{"title":"可持续高性能注浆复合材料:粉煤灰增强聚氨酯/水玻璃快速止水","authors":"Ming-Yi Li, Wei-Xuan Wang, Xu Li, Lan Jia, Feng-Bo Zhu, Wen-Wen Yu","doi":"10.1007/s10853-025-11489-y","DOIUrl":null,"url":null,"abstract":"<div><p>Grouting materials are essential for controlling water inrush in underground engineering. While polyurethane/water glass (PU/WG) composites offer high early strength and elasticity, their use is limited by long curing times and high costs. To overcome these limitations, this study incorporates fly ash (FA), a coal-based solid waste, into PU/WG to develop eco-friendly FA/PU/WG composites (0–20 wt% FA). Systematic investigations revealed that FA addition reduced curing time by 37% (from 122 to 77 s) through alkaline activation, concurrently facilitating the formation of a hydrated sodium aluminosilicate (N–A–S–H) gel network that enhanced interfacial crosslinking. The maximum reaction temperature initially increased (0–10 wt% FA) due to accelerated curing kinetics but decreased at higher FA contents (15–20 wt%) owing to the improved thermal conductivity of Al₂O₃ in FA combined with incomplete FA activation. Microstructural analysis (SEM/EDS) confirmed the reinforcing role of FA in microspheres; however, excessive FA incorporation (> 15 wt%) led to a reduction in compressive strength, as limited Na<sub>2</sub>O content restricted FA activation. The optimal formulation (15%-FA/PU/WG) achieved a compressive strength of 67 MPa, ultra-low permeability (1.24 × 10<sup>–25</sup> cm/s), and negligible heavy metal leaching. By repurposing waste FA as a functional filler, this work reduces material costs while providing a sustainable, high-performance solution for water-sealing applications, bridging industrial waste recycling with advanced engineering needs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 37","pages":"16973 - 16983"},"PeriodicalIF":3.9000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sustainable high-performance grouting composites: fly ash reinforced polyurethane/water glass for rapid water sealing\",\"authors\":\"Ming-Yi Li, Wei-Xuan Wang, Xu Li, Lan Jia, Feng-Bo Zhu, Wen-Wen Yu\",\"doi\":\"10.1007/s10853-025-11489-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Grouting materials are essential for controlling water inrush in underground engineering. While polyurethane/water glass (PU/WG) composites offer high early strength and elasticity, their use is limited by long curing times and high costs. To overcome these limitations, this study incorporates fly ash (FA), a coal-based solid waste, into PU/WG to develop eco-friendly FA/PU/WG composites (0–20 wt% FA). Systematic investigations revealed that FA addition reduced curing time by 37% (from 122 to 77 s) through alkaline activation, concurrently facilitating the formation of a hydrated sodium aluminosilicate (N–A–S–H) gel network that enhanced interfacial crosslinking. The maximum reaction temperature initially increased (0–10 wt% FA) due to accelerated curing kinetics but decreased at higher FA contents (15–20 wt%) owing to the improved thermal conductivity of Al₂O₃ in FA combined with incomplete FA activation. Microstructural analysis (SEM/EDS) confirmed the reinforcing role of FA in microspheres; however, excessive FA incorporation (> 15 wt%) led to a reduction in compressive strength, as limited Na<sub>2</sub>O content restricted FA activation. The optimal formulation (15%-FA/PU/WG) achieved a compressive strength of 67 MPa, ultra-low permeability (1.24 × 10<sup>–25</sup> cm/s), and negligible heavy metal leaching. By repurposing waste FA as a functional filler, this work reduces material costs while providing a sustainable, high-performance solution for water-sealing applications, bridging industrial waste recycling with advanced engineering needs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":645,\"journal\":{\"name\":\"Journal of Materials Science\",\"volume\":\"60 37\",\"pages\":\"16973 - 16983\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-09-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10853-025-11489-y\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-025-11489-y","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Sustainable high-performance grouting composites: fly ash reinforced polyurethane/water glass for rapid water sealing
Grouting materials are essential for controlling water inrush in underground engineering. While polyurethane/water glass (PU/WG) composites offer high early strength and elasticity, their use is limited by long curing times and high costs. To overcome these limitations, this study incorporates fly ash (FA), a coal-based solid waste, into PU/WG to develop eco-friendly FA/PU/WG composites (0–20 wt% FA). Systematic investigations revealed that FA addition reduced curing time by 37% (from 122 to 77 s) through alkaline activation, concurrently facilitating the formation of a hydrated sodium aluminosilicate (N–A–S–H) gel network that enhanced interfacial crosslinking. The maximum reaction temperature initially increased (0–10 wt% FA) due to accelerated curing kinetics but decreased at higher FA contents (15–20 wt%) owing to the improved thermal conductivity of Al₂O₃ in FA combined with incomplete FA activation. Microstructural analysis (SEM/EDS) confirmed the reinforcing role of FA in microspheres; however, excessive FA incorporation (> 15 wt%) led to a reduction in compressive strength, as limited Na2O content restricted FA activation. The optimal formulation (15%-FA/PU/WG) achieved a compressive strength of 67 MPa, ultra-low permeability (1.24 × 10–25 cm/s), and negligible heavy metal leaching. By repurposing waste FA as a functional filler, this work reduces material costs while providing a sustainable, high-performance solution for water-sealing applications, bridging industrial waste recycling with advanced engineering needs.
期刊介绍:
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.