混掺垃圾飞灰和二次铝灰活性粉末混凝土性能研究

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DOI：10.19860/j.cnki.issn1005-8249.2024.01.008 YANG Junchao12，PENG Ling3，CHEN Yongqiang3，WANG Hui4 （1.Hebei University of Architecture， School of Civil Engineering， Zhangjiakou O750Oo，China；

2. Key Laboratory of Civil Enginering Diagnosis，Renovation and Disaster Resistance in Hebei Province， Zhangjiakou O75000， China；3. Hebei University of Architecture， Zhangjiakou O7500o，China；

4.School of Civil Engineering and Geographical Environment，Ningbo University，Ningbo 315OOo，China） Abstract：Inthispaper，thereactivepowderconcrete（RPC）isprepared withtheassemblyunitofsecondaryaluminumdross（SAD） and incinerationwasteflyash（WFA）.TheinfluencesoftheSAD’smassratiotothetotalmassofSADandWFAontherheological parameters（thesupflowandtheplasticviscosity），theflexuralstrengthandthecompresivestrengthareinvestigated.Thmesed heavymetals（Cr and Zn ）are measured.The RPC's microscopic morphology obtained by the scanning electron microscope（SEM）is usedtorevealthemechanismofRPC’sperformances.Theresearchingresultsdisplaythatwhenthemassratioofsecondaryaluminum dross is 60% ，theslumpflow，the flexural strength，thecompresive strengthand the drying shrinkage rate of RPC are the highest.However，theplasticviscosityoftheRPCisthelowestatthismoment.Theamountsof theleachedCrandZnarepositively

corelatedwititsimersingtieandinveselyoelaedwiheamoutoftheseconaryalmumdossWhenteamountofamount of the secondary aluminum dross is 60% ，the microstructure of RPC is the most compact.

Keywords：secondary aluminumdros；wasteflyash；rheological parameters；mechanical strength；leached heavymetal

0引言

焚烧垃圾飞灰是将生活垃圾高温焚烧后的固体废弃物，其中含有重金属锌、铬、铅和具有毒性的二恶英，这类材料属于危险固体废物[1]。（剩余7889字）