Article
Construction & Building Technology
Claudio D'Ambra, Gian Piero Lignola, Andrea Prota
Summary: Fabric Reinforced Cementitious Mortar (FRCM) strengthening is proven to be effective in improving the in-plane shear capacity of masonry walls, with Italian CNR guidelines proposing both simple and complex approaches for design. The aim is to reconcile and clarify the potential of FRCM systems in masonry strengthening, focusing on the impact of material properties on strengthening capacity. A comprehensive overview is provided through a final worked example.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Martin Klun, David Antolinc, Vlatko Bosiljkov
Summary: Recent earthquakes have highlighted the high vulnerability of non-structural masonry partition walls, especially in public buildings. An experimental study investigated the behavior of these walls under out-of-plane loading, finding that the use of glass fiber reinforcement techniques can significantly improve resistance.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Civil
O. S. Turkmen, B. T. De Vries, S. N. M. Wijte, J. M. Ingham
Summary: The study developed a minimally-invasive and cost-effective out-of-plane seismic retrofitting technique by deep mounting CFRP strips to masonry using a flexible adhesive. The addition of a single-sided FRCM overlay further enhanced the out-of-plane performance. The proposed model provided a good approximation for walls additionally reinforced with a single-sided FRCM overlay, but overestimated the lateral moment capacity for walls solely retrofitted with FDM CFRP strips in high mid-span displacement scenarios.
Article
Construction & Building Technology
Mingke Deng, Zhifang Dong, Jie Dai, Xiangyang Zhao
Summary: This study compared the effectiveness of different reinforcement methods for unreinforced masonry walls. It found that high-strength and high-toughness ECCs provided the best ductility and maximum bearing capacity. However, the use of CFRP sheets was limited. These findings are important for improving the load-carrying capacity and deformation capability of unreinforced masonry buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Salvador Ivorra, Benjamin Torres, F. Javier Baeza, David Bru
Summary: The experimental study focuses on the mechanical performance of masonry walls under in-plane cyclic shear forces, with reinforcement using Textile Reinforced Mortar (TRM) to improve strength, ductility, and energy dissipation capacity. Results show that TRM significantly increased the mechanical strength, displacements, and energy dissipation, while effectively controlling crack initiation and growth.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Civil
Muhammad Raouf Abdul-Kadir, Sarwat Hassan Ahmed, Ahmed Mohamed Raouf
Summary: This study presents the results of testing eight clay brick walls and discusses the strengthening techniques used. The results showed that all the strengthening techniques improved the lateral load-carrying capacity, ductility, and toughness of the walls. The walls strengthened with a steel frame around the opening and near-surface mounted steel bars exhibited the highest increase in shear strength.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2023)
Article
Mechanics
Andre Furtado, Hugo Rodrigues, Antonio Arede, Jose Melo, Humberto Varum
Summary: This study examines experimental analysis of textile-reinforced mortar based strengthening solutions to prevent the out-of-plane collapse of masonry infills in RC buildings. The results will provide insights into the effectiveness of the strengthening techniques and support for the best strategies for future research and applications.
COMPOSITE STRUCTURES
(2021)
Review
Construction & Building Technology
Ivan Hafner, Tomislav Kisicek, Matija Gams
Summary: This paper presents an overview of seismic strengthening methods for masonry structures in earthquake-prone areas. Due to the large number and pre-existing nature of these structures, their vulnerability to seismic activity is a significant challenge. The development of both traditional and modern methods for strengthening masonry piers and walls is discussed, with a focus on modern approaches utilizing a Fabric-Reinforced Cementitious Matrix. The advantages and disadvantages of these methods are evaluated in terms of usability, feasibility, and effectiveness. Additionally, a comparison is made between traditional and new methods based on composite materials.
Article
Construction & Building Technology
Marijana Hadzima-Nyarko, Stanko Colak, Borko D. Bulajic, Naida Ademovic
Summary: The study explores the use of FRP to strengthen unreinforced masonry structures and presents various approaches for calculating the bearing capacity of FRP-reinforced masonry. The findings from experiments are compiled into a database and compared with formulas from literature and building codes to discuss the model's limitations.
Article
Engineering, Civil
Luis Mercedes, Ernest Bernat-Maso, Lluis Gil
Summary: This study used numerical models to investigate the effectiveness of using different plant fibers (hemp, cotton, and glass) to strengthen masonry walls with a fabric reinforced cementitious matrix (FRCM), and validated the model's effectiveness. The results showed that the proposed model performed well in simulating the shear force of reinforced walls under cyclic loads, but had limitations in simulating the reversible crack opening-closing phenomenon.
Article
Construction & Building Technology
Davide Cassol, Ivan Giongo, Jason Ingham, Dmytro Dizhur
Summary: The text discusses the inadequate seismic performance of unreinforced masonry (URM) buildings in earthquake prone countries and the retrofit technique of connecting vertical timber elements to improve their seismic capacity.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Maria Teresa De Risi, Andre Furtado, Hugo Rodrigues, Jose Melo, Gerardo Mario Verderame, Antonio Arede, Humberto Varum, Gaetano Manfredi
Summary: This study presents experimental outcomes of using TRM-based strengthening technique on infilled frames under OOP loading, and examines the effect of previous IP damage on the response of infills. The results demonstrate that TRM strengthening strategy can effectively enhance the seismic performance of infill panels, but the OOP strength may be influenced to some extent in the presence of IP damage.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Geological
Pranoy Debnath, Sekhar Chandra Dutta, Lipika Halder, Bishwajeet Choubey
Summary: This paper adopts an advanced numerical modeling technique to study the nonlinear behavior of unreinforced masonry walls and the effect of opening positions and sizes. The study finds that reinforcing the walls with wire mesh and polypropylene bands can improve their load-carrying capacity and energy dissipation capacity. This detailed research is believed to be helpful in reducing the seismic vulnerability of masonry structures.
BULLETIN OF EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Laura Navas-Sanchez, Jaime Cervera Bravo
Summary: This paper proposes an analytical approach derived from theoretical considerations to characterize the complete out-of-plane seismic response curve of unreinforced masonry cantilever walls, showing its high practicality and reliability.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Ornella Iuorio, Jamiu A. Dauda, Paulo B. Lourenco
Summary: The application of oriented strand board type 3 (OSB/3) for retrofitting unreinforced masonry walls can significantly increase the load and flexure capacity of the walls, thereby strengthening the structure.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Song Wang, Mohamed A. ElGawady
CONSTRUCTION AND BUILDING MATERIALS
(2019)
Article
Engineering, Civil
Song Wang, Mohamed A. ElGawady
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2019)
Article
Engineering, Civil
Noor S. Yacob, Mohamed A. ElGawady, Lesley H. Sneed, Aly Said
ENGINEERING STRUCTURES
(2019)
Article
Construction & Building Technology
J. D. Carter, M. Abdulazeez, M. A. ElGawady, K. H. Khayat
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Engineering, Civil
Song Wang, Mohamed ElGawady
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2020)
Article
Construction & Building Technology
Jamal Elmapruk, Mohamed A. ElGawady, Reza Hassanli
JOURNAL OF STRUCTURAL ENGINEERING
(2020)
Editorial Material
Acoustics
Xing Ma, Nawawi Chouw, Mohamed ElGawady, Songye Zhu, Xiaonong Guo
SHOCK AND VIBRATION
(2021)
Article
Engineering, Civil
Fareh Abudawaba, Eslam Gomaa, Ahmed Gheni, Mohamed ElGawady
Summary: This study investigated the use of class C fly ash as a precursor for alkali-activated mortar in 3D-printed concrete. Different mixtures of AAM were examined to develop tailored mixtures for different structural applications. The study evaluated the strength behavior of AAM under different CTs based on OT and immediate deformation tests.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Engineering, Civil
Alireza Pourhassan, Ahmed A. Gheni, Mohamed A. ElGawady
Summary: Water film depth (WFD) is an important factor for road traffic safety, with increased pavement macrotexture reducing WFD and improving skid resistance. Existing WFD prediction models were found to be inaccurate for highly textured surfaces, leading to the proposal of two new experimental models. Additionally, eco-friendly rubberized chip seal showed enhanced drainage capability compared with conventional chip seal.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Construction & Building Technology
Zuhair Al-Jaberi, John J. Myers
Summary: This study investigates the efficiency of using different types of advanced composite materials to confine masonry columns. The capacity of masonry columns confined with fiber reinforced polymer (FRP), fiber reinforced cementitious matrix (FRCM), or steel reinforced grout (SRG) is evaluated based on experimental data. Different theoretical standards and proposed models are also evaluated. The results show that all types of advanced composite materials significantly increase the ultimate capacity of masonry columns.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
M. Iqbal Khan, S. Umer Sial, Galal Fares, Mohamed ElGawady, Shehab Mourad, Yousef Alharbi
Summary: This investigation explores the use of strain-hardening cementitious composites (SHCC) formulated based on desert sand to strengthen structural members. The results show that SHCC overlay beams enhance the flexural capacity, ductility, and crack control of the beams.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Civil
Yasser Darwish, Mohamed ElGawady
Summary: Metal roofing is commonly used in industrial and storage facilities with low-slope and flat roofing systems. Retrofitting with a thermo-plastic polyolefin single ply membrane is a popular method due to its ease of installation, cost efficiency, and lightweight. This paper presents a finite element model to analyze the behavior of a single ply membrane retrofitting a metal deck roof under wind uplift, validated with experimental results. Parametric study was conducted to investigate the effect of different fastener patterns, spacing, and membrane strength.
Article
Engineering, Civil
Alireza Pourhassan, Ahmed A. Gheni, Mohamed ElGawady
Summary: The characteristics of traffic load, such as vehicle speed and load magnitude, are crucial to the raveling performance of chip seal pavement, but have been overlooked by previous literature. Recently, a sustainable chip seal made from tire derived aggregate (TDA) has been introduced. This study investigated the effects of vehicle speed and load on the raveling performance of chip seal specimens constructed with mineral aggregate, TDA, and a hybrid combination. The findings showed that load and speed have opposite effects on the texture loss of conventional and TDA chip seals, with conventional chip seals experiencing increased texture loss and TDA chip seals showing a decrease. The use of TDA resulted in significant reductions in macrotexture loss under increased load and speed compared to conventional chip seal, attributed to the dynamic properties of TDA.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Engineering, Multidisciplinary
Z. R. Aljazaeri, Z. Al-Jaberi
Summary: In this study, a nonlinear three-dimensional finite element model was developed to analyze the performance of reinforced concrete beams strengthened by fiber reinforced cementitious matrix (FRCM). The results showed that the steel reinforcement ratio has a significant impact on enhancing the ultimate capacity of the strengthened beams.
INTERNATIONAL JOURNAL OF ENGINEERING
(2021)
Proceedings Paper
Engineering, Civil
Z. K. Al-Jaberi, J. J. Myers
ADVANCES IN ENGINEERING MATERIALS, STRUCTURES AND SYSTEMS: INNOVATIONS, MECHANICS AND APPLICATIONS
(2019)
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)
