Article
Construction & Building Technology
Chong Chen, Xihong Zhang, Hong Hao
Summary: Geopolymer concrete (GPC) has attracted attention due to its utilization of industry waste and outstanding mechanical properties. This paper presents an experimental study on the dynamic tensile properties of GPC and fibre reinforced GPC (FR-GRC) with steel and PP fibres. The addition of fibres effectively improves the ductility of GPC. Fibre stretching process contributes to crack reduction and energy dissipation. The split-tensile properties of GPC and FR-GPC are strain rate sensitive.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Construction & Building Technology
T. V. Muthukumarana, M. A. V. H. M. Arachchi, H. M. C. C. Somarathna, S. N. Raman
Summary: This paper provides an overview of carbon fiber and its characteristics, application, and properties in carbon fiber-reinforced concrete (CFRC). The variation of selected mechanical properties of CFRC with different fiber dosages compared to conventional concrete, including compressive strength, flexural strength, and splitting tensile strength, is comprehensively analyzed. The limitations of existing literature and areas for future research and development are also discussed.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Liang Liu, Gui Yang, Jianxin He, Hanlong Liu, Jingwei Gong, Haihua Yang, Wu Yang, Panuwat Joyklad
Summary: Blended fibres are used in ordinary Portland cement-based materials to improve their performance under fire. The addition of calcite powder increased mechanical strength of the materials, but higher temperatures led to significant reductions in strength. Empirical models were established to predict strength properties, with fibre factor and temperature as major affecting variables, showing superior outcomes.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Physical
Anna L. Mina, Konstantinos G. Trezos, Michael F. Petrou
Summary: This study conducted an extensive experimental investigation on the mechanical properties of Ultra-High-Performance Fibre-Reinforced Concrete (UHPFRC) to achieve high strength and ductile behavior. It was found that a specific mixture with certain proportions of steel fibers, superplasticizer, and water to binder ratio exhibited the highest strength and deformability. Additionally, a numerical simulation using ABAQUS successfully captured the experimental bending response of the best-performing UHPFRC mixture.
Article
Construction & Building Technology
Jiehong Li, Yang Yu, Taehwan Kim, Ailar Hajimohammadi
Summary: This paper investigates the flexural tensile behavior and splitting tensile strength of PVA fiber-reinforced foam concrete, revealing the underlying mechanism of fiber influence on both pre-crack and post-crack behavior. Machine learning technology is utilized to develop regression models that describe the importance of design parameters, fiber distribution, and pore structure. The results show that PVA fibers significantly enhance the pre-crack flexural performance and splitting tensile strength of foam concrete, and this improvement is related to the effect of fibers on the pore structure.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Engineering, Mechanical
Mohamed Esaker, Georgia E. Thermou, Luis Neves
Summary: This paper summarises the research on the impact resistance of concrete under different impact loads, focusing on high-velocity projectile impact loads. An experimental database is compiled to identify the critical failure modes and parameters influencing the impact resistance. The adequacy of existing formulas to predict penetration depth is assessed, and future research direction is discussed.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Construction & Building Technology
S. S. Vivek, B. Karthikeyan, Alireza Bahrami, Senthil Kumaran Selvaraj, R. Rajasakthivel, Marc Azab
Summary: Many research works have been conducted on metallic fibres, which improve the durability of concrete. However, corrosion is a challenge when using non-metallic fibres. In this study, a combination of synthetic fibres (polypropylene and abaca fibres) was investigated, along with the use of alccofine as a partial substitute for cement. The results showed that SCC with 15% alccofine, 0.5% abaca fibre, and 2% polypropylene fibre performed better than the control SCC.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Polymer Science
Rajab Abousnina, Sachindra Premasiri, Vilive Anise, Weena Lokuge, Vanissorn Vimonsatit, Wahid Ferdous, Omar Alajarmeh
Summary: This study investigates the engineering benefits of using extruded macro polyfibres in concrete, finding that the addition of fibres significantly enhances the mechanical and microstructural properties, especially compressive, splitting tensile, and bonding strength. Fibres also increase concrete toughness, decrease macroporosity, and improve compressive strength.
Article
Chemistry, Physical
Marcos Garcia Alberti, Jaime Carlos Galvez, Alejandro Enfedaque, Ramiro Castellanos
Summary: The combination of polypropylene fibers with steel rebars or fibers has been found effective for the structural design of elements exposed to high temperatures. The new polyolefin fibers show potential as an alternative to steel fibers in structural design.
Article
Computer Science, Interdisciplinary Applications
T. Ikumi, E. Galeote, P. Pujadas, A. de la Fuente, R. D. Lopez-Carreno
Summary: This paper introduces the use of a neural network to predict the post-cracking tensile strength of fibre-reinforced concrete, optimizing the network architecture and parameters to improve prediction accuracy. It can effectively predict the tensile strength of concrete at different cracking stages and perform parameter analysis to validate the consistency of the predicted results.
COMPUTERS & STRUCTURES
(2021)
Article
Green & Sustainable Science & Technology
Shuai Zong, Zhenzhen Liu, Shan Li, Yiyan Lu, Aohan Zheng
Summary: The study introduces steel fibres and recycled coarse aggregate to form steel-fibre-reinforced recycled aggregate concrete to enhance CDW recycling rate. Experimental results indicate that steel fibres positively influence the tensile behavior of concrete, with established predictive formulas. Recycled SFRAC is reusable and cost-effective, making the method feasible from an industrial perspective.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Construction & Building Technology
Wenjie Wang, Yunpeng Zhang, Zonglai Mo, Nawawi Chouw, Krishnan Jayaraman, Zhao-dong Xu
Summary: The study reviews the recent research progress on the mechanical properties of natural fibre reinforced concrete (NFRC) composites under impact loadings. It summarizes the impact performance of NFRC reinforced with various types of natural fibres in terms of load conditions, fibre characteristics, matrix strength, and damage pattern. The potential of NFRC as impact-resistant materials/structures in the field of building structural dynamics is discussed based on the impact resistance properties of different fibre types, comparing with man-made fibre reinforced concrete. Further research directions and challenges for NFRC are also prospected and conclusions are summarized, recommending optimal fibre content range and fibre length for different types of NFRC.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Physical
Hamad Hasan Zedan Khalel, Muhammad Khan
Summary: Fibre-reinforced cementitious composites are effective for construction, but selecting the right fibre material is challenging. The current research lacks consideration of key parameters such as fibre shape, type, length, and percentage. This study proposes a Khan Khalel model that can predict compressive and flexural strengths based on these parameters, with the accuracy of the model validated using statistical tools.
Article
Construction & Building Technology
Tao Ding, Jianzhuang Xiao, Shuai Zou, Jiangtao Yu
Summary: The study found that the addition of PE fibers can compensate for the negative impact of recycled sand on the flexural properties of 3D printed concrete specimens, significantly improving the flexural strength. Scanning electron microscopy results showed that the attachment of recycled sand can increase the porosity of the specimens.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Mechanics
Yekai Yang, Chengqing Wu, Zhongxian Liu
Summary: With the development of additive manufacturing, attention has been paid to 3D printing concrete construction technology. This study focused on the dynamic splitting tensile behavior of 3D printed ultra-high performance fibre reinforced concrete (3DP-UHPFRC). The anisotropic characteristics of 3DP-UHPFRC were evaluated and a preliminary dynamic tensile orthotropic constitutive model was proposed.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Qais S. Banyhussan, Ammar N. Hanoon, Ali Al-Dahawi, Gurkan Yildirim, Ali A. Abdulhameed
JOURNAL OF BUILDING ENGINEERING
(2020)
Article
Mechanics
T. Unal Donmez, Abdullah Turer, Ozgur Anil, R. Tugrul Erdem
Summary: With the advancement of construction technologies, the formwork systems used in structure manufacturing have undergone significant changes and developments. This study investigates the performance and behaviors of timber beams under different loading types, using both experimental and numerical analysis methods.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2022)
Article
Construction & Building Technology
Ummu Karagoz Isleyen, Rahim Ghoroubi, Omer Mercimek, Ozgur Anil, Abdullah Togay, R. Tugrul Erdem
Summary: Laminated wooden beams are preferred over solid timber beams due to their higher load-carrying capacity and ability to accommodate larger openings in structures. The need for strengthened laminated wooden beams to increase their ultimate load capacity has become apparent, especially in large wooden structures where traffic load is higher and larger openings are necessary. Strengthening details such as anchorage and non-anchorage CFRP strips with different bonding lengths have been developed to enhance the ultimate load capacity and overall performance of glulam timber beams.
ADVANCES IN STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
Ali A. Abdulhameed, Ammar N. Hanoon, Haider A. Abdulhameed, Qais S. Banyhussan, Aseel S. Mansi
Summary: The study demonstrates that incorporating rubber aggregate and oil palm fiber into concrete cores in SCS structures can significantly enhance energy absorption capacity, improve impact resistance and ductility of materials, and provide important structural advantages.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Materials Science, Composites
ummu K. Isleyen, Rahim Ghoroubi, Omer Mercimek, Ozgur Anil, Recep Tugrul Erdem
Summary: Over the past 20 years, there has been a gradual increase in the use of wooden structures, with laminated wood elements being the primary composite wood material. The development of wooden structures has led to an increased demand for improving the load-bearing capacity of laminated wood elements. This study focused on using CFRP strips to reinforce glulam wooden beams, along with the application of CFRP fan-type anchors, in order to enhance load-bearing capacity and load-displacement behavior.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2021)
Article
Construction & Building Technology
Turgut Kaya, Murat Aras, Tolga Yilmaz, Ozlem Caliskan, Ozgur Anil, R. Tugrul Erdem
Summary: This study investigates the impact behavior of RC beam to column connections strengthened with CFRP strips through experimental research, interpreting the effects of dynamic responses and experimental variables on the connections. The good agreement between numerical and experimental results demonstrates the validity of the numerical procedures for evaluating the impact behavior of RC beam to column connections strengthened with CFRP strips.
STRUCTURAL CONCRETE
(2021)
Article
Engineering, Civil
R. Tugrul Erdem, Kocali Karal
Summary: Revisions of earthquake resistant design methods have been made periodically in seismic codes due to major-scale earthquakes. Existing buildings in active seismic zones worldwide have shown severe damage and collapse in past earthquakes. Therefore, the evaluation and strengthening of the seismic performance of existing buildings according to different seismic codes have become a global issue in structural engineering. Non-linear methods have provided reliable evaluation procedures for performance-based assessment of buildings with the advancement of computer technology. This study performs non-linear performance analysis of a mid-rise reinforced concrete building according to Turkish Building Earthquake Code-2018 and American Standard, ASCE. After evaluating damage, the building is strengthened using steel braces. The proposed strengthening method is found to be a significant alternative for such buildings.
Article
Engineering, Civil
Tolga Yilmaz, Ozgur Anil, R. Tugrul Erdem
Summary: This study investigates the dynamic responses and failure modes of two-way reinforced concrete (RC) slabs with openings under impact load effect. Experimental tests and numerical simulations show that the size and location of the openings have an impact on the slabs' dynamic performance.
Article
Mechanics
Tolga Yilmaz, R. Tugrul Erdem, Norimitsu Kishi, Ozgur Anil
Summary: The impact behavior of shear deficient RC beams was investigated through numerical analysis and comparison with experimental results. The explicit dynamic analysis of 27 shear-deficient RC beams using ABAQUS software was conducted, aiming to establish a reasonable finite element model. It was found that the proposed nonlinear finite element method had a maximum difference of 7% for impact loads and 14% for mid-span displacements when compared to experimental results.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2022)
Article
Construction & Building Technology
R. Tugrul Erdem
Summary: The study compared the behavior of concrete beams with and without fibers through experimental and numerical analysis, finding that numerical analysis could be a valuable option in investigating the behavior of beams in four-point bending.
CEMENT WAPNO BETON
(2021)
Article
Computer Science, Interdisciplinary Applications
R. Tugrul Erdem
Summary: The study investigates the dynamic behavior of two-way RC slabs under sudden impact loading, with results showing that the rigidity of the specimens affects the experimental results, as acceleration values increase and displacement values decrease with larger specimen sizes. Artificial neural network (ANN) analysis is used to predict maximum acceleration and displacement values, yielding consistent results compared to experimental values.
COMPUTERS AND CONCRETE
(2021)
Article
Construction & Building Technology
R. Tugrul Erdem, Murat Berberoglu
Summary: The study aims to investigate the dynamic behavior of slabs produced by cement based grout mortars under impact loading, using artificial neural networks for prediction and evaluation of impact results. The proposed ANN model is considered effective for evaluating the dynamic responses of test specimens through comparison of experimental and analysis results.
REVISTA ROMANA DE MATERIALE-ROMANIAN JOURNAL OF MATERIALS
(2021)
Article
Construction & Building Technology
Recep Tugrul Erdem
Summary: The study investigates the dynamic responses of reinforced concrete slabs under low-velocity impact using both experimental and numerical methods. Different reinforcement configurations and slab sizes are tested, with cracks and deformations observed during experiments. Numerical simulations verify experimental results and suggest potential use in evaluating impact loading outcomes.
REVISTA DE LA CONSTRUCCION
(2021)
Article
Engineering, Civil
Engin Gucuyen, M. Ensar Yigit, R. Tugrul Erdem, Umit Gokkus
Article
Engineering, Civil
R. Tugrul Erdem, Erkan Kantar, Engin Gucuyen, M. Berker Alicioglu
