三元矿物材料-玻璃纤维对地聚合物力学性能影响分析

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中图分类号：TU528 文献标志码：A 文章编号：1005-8249（2026）02-0054-07

DOI：10.19860/j.cnki.issn1005-8249.2026.02.009

Analysis of the Effects of Ternary Mineral Materials and Glass Fibers on the Mechanical Properties of Geopolymers

SHANG Jing'，TAO Wenbin²，WANG Wei1，XIE Tao

（1. Jiangsu Province Hospital（First Afiliated Hospital with Nanjing Medical University） General Affairs and Infrastructure Department，Nanjing 210029，China；2. Southeast University， Nanjing 2100O0，China） Abstract：Toaddresstheslowearlystrengthdevelopmentand inadequate long-term strengthofflyash-based geopolymers， slagpowderandsilicafume wereemployed topartiallyreplaceflyash，investigatingtheinfluenceofaterarymineralmaterial combinationonthecompresive strength，splitingtensilestrength，andflexural strengthofthegeopolymer.Furthermore，the enhancing efectofglassfibersonthemechanical propertiesoftheoptimal mineralcompositionwasanalyzed.Theresults indicatethatwiththereductionofflyashcontentandtheincreaseof slagpowdercontent，themechanical strengthof the geopolymerfirst increasedandthendecreased.Slag powdercontributed topromoting earlystrength development，with the composition containing 40% fly ash and 60% slag powder exhibiting the best performance. Substituting fly ash with 10% silica fumefurtherimprovedthemechanicalproperties，increasingthecompresivestrength，splittng tensilestrength，andflexural strength of the mixture containing 10% silica fume， 30% fly ash，and 60% slag powder by 13.5% ， 10.4% ，and 11.4% ， respectively.Withtheincrease inglassfibercontent，thecompressive，spliting tensile，andflexural strengthsalsoshowedan initial increase follwed bya decrease，with the optimal enhancement observedat a fiber content of 1.0% ，resulting in improvements of 9.4% ， 17.6% ，and 16.0% ，respectively. This study can provide a reference for the preparation of high - performance geopolymer materials.

Key words： fly ash； slag powder； silica fume;glass fiber；geopolymer； mechanical strength

0 引言

碱激发粉煤灰基地聚合物是一种具有潜力的水泥混凝土替代材料，但其在常温碱性环境中反应动力学缓慢，导致早期强度发展不足；同时，受限于反应程度，微观结构往往较为疏松，制约了长期强度的进一步提升[1]；此外，在地聚合过程中水分迁移与蒸发易引发显著的干燥收缩与体积变形[2]，制约了其大规模工程应用。（剩余9062字）