煤矸石粉制備混凝土用復(fù)合摻合料的性能研究

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DOI： 10.19860/j.cnki.issn1005-8249.2024.01.004

WANG Jianhua’，LAI Yiliang1，LIU Gang1，YANG Feng2，LIU Jianxin’，LI Guangsheng' （1.East China Survey and Design Institute（Fujian） Co.，Ltd.，F(xiàn)uzhou 361OO5，China； 2.School of Civil Engineering，F(xiàn)ujian University of Technology，F(xiàn)uzhou 35O108，China）

Abstract：Thecompositemineraladmixturesforconcretewerepreparedbypartiallyeplacingflyashwithcoalganguepowder.The effectsofcoal ganguepowder，flyashandphosphorusslagontheflexuralstrength，compresivestrength，activityindexadstregth growthratioofthetestedmortarwerestudiedthroughorthogonalexperiments.Theresultsshowedthattherewasastronginteraction betweenganguepowder，flyashandphosphorusresidueonthehydrationofcement，andwhenthedesignmixatioisapropriate，the7 day and 28- dayactivityindexandstrength growthratioof thetestedgumsandreachedtherequirementsoftheordinarygrade Il compositemineraladmitureofompositeadmixtureforonceteinicatingtatiwasompletelyfasibletopreparecompositeial admixture for concrete by replacing flyash with gangue powder，and the optimal scheme is to add 25. 0% coal gangue powder， 62.5% fly ash，and 12.5% phosphorus slag.

Keywords：gangue powder；fly ash；composite admixtures；concrete；phosphorus residue；property

0引言

混凝土摻合料是為改善混凝土性能，節(jié)約用水，調(diào)節(jié)混凝土強(qiáng)度等級(jí)，在混凝土拌和時(shí)摻入天然的或人工的能改善混凝土性能的粉狀礦物質(zhì)[1]。（剩余4650字）