礦渣粉煤灰基地質(zhì)聚合物耐久性能研究

打開文本圖片集

中圖分類號：TU599 文獻標志碼：A 文章編號：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

地質(zhì)聚合物是一種通過特定工藝合成的先進無機材料，其核心在于利用堿激發(fā)劑激活硅鋁酸鹽類無機材料，如偏高嶺土、粉煤灰等工業(yè)副產(chǎn)品或廢

棄物，在常溫或相對溫和的溫度范圍（ ）內(nèi)發(fā)生化學(xué)反應(yīng)而制得[1]。（剩余5091字）