地聚物固化渣土室内水－力性质试验研究

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中图分类号：U414 文献标志码：A 文章编号：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

在沿海地区建设开发过程中存在着大量工程渣土无法被直接开发利用，因其具有含水率高、承载力低、孔隙比大、压缩性强等特点，所以在处理工程渣土时，需要对其加固处理之后才能再利用[1-2] 。（剩余6290字）