Construction and Building Materials最新文献

{"title":"An investigation on the asphalt with enhanced damping properties: Development, performance evaluation and mechanisms","authors":"Wei Duan ,&nbsp;Ruikun Dong","doi":"10.1016/j.conbuildmat.2025.141125","DOIUrl":"10.1016/j.conbuildmat.2025.141125","url":null,"abstract":"<div><div>The present pavement noise-reduction approaches impair seriously the durability of pavement, therefore improving damping properties of pavement materials to attenuate noise is a developing trend. This study investigated an optimal component formulation designed to enhance damping properties of asphalt using recycled butyl rubber (RIIR) and styrene-butadiene-styrene (SBS) as modifiers. The pavement performance was examined to analyze the contributions of components in the asphalt through general properties, multiple stress creep and recovery (MSCR), bending beam rheometer (BBR) and segregation tests. Meanwhile, the microscopic morphology of asphalt was observed by Fluorescent Micrograph (FM) and Scanning Electron Microscope (SEM) in connection with the damping properties. The microscopic properties of asphalt were characterized using Gel Permeation Chromatograph (GPC), Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC). The results indicate that the combination of RIIR, SBS and sulfur contributes to enhance damping properties and pavement performance of asphalt. FM images present the interlocking continuous phases with interspersed elastic molecules and SEM images exhibit the folded mesh structures, which is the ideal morphology for the asphalt with enhanced damping properties. The tests on molecular structures, functional groups and thermal properties demonstrate that the particular sulfurized crosslinking structures restrict flow deformation and provide elasticity in asphalt, thereby manifesting in the enhanced damping viscous response and damping elastic response macroscopically. Consequently, these findings highlight the potential of damping compound-modified asphalt, promoting the advancements in noise-reduction pavement materials.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141125"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High temperature degradation mechanism, mechanical properties and constitutive model of reed straw reinforced brick aggregate concrete","authors":"Yuanyuan Zhao ,&nbsp;Kejie Jiang ,&nbsp;Xuanteng Lu ,&nbsp;Dongze Xie","doi":"10.1016/j.conbuildmat.2025.141276","DOIUrl":"10.1016/j.conbuildmat.2025.141276","url":null,"abstract":"<div><div>The application of natural plant fibers in concrete promotes the sustainable development of green buildings, but its high temperature resistance is an important factor that must be considered in practical engineering applications. In this study, the high-temperature degradation mechanism of brick aggregate reed straw concrete (BARSC) was analyzed by simultaneous thermal analysis, X-ray diffraction and scanning electron microscopy, the mechanical properties of concrete before and after high temperature were tested, an axially compressed constitutive model was established, and a life cycle assessment of its production process was conducted. The results show that: At 20 ℃-500 ℃, cracks appear in the reed-matrix ITZ due to moisture evaporation, dehydration and decomposition of C-S-H gel, and shrinkage, pyrolysis and carbonization of reed straw. At 500 ℃-900 ℃, due to the phase change and expansion of SiO_2, the transformation of reed straw into ash and the decomposition of CaCO₃, the concrete becomes sparse and porous, the brick-matrix ITZ bond fails, and the structural integrity is lost. Reed straw increases the tensile strength of BARSC by a maximum of approximately 28.6 %. For every 1 % increase in reed straw content, the carbon emissions of concrete are reduced by 4.21 kg/m³. The combination of brick aggregates and reed straw makes comprehensive use of industrial and agricultural waste, providing a new method for carbon emission reduction and solid waste recycling in the construction industry.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141276"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the mechanical properties of low-quality sheep wool yarn","authors":"Giusi Midolo ,&nbsp;Marta Del Zoppo ,&nbsp;Massimo Durante ,&nbsp;Dario De Fazio ,&nbsp;Francesca Valenti","doi":"10.1016/j.conbuildmat.2025.141220","DOIUrl":"10.1016/j.conbuildmat.2025.141220","url":null,"abstract":"<div><div>In response to growing environmental awareness and the need for sustainable practices, the construction sector is seeking innovative solutions to reduce its environmental impact. This study examines the use of low-quality sheep wool, typically discarded by the textile industry as a potential resource for the construction sector. Unlike natural plant fibers which must be specifically cultivated sheep wool is an agricultural by-product produced in large quantities without a designated end-use, despite its potential applications. The primary objective is to assess the mechanical properties of sheep wool yarn, tested through various experimental methods, to evaluate its potential as a reinforcement in biocomposites. The research investigates yarn performance in both its dry state and after impregnation with a bio-based resin. Two testing configurations were employed for dry yarns: capstan grips (DYR) and straight sample configurations (DYC). For impregnated yarns, two polymerization strategies were assessed: with pre-tensioning (IYT) and without pre-tensioning (IY). Results revealed no significant differences between the two testing configurations for dry yarns (DYR and DYC). The pre-tensioned impregnated yarn (IYT) exhibited the best mechanical performance, with tensile strength increasing from 89.45 MPa (average of DYR and DYC) to 142.92 MPa, and elastic modulus rising from 1.30 GPa to 11.07 GPa. These improvements are attributed to better fiber alignment and structural compaction promoted by the pre-tensioning process. These findings demonstrate the potential of waste wool as a reinforcement material for construction applications. Despite promising results, challenges remain. Wool’s hygroscopic nature affects fiber–matrix adhesion, and further research is needed to evaluate compatibility with various polymer matrices. Addressing these issues could establish waste wool as a sustainable resource, aligning with global demand for circular economy and eco-friendly materials.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141220"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigation on GFRP double-bolt single-lap joints subjected to low-velocity impact and post-impact tension","authors":"Lifu Wang,&nbsp;Yun Wan,&nbsp;Chaojiang Li","doi":"10.1016/j.conbuildmat.2025.141261","DOIUrl":"10.1016/j.conbuildmat.2025.141261","url":null,"abstract":"<div><div>Glass fiber reinforced polymer (GFRP) composite joint structure has garnered increasing attention in structural reinforcement and bridge engineering. However, its inferior impact resistance and inherent brittleness result in a significant performance degradation when subjected to impact and sudden loading. This paper presented an experimental investigation on the damage mechanisms and failure behaviors of GFRP double-bolt single-lap joints (DBSLJs) under low-velocity impact (LVI) and post-impact tensile tests. The joints with three bolt spacings were designed to conduct impact between bolts at four incident energies, and their bolt load distribution was analyzed quantitatively. The results show that a short bolt spacing can induce impact crack propagation into the bolt holes, thereby reducing the impact resistance and residual strength. Excessively long impact cracks can induce brittle fracture in the impact region, which occurs exclusively in the bottom plate due to the significantly larger crack length compared to that in the upper plate. Moreover, the load distribution ratio shows that the impact on the joints exacerbates uneven bolt load distribution, particularly with increasing impact energy.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"476 ","pages":"Article 141261"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the flexural behavior of engineering geopolymer composite and concrete composite beams combined with acoustic emission technology","authors":"Weitao Li,&nbsp;Caiwang Tai,&nbsp;Dong Zhao,&nbsp;Shan Li","doi":"10.1016/j.conbuildmat.2025.141203","DOIUrl":"10.1016/j.conbuildmat.2025.141203","url":null,"abstract":"<div><div>Engineered geopolymer composite (EGC) is an emerging and environmentally friendly cementitious material that shows great potential for application. The purpose of this study is to reveal the effect mechanism of EGC on the bending performance of composite beams. This is achieved by comparing and analyzing the bending failure characteristics of EGC and OPC composite beams with different EGC layer thicknesses and reinforcement ratios. The acoustic emission (AE) technique was introduced to monitor the damage characteristics of the composite beams during flexural loading, and the influence of diverse parameters on the failure mode, cracking and yield strength, energy dissipation capacity, and AE characteristics was assessed comprehensively in this study. The results demonstrate that the EGC layer in the composite beam exhibits excellent crack control under bending load, presenting a multi-cracking characteristic. The capabilities for load-bearing and energy dissipation of the beam are enhanced as the thickness of the EGC layer and reinforcement ratio increase. In the damage process of EGC, the AE amplitude follows a power-law distribution, and the distribution of AE events in the EGC layer is denser than that in the OPC layer. The theoretical calculation model of the bearing capacity established in this study has extensive applicability and can accurately predict the cracking behavior. This study provides scientific evidence for improving the flexural performance of concrete structures using EGC and has promoting significance for broadening the application scope of composite materials.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141203"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste glass powder as silica source for the activator in the preparation of alkali activated SiMn slag mortar","authors":"R. Navarro ,&nbsp;E.G. Alcocel ,&nbsp;I. Sánchez ,&nbsp;M.A. Aguirre ,&nbsp;E. Zornoza","doi":"10.1016/j.conbuildmat.2025.141237","DOIUrl":"10.1016/j.conbuildmat.2025.141237","url":null,"abstract":"<div><div>The main objective of this work is to improve the performance of alkali activated ground granulated SiMn slag mortars, avoiding the use of waterglass for the preparation of a more sustainable alkali activator. In this work the sustainable activator was used to develop masonry mortars whose binder is formed by granulated SiMn slag as a solid precursor, and an alternative alkaline activator which was obtained from waste glass powder by a hydrothermal process, varying the NaOH concentration, duration and temperature of the process. The mortars samples were characterized for workability, setting time, strength, bond strength (adherence to masonry bricks), shrinkage and porosity. Life cycle analysis was carried out to assess the environmental impact of replacing Portland cement and commercial solutions with the use of SiMn slag and these alternative activators. Mortars manufactured with the alternative activator have similar setting times, lower compressive strength (reaching values between 35 and 44 MPa after 90 days) and greater porosity compared to those manufactured with commercial activators. The different behaviours observed depending on the different alternative activators used can be attributed to the different quantity of Si that each of them presents. All the studied mortars manufactured with an alternative activator have more than sufficient properties to be used as masonry mortars. These mortars are manufactured using a majority percentage of waste (SiMn slag and glass waste as a source of silica for the activator), so they represent a sustainable alternative in terms of reducing raw materials, energy, and carbon footprint in their production.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141237"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GPR image denoising based on unpaired data: Enhancing defect detection inside tunnels by TID-CycleGAN","authors":"Shishuai Li,&nbsp;Shirong Zhou,&nbsp;Wanghao Lu,&nbsp;Zhong Zhou","doi":"10.1016/j.conbuildmat.2025.141179","DOIUrl":"10.1016/j.conbuildmat.2025.141179","url":null,"abstract":"<div><div>Detection of defects in tunnel linings is essential for ensuring structural safety and long-term stability. However, noise in ground penetrating radar (GPR) images significantly reduces the accuracy of defect detection. In this study, we propose a migration denoising model, TID-CycleGAN, based on an unpaired dataset. By incorporating the enhanced skip connection module (ESCM), the model efficiently fuses spatial and frequency domain information while preserving defect details during the denoising process. Experimental results indicate that TID-CycleGAN outperforms other models in peak signal-to-noise ratio (PSNR) and structural similarity index (SSIM), notably improving the visual quality of radar images. Furthermore, by optimizing the mixing ratio of denoised and real images, a high-quality defect detection dataset is developed, achieving an optimal balance between background noise and defect information. Detection comparison experiments demonstrate that cutting-edge models such as YOLOv11 achieve average accuracies exceeding 90 %, meeting the requirements for tunnel inspection tasks and enabling automated detection of defects in tunnel linings.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141179"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the pozzolanic reactivity of volcanic rock powder at different calcination temperatures and the performance of sodium silicate-activated volcanic rock powder geopolymer","authors":"Fanyuan Mu ,&nbsp;Shuang Zou ,&nbsp;Zhenping Sun ,&nbsp;Jingbin Yang","doi":"10.1016/j.conbuildmat.2025.141257","DOIUrl":"10.1016/j.conbuildmat.2025.141257","url":null,"abstract":"<div><div>This study evaluated the pozzolanic reactivity of volcanic rock powder (VRP) from Xizang, China, calcined at various temperatures. The reactivity was assessed using alkali leaching solubility tests and the R³ method. Results indicate that 700 °C represents the optimal calcination temperature for enhancing VRP reactivity, as it promotes the transformation of quartz and feldspar phases into amorphous phases, significantly improving pozzolanic reactivity. A VRP-based geopolymer was prepared using 700 °C calcined VRP as a precursor and sodium silicate (SS) as an alkali activator. The compressive strength of the resulting mortars was measured, and the hydration process and reaction mechanisms of the SS-activated calcined VRP were investigated by Mercury Intrusion Porosimetry (MIP), X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Isothermal Calorimetry, and Thermogravimetry (TG) analysis. The findings reveal that optimal activation was achieved with an SS modulus of 1.8 and a dosage of 10 %, yielding high early strength and continuous strength development in the later stages, concurrently with the formation of a dense microstructure and a uniform pore size distribution. Furthermore, this research elucidates the critical interplay between the content of chemically bound water and the polymerization degree of N-A-S-H in governing compressive strength, providing a mechanistic understanding of strength development in these geopolymers. These findings not only highlight the potential of Xizang’s VRP as a sustainable precursor for geopolymers but also contribute to the broader understanding of geopolymers.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141257"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elaborately-designed high-service performance carbon refractory brick through refreshing the pore structure","authors":"Saisai Li ,&nbsp;Yi Ding ,&nbsp;Jiaxuan Xin ,&nbsp;Gang Qi ,&nbsp;Minghui Li ,&nbsp;Ruoyu Chen ,&nbsp;Haijun Zhang","doi":"10.1016/j.conbuildmat.2025.141226","DOIUrl":"10.1016/j.conbuildmat.2025.141226","url":null,"abstract":"<div><div>In this study, the microporous structure of carbon refractory bricks was enhanced through the incorporation of innovative graphitic-silica microspheres with high chemical reactivity. These microspheres were synthesized via hydrothermal carbonization and catalytic graphitization, using silica sol and sucrose wastewater as raw materials. The elemental distribution and morphology of the products obtained through hydrothermal carbonization and catalytic graphitization were analyzed. Building on these findings, the effects of varying graphitic-silica microsphere contents on the phase composition, microstructure, physical properties, molten iron corrosion resistance, and high-temperature carbon dioxide corrosion resistance of the samples were investigated. Compared to samples without graphitic-silica microspheres, those containing the microspheres exhibited in-situ formation of SiC whiskers within the pores, creating a network structure that effectively subdivided the macropores and increased microporosity. Furthermore, these samples demonstrated significant improvements in density, compressive strength, thermal conductivity, and resistance to both molten iron corrosion and high-temperature carbon dioxide corrosion. As the microsphere content increased from 2 wt% to 8 wt%, the sample properties initially improved and then declined. At the optimal microsphere content of 4 wt%, the samples achieved a porosity of 7.5 %, a density of 1.78 g/cm³ , a compressive strength of 69.4 MPa, a thermal conductivity of 11.53 W/m·K, and excellent resistance to molten iron and carbon dioxide corrosion. This study offers an effective approach to improving the performance of carbon refractory bricks.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"475 ","pages":"Article 141226"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and analytical evaluation of stabilizing bauxite residue bearing layers using cement kiln dust","authors":"Mohamed Farid Abbas ,&nbsp;Sultan Almuaythir","doi":"10.1016/j.conbuildmat.2025.141044","DOIUrl":"10.1016/j.conbuildmat.2025.141044","url":null,"abstract":"<div><div>The accumulation of bauxite residue (BR), an alkaline byproduct of the Bayer process, presents an environmental challenge. This study introduces an innovative approach to address the disposal dilemma by utilizing cement kiln dust (CKD), a byproduct of cement manufacturing, as a stabilizing agent for BR, aiming towards an integrated circular economy in geotechnical applications. To achieve this goal, an extensive experimental program was executed to compare the particle size (PS), Atterberg limits (AL), moisture–density (MD), volume change (VC), and unconfined compressive strength (UCS) characteristics of treated and untreated BR. The results indicate enhancements in the BR-CKD properties including improvements in particle coarseness, reduction in swell potential, and increase in unconfined compressive strength; however, the plasticity of the mixtures remained unchanged, and the MD relationships deteriorated. An analytical evaluation of the allowable bearing capacity of the BR-CKD bearing layers showed an improvement of almost 3.5 times that of the untreated layers at a CKD% of 7.5 %.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"476 ","pages":"Article 141044"},"PeriodicalIF":7.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}