{"title":"Quantifying the influence of textile fibre characteristics on drying-induced moisture transportation in textile fibre reinforced concrete","authors":"Hasika Dharmasooriya, Yuguo Yu, Chamila Gunasekara, Dilan J. Robert, Sujeeva Setunge","doi":"10.1016/j.ijmecsci.2025.110207","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a computational framework to determine time-dependent relative humidity transport coefficients in Textile Fibre-Reinforced Concrete (TFRC) made with cement and fly ash binders. These coefficients, influenced by capillary pore (CP) connectivity, depend on porosity and microstructural changes caused by textile fibre inclusions. Porosity evolution and CP connectivity are modelled by integrating hydration analysis with mixed effective medium theory, capturing the time-dependent transport properties across hierarchical concrete scales. The intrinsic relative humidity transport coefficient is derived to represent moisture transport mechanisms. A novel percolation function that quantifies CP connectivity changes induced by textile fibres is developed. This function links fibre characteristics to microstructural modifications, providing quantitative insights into reduced pore connectivity and enhanced drying resistance in TFRC. The findings reveal that textile fibres can reduce pore connectivity by up to 75 %, with fibre volumes below 0.5 % offering optimal drying resistance. The framework also optimises fibre content to improve water retention in TFRC under environmental drying. This model lays the groundwork for analysing drying shrinkage and improving the durability of TFRC in practical applications, addressing the long-term performance requirements of fibre-reinforced cementitious composites.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"293 ","pages":"Article 110207"},"PeriodicalIF":9.4000,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mechanical Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020740325002930","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents a computational framework to determine time-dependent relative humidity transport coefficients in Textile Fibre-Reinforced Concrete (TFRC) made with cement and fly ash binders. These coefficients, influenced by capillary pore (CP) connectivity, depend on porosity and microstructural changes caused by textile fibre inclusions. Porosity evolution and CP connectivity are modelled by integrating hydration analysis with mixed effective medium theory, capturing the time-dependent transport properties across hierarchical concrete scales. The intrinsic relative humidity transport coefficient is derived to represent moisture transport mechanisms. A novel percolation function that quantifies CP connectivity changes induced by textile fibres is developed. This function links fibre characteristics to microstructural modifications, providing quantitative insights into reduced pore connectivity and enhanced drying resistance in TFRC. The findings reveal that textile fibres can reduce pore connectivity by up to 75 %, with fibre volumes below 0.5 % offering optimal drying resistance. The framework also optimises fibre content to improve water retention in TFRC under environmental drying. This model lays the groundwork for analysing drying shrinkage and improving the durability of TFRC in practical applications, addressing the long-term performance requirements of fibre-reinforced cementitious composites.
期刊介绍：
The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering.
The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture).
Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content.
In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.
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