Sustainable Materials and Technologies最新文献

{"title":"Recovery of selenium from hazardous secondary resources: Technological breakthroughs and sustainable prospects","authors":"Xuan Cui ,&nbsp;Zhipeng Xu ,&nbsp;Jinxi Qiao ,&nbsp;Dong Li ,&nbsp;Xueyi Guo ,&nbsp;Qinghua Tian","doi":"10.1016/j.susmat.2025.e01835","DOIUrl":"10.1016/j.susmat.2025.e01835","url":null,"abstract":"<div><div>Selenium, a strategically vital dilute metal, faces challenges in direct extraction due to its dispersed occurrence in natural minerals, yet it remains indispensable for ubiquitous industrial applications. Secondary selenium resources such as copper anode slime and discarded solar cells exhibit acute toxicity and corrosiveness, posing severe ecological threats if untreated. Efficient separation and enrichment of selenium from these sources not only mitigate environmental contamination but also enable critical resource circularity. Despite advances in separation technologies, a systematic assessment of their current status remains lacking. This study comprehensively investigates the distribution characteristics and environmental risks of diverse selenium-bearing secondary resources, conducts comparative analysis of separation and recovery approaches tailored to different secondary resources streams, and pioneers a five-dimensional evaluation framework encompassing sustainability, development potential, economic viability, eco-friendliness, and production efficiency. These investigations deliver pivotal insights for overcoming technological bottlenecks and strategizing future development pathways, ultimately advancing selenium resource utilization toward green and high-value transformation with enhanced efficiency.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01835"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A road stud-based mechanical energy extractor with AI-supported monitoring for intelligent healthcare infrastructure","authors":"Shoukat Ali Mugheri ,&nbsp;Ali Azam ,&nbsp;Touqeer Aslam ,&nbsp;Ammar Ahmed ,&nbsp;Zutao Zhang ,&nbsp;Chengliang Fan ,&nbsp;Juhuang Song","doi":"10.1016/j.susmat.2025.e01791","DOIUrl":"10.1016/j.susmat.2025.e01791","url":null,"abstract":"<div><div>Urbanization and transport development boost energy consumption; however, roadway harvesters prioritize traffic infrastructure needs with limited attention to powering nearby facilities. This research proposed a road stud-based mechanical energy extractor (MEE) system that uses vehicle kinetic energy to power sensors for health monitoring at a smart health unit adjacent to the road. The proposed setup comprises four modules: an energy intake module that captures vehicular kinetic energy, a mechanical drive module using a rack-and-pinion mechanism for energy conversion, a power output module that generates electrical energy, and a power backup module that ensures stable energy storage and supply. Mathematical modeling, finite element analysis using ANSYS to evaluate structural stability under varying loads, simulation with MATLAB Simscape, laboratory experiments using a Mechanical Testing and Sensing (MTS) machine, and field testing were conducted to assess the performance of the proposed setup model. The proposed system achieved a maximum RMS voltage of 2.42 V at a resistance of 6 Ω and an optimum RMS power of 7.05 W at a resistance of 2 Ω with an excitation frequency of 4 Hz. In the field test, the system attained an RMS power of 26.6 W at a speed of 20 km/h with the same load resistance. Furthermore, a deep learning-based performance monitoring system using the Gated Recurrent Unit (GRU) framework to categorize the motion states (low, medium, and high) and forecast maintenance requirements, attaining a training precision rate of 99.9 %. This novel approach generates higher energy at low traffic speeds, ensures a continuous power supply to IoT-based health sensors, and offers enhanced durability and adaptability.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01791"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and performance assessment of polyurethane modified bitumen utilizing castor oil as a sustainable feedstock","authors":"Guoqiang Sun ,&nbsp;Ruiqing Sun ,&nbsp;Chen Yang ,&nbsp;Yiming Li ,&nbsp;Tong Lu ,&nbsp;Guangchen Wang","doi":"10.1016/j.susmat.2025.e01796","DOIUrl":"10.1016/j.susmat.2025.e01796","url":null,"abstract":"<div><div>The development of novel eco-friendly polyurethane bitumen modifiers utilizing sustainable bio-based resources was currently a research hotspot. Castor oil (CO), with its unique chemical structure (containing hydroxyl groups) and bio-renewable advantages, represented an ideal choice for preparing bio-based PU. This study aimed to develop a high-performance, environmentally friendly renewable castor oil-based polyurethane modified bitumen (CO-PUMB), using petroleum-based polyurethane modified bitumen (P-PUMB) as a comparison, to provide insights for advancing the greening of road construction materials. First, the PU composition (isocyanate index <em>R</em> = 1, hard segment content <em>C</em>_<em>h</em> = 20 %) was designed and optimized, and determine the optimal hydroxyl substitution ratio for <em>CO</em>-substituted petroleum-derived polytetrahydrofuran (PTMG). Subsequently, the preparation process (90 °C, 400 rpm, 2 min) and the curing process (100 °C, 2 h) were established. Then, five types of CO-PUMB and P-PUMB with varying PU contents were prepared and subjected to microscopic morphology observation, physical performance testing, and rheological testing. Fluorescence microscopy observation indicated that, benefiting from the trihydroxy structure and low molecular weight of castor oil (CO), CO-PU formed an earlier, more extensive, and more efficient chemically cross-linked network than P-PU at a lower PU content (≥40 %). In contrast, P-PU relied primarily on physical entanglement and required a higher PU content (60 %) to achieve cross-linking. Physical performance and rheological tests demonstrated that CO-PUMB, leveraging its dense chemical cross-linked network, exhibited significantly superior high-temperature stability, fatigue life, elastic recovery, and resistance to permanent deformation compared to P-PUMB. Additionally, increasing the CO/P-PU content enhanced the overall performance of CO/P-PUMB across the entire frequency (temperature) range. Notably, the performance improvement in CO-PUMB within the high-frequency (low-temperature) region was dependent on an effective crosslinking network, while that in P-PUMB relied on the high motional freedom generated by PTMG molecules. The experiments demonstrated that CO-PUMB incorporating optimized CO substitution (≥40 % CO-PU) represented an environmentally friendly, high-performance bitumen material with excellent high and low temperature performance and anti-fatigue capability.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01796"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemistry and feasibility verification of β-hemihydrate phosphogypsum in silico-aluminophosphate geopolymer","authors":"Mengxin Bu,&nbsp;Qingrui Yang,&nbsp;Biqin Dong,&nbsp;Xianle Hua,&nbsp;Yue Wang,&nbsp;Yanshuai Wang","doi":"10.1016/j.susmat.2025.e01811","DOIUrl":"10.1016/j.susmat.2025.e01811","url":null,"abstract":"<div><div>β-hemihydrate phosphogypsum (β-HPG) has been widely used in the preparation of low-carbon building materials and is regarded as one of the most effective and high-value-added approaches for the consumption and utilization of phosphogypsum (PG). To clarify the chemical properties of β-HPG in acidic and verify its feasibility for application in silico-aluminophosphate geopolymers (SAPGs), this study analyzed the influence mechanisms of typical acid activators, e.g., monoaluminum phosphate (MAP), phosphoric acid (PA), citric acid (CA), oxalic acid (OA), and tartaric acid (TA) on the hydration of β-HPG. The results showed that PA accelerated the dissolution and nucleation of β-HPG, while such nucleation was hindered in MAP. Molecular dynamics simulations further revealed that citric acid (CA) primarily adsorbs on β-HPG in a “ flat-lying “ configuration, oxalic acid (OA) mainly in a “standing” configuration, and tartaric acid (TA) predominantly in a “tilted” configuration. The adsorption energy followed the order of CA &gt; TA &gt; &gt; OA, which inhibited the dissolution and nucleation of β-HPG in CA. The hydration of β-HPG in OA was similar to that in pure water, and the dissolution amount of β-HPG in TA is the highest. However, the formation of large amounts of calcium tartrate complexes limited the availability of calcium ions for the nucleation of CaSO₄·2H₂O, resulting in the slowest nucleation of β-HPG in TA. The addition of β-HPG can significantly enhance the mechanical properties of SAPG activated by MAP and low-concentration PA (7 mol/L). Besides, the mechanical properties of OA-modified SAPG varies with different curing conditions. The feasibility of β-HPG and OA for enhancing the early-stage performance of SAPG was validated.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01811"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and life cycle assessment of self-adhesive wheat straw board with wet hot-pressing by enhanced H-bonding","authors":"Jianing Wang ,&nbsp;Linghua Yao ,&nbsp;Shengbo Ge ,&nbsp;Qiyu Zhang ,&nbsp;Mashallah Rezakazemi ,&nbsp;Jiachen Zuo ,&nbsp;Lihua Cheng ,&nbsp;Libo Zhang","doi":"10.1016/j.susmat.2026.e01885","DOIUrl":"10.1016/j.susmat.2026.e01885","url":null,"abstract":"<div><div>Traditional furniture boards often use large amounts of adhesives, which leads to environmental pollution and cost increase. The development of adhesive-free boards from agricultural and forestry waste is beneficial for technological innovation in the furniture market and the promotion of greener development. This study proposes a strategy to enhance hydrogen bond interactions at the molecular, supramolecular, and inter fiber structural levels of lignocellulosic biomass fibers. Wheat straw, a typical agricultural waste, was selected as the raw material. Alkaline treatment was used to remove lignin from the fibers, followed by zinc chloride treatment to fully swell the cellulose components. Wet pressing was then employed to fabricate high-strength boards, establishing a process for producing self-adhesive boards from agricultural waste, named as WS-A-Zn. WS-A-Zn demonstrated a tensile strength of 12.42 MPa, an internal bonding strength of 0.749 MPa, a flexural strength of 26.366 MPa, and a flexural modulus of 2.963 GPa, which are much higher than the mechanical properties of untreated wheat straw samples (WS) under the same hot-pressing conditions. Among them, the tensile strength of WS-A-Zn is 47 times that of WS. In addition, this board exhibits remarkable water resistance, thermal stability, degradation resistance, and reusability. The life cycle assessment revealed that electricity consumption is the primary factor driving the environmental impact of producing wheat straw hot-pressed boards. In summary, this study offers important insights into the environmentally friendly production of adhesive-free boards for the furniture industry, the high-value utilization of agricultural and forestry waste, and the molecular-level improvements in biomass material properties.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01885"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of rice husk biochar into Fe- and Mn-modified adsorbents: Contrasting mechanisms of metal oxides in tetracycline remediation","authors":"Rumeng Ye ,&nbsp;Kai Tian ,&nbsp;Yingzhe Xu ,&nbsp;Jianbiao Peng ,&nbsp;Xingbing He ,&nbsp;Minjie Deng ,&nbsp;Xueying Chu","doi":"10.1016/j.susmat.2026.e01880","DOIUrl":"10.1016/j.susmat.2026.e01880","url":null,"abstract":"<div><div>Current studies involve excessively complex synthesis of metal-modified biochar for the adsorption of tetracycline hydrochloride (TC), focusing on the effects of a single strategy and neglecting systematic comparisons. For environmental sustainability, Fe₃O₄/MnOₓ-modified rice husk biochar (BC) was simply synthesized by impregnation-precipitation. Batch adsorption experiments were conducted on BC, Fe-modified (BC-Fe), and KMnO₄-modified (BC-Mn) biochars to assess their TC removal efficiency. The mechanisms were investigated by FTIR, XRD, XPS, and UV–vis. Results demonstrated BC-Fe and BC-Mn exhibited significantly enhanced TC adsorption capacities compared with BC (170.06/266.94/132.86 mg/g, respectively). This improvement is attributed to increased specific surface area, refined microporous architecture, enriched O-containing functional groups, and the incorporation of Fe₃O₄/MnO_x nanoparticles. Divergent adsorption behaviors were observed: BC-Fe operates through an endothermic process dominated by diffusion, pore filling, electrostatic adsorption, coordination interactions, and hydrogen bonding; this process is pH-sensitive and further promoted by the presence of SO₄²⁻, PO₄³⁻ and CO₃²⁻ions. In contrast, BC-Mn exhibits a stable adsorption mechanism minimally affected by pH or ionic composition, combining diffusion, pore filling, and hydrogen bonding with catalytic oxidation (Mn (III), Mn (IV)) that disrupts and degrades the conjugated structure of TC. Fe/Mn-modified adsorption guides TC targeted remediation and rice husk sustainable utilization. By converting agricultural byproducts into high-performance environmental remediation materials, this study advances the ecological circular economy, realizing the dual value of waste recycling and pollution control.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01880"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of sustainable fibre-reinforced self-compacting geopolymer concrete with enhanced resistance to chemical attacks and shrinkage","authors":"Mahdi Heshmati,&nbsp;M. Neaz Sheikh,&nbsp;Muhammad N.S. Hadi","doi":"10.1016/j.susmat.2026.e01874","DOIUrl":"10.1016/j.susmat.2026.e01874","url":null,"abstract":"<div><div>In the pursuit of sustainable construction materials, the development of self-compacting geopolymer concrete (SCGC) has emerged as a promising alternative to conventional cement-based concrete. However, its brittle behaviour, susceptibility to cracking, and need for elevated-temperature curing limit the structural applications of SCGC, particularly in aggressive environments. This study developed high-strength fibre-reinforced SCGC (FRSCGC) as a novel material, cured at ambient conditions to improve ductility, chemical resistance, and drying shrinkage. Stainless steel fibres with high tensile strength were used to develop FRSCGC. The durability of SCGC and FRSCGC was evaluated through sulphate and acid resistance tests, rapid chloride permeability test (RCPT), and drying shrinkage measurements. Experimental results showed a significant improvement in the resistance of SCGC to sulphate, acid, and chloride ion penetration with the addition of stainless steel fibres. Compared to SCGC, drying shrinkage of FRSCGC was reduced from 2360 μɛ to 1420 μɛ, indicating superior dimensional stability. Microstructural analysis revealed that the crack-bridging mechanism of stainless steel fibres enhanced the interfacial transition zone and mitigated the progression of chemical-induced damage, which improved the mechanical and durability properties of FRSCGC under aggressive environments. The findings of this study highlight the potential of FRSCGC as a sustainable and durable construction material for building infrastructure in aggressive environments.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01874"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lead-free SnTe thermoelectrics: Materials design, device engineering, and sustainable energy perspectives","authors":"Ubaid Ur Rehman ,&nbsp;Kashaf Ul Sahar ,&nbsp;Chun-Ming Wang","doi":"10.1016/j.susmat.2026.e01863","DOIUrl":"10.1016/j.susmat.2026.e01863","url":null,"abstract":"<div><div>This review highlights recent advancements in SnTe-based thermoelectric materials, emphasizing their potential as environmentally friendly alternatives to conventional PbTe systems. SnTe offers several advantages, including a rock-salt crystal structure and favorable electronic band characteristics. However, intrinsic limitations such as high native hole concentration due to Sn vacancies and relatively large lattice thermal conductivity constrain its thermoelectric figure of merit (<em>ZT</em>). This review outlines key strategies to address these challenges, including band convergence via alloying, resonant level doping, carrier concentration optimization, and defect engineering. Methods to reduce lattice thermal conductivity such as nanostructuring and multi-scale phonon scattering are also examined. Advances in doped alloys, hybrid composites, and low-dimensional SnTe systems with <em>ZT</em> values exceeding unity are summarized, highlighting the role of microstructural design. Computational developments, including first-principles modeling, carrier transport analysis, defect chemistry, and emerging machine learning frameworks, are discussed in the context of accelerating material optimization. At the device scale, considerations such as thermoelectric module architecture, contact engineering, thermal/electrical stability, and system-level integration are reviewed. Environmental sustainability, cost-effectiveness, and scalable synthesis routes are evaluated to gauge commercial viability. Current limitations and potential research pathways are presented to support progress in lead-free SnTe thermoelectric technologies.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01863"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable nitrogen-self-doped coffee ground-derived activated carbon for efficient adsorption of short- and long-chain PFAS: Mechanistic insights and practical applications","authors":"Poonnawit Hanphaiboon ,&nbsp;Xuejiao Liu ,&nbsp;Riaz Ahmad ,&nbsp;Jie Zhang ,&nbsp;Beibei Pan ,&nbsp;Yin Wang","doi":"10.1016/j.susmat.2026.e01857","DOIUrl":"10.1016/j.susmat.2026.e01857","url":null,"abstract":"<div><div><em>Per</em>- and polyfluoroalkyl substances (PFAS), persistent and toxic pollutants, demand innovative, sustainable water treatment. This study introduces a steam-activated carbon from waste coffee grounds (CGAC) utilizing a chemical-free, nitrogen self-doping strategy for efficient PFAS removal. Raw coffee grounds, inherently rich in nitrogen (2.70 wt%), underwent pyrolysis and steam activation, yielding CGAC with high surface area (∼1200 m²/g), hierarchical porosity, and retained nitrogen (1.76 wt%). Batch experiments showed that CGAC achieved nearly 100 % PFOS and &gt; 75 % PFBS removal at a low dose of 0.025 g/L, outperforming commercial coconut and bamboo activated carbons, with adsorption capacities of 286.1 mg/g (PFOS) and 32.4 mg/g (PFBS). CGAC exhibited excellent reusability, maintaining &gt;90 % PFOS removal over four ethanol regeneration cycles. Water matrix studies revealed that divalent cations (Ca²⁺, Mg²⁺) enhanced PFAS uptake via cation bridging, while humic acid reduced adsorption through competitive interactions. CGAC maintained high PFOS selectivity even under anionic competition (Cl⁻, NO₃⁻), and competitive adsorption further confirmed suppressed short-chain PFBS uptake in the presence of PFOS. Mechanistic analyses showed that PFOS and PFBS follow fundamentally distinct adsorption pathways on the same surface: PFOS adsorption (Langmuir, pseudo-first-order, entropy-driven) was dominated by hydrophobic interactions facilitated by low desolvation energy and exhibited minimal pH dependence. Conversely, PFBS adsorption (Freundlich, pseudo-second-order, enthalpy-driven) relied on electrostatic attraction and hydrogen bonding, consistent with its pH sensitivity and cation-mediated enhancement. By explicitly demonstrating this dual-mechanism capability on a single waste-derived carbon surface, CGAC synergistically resolves the hydrophobic-electrostatic trade-off in PFAS adsorption. This leverages CG's intrinsic chemistry for a chemical-free, cost-effective, and scalable PFAS remediation solution, while simultaneously valorizing coffee waste.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01857"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolution of drying shrinkage and water migration of concrete: Effects of pore feature and water desorption of recycled fine brick aggregate","authors":"Juntao Dang ,&nbsp;Huiqiang Jing ,&nbsp;Jun Zhao ,&nbsp;Wei Zhang ,&nbsp;Jianzhuang Xiao ,&nbsp;Hexin Zhang","doi":"10.1016/j.susmat.2025.e01789","DOIUrl":"10.1016/j.susmat.2025.e01789","url":null,"abstract":"<div><div>Porous nature and water desorption capacity of recycled fine brick aggregate (RFCB) is crucial to the long-term evolution of shrinkage behavior of recycled concrete (RC) exposed to the dry environment. Thus, this study assessed both the pore feature and water desorption of RFCB with different particle sizes (including 0–5 mm, 0.075–5 mm and 0.15–5 mm), followed by the effect of particle size, replacement level and initial saturation degree of RFCB on the microstructure, strength development, water migration and drying shrinkage of RC. Results shown that the pore feature of RFCB yielded coarse pore size and high porosity with an increase in particle size, which in turn endowed a superior water desorption potential. Microstructure revealed that incorporating porous RFCB into RC increased the pore volume, porosity and total capillary pores, whereas performed better in improving the average pore diameter and interface bonding. The presence of RFCB imposed a deteriorate effect on the compressive strength, relative humidity, electrical resistivity and drying shrinkage, and this degraded effect exacerbated as particle size and replacement ratio raised. However, introducing full saturation degree of fine RFCB was beneficial for mitigating the relative humidity reduction, electrical resistivity increment and drying shrinkage development. Finally, the drying shrinkage-prediction model considering RFCB coefficients was developed based on the CEB-FIP model, which was helpful for the design of low-carbon and durable RC.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01789"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}