矿渣粉煤灰基地质聚合物耐久性能研究

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中图分类号：TU599 文献标志码：A 文章编号：1005-8249（2025）02-0033-05

DOI：10.19860/j.cnki.issn1005-8249.2025.02.006

Abstract：Thedurabilityofslagflyash geological polymerneeds tobeimproved indealing withcomplexenvironmentssuchas carbonization，frezingandthawingcycleandchlorideionpenetration.Therefore，thedurabilitypropertiesofslagflyashis proposed.Byanalyzingtheratioofraw materialofslagflyashbase polymer，the blastfurnace slagand kaolinadded to thefly ashacordingtodiferentproporions，studytheinfluenceofdiferentatioofthe materialdurability，preparegeologicalpolyer samples，respectivelyforflyash，blast furnace slag enhancedandkaolinoptimization，andthecompressiveperformancetest andfreeze－thawcycle test，comprehensivelyevaluate thechangeof materialdurabilityovertime.Theresultsshowthat compared with the test results of fly ash and blast furnace slag， the hump of XRD appeared in ，and the number of sharpdiffrctionpeaksincreased.Aftertherepeatedfreee－thawcycles，theappearanceof theoptimized kaolin was minimized，the weight loss rate （ 1 . 0 % ） ）and the mechanical performance retention rate （ 82 % ）are higher than other ratios， showingtheoptimaldurabilityperformanceandprovidingthebasisfortheratiooptimizationofsuch materialsinpractical engineering.

Key words：fly ash； geopolymer；durability performance；compressive strength； freeze-thaw cycle

0 引言

地质聚合物是一种通过特定工艺合成的先进无机材料，其核心在于利用碱激发剂激活硅铝酸盐类无机材料，如偏高岭土、粉煤灰等工业副产品或废

弃物，在常温或相对温和的温度范围（ ）内发生化学反应而制得[1]。（剩余5091字）