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Corrigendum to “Utilizing bio-based and industrial waste aggregates to improve mechanical properties and thermal insulation in lightweight foamed macro polypropylene fibre-reinforced concrete” [J. Build. Eng. 91 (2024) 109588] J. Build. Eng. (IF 6.7) Pub Date : 2024-09-13 Zi Cong Yong, Ming Kun Yew, Ming Chian Yew, Jing Han Beh, Foo Wei Lee, Siong Kang Lim, Lip Huat Saw
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Pre-treatment of waste hydrated cement used for replacement of fine aggregate using amine-based CO2 solvent J. Build. Eng. (IF 6.7) Pub Date : 2024-09-13 Seongho Han, Tae Hoon Han, Jesse Harold Perez Hilario, Jae Hong Kim
In the realm of construction and demolition (C&D) waste, a small fraction of hydrated cement waste is typically repurposed to generate supplementary cementitious material or filler for concrete. However, the conventional method of utilizing it in powder form demands significant energy consumption to achieve the necessary fineness. Therefore, this study proposes a method to use a waste-hydrated cement
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Comparative study of limestone calcined clay cement produced with mechanically activated kaolin and calcined kaolin J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 Jofre Mañosa, Sergio Huete-Hernández, Adrian Alvarez-Coscojuela, Alex Maldonado-Alameda, Josep Maria Chimenos
Limestone calcined clay cement (LC) is a promising solution for mitigating CO emissions in cement production by substantially replacing clinker with widely available supplementary cementitious materials. While calcination is the conventional method for activating clay, there is a growing interest in mechanical activation. Incorporating mechanically activated kaolin into LC formulation would offer a
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Long-term durability of iron-rich geopolymer concrete in sulphate, acidic and peat environments J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 Yulin Patrisia, David W. Law, Chamila Gunasekara, Arie Wardhono
This study assesses the behaviour of iron-rich type F fly ash geopolymer concretes (GC) exposed to simulated sulphate, acidic, and peat environments, typical of those encountered in tropical peatlands. GC and Portland cement (PC) concrete of comparable strengths were exposed to a range of simulated solutions for 18 months, including 5 % magnesium sulphate (MgSO), 5 % sodium sulphate (NaSO), 1 % and
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Effect of reinforcement on the anisotropic expansion of concrete with CSA-based expansive additives J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 Mayank Gupta, Kolneath Pen, Go Igarashi, Yuya Takahashi, Tetsuya Ishida
Expansion properties of concrete with expansive additives (EAs) are dependent on the composition of the EAs and the nature of the external restraints. This study focuses on calcium sulfoaluminate (CSA) based EA, investigating their expansion behavior under uniaxial restraint conditions. This novel aspect of the work is highlighting the effect of restraint in one direction on the expansion in different
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PVA fiber reinforced red mud-based geopolymer for 3D printing: Printability, mechanical properties and microanalysis J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 Kang Han, Fei Gu, Huashan Yang, Xinchen Tian, Xiangqin Du
Red mud-based geopolymers are an efficient alternative to resolve the high cement consumption in 3D printed concrete (3DPC). From a materials perspective, good printability and mechanical properties are critical to adopting red mud-based geopolymers in 3DPC. In this study, we selected bauxite tailings-red mud and blast furnace slag to prepare geopolymers. Polyvinyl alcohol (PVA) fibers with 0, 0.3 %
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Numerical simulation of multi-factor influence mechanism in “Barrier closure” dust removal technology J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 Na Qin, Haiming Yu, Junwei Zhao, Yao Xie, Xu Li
A novel “Barrier closure” method is introduced in this study to address the challenges of sealing dust sources in open workplaces, rapid dust diffusion, and difficulty in controlling dust pollution. The coupling model of airflow and dust is applied to analyze the influence of various factors on dust diffusion. The results show that before using the new technology, the dust concentration at the sidewalk
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Towards sustainable construction: Strength and microstructural assessment of Dillenia suffruticosa and Acacia auriculiformis leaf ash as novel supplementary cementitious materials J. Build. Eng. (IF 6.7) Pub Date : 2024-09-12 G. Murali, Deric Lee, Leong Sing Wong, Isyaka Abdulkadir
Researchers are exploring local, recycled, and waste materials for construction to address environmental concerns. Concrete heavily depends on cement, contributing to energy consumption and greenhouse gas emissions. Substituting cement with alternatives like recycled materials can cut energy use and minimize the environmental impact on concrete production. This research represents the first investigation
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Repair of ordinary concrete using basalt fiber reinforced geopolymer: High temperature resistance and micro structure evolution of adhesive interface J. Build. Eng. (IF 6.7) Pub Date : 2024-09-11 Ke Wang, Bozhong Lin, Borui Wu, Yao Yao
Good bonding properties in the interfacial transition zone (ITZ) between the substrate and the repair material are critical to the success of the repair, and a good repair material can act as a protective layer to reduce the impact of fire on the structure. In this paper, Ordinary concrete (OP), geopolymer mortar (GP), and basalt fiber reinforced geopolymer mortar (GPb) were poured as the three repair
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Influence of vacuum and high-temperature on the evolution of mechanical strength and microstructure of alkali-activated lunar regolith simulant J. Build. Eng. (IF 6.7) Pub Date : 2024-09-11 Yizhou Yao, Chao Liu, Wei Zhang, Huawei Liu, Tilin Wang, Yiwen Wu, Xin Li, Xianqin Chen
Alkali-activated lunar regolith (AALR) has become one of the most promising lunar building materials, offering the potential to support the construction of large-scale lunar structures. This paper presents a comprehensive experimental investigation on the fresh properties, physical properties, mechanical performance and microstructural characteristics of alkali-activated lunar regolith simulant (AALRS)
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Specimen size effect on compressive strength of 3D printed concrete containing coarse aggregate with varying water to binder ratios J. Build. Eng. (IF 6.7) Pub Date : 2024-09-11 Xianggang Wang, Enlai Dong, Zijian Jia, Lutao Jia, Kailun Xia, Zedi Zhang, Yu Chen, Li Zhang, Yueyi Gao, Yamei Zhang
This study aims to investigate the specimen size effect of compressive strength in 3D printed concrete containing coarse aggregate (3DPCA). Firstly, we compare the specimen size effect of compressive strength in mold-cast concrete (CC) and 3DPCA. Through X-CT scans and image analysis, the underlying mechanisms of this specimen size effect in 3DPCA are revealed. The results indicate that 3DPCA exhibits
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Analysis on the characteristics of spatiotemporal distribution and their causes of temperature and strength in three-graded mass concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-09-11 Jianguang Xu, Dongshuai Hou, Yongsheng Li, Penggang Wang, Jiuwen Bao, Shaolong Zhou, Hao Liu, Qixuan Liu
The use of prefabricated mass concrete blocks have gained increasing attention in construction industry. However, excessive temperature due to hydration can easily cause cracks, and the development of strength influences the lift and transportation time, thus affecting the efficiency of the precast yard. In this paper, the temperature field of three-graded mass concrete was simulated using Midas Civil
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Multiple impact resistance and microstructure of hybrid fiber-reinforced fly ash/slag-based geopolymers after exposure to elevated temperatures J. Build. Eng. (IF 6.7) Pub Date : 2024-09-11 Zhijun Cheng, Zhe Wang, Zhenzhen Liu, Shan Li
Engineered geopolymer composites (EGC) have garnered significant attention from researchers as a new environmentally friendly building material with superior tensile properties, impact resistance, and high-temperature resistance. This study focuses on the investigation of the dynamic mechanical properties of a hybrid fiber reinforced lightweight EGC containing ceramsite (LW-EGC) after exposure to elevated
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Developing an automatic integration approach to generate brick model from imperfect building information modelling J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Mingchen Li, Zhe Wang, Gabe Fierro, Chi Hou Cecil Man, Pok Man Patrick So, Kin Fung Calvin Leung
Recent advanced architectural algorithms, such as real-time optimization control and fault diagnostics, have garnered significant interest for their ability to reduce building energy consumption and improve equipment maintenance efficiency. However, deploying these algorithms in actual buildings often involves significant manual effort and time to align building data points with algorithmic requirements
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A heat-measurement-free strategy for Economic Model Predictive Control of hydronic radiators J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Michael Dahl Knudsen, Massimo Fiorentini, Steffen Petersen
Cost-efficient measurement of room-level heat output from hydronic radiators is a major barrier to large-scale implementation of Economic Model Predictive Control (EMPC) in residential space heating for demand-side management. This paper therefore presents a novel EMPC strategy for hydronic radiators that relies on measurements of radiator pipe temperatures as a proxy for the radiator heat output,
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Effects of non-uniform perforated solar screen on daylighting and visual comfort performance J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Lingjiang Huang, Kai Zou, Xiaohu Zhang, Shuangping Zhao
Perforated solar screens are extensively utilized as a shading solution for fully glazed buildings and transparent envelope systems. While uniform perforated solar screens have been traditionally employed, the growing trend towards non-uniform screens highlights their potential to enhance architectural aesthetics through varied perforation patterns on building facades. However, the effects of non-uniform
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Experiment and analysis on seismic performance of a self-centering Y-eccentrically braced frames structure J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Moqiang Xiong, Jingang Xiong, Shujun Hu, Youquan Liu, Kai Wang
Conventional eccentrically braced frames (EBFs) exhibit significant residual deformations following major earthquakes, necessitating costly repairs for the damaged structures. This study proposed a novel self-centering Y-eccentrically braced frames (SC-YEBFs) system to enhance the seismic resilience. A theoretical mechanical model which takes into account its components is formulated to predict the
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Comparative analysis of saliency map algorithms in capturing visual priorities for building inspections J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Muhammad Rakeh Saleem, Rebecca Napolitano
This study investigates the efficacy of saliency mapping algorithms in capturing the visual priorities of building inspectors for structural damage assessment. Our work established a ground truth dataset by implementing eye-tracking technology to capture the gaze patterns of building inspectors. Further, it enables a detailed evaluation of the saliency models’ ability to reflect experts' visual attention
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Restraint effect of steel bar on early-age shrinkage of steel bar-mortar composites J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Hao Wang, Zihao Liu, Jinhui Tang, Zhangli Hu, Ting Yao, Hua Li, Jiaping Liu
Time-space-dependent stress and strain distribution within steel bar-mortar composites is key for shrinkage and cracking prediction of Reinforced-Concrete (RC) members. A novel system was designed to investigate the restraint of steel bars on the early-age shrinkage while digital image correlation was also employed to analyze spatial strain distribution. The measured restraint degree increases with
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Lateral stiffness of modular steel joint with semi-rigid bolted intra-module connection J. Build. Eng. (IF 6.7) Pub Date : 2024-09-10 Xiaodun Wang, Guannan Lu, Yang Liu, Zhihua Chen, Qi An, Xiujun Wang
In contrast to the beam-column joints found in traditional assembled steel structures, modular steel structures feature inter-module and intra-module connections within their joints. While existing research has largely focused on the mechanical properties of inter-module connections, the impact of intra-module connection stiffness on the performance of modular steel joints remains unclear. This study
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An experimental assessment of a solar PVT-PCM thermal management system in severe climatic conditions J. Build. Eng. (IF 6.7) Pub Date : 2024-09-08 Mahmoud B. Elsheniti, Saad Zaheer, Obida Zeitoun, Ahmed Fouly, Hany S. Abdo, Zeyad Almutairi
Solar photovoltaic thermal (PVT) collectors incorporating phase change material (PCM) as an active-passive cooling approach represent a promising solution for thermally managing PV panels. This needs to be experimentally evaluated in harsh outdoor conditions. Therefore, this study examined the electrical and thermal performance of solar PVT systems in comparison to a reference PV panel during six distinct
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Refined analysis of a supporting column assembly in a traditional Tibetan timber building and its limiting tilt angle before collapse J. Build. Eng. (IF 6.7) Pub Date : 2024-09-08 Xiaowen Qian, Na Yang, Fan Bai
Traditional Tibetan architecture is an important part of the Chinese architecture. Many of the Tibetan structures are suffering from different types of damages after hundreds of years of service. The structural arrangement, types of damage and failure modes of these timber structures have been investigated on site. Tilting of structural members is found to be the most common type of damage. This paper
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3D characteristic indicator analysis and comprehensive evaluation of manufactured sand particles used in high-performance concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-09-08 Junxiu Lv, Xiaoyan Sun, Hailong Wang, Liang Wei, Riyan Lan, Tingquan He, Weisheng Su
Two-dimensional particle morphology indices face challenges in accurately depicting the characteristics of three-dimensional (3D) manufactured sand (MS), which does not effectively guide the selection of MS for high-performance concrete (HPC). This study aimed to obtain a quantified comprehensive evaluation of actual MS particle groups with specific gradations by thoroughly analysing 3D geometric characteristics
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Research on the flexural performance of recycled coarse aggregate concrete beams after carbonation J. Build. Eng. (IF 6.7) Pub Date : 2024-09-08 Ziyu Ji, Jin Wu, Lu Wang, Guoqing Dong, Zhikang Tan, Jingmiao Zhao, Yiyuan Wang
This paper discusses the flexural behavior of carbonated recycled aggregate concrete (RAC) beams through experimental data. We produced fifteen beams, each varying in recycled aggregate replacement ratios: 0 %, 30 %, 50 %, 70 %, and 100 %. Each replacement ratio included three beams, amounting to different levels of carbonation: non-carbonated, partially carbonated, and completely carbonated. Post
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Fire resistance of reinforced concrete columns: State of the art, analysis and prediction J. Build. Eng. (IF 6.7) Pub Date : 2024-09-08 Yuzhuo Wang, Zejian Liu, Xiao Zhang, Shuang Qu, Tiangui Xu
Reinforced concrete (RC) columns are commonly used as the main load-bearing component of building structures owing to their excellent mechanical properties, and the fire resistance of RC columns has become a pivotal focus with the growing occurrence of building fires. In this paper, the fire resistance of 148 specimens in 89 references was first summarized, and 15 influencing parameters of fire resistance
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A novel passive method to regulate the performance of photocatalytic-Trombe wall by horizontal fins J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Shuang-Ying Wu, Yi-Min Zhao, Lan Xiao
Constrained by the inadequate percentage of ultraviolet in solar irradiation and the low transmittance of photocatalytic layer, the purification and thermal performance of photocatalytic-Trombe wall (PC-TW) need to be improved urgently. To address this, a novel passive method to regulate PC-TW performance using horizontal fins was proposed. Aiming at this innovation, by numerical method, a three dimensional
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Characterization of inter-panel connections in CLT floors using finite element model updating J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Marija Milojević, Vitomir Racic, Marija Nefovska-Danilović, Suzana Ereiz, Ivan Duvnjak
Large cross-laminated timber (CLT) floors are inevitably composed of multiple CLT panels assembled on the construction site. Due to the sheer lack of adequate numerical characterization of the inter-panel connections, CLT floors are normally modelled as monolithic structures or independent “piano keyboards”, yielding errors between simulated and the actual vibration response. This paper presents a
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Experimental investigation on seismic performance of a super high-rise mega frame-double core tube composite structure J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Jie Yi, Bin Zhao, Xuefen Yuan, Gary Lin, Xilin Lu
Increasing population density and urbanization have intensified the need for high-rise buildings in recent years. The seismic resistance of high-rise buildings should be carefully concerned in seismic regions, especially for super high-rise buildings which are most vulnerable to long-period earthquakes. This paper introduced the model design of a 499 m super high-rise mega frame-double core tube composite
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A strategy for the improvement of the bonding performance of 3D-printed concrete interlayer interfaces J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Jing Cao, Shengzhao E, Yi Yang, Yaming Shi, Junrui Chai, Zengguang Xu
3D-printed concrete, as an intelligent building technology, has enormous potential in construction. However, the weak bond interfaces between two adjacent layers of concrete are still a well-known problem affecting the mechanical properties of printed structures, with reduced interlayer shear and tensile properties. The reinforcement method of inserting steel bars in vertically printed layers is crucial
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Rheological, mechanical, and environmental performance of printable graphene-enhanced cementitious composites with limestone and calcined clay J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Tugba Baytak, Tawfeeq Gdeh, Zhangfan Jiang, Gabriel Arce, Lisa M. Colosi, Osman E. Ozbulut
As extrusion-based 3D concrete printing gains wider acceptance in construction, there is a growing imperative to incorporate supplementary cementitious materials (SCMs) into printable mixtures to address their high cement content and promote sustainability. Conventional SCMs like fly ash and slag are becoming increasingly scarce, underscoring the need for alternative solutions such as limestone and
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Study on impact resistance performance of MSWIFA-based low-carbon fiber-reinforced concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Yanying Bai, Yuan Jia, Weichao Guo, Ningtao Zhang, Yongpeng Song, Qingxin Zhao
The accumulation of carbide slag (CS), red mud (RM), and municipal solid waste incineration fly ash (MSWIFA) has led to significant environmental pollution issues, necessitating urgent resource utilization. Building upon the previously developed CS-MSWIFA synergistic activation RM-slag cementitious system, this study aims to further incorporate iron tailings sand and polypropylene fibers to prepare
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Flexural behavior and design of aluminum alloy portal frame eaves joints J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Shaozhen Chen, Jinhui Luo, Jun Liu, Xiaonong Guo, Hui Li, Dian Li
Aluminum alloy portal frames (AAPFs) are suitable for both long-term and temporary buildings owing to their light weight, ease of installation and disassembly, and excellent corrosion resistance. Due to the critical importance of joint mechanical behavior for structural safety, this paper conducted experimental and numerical studies on the flexural behavior of AAPF eaves joints. Initially, bending
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A finite element analysis method for random fiber-aggregate 3D mesoscale concrete based on the crack bridging law J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Wang Xiong, Liao Wu, Lingling Wang, Chao Zhou, Yuexian Lu
Mesoscale modeling is an emerging analytical method that can be used to study fiber-reinforced concrete. However, fine fibers with micrometer diameters are distributed in millions in a standard specimen, so it is impossible to establish a mesoscale model and further analyze it, which severely limits the investigation of the reinforcement mechanism of fine fibers on concrete. This paper efficiently
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A unified theory for predicting the compressive stress–strain curve of concrete block masonry J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Jing Ouyang, Yajie Luo, Xiaolong Tong, Fangbo Wu, Xuhong Zhou
I-type internal structures are commonly present in concrete hollow block masonry. A unified theory based on I-type internal structures is proposed to analyze types of masonry systematically. In this unified theory, the I-type element represents the I-type internal structure; the equivalent frame is introduced to analyze the interaction between the block and grout; and the characteristic strength of
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The significance of mixing time in the development of the engineering properties of cemented fiber-reinforced tailings materials J. Build. Eng. (IF 6.7) Pub Date : 2024-09-07 Shuaigang Liu, Mamadou Fall
Fibre-reinforced tailings backfill (FRB) has gradually been introduced in backfill mining to improve the mechanical performance of cemented paste backfill, a construction material used worldwide in underground mines. However, the effect of mixing time on the key engineering properties of FRB is not known. Closing this knowledge gap is essential for the cost-effective application of FRB in mines. Thus
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Effect of composite slabs with profiled steel decks on robustness evaluation of beam–column assemblies J. Build. Eng. (IF 6.7) Pub Date : 2024-09-06 Zheng Tan, Wei-hui Zhong, Shi-chao Duan, Yao Gao, Yu-hui Zheng, Bao Meng
The laying directions of various profiled steel decks are arbitrary in actual engineering. Studies on the effect of various types of composite slabs with profiled steel decks in different directions on the structural collapse behavior for the anti-collapse design of connections along the strong- and minor-axis directions have been limited. In this study, two composite beam–column assemblies with longitudinal
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Continuum damage mechanics based fatigue life prediction and fatigue property analysis of pitting corrosion steel bars J. Build. Eng. (IF 6.7) Pub Date : 2024-09-06 Jun Zhang, Peiyuan Ji, Qiang Li, Xiaoping Zhong, Weiliang Jin, Dongming Lu, Fang Zhang, Jianghong Mao
An elastoplastic continuum damage model is applied to simulate the fatigue damage process of pitting corrosion of hot-rolled steel bars. The elastic and plastic model parameters for HRB400 steel bar are calibrated by systemic static and cyclic loading tests. Based on this model, a numerical simulation program is implemented in ABAQUS. The fatigue life prediction results of pitting corrosion hot-rolled
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Glass/hot-meltable/aramid fiber wet-laid felts: The influence of manufacturing treatment on acoustics, mechanical and thermal properties J. Build. Eng. (IF 6.7) Pub Date : 2024-09-06 Jiayi Chen, Jieyu Xue, Yuanlong Meng, Liping Liu, Jing Peng, Ruonan Han, Jianxun Zhang, Yong Yang
Glass/hot-meltable/aramid fiber wet-laid felts (GHAFs) endowed a unique sandwich structure by varying the hot-rolling temperature and duration. This work was aimed at investigating the effect of treatment parameters on acoustic property, thermal conductivity, and mechanical performance. The results demonstrated that sample (170–60) hot-rolling at 170 °C for 60 min exhibited outstanding mechanical performance
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Column-to-beam flexural strength ratio for rigorous strong-column–weak-beam design for steel–concrete composite frames J. Build. Eng. (IF 6.7) Pub Date : 2024-09-06 Wei-Jie Peng, Mu-Xuan Tao
This study addresses the limited research and unclear principles surrounding the strong-column–weak-beam (S-C–W-B) criterion in steel–concrete composite frames, a critical aspect of structural engineering. Despite its widespread application in steel frames, the S-C–W-B criterion's adaptation to steel-concrete composite frames remains underexplored. The research aims to clarify and establish consistent
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Structural performance of hybrid reinforced concrete beams containing polyvinyl alcohol fibers under thermal loads J. Build. Eng. (IF 6.7) Pub Date : 2024-09-06 Abdallah A. El-Sayed, Hatem Hamdy, Mostafa M. Khalil, Mohamed Said
This study focused on the efficiency of concrete beams containing polyvinyl alcohol fibers (PVA) under thermal loads. The eighteen concrete beams were reinforced with hybrid bars or a combination of GFRP bars and steel reinforcement bars (hybrid scheme). The main experimental variables were the level of temperature (25, 300, and 600 C), PVA fiber volume (0 %, 0.50 %, and 1.0 %), and the flexural reinforcement
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Performance analysis of a novel movable exhaust ventilation system for pollutant removal in industrial environments J. Build. Eng. (IF 6.7) Pub Date : 2024-09-05 Zhixiang Cao, Zhenghao Liu, Chen Zhang, Yi Wang, Yuqing Bai, Songheng Wu
Large industrial buildings typically generate significant amounts of alternating emissions from pollution sources. The common practice is to install local exhaust hoods for each pollution source and continuous exhaust. However, owing to the asynchronous emission of pollution, local exhaust hoods at non-operating pollution sources are idle and waste exhaust air. Because the total air volume remains
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Mix design of sustainable concrete using generative models J. Build. Eng. (IF 6.7) Pub Date : 2024-09-05 Jianhao Gao, Chaofeng Wang, S.H. Chu
Concrete is facing scrutiny due to its substantial carbon footprint. A sustainable transformation in concrete production becomes paramount. Traditional methods for creating greener concrete mixes heavily rely on empirical, iterative testing, which is slow, expensive, and often suboptimal. This study introduces a new optimization framework that leverages the capabilities of a generative model to transform
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Blast simulations of a reinforced concrete slab using the continuous surface cap model (CSCM) J. Build. Eng. (IF 6.7) Pub Date : 2024-09-05 Dawon Park, Tae Hee Lee, Yena Lee, Youngjun Choi, Jung-Wuk Hong
The continuous surface cap model (CSCM) is effective for analyzing the responses of concrete to blast loading, but its application process is often not thoroughly explained. This study details the process of conducting blast simulations on a reinforced concrete (RC) slab using the CSCM, highlighting the careful optimization of the fracture energy and damping for the concrete material model. We demonstrate
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Multi-condition incipient fault detection for chillers based on local anomaly kernel entropy component analysis J. Build. Eng. (IF 6.7) Pub Date : 2024-09-05 Tianqi Lu, Liangliang Shang, Hao Yan, Wan Chen, Jian Zhu, Fanyi Zhao
Chillers, as primary energy consumers in heating, ventilating, and air conditioning (HVAC) systems, play a critical role in maintaining indoor comfort. However, traditional data-driven methods often fail to recognize chiller incipient faults, leading to operational disruptions and increased energy consumption. To address this challenge, this article proposes an innovative chiller incipient fault detection
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Shaking table tests and seismic performance assessment of a vertical mixed concrete/steel structure with large cantilevers J. Build. Eng. (IF 6.7) Pub Date : 2024-09-04 Liu Liping, Li Jinming, Li Ruifeng, Li zhenwei, Xu Diangeng, Yi Qianying, Li Yingmin
A series of shaking table tests were carried out on a vertical mixed concrete/steel structure with large cantilevers spanning 12 m. Structural seismic performance in terms of damping ratio, vertical response of the cantilever segment, lateral acceleration and deformation responses, and seismic failure mechanism of the specimen were analyzed through test data. Moreover, a further assessment of the specimen's
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Correlation between seismic performance levels and damage index for regular RC frame buildings designed using the unified performance-based design method J. Build. Eng. (IF 6.7) Pub Date : 2024-09-04 Tushar Kanti Das, Satyabrata Choudhury, Pallab Das
Performance-based seismic design has transformed seismic engineering by prioritizing performance objectives over prescriptive code regulations, enabling engineers to tailor designs for specific performance during seismic events. The Unified Performance-Based Design (UPBD) approach, an advancement over the direct displacement-based method, integrates both interstorey drift ratio (IDR) and performance
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Corrigendum to “A data-enhanced approach for early-age drying induced moisture transport analysis on in-situ casted textile fibre reinforced concrete” [J. Build. Eng. 94 (2024) 110027] J. Build. Eng. (IF 6.7) Pub Date : 2024-09-04 Hasika Dharmasooriya, Yuguo Yu, Chamila Gunasekara, Dilan J. Robert, Sujeeva Setunge
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Study on damage evolution law and pore structure deterioration of recycled composite micro-powder concrete under freeze-thaw action J. Build. Eng. (IF 6.7) Pub Date : 2024-09-04 Jisheng Qiu, Gaohui Niu, Leilei Li, Le Li, Xiaolong Hu, Xiaotao Li
In preparing recycled aggregate from construction waste, recycled concrete powder (Recycled Concrete Powder, RCP) and recycled brick powder (Recycled Brick Powder, RBP) are produced, which makes the utilisation rate of construction waste low. Mixing RCP and RBP according to the mass ratio of 2 8 to prepare recycled brick mixed powder (Recycled Brick Mixed Powder, RBMP) instead of cement to prepare
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Numerical research on nonlinear liquid sloshing and vibration control performance of tuned liquid damper J. Build. Eng. (IF 6.7) Pub Date : 2024-09-04 Xin He, Chao Li, Lingwei Chen, Junhui Yang, Gang Hu, Jinping Ou
A high-level fire water tank typically situated atop high-rise building is adapted into a Tuned Liquid Damper (TLD) to mitigate wind-induced vibration of the building structure, thereby enhancing occupant comfort. This research focuses on investigating the nonlinear liquid sloshing characteristics of TLD using Computational Fluid Dynamics (CFD) method. Emphasis is placed on establishing a numerical
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Structural properties and mechanical responses of geopolymer pore models under chloride exposure: Molecular dynamics simulation J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Tongfang Wang, Biao Jiang, Tong Guo, Yongming Tu, Chao Wang, Gabriel Sas
Geopolymers are aluminosilicate materials and are an environmentally friendly alternative to Portland cement. However, the presence of nanoscale gel pores in geopolymers can affect their structural properties. At the molecular level, the main component of the geopolymer is sodium aluminosilicate hydrate (NASH). Therefore, this study uses molecular dynamics simulations to investigate the impact of various
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Study on modification of natural hydraulic lime historical building repair mortar J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Huaishuai Shang, Zhenhao Xiao, Xiaolong Wang, Zhaohu Lu, Shaohui Xu, Peisong Dong
Qingdao boasts a wealth of historical buildings, yet they have sustained varying degrees of damage due to environmental erosion over decades. Traditional cement-based repair materials can exacerbate the damage to these structures and often fall short of the stringent requirements for historical building restoration projects. Natural Hydraulic Lime (NHL) offers excellent compatibility and breathability
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Evaluating the sustainability of microwave pre-cured high-volume slag concrete: Mechanical properties, environmental impact and cost-benefit analysis J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Yi Han, Li-Yi Meng, Runsheng Lin, Songrae Kim, Taewan Kim, Xiao-Yong Wang
Microwave pre-curing, a novel method, offers numerous advantages including energy and time efficiency. The mechanical performance and durability of high-volume slag concrete (HVSC) subjected to microwave curing were experimentally investigated in this study. Additionally, the environmental impact and cost-effectiveness of microwave-cured HVSC were studied, and the ecological efficiency and cost efficiency
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Analysis of bond strength of CFRP cables with concrete using random forest model J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Tae-Kyun Kim, Seung-Hyeon Hwang, Jiyoung Kim, Woo-Tai Jung, Jinyoung Yoon
The use of carbon fiber-reinforced polymer (CFRP) as an alternative to steel tendons in prestressed concrete is increasingly favored due to its non-corrosive properties. A critical aspect of this substitution is the bond strength required to effectively transfer pre-stressing force. This study investigates the bond strengths of CFRP rods, CFRP strands, and steel strands following ISO 10406 standards
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Strain-rate-dependent performances of polypropylene-basalt hybrid fibers reinforced concrete under dynamic splitting tension J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Shilong Zhang, Caiwei Liu, Guangshuo Zhang, Yuhan Zhao, Zehao Chen, Ning Li
In order to understand the strain-rate-dependent performances of hybrid fibers reinforced concrete under dynamic splitting tension, the dynamic splitting tension properties of concrete reinforced with polypropylene fiber (PF) and basalt fiber (BF) were experimentally investigated using a 50-mm-diameter split Hopkinson pressure bar testing system and the mechanisms of PF and BF are explained. Results
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Mechanical properties and life cycle assessment (LCA) of waste glass reinforced concrete J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Zhipeng Jin, Kaikang Liang, Ce Liu, Guangzhao Yang, Kai Cui, Shihua Mao
As global warming continues and construction drains large quantities of natural resources, waste glass, a kind of solid waste that is difficult to degrade naturally, is gradually being used to alleviate the pressure of natural resource shortage. Waste glass powder (WGP) and glass fiber (GF) have been widely used in concrete production. This study aims to use WGP to replace traditional fine aggregates
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Experimental study of a novel prestressed precast concrete beam-to-column joint based on plastic hinge relocation J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Junlin Wu, Hui Yang, Zhengxing Guo, Jie Wu
To avoid the difficulties and high costs associated with traditional prestressed dry joints in construction, a novel post-tensioned precast concrete frame based on plastic hinge relocation (PPFBP) beam-to-column joint is proposed in this study. The precast columns and beams were integrated solely through the application of post-tensioned (PT) strands. The combined use of the haunched beams and the
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Recycling of waste glass powder: Effects on microstructure, mechanical properties and sustainability of seashell powder calcined sludge cement J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Yu'an Gong, Changzhi Shao, Rentai Liu, Qingsong Zhang, Jingguang Xu, Mengjun Chen, Jiwen Bai, Jiawei Tian
The massive accumulation of waste seashells, waste sludge and waste glass not only occupies a large amount of land resources, leading to a shortage of land resources, but also causes serious soil-water-air composite pollution over a long period of time with the role of the surrounding environment, which poses a serious hazard to the ecological environment and public health. In this study, the effect
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A review of new methods for measuring saturation of concrete and its impact on concrete properties J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Juncheng Wen, Yan Wan, Chengwei Xu, Yingzi Yang
Most durability problems with cement-based materials (CBMs) are water related, and CBMs are rarely fully water saturated in service. Therefore, methods for non-destructive testing (NDT) of the degree of saturation (DOS) in CBMs and the effect of DOS on durability have received increasing attention from researchers in recent years. This paper reviews the testing principles, methods and applications
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Polypropylene as an absorbent layer for acoustic ceilings: Sound absorption and life cycle assessment J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Miguel Galindo, Enedina Alberdi, Marco Antonio Sánchez-Burgos, Francisco José Nieves, Inês Flores-Colen
The substantial volume of polypropylene fabric waste generated because of its use in protective elements in hospital environments calls for the exploration of environmentally friendly solutions. This study characterises the acoustic absorption coefficient of surgical mask waste (polypropylene) to be used as absorbent layers in acoustic ceilings. Additionally, a life cycle assessment (LCA) has been
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Improving shear behavior of rubberized concrete beams through sustainable integration of waste tire steel fibers and treated rubber J. Build. Eng. (IF 6.7) Pub Date : 2024-09-03 Sayed Ahmed, Mohamed T. Elshazli, Mahmoud Zaghlal, Yasser Alashker, Ayman Abdo
This study investigates the innovative and sustainable use of crumb rubber (CR) and waste tire steel fibers (WTSF) in reinforced concrete beams. By addressing the concern of reduced shear capacity in rubberized reinforced concrete (RC) beams, the paper presents a sustainable approach that integrates WTSF and a hybrid treatment of CR involving temperature and fly ash. Six different concrete mixtures