《鋼結(jié)構(gòu)安裝》課件-6.7 鋼結(jié)構(gòu)防腐防火技術(shù)

鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology技術(shù)簡介Technicalbrief鋼材的腐蝕是不可避免的自然現(xiàn)象Corrosionofsteelisaninevitablenaturalphenomenon鋼材是一個典型的耐熱不耐火的材料Steelisatypicalheat-resistantandnon-refractorymaterial防腐涂料Anti-corrosioncoatings防火涂料Fire-retardantcoatings鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology在鋼結(jié)構(gòu)構(gòu)件組裝、預(yù)拼裝或鋼結(jié)構(gòu)安裝工程檢驗批的施工質(zhì)量驗收合格后進(jìn)行。Itiscarriedoutaftertheconstructionqualityacceptanceofthesteelstructurecomponentassembly,pre-assemblyorsteelstructureinstallationengineeringinspectionbatch.在鋼結(jié)構(gòu)安裝工程檢驗批和鋼結(jié)構(gòu)防腐涂料涂裝檢驗批的施工質(zhì)量驗收合格后進(jìn)行。Itiscarriedoutaftertheconstructionqualityacceptanceofthesteelstructureinstallationengineeringinspectionbatchandthesteelstructureanti-corrosioncoatinginspectionbatch.鋼結(jié)構(gòu)的涂裝Coatingofsteelstructures鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology噴射除銹Sprayrustremoval拋射除銹Ejectionrustremoval手工除銹Manualrustremoval動力工具除銹Powertoolstoremoverust鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology（1）噴射（或拋射）除銹(1)Spray(orprojectile)rustremovalSa2Sa1Sa3Sa2.5噴砂除銹Sandblastingandrustremoval備注remarkSa1輕度的噴射除銹LightsprayrustremovalSa2徹底的噴射除銹ThoroughsprayrustremovalSa2.5非常徹底的除銹VerythoroughrustremovalSa3使鋼材表面潔凈的噴射除銹，顯示均勻的金屬光澤Cleansprayrustremovalonthesurfaceofsteel,showinguniformmetallicluster噴射除銹Sprayrustremoval拋射除銹Ejectionrustremoval鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology是指利用壓縮空氣將磨料從噴嘴高速噴出，來清除氧化皮和銹蝕；Itreferstotheuseofcompressedairtosprayabrasivesfromthenozzleathighspeedtoremoveoxidescaleandrust;是指只用拋丸機(jī)，將磨料拋出，沖擊和摩擦鋼材表面，除去鋼材表面的銹蝕和氧化皮等。Itreferstoonlyusingashotblastingmachinetothrowtheabrasiveout,impactandrubthesteelsurface,removerustandoxidescaleonthesteelsurface,etc.（1）噴射（或拋射）除銹(1)Spray(orprojectile)rustremoval手工和動力工具除銹Handandpowertoolstoremoverust鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology是指利用手工工具比如鋼絲刷等擦拭鋼材表面，達(dá)到去除氧化皮和銹蝕的目的。Itreferstotheuseofhandtoolssuchaswirebrushestowipethesurfaceofsteeltoachievethepurposeofremovingoxidescaleandrust.（2）手工和動力工具除銹(2)Rustremovalofhandandpowertools手工除銹Manualrustremoval備注remarkSt2在不放大的情況下觀察時，表面應(yīng)該看不見殘油、油脂和灰塵，沒有不牢固的氧化皮、鐵銹、油漆和異物，任何殘留的污物應(yīng)是牢固附著的Whenviewedwithoutmagnification,residualoil,greaseanddustshouldbeinvisibletothesurface,thereshouldbenounstablescale,rust,paintandforeignmatter,andanyresidualdirtshouldbefirmlyadheredtoSt3與

St2

類似，但是表面要處理的更徹底，鋼材要閃耀金屬光澤SimilartoST2,butwithamorethoroughfinish,thesteelshineswithametallicsheen鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology刷涂Brushapplication滾涂Rollcoating空氣噴涂Airspraying高壓無氣噴涂High-pressureairlessspraying涂裝施工Paintingconstruction鋼構(gòu)件油漆噴涂Paintsprayingofsteelcomponents鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology水性無機(jī)富鋅漆Waterborneinorganiczinc-richpaint優(yōu)良的防腐性能Excellentanti-corrosionproperties耐光耐熱好Goodlightandheatresistance使用壽命長Longservicelife常用于對環(huán)境和條件要求苛刻的鋼結(jié)構(gòu)領(lǐng)域Itisoftenusedinthefieldofsteelstructureswithharshenvironmentalandconditionalrequirements薄涂型Thin-coatedtype厚涂型Thickcoatingtype鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology通過遇火災(zāi)后涂料受熱材料膨脹延緩鋼材升溫。Byheatingthecoatingafterafire,theexpansionofthematerialdelaystheheatingofthesteel.通過防火材料吸熱延緩鋼材升溫。Heatabsorptionthroughfireproofmaterialsdelaystheheatingofsteel.防火涂料Fire-retardantcoatings鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology薄涂型防火涂料Thin-coatedfire-retardantcoating宜采用重力式噴槍噴涂，其壓力約為0.4MPa，局部修補(bǔ)和小面積施工，可用手工涂抹，面涂層裝飾涂料可刷涂、噴涂或滾涂。Itisadvisabletousegravityspraygunspraying,itspressureisabout0.4MPa,localrepairandsmallareaconstruction,canbeappliedmanually,andthetopcoatingdecorativecoatingcanbebrushed,sprayedorrolled.雙組分裝薄涂型涂料，現(xiàn)場應(yīng)按說明書規(guī)定調(diào)配；單組分薄涂型涂料應(yīng)充分?jǐn)嚢?，噴涂后，不?yīng)發(fā)生流淌和下墜。Two-componentthin-coatedcoatings,thesiteshouldbedeployedinaccordancewiththeinstructionsprovided;One-componentthin-coatedcoatingsshouldbefullystirred,andafterspraying,noflowandfallingshouldoccur.鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology厚涂型防火涂料Thickcoatedfire-retardantcoating宜采用壓送式噴涂機(jī)噴涂，空氣壓力為0.4~0.6MPa，噴槍口直徑宜為6~10mm。Itisadvisabletousepressuresprayingmachinespraying,theairpressureis0.4~0.6MPa,andthediameterofthenozzleshouldbe6~10mm.配料時應(yīng)嚴(yán)格按配合比加料和稀釋劑，并使稠度適宜，當(dāng)班使用的涂料應(yīng)當(dāng)班配制。Whenbatching,thematerialanddiluentshouldbeaddedstrictlyaccordingtothemixingratio,andtheconsistencyshouldbesuitable,andthepaintusedondutyshouldbepreparedonshift.厚涂型防火涂料施工時應(yīng)分遍噴涂，每遍噴涂厚度宜為5~10mm。Thick-coatedfireproofcoatingsshouldbesprayedinseparatebatches,andthethicknessofeachsprayingshouldbe5~10mm.鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology厚涂型防火涂料Thickcoatedfire-retardantcoating鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology（1）防腐涂料涂裝技術(shù)指標(biāo)(1)Technicalindicatorsofanti-corrosioncoatingcoating《民用建筑工程室內(nèi)環(huán)境污染控制規(guī)范》GB50325“CodeforIndoorEnvironmentalPollutionControlofCivilConstructionEngineering”GB50325《涂覆涂料前鋼材表面處理表面清潔度的目視評定第1部分：未涂覆過的鋼材表面和全面清除原有涂層后的鋼材表面的銹蝕等級和處理等級》(GB/T8923.1)"Visualevaluationofthecleanlinessofsteelsurfacetreatmentsurfacesbeforecoating-Part1:Rustgradeandtreatmentgradeofuncoatedsteelsurfaceandsteelsurfaceafterfullremovaloforiginalcoating"(GB/T8923.1)鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology（1）防腐涂料涂裝技術(shù)指標(biāo)(1)Technicalindicatorsofanti-corrosioncoatingcoating溫度temperature濕度humidity基材溫度Basematerialtemperature涂裝施工Paintingconstruction環(huán)境environment環(huán)境溫度5~38℃Ambienttemperature5~38°C空氣濕度小于85%Airhumiditylessthan85%基材表面溫度高于露點3℃以上Thesurfacetemperatureofthesubstrateisabove3°Cabovethedewpoint使用說明確定Useinstructionstodetermine無明確要求Thereisnoexplicitrequirement鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology涂裝遍數(shù)、涂層厚度Numberofcoatingpasses,coatingthickness無要求時，涂層干漆膜總厚度：Whennotrequired,thetotalthicknessofthecoatingdrypaintfilm:室外應(yīng)為150μmOutdoorshouldbe150μm室內(nèi)應(yīng)為125μmThechambershouldbe125μm偏差為-25μmThedeviationis-25μm每遍涂層干膜厚度的允許偏差為-5μmTheallowabledeviationofdryfilmthicknesspercoatingis-5μm鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology鋼結(jié)構(gòu)處在有腐蝕介質(zhì)或露天環(huán)境且設(shè)計有要求時Thesteelstructureisinthepresenceofcorrosivemediaoropenairenvironmentsandthedesignisrequired《漆膜附著力測定法》(GB1720)“MethodforDeterminationofFilmAdhesion”(GB1720)《色漆和清漆漆膜的劃格試驗》(GB/T9286)"Scratchingtestofpigmentedpaintandvarnishpaintfilm"(GB/T9286)鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology（2）防火涂料涂裝技術(shù)指標(biāo)Technicalindicatorsoffireproofcoatingcoating《鋼結(jié)構(gòu)防火涂料通用技術(shù)條件》(GBl4907)“GeneralTechnicalConditionsforSteelStructureFireproofCoatings“(GBl4907)《鋼結(jié)構(gòu)防火涂料應(yīng)用技術(shù)規(guī)程》(CECS24)“TechnicalRegulationsfortheApplicationofFireproofCoatingsforSteelStructures”(CECS24)《民用建筑工程室內(nèi)環(huán)境污染控制規(guī)范》(GB50325)“CodefortheControlofIndoorEnvironmentalPollutioninCivilConstructionEngineering”(GB50325)生產(chǎn)廠家Manufacturer產(chǎn)品products鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology必須有防火監(jiān)督部門核發(fā)的生產(chǎn)許可證，防火涂料應(yīng)通過國家檢測機(jī)構(gòu)檢測合格。Theremustbeaproductionlicenseissuedbythefirepreventionsupervisiondepartment,andthefireproofcoatingshouldpassthetestofthenationaltestingagency.必須具有國家檢測機(jī)構(gòu)的耐火極限檢測報告和理化性能檢測報告，并應(yīng)附有涂料品種、名稱、技術(shù)性能、制造批量、貯存期限和使用說明書。Itmusthaveafireresistancelimittestreportandaphysicalandchemicalperformancetestreportfromthenationaltestingagency,andshouldbeaccompaniedbythecoatingvariety,name,technicalperformance,manufacturingbatch,storageperiodandinstructionmanual.（2）防火涂料涂裝技術(shù)指標(biāo)Technicalindicatorsoffireproofcoatingcoating鋼結(jié)構(gòu)防腐防火技術(shù)Steelstructureanti-corrosionandfireprooftechnology（2）防火涂料涂裝技術(shù)指標(biāo)Technicalindicatorsoffireproofcoatingcoating施工前：復(fù)驗防火涂料的黏結(jié)強(qiáng)度和抗壓強(qiáng)度。Beforeconstruction:re-checkthebondingstrengthandcompressivestrengthoffireproofcoatings.防火涂料施工過程中和涂層干燥固化前：環(huán)境溫度宜保持在5~38℃，相對濕度不宜大于90%，空氣應(yīng)流通，當(dāng)風(fēng)速大于5m/s，或雨天和構(gòu)件表面有結(jié)露時，不宜操作。Duringtheconstructionoffireproofcoatin