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《發(fā)泡石膏輕質(zhì)墻體材料的制備與性能分析》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、發(fā)泡石膏輕質(zhì)墻體材料的制備與性能研究oftheclosedbubblesandmakethebubbles’sizemoreevenlycomparedwiththeblanksample；Theoptimumdosageoftheaddingfoamwas1009powdersmixedwith150mlfoamsforpreparingfoamingplaster，underthisoptimumconditions，foamingplasters’densityandcoefficientofheatconductivityachievedabettervalue，a
2、ndcomparedtotheblankplastersample，theapparentdensityofthesampledecreasedfrom1205kg／mJto517kg／m3，thecoefficientofthermalconductivityreducedfrom0．217W／(m·K)toO．121W／(m·K)．Themechanicalpropertiesandwaterresistanceofthesamplewererelativelygood，stillCansatisfytherequirementsforpreparingfoamingp
3、lastermaterials．3．ThefoamingplastermaterialWasmodifiedinordertosolvetheproblemofitsownlowhardnessandpoorwaterresistancebyaddingmodifiedcomponentssuchasflyash，cementandcompositewaterproofingagent，theinfluenceandmechanismofthemodifyingresearchwerediscussed．Ithasbeenfoundthataddingfly·ashCani
4、mprovetheworkabilityofplasterslurry，thestrengthandthewaterresistanceperformanceCanbemodifiedbyaddingcementandcomposffewaterproofingagent．Theoptimummodificationschemewasmixed15wt％cement，20wt％flyash，and6wt％compositewaterproofingagentwithintheinorganicpowder．Thefoamingplastersample’waterdeman
5、dfornormalconsistencyWas44％，theflexuralstrengthWas1．98MPa,thecompressivestrengthWas3．90MPa,thewaterabsorptionrateWas18．6％，andthesofteningcoefficientWas0．67afterthemodification．Compared塒tlltheunmodifiedsample，thefoamingplastersample’waterdemandfornormalconsiStencyWasreducedby5％，thebendingst
6、rengthWasincreasedby44．5％，thecompressivestrengthWasincreasedby38．3％，thewaterabsorptionrateWasreducedby58．6％，andsofteningcoefficientWasincreasedby45．7％．4。Thepolypropylenefiberswereaddedintotheinorganicpowdertoenhancethebendinganti-crackingperformanceoffoamingplastermaterials，andthefiberrein
7、forcedfoamingplasterlightweightinsulationinsidewallplankWasprepared．Theresultshowedthattheaddingfiberhadimprovedthebendinganti-crackingperformanceofthefoamingplastermaterials．Whentheaddingfibers’lengthwere10—16mmandthemixingdosagewere1．0wt％謝mtheafter-mixedmeth
