Article
Engineering, Geological
Narges Azadvar, Mojdeh Zargaran, Fayaz Rahimzadeh Rofooei, Nader K. A. Attari
Summary: The seven half-scale reinforced concrete columns were studied under combined axial and lateral cyclic loading. Three specimens were strengthened with CFRP and GFRP sheets, while other specimens were strengthened with textile mesh TRC. The TRC specimens showed better performance with higher dissipated energy, effective yield strength, and effective stiffness compared to the specimens strengthened with FRP sheets.
BULLETIN OF EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Mechanical
Ismail Hakki Tarhan, Habib Uysal
Summary: This study aimed to determine the effect of optimal reinforcement arrangements on masonry vaults. Numerical models were created and validated to compare the effectiveness of different strengthening procedures using carbon or glass fibre-reinforced fabric materials. Results showed that the intrados was more effective than the extrados, and carbon fibre-reinforced fabric material was generally more effective than glass fibre-reinforced fabric material. The research demonstrates the possibility of achieving high efficacy with significantly less material and provides practical suggestions.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Construction & Building Technology
Turgay Cosgun, Oguz Uzdil, Baris Sayin, Kamil Kerem Zengin
Summary: This paper presents an approach to assess the seismic performance of masonry structures using linear, nonlinear, and kinematic limit analyses, and proposes a retrofitting proposal using fiber-reinforced polymer composites. By examining and strengthening a masonry restaurant building, it is found that the structural strength is insufficient, leading to the proposal of a strengthening design.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Civil
Edoardo Rossi, Norbert Randl, Peter Harsanyi, Tamas Meszoly
Summary: Textile Reinforced Concrete (TRC) and Fibre/Textile Reinforced Concrete (F/TRC) are effective solutions for strengthening Reinforced Concrete (RC) structures. F/TRC materials, which involve the addition of short dispersed fibres to the cementitious matrix, can significantly improve performance compared to normal TRC.
ENGINEERING STRUCTURES
(2022)
Article
Chemistry, Physical
Marianovella Leone, Maria Antonietta Aiello
Summary: This paper discusses the use of Fiber-Reinforced Polymers (FRP) for strengthening existing buildings, analyzes the impact of various parameters on the bond behavior of the strengthening system, and provides a detailed discussion of the results of shear tests conducted on different types of masonry substrates and FRP reinforcements.
Article
Construction & Building Technology
Redouan El Ghadioui, Juliane Wagner, Jonas Klein, Tilo Proske, Manfred Curbach, Carl-Alexander Graubner
Summary: This article presents experimental and theoretical investigations on the structural behavior of RC members strengthened with externally applied CFRP reinforcement, showing that the load-bearing capacity is not influenced by previous loading and there is good agreement between calculations and experimental data.
STRUCTURAL CONCRETE
(2022)
Article
Engineering, Civil
Jun-Jie Zeng, Qi-Jin Liang, Wei-Jian Cai, JinJing Liao, Jie-Kai Zhou, Jiong-Yi Zhu, Lihai Zhang
Summary: This paper proposes and validates a novel column strengthening technique incorporating section curvilinearization (SC) using ultra-high performance engineered cementitious composites (UHP-ECC) and fiber-reinforced polymer (FRP) confinement. Eleven large-scaled FRP-confined square reinforced concrete (RC) columns with SC using UHP-ECC as the additive material were prepared and tested. The main parameters investigated in this paper included the FRP thickness, the rise-to-span ratio, and the strength of the additive concrete. Test results show that the SC technique with FRP jacketing and UHP-ECC as the additive material enhances the load-bearing capacity of the RC columns by 52% with a 17% section increment. By assessing the existing design-oriented stress-strain models of confined concrete in curvilinearized square columns (CSCs) using the test results obtained in this study, it reveals that the current models could underestimate the ultimate strength of the confined concrete in CSCs with a two-layer FRP wrap, and therefore further research on the improvement on the stress-strain model of confined concrete in CSCs becomes necessary.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Maidiawati, Jafril Tanjung, Fadzli Mohamed Nazri, Yulia Hayati, Masrilayanti
Summary: A series of structural tests were conducted to examine the seismic performance of masonry infills strengthened with particular materials on reinforced concrete frame structures. The experimental results showed that most specimens exhibited an increase in their lateral strength, secant stiffness, deformation capacity, and energy dissipation. Among all prepared specimens, the specimen using plastic stretch film showed the best and most promising results, suggesting its potential for increasing ductility performance.
Article
Engineering, Civil
Cao Thanh Ngoc Tran, Xuan Huy Nguyen, Huy Cuong Nguyen, Dang Dung Le
Summary: The experimental program investigates the shear performance of short-span GFRP bar-reinforced concrete beams strengthened with CFRP laminates or TRC. Both CFRP and TRC schemes enhance the shear strengths of the tested beams, with the number of textile layers slightly affecting the results due to the control of failure by the crushing of concrete struts in short-span beams.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Alessio Cascardi, Francesco Micelli, Maria Antonietta Aiello
Summary: This research proposes an innovative construction method for strengthening existing arches to prevent collapse under static or seismic force. The method utilizes fiber-reinforced polymer (FRP) to connect the blocks that form the arch. Experimental results demonstrate that the novel technique significantly enhances the loadbearing capacity compared to traditional reinforced arches.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2023)
Article
Construction & Building Technology
Lei Jing, Shiping Yin, Farhad Aslani
Summary: The study demonstrated the effectiveness of textile-reinforced concrete (TRC) in strengthening masonry structures, proposing prediction formulas for compressive strength and ultimate strain. TRC-confined masonry columns showed improved ductile behavior and carrying capacity, with carbon-glass TRC showing more prominent effects than basalt-glass TRC.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Mechanics
R. Kotynia, E. Oller, A. Mari, M. Kaszubska
Summary: This paper investigates the shear capacity of RC beams strengthened with EB FRP composites based on existing tests. The study aims to provide a comprehensive overview of different strengthening configurations and failure modes observed in experimental tests, as well as analyze the influence of various parameters on strengthening efficiency.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Geological
Mattia Zizi, Francesco Campitiello, Gianfranco De Matteis
Summary: The current research focuses on investigating the efficiency of a steel-based reinforcement system suitable for existing masonry walls through numerical and analytical studies. By conducting experimental tests and numerical simulations, a design criterion has been proposed demonstrating that the strength increase achievable by adopting this reinforcement system can be comparable to that of a new construction masonry wall.
BULLETIN OF EARTHQUAKE ENGINEERING
(2021)
Article
Mechanics
S. S. Zhang, M. J. Jedrzejko, Y. Ke, T. Yu, X. F. Nie
Summary: The high efficiency of using the near-surface mounted (NSM) fiber-reinforced polymer (FRP) technique to improve the shear capacities of reinforced concrete (RC) beams has been proven by numerous studies. However, premature debonding failures such as interfacial debonding and concrete cover separation are often observed in RC beams strengthened with NSM FRP, which significantly limits the utilization of FRP strength. This paper proposes a novel FRP anchor for NSM FRP shear-strengthened beams and carries out a test program to investigate its effectiveness. The test results show that the proposed FRP anchor can mitigate or prevent debonding failures and significantly enhance the load-carrying and deformation capacities of RC beams strengthened with NSM FRP strips.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Ali Raji, Davood Mostofinejad, Mohammad Reza Eftekhar
Summary: This study presents an innovative method of strengthening masonry walls using high tensile strength steel parallel wires. The findings demonstrate that the specimens reinforced by this method show the best performance in terms of load-bearing capacity and energy absorption. Additionally, the grooving method enhances the strength of the walls by transferring the tensile stress and changing the failure mechanism.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Mechanics
Thi-Loan Bui, A. Si Larbi, N. Reboul, E. Ferrier
COMPOSITE STRUCTURES
(2015)
Article
Materials Science, Composites
L. Bui, N. Reboul, A. Si Larbi, E. Ferrier
JOURNAL OF COMPOSITE MATERIALS
(2017)
Article
Engineering, Multidisciplinary
Nadege Reboul, Amir Si Larbi, Emmanuel Ferrier
COMPOSITES PART B-ENGINEERING
(2018)
Article
Construction & Building Technology
Ibrahim Alachek, Nadege Reboul, Bruno Jurkiewiez
CONSTRUCTION AND BUILDING MATERIALS
(2018)
Article
Computer Science, Interdisciplinary Applications
N. Reboul, E. Vincens, B. Cambou
COMPUTERS AND GEOTECHNICS
(2010)
Article
Materials Science, Multidisciplinary
Nadege Reboul, Eric Vincens, Bernard Cambou
Article
Mechanics
Ibrahim Alachek, Nadege Reboul, Bruno Jurkiewiez
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Chemical
Ibrahim Alachek, Nadege Reboul, Bruno Jurkiewiez
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2020)
Article
Construction & Building Technology
N. Reboul, C. Grazide, N. Roy, E. Ferrier
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Materials Science, Composites
Thi-Loan Bui, Zakaria Ilyes Djamai, A. Si Larbi, N. Reboul, E. Ferrier
Summary: The study focuses on different approaches for modeling the behavior of masonry walls strengthened with FRPs and TRCs. While the heterogeneous approach is deemed appropriate for modeling TRC reinforcement, constitutive laws obtained through direct uniaxial Charcterization are insufficient to represent the overall behavior of TRC reinforced masonry. The axial stiffness of reinforcement and the compressive strength of the masonry substrate govern the overall behavior of walls reinforced with FRPs/TRCs.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Engineering, Manufacturing
Mohamed Saidi, Nadege Reboul, Aron Gabor
Summary: This paper presents an experimental study on the local and global mechanical behaviors of textile-reinforced cementitious matrix composites (TRCs) under cyclic loading, testing two configurations and three loading modes. Fiber optic sensors were used to study local behavior at the textile/matrix interface, while digital image correlation technique assessed crack width evolution.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Construction & Building Technology
N. Reboul, M. Saidi, A. Gabor
Summary: The study investigates the tensile behavior of textile reinforced cementitious matrix composites (TRC) using acoustic emission monitoring and pattern recognition techniques. It reveals that the local behavior of TRC is reflected in acoustic activity, and AE offers valuable information about damage processes in TRC composites.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)