Article
Polymer Science
Xuanyi Xue, Fei Wang, Jianmin Hua, Neng Wang, Lepeng Huang, Zengshun Chen, Yunhang Yao
Summary: This study investigates the effects of polyoxymethylene (POM) fiber on seawater sea-sand concrete (SWSSC). The results show that POM fiber enhances the early-age cracking resistance and mechanical properties of SWSSC.
Article
Green & Sustainable Science & Technology
Zalipah Jamellodin, Lim Qian Yi, Qadir Bux Alias Imran Latif, Hassan Amer Algaifi, Rafidah Hamdan, Adel Al-Gheethi
Summary: This study investigated the effect of a lower sand replacement content in glass waste on the mechanical and durability properties of concrete. The results showed that a lower replacement percentage of glass waste leads to enhanced concrete strength and water permeability.
Article
Engineering, Civil
Abdulaziz Alsaif, Abdulrahman Albidah, Aref Abadel, Husain Abbas, Yousef Al-Salloum
Summary: This study evaluates the performance of metakaolin-based geopolymer rubberized concrete, which shows acceptable fresh and hardened mechanical and durability properties. The compressive strength and modulus of elasticity of the concrete vary within a certain range depending on the replacement ratio.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Mahmoud H. Akeed, Shaker Qaidi, Hemn U. Ahmed, Wael Emad, Rabar H. Faraj, Ahmed S. Mohammed, Bassam A. Tayeh, Afonso R. G. Azevedo
Summary: This article provides a comprehensive review of the development, principles, raw materials, hydration and microstructure, fresh and hardened properties, durability properties, cost assessment, applications and challenges, mixture design, preparation, mixing, casting, and curing of ultra-high-performance concrete (UHPC). It aims to advance the fundamental knowledge of UHPC and promote further research and applications of UHPC.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Review
Construction & Building Technology
Khondaker Sakil Ahmed, Lutfar Rahman Rana
Summary: Rapid urbanization and infrastructure dismantling have had a significant impact on landfills. Researchers are looking for ways to reduce the consumption of natural resources by exploring the use of recycled waste glass (RWG) as an alternative in concrete construction. This review summarizes the effects and potential applications of RWG in concrete through the examination of numerous research publications.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Eslam Gomaa, Taihao Han, Mohamed ElGawady, Jie Huang, Aditya Kumar
Summary: This study introduces a random forest model to predict two important properties of fly ash-based AACs, providing high fidelity predictions of new AACs and quantitatively assessing the influence of physiochemical attributes and process parameters on AAC properties, offering a new pathway for optimization of AAC properties.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Viet Quoc Dang, Yuko Ogawa, Phuong Trinh Bui, Kenji Kawai
Summary: This study found that the use of non-desalted sea sand as fine aggregate in concrete can improve the mechanical properties and durability of concrete by accelerating the pozzolanic reactivity and early hydraulicity of supplementary cementitious materials. This validates the potential application of non-desalted sea sand for concrete production in coastal areas.
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
(2022)
Article
Construction & Building Technology
Shahrukh Shoaib, Tamer El-Maaddawy, Hilal El-Hassan, Bilal El-Ariss, Marwa Alsalami
Summary: This study investigates the effects of adding basalt macro-fibers on the fresh and hardened properties of normal and high-strength concrete. The results show that the addition of basalt macro-fibers reduces the workability of the concrete but improves its compressive strength and tensile properties. Additionally, the inclusion of basalt macro-fibers enhances the abrasion resistance and durability of the concrete.
Review
Polymer Science
Prabu Baskar, Shalini Annadurai, Kaviya Sekar, Mayakrishnan Prabakaran
Summary: Alternative eco-friendly and sustainable construction methods are being developed, including the use of geopolymers, a low-carbon cement-free composite material. By adding proper reinforcing elements, such as fibres, the ductility of geopolymers can be enhanced. This research study investigates the properties of fibre-reinforced geopolymers, including thermal stability, weight, and shrinking properties, as well as mechanical features such as strength and microstructure.
Article
Construction & Building Technology
Vaibhav Vinod Ingle, Senthil Kumar Kaliyavaradhan, P. S. Ambily, Deepadharshan Shekar
Summary: There are many advantages to using 3D concrete printing technology, including improved usability and accessibility. Researchers conducted experiments to develop 3D printable concrete without the use of chemical admixtures, and evaluated its fresh and hardened properties.
STRUCTURAL CONCRETE
(2023)
Article
Construction & Building Technology
Chidambaram Prithiviraj, Packirisamy Swaminathan, Deivasigamani Ramesh Kumar, Gunasekaran Murali, Nikolai Ivanovich Vatin
Summary: This study evaluated the fresh and hardened characteristics of self-compacting concrete containing copper slag as a fine aggregate. The results showed that the use of copper slag significantly improved the fresh characteristics and durability of the concrete.
Article
Polymer Science
Dario Heidrich, Michael Gehde
Summary: According to the study, the structural composition of both PBT and PET is mainly characterized by a large fraction of the rigid amorphous phase. The rigid amorphous phase is mainly formed during the primary or secondary crystallization processes at different temperature ranges.
Article
Engineering, Multidisciplinary
Chao Liu, Yuanliang Xiong, Yuning Chen, Lutao Jia, Lei Ma, Zhicong Deng, Zhibin Wang, Chun Chen, Nemkumar Banthia, Yamei Zhang
Summary: This study investigates the effects of adding sulphoaluminate cement (SAC) on fresh foamed concrete (FC) and 3D printed FC. The addition of SAC improves the printability and stability of FC, reducing settlement and defoaming and enhancing the mechanical properties of 3D printed FC.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Construction & Building Technology
Mohamed Abdellatief, Mohamed Mortagi, Mohamed Abd Elrahman, Ahmed M. Tahwia, Ayed E. Alluqmani, Hani Alanazi
Summary: This study developed ultra-high performance geopolymer concrete using geopolymer technology and predicted its properties using a statistical model. The optimum mixture and optimized details were determined through experiments and microscopic investigations.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Review
Construction & Building Technology
Ahmed Fathy, Han Zhu, Mohamed Kohail
Summary: This paper reviews the factors influencing bonding performance inside layered concrete elements, suggesting avoiding overly aggressive treatments for lower class concrete substrates and emphasizing the importance of measuring the substrate surface tensile strength. It also highlights the impact of the compressive strength gap between overlay and substrate on bonding strength.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Adel Younis, Usama Ebead, Kshitij Shrestha
STRUCTURAL CONCRETE
(2020)
Article
Construction & Building Technology
Adel Younis, Usama Ebead, Prannoy Suraneni, Antonio Nanni
JOURNAL OF BUILDING ENGINEERING
(2020)
Article
Construction & Building Technology
Juliana Moraes Neves, Sivakumar Ramanathan, Prannoy Suraneni, Richard Grugel, Aleksandra Radlinska
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Ying Wang, Wen Ni, Siqi Zhang, Jia Li, Prannoy Suraneni
APPLIED SCIENCES-BASEL
(2020)
Article
Construction & Building Technology
Deborah Glosser, Prannoy Suraneni, O. Burkan Isgor, W. Jason Weiss
Summary: Thermodynamic models for the hydration of ordinary Portland cement are generally accurate, but predicting reactions in cement systems with supplementary cementitious materials like fly ash can be challenging. Traditional methods that only use the bulk chemical composition of fly ash overestimate reactions. To improve predictions, researchers suggest measuring the reactive fraction of fly ash experimentally, or using X-ray techniques to estimate reactivity. By incorporating this information, thermodynamic modeling predictions can be substantially improved.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Chemistry, Physical
Xu Chen, Eric Kim, Prannoy Suraneni, Leslie Struble
Article
Mechanics
Islam Eltantawi, Wael Alnahhal, Ahmed El Refai, Adel Younis, Nasser Alnuaimi, Ramazan Kahraman
Summary: The study found that the bond between SC-BFRP bars and concrete was slightly higher than that of HW-BFRP bars, while the bond strength of spliced BFRP bars was inversely related to the splice length. BFRP bars with larger diameter required longer splice lengths to reach their maximum capacity.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Salma Hamid, Khalid Naji, Adel Younis, Usama Ebead
Summary: The paper studied the characteristics of concrete mixed with seawater and RTA through extensive experimental comparison of various mixtures. Additionally, a life cycle cost analysis was conducted for a 20-story building to verify the cost effectiveness of sustainable concrete with seawater, RTA, and GFRP reinforcement.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Adel Younis, Ambrose Dodoo
Summary: This paper provides an overview of the feasibility of using cross-laminated timber (CLT) in buildings from a life-cycle assessment (LCA) standpoint. The authors conducted a review of LCA studies conducted in the past decade and found that using CLT can reduce carbon footprint by approximately 40% in multi-story buildings compared to conventional construction materials. The paper also discusses the challenges associated with conducting LCA on CLT buildings and outlines directions for future research.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Walid Mansour, Usama Ebead, Mohammed T. Nagib, Sabry Fayed
Summary: This paper presents a study on improving the flexural performance of self-compacting hollow concrete beams with embedded aluminum sections, both experimentally and numerically. The experimental program involved testing three specimens to illustrate the impact of the bare and aluminum-reinforced voids on the mechanical properties of the hollow beams relative to the solid reference beam. A three-dimensional (3D) non-linear finite element model (FEM) was initially developed and validated against experimental results to examine the effects of void area, void configuration, longitudinal tensile reinforcement ratio, and shear reinforcement ratio on the failure patterns and load-displacement relationships of hollow reinforced concrete (RC) beams with or without reinforced internal aluminum sections. Results showed that the embedded aluminum reinforcement promoted a more uniform distribution of flexural cracks along the effective length of the hollow RC beams and delayed the formation of shear cracks. Furthermore, the embedded aluminum reinforcement effectively restored the ultimate capacity of the hollow beams with a void area ranging from 16 to 36% of the beam cross-section, and circular voids had higher ultimate load-carrying capacity compared to square voids.
Article
Materials Science, Composites
Adel Younis, HossamEldin El-Sherif, Usama Ebead
Summary: This study investigates the effect of using recycled concrete aggregate (RCA) and glass fiber reinforced polymer (GFRP) reinforcement on the shear behavior of reinforced concrete (RC) beams. The experimental results show that using 100% RCA reduces the shear strength of the beams, while changing the transverse reinforcement has a minor effect on the shear strength.
COMPOSITES PART C: OPEN ACCESS
(2022)
Review
Construction & Building Technology
Sami Sbahieh, Mohamed Rabie, Usama Ebead, Sami G. Al-Ghamdi
Summary: This paper provides an overview of the use of fiber-reinforced polymer composites in concrete structures and focuses on their environmental and mechanical properties. Through life cycle assessment, it is found that FRP composites can improve the strength and stiffness of structural members and reduce environmental impacts.
Article
Environmental Sciences
Kathleen Sullivan Sealey, Esber Andiroglu, Joel Lamere, James Sobczak, Prannoy Suraneni
Summary: Coastal communities globally are facing challenges of sea-level rise, extreme storm events, and deteriorating water quality. A multidisciplinary research team in South Florida evaluated eight coastal survey sites to understand the function of coastal structures. The study found that multifunctionality of coastal structures improves with horizontal extent, presence of coastal plants in buffer zones, and increased public access and use.
JOURNAL OF COASTAL RESEARCH
(2021)
Article
Construction & Building Technology
Tadesse G. Wakjira, Usama Ebead
Summary: The study suggests that steel reinforced grout (SRG) using near-surface embedded (NSE) technique can effectively improve the shear strength of RC beams, with NSE-SRG being more effective than externally bonded (EB) method. The research also shows that different strengthening configurations and schemes can affect the shear enhancement effect, and the SRG system is effective in preventing debonding issues.
STRUCTURAL CONCRETE
(2021)
Article
Multidisciplinary Sciences
Osama Abdeljaber, Adel Younis, Wael Alhajyaseen
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2020)
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)
