and vibrated con

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Huang, Min. "Analysis and Research of the Ductility Performance of the Steel Reinforced Concrete Structure Based on the Filling Technology." Applied Mechanics and Materials 273 (January 2013): 492–95. http://dx.doi.org/10.4028/www.scientific.net/amm.273.492.

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At present the reinforced concrete structure is one of the structures widely used. With China's rapid economic development and the improvement of people's living standard, the structural safety requirements are also getting higher and higher. Especially in the design in the structure of the modern housing, the ductility performance of the steel reinforced concrete structure becomes more and more important. This paper put forward the design basis aiming to study the steel structure ductility design, preventing early damage of the member in the role of the earthquake, and avoiding structure syst

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Nesvetaev, G. V., and Yu I. Koryanova. "Forecasting the Strength Gaining Kinetics of the Concrete Hardening in the Abnormal Conditions." Modern Trends in Construction, Urban and Territorial Planning 2, no. 4 (2023): 59–68. http://dx.doi.org/10.23947/2949-1835-2023-2-4-59-68.

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Introduction. During construction of the massive monolithic reinforced concrete structures, concrete hardening takes place in the unsteady abnormal temperature conditions, which, along with the massiveness of the structure and concrete recipe features, influence significantly on the concrete strength gaining kinetics. The non-homogeneity of the temperature field leads to the difference of the hardening concrete strength and deformation indicators in the different points of a structure at one and the same time, eventually resulting in formation of the non-homogeneous stress field. Due to the in

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Sánchez Montero, Javier, Pascual Saura Gómez, Julio Emilio Torres Martín, Servando Chinchón-Payá, and Nuria Rebolledo Ramos. "Variation of Corrosion Rate, Vcorr, during the Carbonation-Induced Corrosion Propagation Period in Reinforced Concrete Elements." Materials 17, no. 1 (2023): 101. http://dx.doi.org/10.3390/ma17010101.

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The structural systems of residential buildings in many developed countries have widely utilized reinforced concrete as the most common solution in construction systems since the early 20th century. The durability of reinforced concrete columns and beams is compromised, in most cases, by pathologies caused by the corrosion of their reinforcements. This study analyses the corrosion processes induced by carbonation in 25 buildings with reinforced concrete structures. The models estimate the service life of reinforced concrete elements by differentiating between the initiation period and the prop

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Ipsita Samal, Et al. "Crack Localization and Detection in Small-Scale Reinforced Concrete Beams With Smart Technology." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 10 (2023): 2225–30. http://dx.doi.org/10.17762/ijritcc.v11i10.8923.

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Reinforced concrete structures form the backbone of modern civil engineering, yet the emergence of cracks poses a significant challenge to their long-term integrity. The integration of smart sensors and data analytics further augments precision by enabling real-time data collection and analysis, allowing for early intervention. Continuous monitoring, facilitated by remote sensing and wireless communication, ensures a dynamic understanding of crack propagation. To validate the proposed approach, an experimental campaign was conducted using reinforced concrete beams. Three point bending tests we

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