地聚物固化渣土室內(nèi)水－力性質(zhì)試驗研究

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中圖分類號：U414 文獻標(biāo)志碼：A 文章編號：1005-8249（2025）03-0049-05

DOI：10.19860/j.cnki.issn1005-8249.2025.03.009

Abstract：The urbanizationprocess in coastalareasofourcountryhasgenerateda largeamountof constructionwaste， occupying landand polluting the environment，becoming a pressing issueforlocal govermments toaddress.Geopolymer，asa newtype of greencementitious material，hasthepotential forsolidifying wasteandachieving recycling.Preparesgeopolymers withflyash，slagandalkali-activatedsolutionasrawmaterials incertainproportions.Indoorwater-andstrength-property testsof geopolymer-solidifiedconstruction wasteareconducted，andtheresultsarecomparedwiththoseoftraditionalcement andlimesolidified waste.Theresults show that undera specific curing period，the unconfinedcompressive strength（UCS）of geopolymer-solidifieddredgedsoilincreases with highergeopolymercontent.Whenthedosageofthesolidifyingagentremains constant，theUCS exhibitscontinuous growth with prolonged curing age.The aditionof asmallamount of limeor cement significantly enhances the water stability of modified geopolymer （geopolymer + cement/lime）- solidified dredged soil. This studyprovidestechnical supportfortheapplicationand promotionof modified geopolymersindredgedsoil stabilizationprojects.

Key words：geopolymer；fly ash；slag；construction waste；water stability test；unconfined compresive strength

0 引言

在沿海地區(qū)建設(shè)開發(fā)過程中存在著大量工程渣土無法被直接開發(fā)利用，因其具有含水率高、承載力低、孔隙比大、壓縮性強等特點，所以在處理工程渣土?xí)r，需要對其加固處理之后才能再利用[1-2] 。（剩余6290字）