样式: 排序: IF: - GO 导出 标记为已读
-
Study of waste-derived high-sulfate artificial aggregates with regenerative capacity Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-19 Yulin Wu, Yunfeng Bao, Wenrui Wang, Xiaoqiang Qi, Siyao Guo, Zhiqing Jia, Congcong Wu
-
Application of sisal fiber powder in ultra-high performance concrete: A renewable material for mitigating autogenous shrinkage Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-19 Guosheng Ren, Xiaojian Gao, Anshuang Su
Ultra-high performance concrete (UHPC) has high autogenous shrinkage, greatly raising the risk of cracking. This study innovatively proposed the use of sisal fiber powder (SFP) to mitigate the autogenous shrinkage of UHPC. The influence of SFP on the fresh properties, heat of hydration, autogenous shrinkage, internal relative humidity, mechanical properties, and microstructure of UHPC were investigated
-
Using metakaolin to improve properties of aged Portland cement: Effectiveness and the mechanism Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-19 Mengya Li, Keren Zheng, Lou Chen, Ghimire Prateek, Xiaofeng Zhou, Qiang Yuan
Aging of Portland cement, due to its reaction with moisture and atmospheric CO prior to regular use, has the potential to severely impair its hydration reactivity. The effectiveness of using metakaolin to improve the properties of aged Portland cement exposed to a laboratory conditions (RH=65 %, 20 °C) as well as the associated mechanism are studied. The incorporation of 5–10 % metakaolin changes the
-
Strengthening effect of monolayer graphene oxide on the impact mechanical properties of concrete and the mechanism analysis based on fractal theory Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Tengjiao Wang, Erlei Bai, Biao Ren, Wei Xia, Jinyu Xu
-
Investigation of the variation of mechanical and durability properties of elements manufactured with rubber substituted SCMs with element height Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Melek Akgül, Serkan Etli
Controlling the homogeneous distribution of granulated rubber materials added to self-compacting concrete/mortars along the height is of great importance in terms of preserving and defining the holistic behavior of structural elements. In this study, the effect of EPDMGR (ethylene propylene diene monomer granulated rubber) ratio (0 %, 5 %, 10 %, 15 %, 20 % and 25 %), test age, L/D (slenderness ratio)
-
Life cycle assessment of urban road networks: Quantifying carbon footprints and forecasting future material stocks Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Bin Yu, Qihang Chen, Na Li, Yuchen Wang, Longyan Li, Mingmao Cai, Wenxuan Zhang, Tianqi Gu, Rongjun Zhu, Huifeng Zeng, Yong Zhang, Jun Jiang
-
Preparation of C-S-H seeds from solid waste and its application as Portland cement accelerator Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Sile Hu, Zhichao Xu, Xiaobing Ma, Yanlin Huo, Yingzi Yang
C-S-H seeds are expected to be a new type of accelerator to cope with the challenges of reduced strength and poor durability of concrete in the later stage caused by high dosage of accelerator. In this study, two solid wastes, rice husk ash and carbide slag, were used as silicon and calcium sources to synthesize C-S-H seeds. By screening the particle size and solid content of C-S-H seeds, the optimum
-
Monitoring long-term chloride penetration into wave power marine concrete structures under repeated air pressure Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Junyoung Park, Gyuyong Kim, Hamin Eu, Yaechan Lee, Seunghyeon Han, Younsung Choi, Sasui Sasui, Changhyuck Lim, Kyonghwan Kim, Jeongsoo Nam
An Oscillating Water Column (OWC) power plant is typically a partially immersed concrete structure that generates energy by moving waves, forcing air to flow back and forth through the turbine to produce a consistent amount of energy. Due to the repeated air pressure application, chloride penetration can be accelerated in the OWC structure. However, long-term studies on chloride penetration monitoring
-
Ion transport mechanism and diffusion model establishment in recycled aggregate concrete subjected to magnesium, sulfate, and chloride attack Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Jiabin Wang, Mengtao Fu, Kanghua Zheng, Kaifeng Zhang, Yijie Fan, Ditao Niu
Recycled aggregate concrete (RAC), which is used in Northwest China, is inevitably subjected to various aggressive environments. However, the aggressive ions of chloride, sulfate, and magnesium and the original ions of calcium and hydroxide in RAC under the combined action of magnesium-sulfate-chloride attack and dry–wet (D&W) cycles have received little attention in previous studies. Therefore, in
-
Enhancement of cantilevered RC beams exhibiting inadequate lap spliced reinforcement using sustainable reinforced ECC layers Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Mohamed Emara, Mohamed Ghalla, Jong Wan Hu, Moataz Badawi, Ehab A. Mlybari, Shiren Osman Ahmed
guidelines require an adequate overlap length for reinforcing bars, especially in extended spans of elements constructed from Reinforced Concrete (RC). Insufficient overlap can have adverse effects on key characteristics like bending strength and deformability of RC beams. The potential danger of failure in such elements is a significant concern as is considered a potential threat, and this study addresses
-
Lead immobilization in tailings–based alkali–activated materials Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Hao Wang, Lu Wang, Zhisheng Ren, Shuhua Liu
Our research explores the intricate mechanisms between lead (Pb) and alkali–activated materials (AAMs) derived from lead–zinc tailings. We delve into the lead immobilization process and its impact on material behavior. Our findings indicate that Pb shortened the induction period and accelerated later hydration by offering additional nucleation sites. Notably, Pb manifest a dual impact on the compressive
-
Utilizing DEM and interpretable ML algorithms to examine particle size distribution's role in small-strain shear modulus of gap-graded granular mixtures Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Xingyang Liu, Jiaqi Yang, Degao Zou, Zhanchao Li, Yuan Chen, Xiangyu Cao
This study merges macroscale and microscale analyses with interpretable machine learning (ML) algorithm to explore the effect of particle size distribution (PSD) on the small-strain shear modulus () of gap-graded granular mixtures. For this purpose, a database containing 610 groups of data samples was generated by conducting numerical triaxial compression simulations using the discrete element method
-
A systematic review exploring the feasibility of waste plastic as different constituents towards sustainable concrete Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Chhabirani Tudu, Monika Mohanty, Smruti Sourava Mohapatra, Sanket Nayak
Plastics have become an irreplaceable part of our daily lives due to their usefulness, low weight, and durability. Population growth and urbanization result in excessive usage of plastic products and produce huge quantities of plastic waste. However, only a small amount of plastic is properly recycled, which results in detrimental effects on ecology and the environment by the unrecycled plastic wastes
-
Effect of wet milling activation on mechanical properties and hydration process of cement composites with blast furnace slag Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Qian Zhang, Bo Liu, Shuying Wang, Xuhang Lu, Qiong Li, Jiling Liu, Siyu Wei, Jiaxing Fan, Shengen Zhang
In this study, blast furnace slag (BFS) was activated using water- and ethanol-assisted milling (AM). BFS-cement composites (BFS-CC) were prepared using milled BFS and cement. The effects of the activation process on the mechanical properties and hydration of BFS-CC were investigated. Results showed that water- and ethanol-AM significantly reduced the median particle size (D50) and improved the particle
-
Predicting the strength development of 3D printed concrete considering the synergistic effect of curing temperature and humidity: From perspective of modified maturity model Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Bochao Sun, Randy Dominicus, Enlai Dong, Peichen Li, Zi Ye, Wei Wang
This study aims to establish a development model for the compressive strength of 3D printed concrete (3DPC) under the coupling influence of temperature and humidity, utilizing the maturity method. Initially, diverse curing conditions were applied to 3D printed specimens, incorporating varying temperatures (10 °C, 20 °C, 40 °C) and relative humidity levels (100% RH, 80% RH, 60% RH, 40% RH), with strength
-
Ultra-low detection limit self-sensing nanocomposites with self-assembled conductive microsphere arrays for asphalt pavement health monitoring Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Linping Su, Yuepeng Jiao, Jianjiang Wang, Yunfeng Zhang, Ming Liang, Xue Xin, Xuehao Luan, Hao Wang, Zhenchao Chen, Lin Chen, Zhanyong Yao
Accurately monitoring micro-level strain within pavements poses a significant challenge in contemporary road engineering, limiting the effectiveness of early-stage pavement health diagnostics. Addressing this critical gap, this study introduces an innovative ultra-low detection limit sensor, specifically designed for intricate pavement health monitoring. It pivots on the unique structural design of
-
A general and simple method to disperse 2D nanomaterials for promoting cement hydration Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-18 Haijie He, Shuang E, Hongxia Qiao, Jie Yang, Caiyuan Lin, Chuang He, Peng Xu
-
Effectiveness of areca fiber and cement on the engineering characteristics of compressed stabilized earth blocks Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Shantanu Paul, Mohammad Shariful Islam, Namrata Chakma
This study investigates the potential of integrating areca fiber as a reinforcement agent in Compressed Stabilized Earth Blocks (CSEBs), used in combination with cement. Traditional earth-based construction methods, once prevalent, have seen a decline in industrialized nations with the advent of modern building materials. However, there is a growing resurgence in the use of earth-based materials, motivated
-
Fractal evolution model of proton spatial distribution in low water/binder cement-based composites (LW/B-CC) during early-age hydration process Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Tianyi Yin, Lang Jin, Kangning Liu, Dingqiang Fan, Enlai Dong, Rui Yu
-
Preparation of polyol from waste polyethylene terephthalate (PET) and its application to polyurethane (PU) modified asphalt Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Hao Liu, Zengping Zhang, Xinhe Yu, Shiyun Kan, Yu Luo, Kaibo Han, Yuzi Liang, Jiangping Gao
In this study, to reduce the accumulation of waste polyethylene terephthalate (PET) and decrease the dependence of polyurethane (PU) modified asphalt on petrochemicals, the waste PET-based PU modified asphalt was investigated. Three different molecular weight polyols were used to depolymerize waste PET for obtaining three types of waste PET polyol. Then, the three types of waste PET polyol were used
-
Study on long-term solidification of all-solid waste cementitious materials based on circulating fluidized bed fly ash, red mud, carbide slag, and fly ash Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Guoju Ke, Zheyu Li, Haishun Jiang
Under the condition of not adding external chemical activators, long-term performance-stable eco-cementitious materials without clinker can be produced through the synergistic effect among low-quality solid wastes such as circulating fluidized bed fly ash (CFBFA), red mud (RM), fly ash (FA), and carbide slag (CS). The findings indicate that over 56 days of hardening at a water to binder ratio that
-
Development of an ettringite-based low carbon binder by promoting the nucleation and Ostwald ripening process Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Xiang Liu, Pei Tang, Wei Chen
-
Coupling evaluation of carbon emissions and strength: Early carbonation curing of cement mortar containing incinerated sewage sludge ash (ISSA) Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Yinxue Li, Xiaolu Guo
A superposition of wastes utilization and early carbonation curing is attracting attention as a novel way for reducing carbon emission of cement production. In this work, the effects of early carbonation curing on the early properties and microstructure of mortars containing incinerated sewage sludge ash (ISSA) were explored, and the total carbon emissions of 1 m cement mortar products during the whole
-
RC beams flexurally strengthened with CFRP sheets combined with FRC layer for mitigating debonding failures Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Faisal Mukhtar, Akram Jawdhari
A hybrid strengthening system, comprising a carbon fiber reinforced polymer (CFRP) sheet combined with fiber reinforced concrete (FRC) layer is proposed in this study as a mitigatory solution to brittle debonding problems. Five reinforced concrete (RC) beams, comprising both control cases and those strengthened with the hybrid CFRP-FRC system at various FRP reinforcement ratios, were fabricated and
-
Influences of aggregate gradation on alkali-silica reaction of seawater and sea sand concrete Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Wenda Wu, Sixiang Kang, Qingnan Gong, Hongyu Yao, Kaijian Zhang, Hongfei Yang, Huang Li, Dehui Wang
The application of seawater and sea sand concrete (SWSSC) is beneficial for marine engineering, but the impact of aggregate gradation on its alkali-silica reaction (ASR) remains poorly understood. This study aims to bridge this gap by analyzing ASR products, pore characteristics and expansion rate of specimens. The test results reveal that ordinary concrete (OC) exhibits an inhibitory effect on ASR
-
A novel high-damping metaconcrete through designing resonant aggregates made from recycled rubber powder-coated coarse aggregate Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Huasheng Zhu, Xiaohui Zeng, Xuli Lan, Guangcheng Long, Youjun Xie, Jinhui Liu
-
Experimental study on the mechanical behavior and failure characteristics of rock analogs with filled internal fractures: A new method by sand powder 3D printing Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Xinzhe Wang, Lishuai Jiang, Yongyuan Li, Lei Zhang, Atsushi Sainoki, Hani Mitri S, Yiming Yang, Xiaohan Peng
Rock formations naturally contain intricate internal fractures due to various environmental factors. Such fractures result in significant weakening of the mechanical properties of the rock mass. As factures have different geometric features and fill material characteristics, it is difficult to replicate their complex behavior in the laboratory. This poses a serious limitation on the experimental investigation
-
Dynamic compressive behavior of environmentally friendly high-strength concrete: Experimental investigation and modelling Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Zhanbiao Chen, Hongshu Pan, Kexian Zhuo, Jiaying Su, Beixin Xie, Jiaxiang Lin, Yongchang Guo
-
Impact of temperature on mechanical properties and dimensional stability in a novel gradient pressure bamboo flattening technique Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Xianke Wang, Na Su, Xiaohan Chen, Benhua Fei, Xinxin Ma, Huanrong Liu, Hu Miao, Changhua Fang
Bamboo is an ideal engineering material for construction and furniture applications due to its rapid growth and exceptional mechanical properties. In recent years, bamboo flattening techniques have been extensively studied and applied. In this work, a straightforward and efficient method for flattening arc-shaped bamboo splits is proposed. Gradient pressure was used in the flattening process, increasing
-
Advancements in 3D printing of cementitious materials: A review of mineral additives, properties, and systematic developments Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Osama Zaid, Mohamed Hechmi El Ouni
3D printing technology revolutionizes construction by creating custom building components with increased efficiency and reduced waste. This paper reviews advancements in the 3D printing of cementitious materials, focusing on integrating mineral additives (MAs) like metakaolin, micro-silica, slag, and fly ash to address environmental and economic challenges linked with high-Portland cement content in
-
Finite element simulation and falling ball impact model for cement concrete pavement considering void under slab Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Yong Luo, Yuanwang Luo, Chen Wu, Mustafasanie M. Yussof
Under-slab voids are critical to traffic safety, The acoustic vibration method can be used to accurately determine whether the road surface is de-voided or not. This paper utilizes ABAQUS to construct models of concrete pavement panels with various parametric study. The fundamental vibration frequencies of these models are computed, and their characteristics are summarized. Additionally, a model of
-
Performance enhancement of coral aggregate concrete through pre-coating coral aggregate with cement-metakaolin-coral powder ternary slurry Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Linlin Zhou, Shuaicheng Guo, Guangyan Feng, Ting Zhang, Wenbo Ma, Caijun Shi, Deju Zhu
-
Understanding the influence of compressive strength, microstructure, and mechanism for metakaolin-based geopolymer under varying rest periods in the curing process Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Xiang Tian, Jia Shuai, Jie Wu, Qingyu Zhong, Zhunzhun Liu, Zuquan Jin
High-temperature curing applied to varying stages of dissolution, polycondensation, and reorganization in geopolymerization would influence the reaction kinetics, microstructure, and mechanical properties of geopolymer. This work first investigated the influence and mechanism of the rest period before high-temperature curing on metakaolin-based geopolymers (MKGs) properties. MKGs cured with 0, 2, 4
-
Arresting properties of polypropylene fiber-reinforced foamed concrete under wet-dry cycles Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Shutao Wu, Wuman Zhang, Yabo Zhang, Chenguang Wang
The crushing behavior of foamed concrete is utilized to assess the arresting properties of the Engineered Materials Arresting System (EMAS). In this study, polypropylene fibers (PPF) are used to improve the crushing behavior of foamed concrete with and without wet-dry cycles. The results indicate that the compressive strength, initial crushing stress and maximum energy absorption efficiency of foamed
-
Estimation by capillary water absorption method to building natural stones’ durability against freeze-thaw Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Jose Vercher, Júlia G. Borràs, Carlos Lerma, Ángeles Mas, Enrique Gil
In construction, the proper selection of natural building stones and the prediction of their pathology are significant, with freeze-thaw action being a primary cause of deterioration. Testing for freeze-thaw durability, being labour-intensive and time-consuming, often conflicts with construction timelines. The proposed methodology estimates natural stone behaviour against frost damage using quicker
-
Durability of bond between EBR-CFRP laminate and concrete after four years of natural outdoor and accelerated ageing exposures Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Aloys Dushimimana, José Sena-Cruz, Luís Correia, João Miguel Pereira, Susana Cabral-Fonseca, Ricardo Cruz
-
Shear strengthening of RC arches with FRP composites using EBR and EBROG methods: Experimental and theoretical study Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Elnaz Nagheh, Davood Mostofinejad, Alireza Saljoughian
This paper investigates the behavior of reinforced concrete (RC) arch beams with shear weaknesses strengthened with fiber-reinforced polymer (FRP) composites, using two different methods: the externally bonded reinforcement (EBR) and grooving method (GM) in the form of externally bonded reinforcement on grooves (EBROG) method. Additionally, two different patterns of shear strengthening including two-sided
-
Effect of magnesium oxide and copper oxide nanoparticles on UHPC properties under different curing conditions Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Seyyed Shayan Hashemi, Ahmad Ganjali, Aboozar Mirzakhani, Hamidreza Irani, Soudabeh Dezhampanah
During its service life, concrete may encounter harsh environmental conditions. Ultra high performance Concrete (UHPC) offers a potential solution due to its exceptional strength and durability. This study evaluates the impact of different content of slag 2.5, 5 and 10% and as well nano-particles of 0.5, 1 and 2% as replacement by weight of cement materials (without addition) and two different curing
-
Chloride binding mechanism in seawater-mixed UHPC Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Wei Zhang, Dawei Ding, Mengmeng Li, Tiao Wang, Hongyan Ma, Binmeng Chen, Hongxing Hu, Jizhou Chen, Xiaomin Liu, Dongshuai Hou
The rapid development of marine concrete structures and the sharp shortage of freshwater resources contribute to the wide investigation of seawater-mixed ultra-high-performance concrete (SWUHPC). However, few studies have investigated the chloride ions (Cl) binding mechanism of SWUHPC. Herein, the chloride binding experiments and molecular dynamics (MD) simulation were carried out to reveal the physically
-
A new bond-slip model for NSM FRP systems using cement-based adhesives through artificial neural networks (ANN) Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-17 Sareh Akbarpoor, Mohammadali Rezazadeh, Bahman Ghiassi, Fazel Khayatian, Keerthan Poologanathan, Honeyeh Ramezan Sefat, Marco Corradi
This paper introduced a novel Artificial Neural Networks (ANN)-based bond–slip model for the Near-surface mounted (NSM) FRP system using cement-based adhesives, as an alternative to epoxy adhesives due to their high-temperature resistance and moisture-durability problems, employing experimental data. Therefore, closed-form formulas were presented for key components of the bond-slip law, including maximum
-
Shrinkage induced crack control of concrete integrating synthetic textile and natural cellulosic fibres: Comparative review analysis Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Nayanatara Gamage, Yulin Patrisia, Chamila Gunasekara, David W. Law, Shadi Houshyar, Sujeeva Setunge
Shrinkage cracks pose significant challenges to the long-term durability of concrete structures, and it can be effectively address by incorporating various types of fibres. Synthetic textile fibres show a significant 10–50 % shrinkage reduction, while natural cellulosic fibres achieve a comparable 5–30 % reduction. This improvement is attributed to the bridging and anchorage effects between fibres
-
Hydrothermal zeolitization: Towards a paradigm shift for producing stronger and more sustainable construction materials Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 José Manuel Moreno-Maroto, Jacinto Alonso-Azcárate
-
Impact of rice husk ash on physico-mechanical, durability and microstructural features of rubberized lightweight geopolymer composite Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Abdullah M. Zeyad, Oğuzhan Yavuz Bayraktar, Bassam A. Tayeh, Ali Öz, İffet Gamze Mütevelli Özkan, Gökhan Kaplan
This study investigates the effects of incorporating rice husk ash (RHA) on the characteristics of lightweight geopolymer concrete (LWGC), which includes waste tire aggregate (WTA). This study utilized RHA to replace 15 % of ground blast furnace slag (GBFS) in LWGC. The LWGC also included WTA as a partial substitute for pumice aggregate, with varying rates of 10 %, 25 %, and 50 % by volume. In addition
-
Microwave absorption function on a novel one-part binary geopolymer: Influence of frequency, ageing and mix design Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Hang Yong-Jie, Heah Cheng-Yong, Liew Yun-Ming, Mohd Mustafa Al Bakri Abdullah, Lee Yeng-Seng, Lee Wei-Hao, Phakkhananan Pakawanit, Ong Shee-Ween, Tee Hoe-Woon, Hsu Cheng-Hsuan
This paper presents an innovative application of a one-part geopolymer for microwave absorption. The influences of frequency, ageing time and mixing formulations on the mechanical, dielectric, and microwave-absorbing performance of the one-part binary geopolymer using fly ash and ladle furnace slag were investigated. The mixing formulations included alkali activators-to-aluminosilicate sources, sodium
-
Characterization and mechanism study of sulfate saline soil solidification in seasonal frozen regions using ternary solid waste-cement synergy Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Hongbo Li, Xinrui Kang, Sheng Li, Long Shan, Zhe Zhang, Zi Wang
Infrastructures built on sulfate saline soil foundations in seasonal frozen regions are highly susceptible to salt-frost heave damage and salt corrosion. To address this issue, a method has been proposed utilizing a ternary blend of industrial solid waste materials - fly ash (FA), silica fume (SF), and brick powder (BP) - in conjunction with Portland cement (PC) for the solidification of sulfate saline
-
The improvement of various polyethylene on the high-temperature performance of degraded ground tire rubber modified asphalt and the compatibility enhancement mechanism of compatibilizer for composite modified asphalt Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Yong Jin, Xin Yu, Fuqiang Dong, Shiyu Wang, Yang Jiang, Jinli Lu
-
Experimental investigation into mechanical properties of inorganic-bonded bamboo composite for structural applications Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Xin Zhang, Mingyun Zhao, Ernian Zhao, Jinhui Liu, Qiaoling Liu, Shuming Li, Hang Yin, Chao Yang, Xiurong Li
Natural bamboo was regarded as a renewable building material, however, its application in engineering structures was limited owing to the inherently small geometric section and low load-bearing capacity. Herein, a novel bamboo-based composites prepared with magnesium oxysulfide (MOS) inorganic adhesive was proposed. The wettability and affinity of the inorganic adhesive were modification by the combination
-
Hydration mechanism of a sodium-doped phosphogypsum-based hemihydrate whisker (omongwaite) in supersulfated cement system Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Jiyun Huang, Jian Huang, Junjie Min, Ruoyun Lv, Hao Kuang, Hailong Hu, Rong Yang, Pei Tang, Qinglin Zhao, Shouwei Jian, Baoguo Ma
A sodium-doped phosphogypsum-based hemihydrate whisker (omongwaite) was synthesized via hydrothermal method within an hour under atmospheric pressure and the influence of omongwaite on the hydration mechanism of supersulfated cement (SSC) was studied. Isothermal calorimetry, X-ray diffraction (XRD), and field emission scanning electron microscopy (SEM) was used to investigate hydration process and
-
An AI-based partial explainable prediction of rubber concrete strength on mobile devices Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Xinxiang Jin, Xincong Yang, Yuexin Jiang, Ye Li
Recently, there has been a growing trend in utilizing waste rubber as a partial replacement for aggregates in concrete. This approach not only promotes the reuse of waste rubber but also addresses the shortage of natural aggregates. An issue arising from various compositions between rubber and the cement matrix is the accurate prediction and control of the mechanical properties of rubber concrete,
-
Vibrorheology of fresh cement-based materials with different compaction energy Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Tae Yong Shin, Jae Hong Kim
Vibration is commonly applied to the placement of cement-based materials to improve their fluidity and compactness. Appropriate compaction could ensure the designed performance by preventing the formation of voids and cavities within a structure. In recent years, the application of vibration has been extended to the rheology control of 3D printable concrete as well. While previous studies have reported
-
Potential for the liquid carbonation curing of Portland cement using sodium bicarbonate solutions Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Joonho Seo, Sungsik Choi, Jisoo Kim, H.K. Lee
Potential for the liquid carbonation curing of Portland cement (PC) using NaHCO solutions was investigated. The PC paste samples were sealed-cured or immersed in a 0%, 1%, 3%, 5%, or 10% NaHCO solution after undergoing one day of initial curing. The characterization and quantification of the samples and NaHCO solutions at various curing ages were performed using X-ray diffractometry, thermogravimetry
-
Experimental investigation on post-impact bond performance of carbon fiber-reinforced polymer tendons in ultra-high performance concrete Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Yawei Fang, Zhi Fang, Pengjie Liu, Yu Xiang, Xuhong Zhou
The bond performance of a carbon fiber-reinforced polymer (CFRP) tendon in ultra-high performance concrete (UHPC) deteriorates significantly under impact loads. However, the post-impact bond performance, which is crucial for the design and safety assessment of CFRP-UHPC structures after experiencing impact loads, remains unclear. This paper delved into the post-impact bond performance of a CFRP tendon
-
Shear modulus and damping ratio of granulated rubber-sand mixtures: Influence of relative particle size Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Fangcheng Liu, Kai Zheng, Bin Jia, Jun Yang, Mengtao Wu
Rubber-sand mixtures (RSM) have gained recognition as a valuable, lightweight, and cost-efficient energy-absorbing material with extensive potential application in engineering construction. However, the small-strain dynamic properties and prevailing mechanisms of RSM have not been thoroughly understood. This study conducted a series of resonant column tests on the small-strain dynamic modulus and damping
-
Creep and fracture of UHSC — A microindentation study Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Mahesh S., Anoop M.B., Saptarshi Sasmal
Creep and fracture behaviour of normal strength concrete was investigated by various researchers whereas, research on creep and fracture of Ultra-High-Strength Concrete (UHSC), i.e., concrete with 28-day compressive strength greater than 100MPa is scanty. Also, a detailed investigation of the creep–fracture interaction of UHSC has not been conducted.
-
Glass-based foam from alkali activation: A review on effect of primary foaming parameters on microstructure and density Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-16 Abba Musa Hassan, N.Muhamad Bunnori, S. Ramesh, Chou Yong Tan, Kim Hung Mo
Alkali activation techniques (AATs) are utilized to produce glass-based foams (GBFs) including glass or glass ceramic foam, due to their eco-friendly process. Numerous studies have examined the factors affecting the microstructure and density of GBFs during foaming processes. While secondary foaming parameters such as the heating rate, sintering temperature, and holding time have been extensively investigated
-
Performance of coal gangue concrete with fly ash and ground-granulated blast slag: Rheology, mechanical properties and microstructure Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-15 Dongsheng Zhang, Tao Zhu, Qingyi Ai, Mingjie Mao, Jiabin Li, Qiuning Yang
This paper aims to examine the effect of coal gangue aggregate (CGA), fly ash (FA), and ground-granulated blast slag (GGBS) on the rheological, mechanical and microstructure properties of concrete. The rheological properties, compressive strength, splitting tensile strength, flexural strength, and uniaxial tensile behaviour of coal gangue concrete (CGC) were determined, and the microstructure of the
-
Leach-resistant modified bamboo with fire-retardant and anti-mildew properties via in situ synthesis Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-15 Zhu Liu, Shoulu Yang, Zhongwei Wang, Ning Ji, Yan Qing
-
Characteristics of slurry-water mixing region in fractured rock mass grouting process: Experimental study Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-15 Lianzhen Zhang, Changxin Huang, Zhipeng Li, Xu Han, Qingsong Zhang, Yang Gao
Grouting is one of the most commonly used methods to control water inrush disasters in fractured rock mass. At present, most of the research on the diffusion process of fracture grouting is carried out on the hypothesize that the groundwater was completely displaced by the slurry, which is lack of sufficient theoretical basis. Therefore, a one-dimensional visual fracture grouting experimental system
-
Blast mitigation effects of TPU polymers-based inflated membrane structures under external explosion Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-15 Menglu Li, Shaobo Qi, Guangyan Huang, Lei Yang, Ke Yan, Jiaqi Bai
TPU polymers-based inflated membrane structures are a potential technology to protect pre-existing lightweight buildings, with the advantages of lightweight and simple building process. In this study, a series of field blast tests were performed for the structural response and blast load parameters to study the blast mitigation effect of the inflated membrane structures. The corresponding numerical
-
Innovative encapsulation of alkali activators in alkali-activated slag concrete: A sustainable strategy for regulating setting time and durability Constr. Build. Mater. (IF 7.4) Pub Date : 2024-04-15 Ming Sun, Xinya Mao, Xiaojian Gao, Youzhu Lin, Ke Li, Chaoying Zou
The scientific community has devoted considerable attention to alkali-activated slag binder systems, due to the low-carbon footprint and eco-friendly attributes. However, the regulation of setting time poses significant challenges to the widespread application in practical engineering environments. This study proposes an innovative approach to encapsulate alkali activators in capsules or tablets, followed