混摻垃圾飛灰和二次鋁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

焚燒垃圾飛灰是將生活垃圾高溫焚燒后的固體廢棄物，其中含有重金屬鋅、鉻、鉛和具有毒性的二惡英，這類材料屬于危險固體廢物[1]。（剩余7889字）