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Mechanics and permeability properties of ecological concrete mixed with recycled engineering muck particles J. Build. Eng. (IF 6.4) Pub Date : 2024-05-07 Jinsheng Lei, Yu Yang, Xinghua Chen
The excavation of construction foundation pits, tunnels, channels, and other projects generates a significant volume of engineering muck, posing challenges in management. Prolonged accumulation of this muck can lead to environmental pollution. The effective recycling of this type of construction waste is crucial for the advancement of a circular economy, necessitating immediate attention to research
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Experimental and numerical investigations of seismic performance of stepped beam-column joints with different connection forms J. Build. Eng. (IF 6.4) Pub Date : 2024-05-07 Xin Cheng, Yun Li, Yi An, Jianfei Liu, Ruibin Zhang, Fangfang Liao
The seismic resilience of prefabricated steel structures significantly depends on the design and construction of beam-column joints. To address the challenges related to the installation of prefabricated wall panels and overall system assembly, this study introduces a novel stepped beam-column joint. The effectiveness of different connection configurations on the seismic behavior of the joints was
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Flow characteristics and resistance coefficients of local components of building heat-moisture-oxygen transport pipelines in the Tibetan Plateau J. Build. Eng. (IF 6.4) Pub Date : 2024-05-07 Haowen Wu, Yingying Wang, Yanfeng Liu
The Tibetan Plateau is characterized by low-pressure, cold, hypoxic, and dry ambient conditions. Thus, in addition to heating, buildings in the region need humidification and oxygenation. It is noted here that the existing specifications of the resistance coefficients of the gas flow in the HVAC pipeline do not consider the effect of the variation in air components on the local resistance of the pipeline
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On improved microstructure properties of slag-based UHPC incorporating calcium formate and calcium chloride J. Build. Eng. (IF 6.4) Pub Date : 2024-05-07 Yanchen Oinam, Mandip Dahal, Minwuye Mesfin, Solmoi Park, Hyeong-Ki Kim, Sukhoon Pyo
The study aimed to achieve high strength in slag-based cementless ultra-high performance concrete (UHPC) while investigating the role of calcium formate and calcium chloride as accelerators using advanced characterization and microstructural analysis. The UHPC specimens were evaluated using various techniques, including heat of hydration, thermogravimetric analysis, X-ray diffraction, nuclear magnetic
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Characterization of self-healing in cement-based materials with a low water-to-cement ratio during subsequent hydration J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Liangshun Li, Yue Wang, Peiyao Yu, Siyi Zhao
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Displacement prediction of inclined existing buildings with a raft foundation restored by compaction grouting in clay J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Dai Xiaolang, Huang Feng, Wang Guihe, Cui Tengyue, Cui Xuedong, Guo Feng
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Performance evaluation and multi-objective optimization of a hybrid earth-air heat exchanger and building-integrated photovoltaic/thermal system with phase change material and exhaust air heat recovery J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Amin Shahsavar, Neda Azimi
The current study explores the feasibility of employing an integrated system comprising an earth-air heat exchanger (EAHE) unit and a photovoltaic/thermal (HPT) system equipped with a phase change material (PCM) to fulfill the heating, cooling, and electrical loads of a building. In this arrangement, ambient air is heated during cold months by passing it through the EAHE and PCM-based HPT systems,
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Frosting characteristics of microchannel heat exchangers: Parametric studies and correlation development J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Tong Xiong, Tianyang Zhao, Guoqiang Liu, Lei Zhao, Junfeng Jin, Qiang Gao, Gang Yan
Recently, microchannel heat exchangers (MCHX) have been widely used in heat pump systems due to their high surface-to-volume ratio and high efficiency of heat transfer. However, when the MCHX operates in frosting conditions, its performance is adversely affected. To study the frost formation and distribution characteristics of MCHX, a comprehensive parametric study was performed for the MCHX with a
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Prediction of properties of recycled aggregate concrete using machine learning models: A critical review J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Zengfeng Zhao, Yajie Liu, Yanyun Lu, Chenyun Ji, Can Lin, Lei Yao, Ziying Pu, Jorge de Brito
Recycled aggregate concrete (RAC) not only alleviates the shortage of natural aggregates but also promotes the recycling of construction and demolition waste, contributing to sustainable development. Traditional empirical and statistical formulas have limited applicability and perform poorly when dealing with complex relationships. Therefore, machine learning has been widely used to predict the performance
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Analyzing energy consumption due to occupant interaction with manual and automatic window blinds in multiple climates J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Sepideh Niknia, Hazem Rashed-Ali
Proper daylight management through automated or manual blind systems can enhance user comfort and energy conservation. Furthermore, the influence of weather conditions, coupled with occupant behavior, significantly impacts energy consumption, rendering weather forecasts invaluable in conducting individual building energy simulations to identify energy-efficient strategies for the future. Also, I wonder
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Investigation of strength and water permeability of sustainable high-performance concrete containing high-volume ground bottom ash blended with fly ash and nano-silica J. Build. Eng. (IF 6.4) Pub Date : 2024-05-06 Harsimranpreet Kaur, Natthawat Kulthaweepisit, Trinh Nhat Ho Tran, Chai Jaturapitakkul, Weerachart Tangchirapat
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Rack-level cooling technologies for data centers – A comprehensive review J. Build. Eng. (IF 6.4) Pub Date : 2024-05-05 Xiuming Li, Mengyi Li, Yingbo Zhang, Zongwei Han, Shengwei Wang
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Effect of connection methods on hygrothermal performance of prefabricated concrete building walls J. Build. Eng. (IF 6.4) Pub Date : 2024-05-04 Xingguo Guo, Longhui Nie, Jiangjun Ji, Wenhua Chen, Yong Li, Xiangwei Liu
With the ongoing surge in global energy demand and the escalating environmental concerns, attention has turned to building energy consumption in numerous countries. According to a 2019 report by the International Energy Agency (IEA), the global building industry is responsible for 36 % of energy consumption, ranking first among all industries. The 2022 China Building Energy Consumption and Carbon Emissions
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Analyzing the effects of size and density on the ultimate compressive strength of structural laminated bamboo parallel to the grain J. Build. Eng. (IF 6.4) Pub Date : 2024-05-04 Jiannan Li, Jian Yan, Yiyi Zhou, Shulan Yang, Amardeep Singh
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Corrigendum to “Active smart switchable glazing for smart city: A review” [J. Build. Eng. 84, 2024 1-20 108644] J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Aritra Ghosh, Rim Hafnaoui, Abdelhakim Mesloub, Khaled Elkhayat, Ghazy Albaqawy, Mohammed Mashary Alnaim, M.S. Mayhoub
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Performance and microstructure of sintered sludge ash-modified cement paste J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Youzhi Yang, Zhuofan Wu, Xuebin Hu, Jinrui Zhang, Wujian Long, Biqin Dong
Sintered sludge ash (SSA) has garnered attention for its potential to mitigate carbon emissions by replacing cement. This study investigates the consequential changes in the macro and micro properties of cement paste following the addition of SSA. Fluidity tests unveiled that the high specific surface area of SSA was the primary factor contributing to the reduction in fluidity and the delayed setting
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Seismic performance of self-centering steel column base with buckling-restrained bars J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Peiwen Shen, Pu Yang, Yue Chen, Yiming Yang, Jianting Zhou
Self-centering structures, emerging as a vital innovation in earthquake-resilient design, offer notable advantages in structural integrity, rapid functional recovery post-earthquake, and economic efficiency over the building's life cycle. This paper introduces a self-centering steel column base, employing buckling-restrained bars for energy dissipation. Through an analysis of its force mechanism, it
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Physical and mechanical properties of deflection-hardening hybrid fibre-reinforced recycled aggregate concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Paing Htet, Wensu Chen, Zhijie Huang, Hong Hao
Recycled aggregate concrete (RAC) has been gaining a large interest in recent years due to the depletion of natural aggregates and environmental protection requirements. To improve the ductility of RAC for structural applications and to avoid corrosion risks involved with utilising steel fibres, this study proposes a deflection-hardening hybrid fibre-reinforced recycled aggregate concrete (FRRAC) by
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Development and characterization of self-centering friction dampers with confined shape memory alloy bars J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Ozgur Avsar, Sasa Cao, Osman E. Ozbulut
This study proposes a new self-centering, shape memory alloy bar-based device to address the tension-compression asymmetry and limited energy dissipation capacity of similar SMA bar-based devices. The proposed device, named the Confined Superelastic Friction Damper (CSFD), employs buckling-restrained SMA bars to maintain symmetry in force-displacement responses and enhance effectiveness in both tension
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The bonding performance of desert sand self-compacting concrete overlay on normal strength concrete substrate: Macro, micro, and ultrasonic testing J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Weihan Cai, Haifeng Liu, Wenjing Xu, Jialing Che, Shu Ing Doh
This study investigates the performance of concrete containing desert sand (desert sand concrete and desert sand self-compacting concrete) as overlay concrete to bond with normal-strength concrete substrate, with different bonding interfaces being considered. The impermeability of the bonding interface is determined by the electrical resistance test. Static bonding strength is tested by conventional
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Impact of bi-facial PV panels’ presence as the novel option on the energy management and scheduling of the interconnected grids: Comprehensive outlook J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Masoud Aryan Tabar, Mehdi Ahmadi Jirdehi, Mohammad Shaterabadi
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Structural properties and barrier performance of low-cost aerogel composites for building insulation J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Zihao Song, Yujie Lei, Wenting Ran, Man Yuan, Sisi Shang, Sheng Cui
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Performance of recycled refractory brick fine aggregate on diverse properties of Portland slag cement based heat resistant concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Sudipta Ghosh, Subhrajit Sinha, Amiya Kumar Samanta
Utilization of industrial by-products generated through thermal processes is a critical approach in response to the industrialization and urbanization trends, may contribute to the creation of sustainable concrete, which might experience fire through its lifespan and its residual properties, are of specific interest. Hence, this innovation initiates a comprehensive experimental program to analyse the
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Durability of green rubberized 3D printed lightweight cement composites reinforced with micro attapulgite and micro steel fibers: Printability and environmental perspective J. Build. Eng. (IF 6.4) Pub Date : 2024-05-03 Burak Bodur, Muhammet Ahmet Mecit Işık, Ahmet Benli, Barış Bayrak, Ali Öz, Oguzhan Yavuz Bayraktar, Gökhan Kaplan, Abdulkadir Cüneyt Aydın
The increasing amount of tires manufactured annually worldwide has made waste tire management a major environmental concern. The goal of this work is to investigate the potential applications of waste tire aggregates (WTA) in a novel class of affordable, recycled composite materials. This study assesses the material behavior of rubberized 3D printed lightweight cement composites (3DLC) reinforced with
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Pore structure development of cementitious materials with manufactured sand from various lithologies and differential effect of CaO–MgO blend expansion agent J. Build. Eng. (IF 6.4) Pub Date : 2024-05-01 Yu Xiang, Haitao Zhao, Dongkang Hu, Nan Hu, Junyu Chen, Wen Xu
With intensifying the contradiction between the demand and supply of nature sand (NS), the extensive utilization of manufactured sand (MS) as a substitute has become prevalent in various projects. The pore structure development plays a crucial role in early-age shrinkage of concrete, but research on pore structure development of cementitious materials incorporating diverse lithologic MS is still lacking
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Electric vehicle-based distant energy sharing between zero-emission coastal office and hotel buildings J. Build. Eng. (IF 6.4) Pub Date : 2024-05-01 Yaxuan Li, Gokula Manikandan Senthil Kumar, Sunliang Cao, Shengwei Wang
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Prediction of compressive strength of glass powder concrete based on artificial intelligence J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Xu Miao, Bingcheng Chen, Yuxi Zhao
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Reinforcement learning in building controls: A comparative study of algorithms considering model availability and policy representation J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Ziyan Wu, Wenhao Zhang, Rui Tang, Huilong Wang, Ivan Korolija
Reinforcement Learning (RL) has presented considerable potential as an advanced control technique in building controls to enable buildings operating more energy-efficient. As various types of RL algorithms have been studied on their performance of building controls, benchmarking these algorithms across the entire spectrum of features is essential to provide an overview and deepen the understanding
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Axial capacity of a novel cold-formed steel swaged section: Experimental tests and design J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Wei Wang, Hooman Rezaeian, Krishanu Roy, Zhiyuan Fang, James B.P. Lim
This paper reports a total of 101 experimental results on the axial behaviour of CFS columns having a swaged section at the end or in the middle of channels under a fixed-fixed boundary. For comparison, the equivalent CFS columns with plain sections were also tested; CFS columns with five different stud lengths and three different cross-sections were tested. It was found that compared to the plain
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Influence of thermal fatigue cycles on concrete cold joints J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Adam J. Kriegl, Dagmar Svecova
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Study on the rheology, mechanical properties and microstructure of polypropylene fibers in different binder systems J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Juanhong Liu, Lingzhi Guo, Yayun Xi, Linian Cheng, Deping Chen
To explore the effects of polypropylene fiber (PPF) on the properties of different binder materials, the effects of PPF on the rheology, shrinkage, mechanical properties and microstructure of alkali-activated mortar (AAM) and ordinary Portland cement mortar (PCM) were studied. The results showed that the addition of PPF reduced the fluidity of the mortar, and the lower the initial yield stress and
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Properties and microstructure of a low-carbon clinker-free cementitious binder and its extrusion-based printing performance J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Jin Yang, Gaoyuan Zhai, Xingyang He, Yuanzhen Tang, Ying Su, Xiaolei Yu, Jingyi Zeng, Fulong Wang
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Improving the bonding performance of new and old cement pastes by high-temperature treatment on the surface of old cement pastes J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Junjie Wang, Jiatong Guo, Jixiang Su, Rong Huang, Lei Xu, Siyi Chen, Xiaogang Chen, Huiyu Tang, Yuli Wang, Dong Xiang, Shenghua Wu
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Evaluation of tensile failure behavior of ultra high performance concrete under double-edge wedge splitting and direct tension loadings J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Xue Ouyang, Yong Huang, Xiang Hu, Jian Yin, Caijun Shi
UHPC tensile strength is often measured indirectly through splitting tests and flexural tests substituted for direct tensile tests. However, the tensile strain-hardening and multiple cracking performance of UHPC is highly sensitive to the testing techniques and the specimen shape used. In this paper, the double-edge wedge splitting (DEWS) test and direct tensile test were performed to evaluate the
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Seismic performance analysis of coastal reinforced concrete frames considering the pitting corrosion in the longitudinal reinforcement bars J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Zhiwei Miao, Hao Yuan, Yifan Liu, Xiangdong Geng
Reinforcement corrosion is a major factor that influences the durability of reinforced concrete (RC) structures. In this study, the detrimental effects of pitting corrosion of longitudinal reinforcement and the dominant wind direction on the seismic performance of RC frame structures were investigated on the basis of a reliable numerical simulation method, which considers the degraded mechanical properties
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Thermal comfort, daylight, and energy performance of envelope-integrated algae-based bioshading and static shading systems through multi-objective optimization J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Maryam Talaei, Hamed Sangin
Energy-efficient envelopes integrated with different shading devices, as noticeable passive design strategies, have been of great interest for research studies. However, there is a lack of attention on optimizing envelope-integrated novel algae-based bioshading systems (ABBS) in comparison with other shading devices to enhance buildings’ sustainability-oriented performances. Integrating microalgae
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Bonding properties of composite interface composed of concrete/magnesium phosphate cement-based ECC/CFRP plate J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Shuang Nie, Aofei Guo, Hu Feng, Qunfang Hu, Hao Huang
To prevent premature debonding of fiber reinforced polymer (FRP) from concrete surface and achieve rapid repair of flexural members, magnesium phosphate cement-based ECC (MPC-ECC) with many advantages of early strength, multi-cracking and steady-state cracking was combined with carbon fiber reinforced polymer (CFRP) to explore the feasibility of strengthening flexural members. The bonding properties
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Applicability of electrochemical chloride extraction to concrete made with different binders J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Thamara Tofeti Lima
The present study concerns the application of electrochemical chloride extraction to concrete designed with partial replacements from different binders, namely ground granulated blast furnace (GGBS), pulverized fly ash (PFA) and Silica Fume (SF), aiming to attend the need of corrosion repair for structures made in the more recent years. Concrete specimens were used to assess characteristics such as
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Experimental study on the preparation of wood aggregate recycled concrete using waste wood and recycled fine aggregate from construction and demolition wastes J. Build. Eng. (IF 6.4) Pub Date : 2024-04-30 Peihan Wang, Chenyang Xu, Qiuyi Li, Liang Wang, Yuanxin Guo
As a renewable resource, wood has the advantages of a high strength-weight ratio, high yield and excellent thermal insulation. Meanwhile, the resource utilization of large quantities of waste wood, waste furniture and mixed wood generated by the demolition of old houses and the removal of building formwork are basically in a blank state. Therefore, in this study, construction solid waste—waste wood
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Mix design and performance of low-carbon alkali-activated slag/bagasse ash cementitious materials J. Build. Eng. (IF 6.4) Pub Date : 2024-04-29 Jing Li, Dongbin Chen, Kangfeng Yu, Shuai Zhang, Wenxiang Cao, Chaofan Yi, Xuesen Lv, Xuemin Cui, Yan He, Zheng Chen
The utilization of sugarcane bagasse ash (SCBA) in alkali-activated materials (AAMs) is currently limited due to its subpar mechanical properties and the absence of a mix design approach. This study aimed to develop a high-strength, cost-effective, and low-carbon alkali-activated slag/bagasse ash (AASL/BA) composites through multi-objective optimization (MOO) models. The results showed that increasing
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Variability and health impact of air pollutants and bioaerosols in multi-functional indoor environments with mechanical ventilation system J. Build. Eng. (IF 6.4) Pub Date : 2024-04-29 Murnira Othman, Mohd Talib Latif, Haris Hafizal Abd Hamid, Nor Hidayu Abu Bakar, Nur Husna Mohamad, Nur Farahiyah Haron, Nor Mohd Razif Noraini
The condition of indoor environments significantly impacts human daily life and health, where exposure to harmful substances affects the resilience of occupants. To understand the dynamics of indoor air quality and its implications for occupant health thus this study evaluated air pollutant concentration (TVOC, NO, O, CO, CO, PM, PM, and PM) and bioaerosol in mechanically ventilated offices, laboratories
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Performance study of new lightweight cementitious composites with glass beads as filler J. Build. Eng. (IF 6.4) Pub Date : 2024-04-29 Guanhua Ni, Zhenglin Fu, Zhao Li, Gongshuai Sun, Xiangfei Zhang, Gang Wang, Zhenyang Wang, Yixin Liu, Chuanhua Xu
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Carbonation curing behavior and performance improvement of recycled coral waste concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-29 Yi-Sheng Wang, Shafiq Ishak, Guang-Zhu Zhang, Xiao-Yong Wang
Carbonation curing can improve material properties and reduce the concrete industry's carbon emissions. This study used powder prepared from waste coral to replace ordinary Portland cement (0, 10, and 20 %). After initial curing for 24 h, the mortar was cured by sealing and carbonation. The dilution effect of coral powder substantially reduces the mechanical properties under sealing curing. Under carbonation
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Enhancing concrete durability in chloride-rich environments through manual application of healing agents J. Build. Eng. (IF 6.4) Pub Date : 2024-04-29 Vanessa Cappellesso, Tim Van Mullem, Elke Gruyaert, Kim Van Tittelboom, Nele De Belie
Concrete structures in chloride-rich environments are prone to deterioration, especially when ions can intrude via cracks towards the steel reinforcement. Self-healing concrete could significantly extend the service life of reinforced concrete. Hence, selecting appropriate healing agents to improve the durability is a critical challenge for the construction industry. This study investigates the use
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Study on the encapsulation effect and mechanism of hollow ceramsite to phase change materials (PCMs) J. Build. Eng. (IF 6.4) Pub Date : 2024-04-28 Fei Wang, Hui Li, Zhigang Qiao, Yuchen Li, Wukui Zheng, Yujin Gou, Yongle Qi
In order to promote the development of phase change materials (PCMs) and make them better applied, more in-depth research on the PCMs encapsulation is needed. The hollow ceramsite prepared in this study is a new type of PCMs carrier. Due to its unique structure, the encapsulation of PCMs by hollow ceramsite differs from that of ordinary porous ceramsite. In this paper, the adsorption and sealing effect
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Cyclic loading behavior of novel internally stiffened double steel plate shear wall J. Build. Eng. (IF 6.4) Pub Date : 2024-04-28 Zi-Qin Jiang, Jun-Jie Wang, Cun-Jie Shen, Tian Yan, Lei Su
In this paper, a novel Internally Stiffened Double Steel Plate Shear Wall (ISD-SPSW) is proposed based on the concept of improving the buckling mode of steel plates and enhancing the lateral resistance of steel plate shear wall (SPSW). The ISD-SPSW consists of double outer steel plates on both sides, inner stiffened rib plates, and boundary members. The seismic behavior of ISD-SPSW was investigated
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Study on the mechanical properties of a viscoelastic self-centering brace with rotational displacement amplification and its application in RC frames J. Build. Eng. (IF 6.4) Pub Date : 2024-04-28 Debin Wang, Ran Pang, Guoxi Fan, Gang Wang
This paper introduces a novel viscoelastic self-centering brace with a rotational displacement amplification function (VSB-RA), developed to address the issue of limited energy dissipation in traditional self-centering braces. The basic structure and working mechanism of the VSB-RA are detailed. Low-cycle reciprocating loading tests were performed on two types of VSB-RA specimens with different initial
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A feasibility study of using low-alkalinity seawater sea sand concrete to improve the long-term bond performance of the BFRP bar in the seawater environment J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Yong Yi, Deju Zhu, Md Zillur Rahman, Shuaicheng Guo, Sheng Li
BFRP bar has been recognized as one of the most promising alternative reinforcements to address the chloride-induced corrosion of steel bar-reinforced concrete structures in the marine environment. However, the high alkalinity of normal concrete is aggressive to BFRP bars, affecting their long-term bond performance. To address this issue, the bond durability performance of BFRP bar-reinforced low-alkalinity
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Evaluation of freeze-thaw resistance of geopolymer concrete incorporating GFRP waste powder J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Tianyi Wu, Jie Wu, Chuji Zheng, Jun Wang
This study investigates the use of glass fiber reinforced polymer (GFRP) waste powder as a partial replacement for cementitious materials in the synthesis of geopolymer concretes (GPCs), focusing on their durability under freeze-thaw (F-T) conditions. Two types of binary GPCs were synthesized: GFRP powder/ground granulated blast furnace slag (GGBS)-based GPC and GFRP powder/fly ash (FA)-based GPC,
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Potential application of bio-admixtures in synthesizing traditional lime binders- A comprehensive review J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 V.S. Athira, Sreedevi Lekshmi, A.G. Sharanya, Abhishek Tripathi, Swathy Manohar
Ancient lime mortar and plaster recipes are observed to be highly superior in terms of performance and durability, known from the era of Roman concrete. Bio-admixtures (organics) of different characteristics are a certain ingredient in ancient lime binders. However, their preparation, concentration, role of action, influence on properties of lime binders are only partially acknowledged. Inadequate
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ITZ volume fraction and thermal conductivity of concrete: A unified random packing model for gravels and crushed rocks J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Wenxiang Xu, Junliang Fu, Runyang Hua, Fangyu Han
This work proposes a mesostructure-guided computational framework to evaluate the effective thermal conductivity (ETC) of concrete affected by aggregate and interfacial transition zone (ITZ) configurations at a mesoscopic scale. An unified aggregate shape descriptor for gravels and crushed rocks is characterized by superellipsoid covering from convexity to non-convexity, as well as random static and
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Revealing the phase transition of steel frames with CFST columns during progressive collapse process from a thermodynamic perspective J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Zijie Shen, Yu Zhang, Guangchun Zhou, Lanhui Guo, Zhenyu Wu
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Innovative use of hazelnut shell ash as an alkali activator: A comparative analysis with commercial activators J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Tarik Omur, Derya Kanat, Nihat Kabay
The selection of alkali activators is crucial in determining the characteristics of alkali-activated materials (AAMs). The activators are typically derived from commercial sources and significantly affect the ecological impact of AAMs across different life cycle categories. Hence, this study investigated the utilization of hazelnut shell ash (HNA) as an alternative activator in the synthesis of AAMs
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Effect of mix dosage on rubberized concrete mechanical performance: A multivariable prediction model towards design provisions J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Felipe Guíñez, Hernán Santa María, Gerardo Araya-Letelier, Jocelyn Lincoleo, Fabrizio Palominos
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Effect of seashell powder as binder material on the performance and microstructure of low-carbon sustainable alkali-activated concrete J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Yuping Wu, Jingzhou Lu, Yanfeng Nie, Wenhui He
This paper proposes using waste seashells as raw materials to partially replace fly ash in alkali-activated concrete (AAC). Fifteen groups of alkali-activated mortar and concrete were designed, with seashell powder (SP) substitution and sodium hydroxide molar concentration as variables. The material's workability, compressive strength, hydration products and micropore structures were examined. The
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Concrete self-healing performance using surface roughness parameters: Metrological approach J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Amir Sidiq, Sujeeva Setunge, Pratheep Kumar Annamalai, Rebecca J. Gravina, Filippo Giustozzi
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Experimental and simulation study on the thermoelectric performance of semi-transparent crystalline silicon photovoltaic curtain walls J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Longyu Yao, Wenjie Zhang, Fengcheng Huang, Rui Zhao, Kai Tang
This study aims to evaluate and optimize the thermoelectric performance of semi-transparent crystalline silicon photovoltaic (PV) curtain walls. An integrated thermoelectric performance coupling calculation model was developed, combining heat transfer and electricity generation calculations as a novel approach. Simulations and experiments were conducted to compare the performance of PV curtain walls
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Cross-sectional shape effect of stay-in-place formwork column on axial compressive behaviour J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Zainab Hashim Abbas, Iqbal N. Gorgis, Maan S. Hassan
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Preparation and hydration of low-carbon UHPC with high fraction of activated tuff and recycled fine powders J. Build. Eng. (IF 6.4) Pub Date : 2024-04-27 Daosheng Sun, Huiying Hu, Rui Ma, Xun Hu, Yi Ding, Aiguo Wang, Kaiwei Liu
Due to the high energy consumption and carbon emission of cement, using active supplementary materials in concrete is widely studied. In this paper, waste tuff micropowder and recycled fine powder (RFP) with maximum replaced ratio of 70 % were investigated by alkali activation in ultra-high performance concrete (UHPC), the mechanical properties and hydration process were studied with different dosages
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Exploring wood micromechanical structure: Impact of microfibril angle and crystallinity on cell wall strength J. Build. Eng. (IF 6.4) Pub Date : 2024-04-26 Xuan Wang, Wanwan Zhao, Yaoli Zhang, Jiangtao Shi, Shuya Shan, Liping Cai
Since wood has recently acquired increasing attention from structural engineers due to its green and low-carbon attribute, a growing interest in understanding the intricate relationships between the microstructure of wood and the mechanical properties of building components. This study was aimed at investigating the wood micromechanical structure of plantation Chinese fir ( (Lamb.) Hook), focusing