1,asarepresentativeofPartyA,howdoyoucontrolthequalityandcostoftheproject?Whataretheproblemsthatshouldbepaidattentiontointheconstructionoftheconstructionsitecivilization?Answer:one,themaincontroltimeanddesignchanges,withthethreeparty(design,construction,supervision)morecommunication,moretolistentotheviewsofthedesignside.2,thegeneralcivilconstructionprojectswhicharedividedintoseveralsubprojects?Eachdivisionprojecttriestoenumerate2~3subprojectworks?Whatarethecommonqualityproblemsofeachdivisionproject?Answer:foundationandfoundationengineering,themainstructure,decoration,roofengineering,watersupplyanddrainageandheating,electrical,intelligent(weak),ventilation,airconditioning,elevators,energysavingprojects.1typesofcommonqualityproblemsinresidentialengineeringmasonryengineeringclass:masonrymaterials,mortarstrengthisnotuptothedesignrequirements,masonrysizedoesnotmeettherequirementsofthedesigndrawings,thelevelofthelackofmortarfullness.2reinforcedconcreteworks:thequalityofsteelandconcretestrengthdoesnotmeetthedesignrequirements.3roof,toiletbath,theexternalwallleakage.4.Forgroundandfloorengineering:unevenground,pourflashing,cementfloorsand,emptycrack;groundairbifida,seamnotneat,irregularpattern.5internalandexternalwalloftenbrushpulp:powderoutthere,peeling,sagging,bitingthroughtheendofthephenomenonsuchascolor.6tilesmountedfirmly,rowsofbricksisnotreasonable,thegapisnotstraight.7installationofwatersupplyanddrainagepipeline:thereisleakage,blockage,water,sanitationequipmentinstallationisnotstrong,etc..3,youunderstandthetypeofbuildingfoundation?Whatisthescopeofitsapplication?Foundationtype:accordingtothemechanicalcharacteristicsandmaterialpropertiescanbedividedintorigidfoundationandflexiblefoundation;bywayofstructurecanbedividedintostripfoundation,independentfoundation,raftfoundation,boxfoundation,etc..1accordingtothematerialandthestresscharacteristicclassification?(1)therigidfoundation:thefoundationwhichisrestrictedbytherigidangleiscalledtherigidfoundation.Thecompressivestrengthofthematerialusedintherigidbaseishigh,butthetensilestrengthandshearstrengtharelow.Rigidfoundation,thepressuredistributionangleaiscalledtherigidangle.Inthedesign,weshouldmakeeveryefforttomakethefoundationandthebasematerialoftherigidangleconsistent,objective:toensurethatthefoundationdoesnotproducetensilestress,tomaximizethesavingofbasicmaterials.Byrestrictingtherigiditybasewidthheightratiotomeettherequirementsoftherigidangle.Common:Brickfoundation.Limesoilfoundation.Concretefoundation.Rubblefoundation.Concretefoundation.Rubbleconcretefoundation.1)bigfeettoensurethatthefoundationofthefoundationisnotundertheactionofthebasereactionforceisnotdamaged.2)limesoilfoundationoflimesoilfoundationforregionsintheundergroundwaterlevelislow,andotherbasicmaterialsshareandserveasthebasisofcushion.3)concretefoundationconcretefoundationisgenerallyusedfortheundergroundwaterlevellowfourlayerandfourlayerbelowthecivilbuildingengineering.4)rubblefoundationhasthecharacteristicsofhighstrength,frostresistance,waterresistance,economyetc..5)theconcretefoundationusedforthehighgroundwaterlevel,thebuildingsaffectedbyfreezing.6)addingacertainvolumeofrubbleintheconcrete,calledrubbleconcretefoundation.2)flexiblefoundation.Atthebottomoftheconcretefoundationconfigurationbythestrengthofsteel,theuseofsteelbar,sothatthefoundationcanwithstandbendingmoment,itisnotsubjecttothelimitoftherigidangle.Sothereinforcedconcretefoundationisalsocalledtheflexiblefoundation.Reinforcedconcretefoundationsectioncanbemadeintotrapezoidal,thethinnestpartoftheheightofnotlessthan200mm;alsocanbemadeintoastepshape,eachsteppinghigh300-500mm.Normally,thereinforcedconcretefoundationisprovidedwithC7.5orC10concretecushion,thethicknessofaboutlOOmm;nocushion,thereinforcementoftheprotectionlayeris75mm,inordertoprotectthereinforcedsteelfromcorrosion.2accordingtothestructureclassification(1)theindependentfoundation(thefoundation).Separatefoundationundercolumn1).Thefoundationisthemaintypeofthecolumnfoundation.2)underthewallseparatefoundation.Thefoundationisthefoundationofthesoftsoil,butnotinthedepthsofthebettersoil,inordertosavethefoundationmaterialsandreducetheamountofearthworkandtheuseofabasicform.(2)stripfoundation.1)thestripfoundationunderthewall.Stripfoundationisthemainformofbearingwallfoundation.Whentheloadsofupperstructureislargerandpoorsoil,usesthereinforcedconcretebuilding,wallofreinforcedconcretestripfoundationisgenerallymadeofribbed;ribbedstripfoundationconditions:thefoundationinthehorizontaldirectioncompressionofuneven,inordertoincreasetheintegrityofthefoundation,reduceunevensettlement.2)reinforcedconcretestripfoundationundercolumn.Whenthefoundationisweakandtheloadislarger,itcanstrengthentheintegrityofthefoundationandsavecost,soitcanbemadeintoreinforcedconcretestripfoundation.(3)crossfoundationundercolumn.Loadlargerhigh-risebuildings,suchasthesoilisweak,canbemadeintoacrossfoundation.(4)theraftfoundation.Suchasfoundationweakandloadandalarge,basedontheuseofcrossstillcannotmeettherequirementsoradjacenttrenchdistanceisverysmall,canbemadeofreinforcedconcretemadepieceofraftfoundation.Accordingtothestructure,itcanbedividedintotwotypesofflatplateandbeamplate.(5)boxfoundation.Itsmaincharacteristicistherigidityisbig,reducethebaseofthebottomsurfaceoftheadditionalstress,theyaresuitableforsoftsoillayeristhick,heavyloadandtheconstructionareaisnottoolargeanumberofimportantbuildings,atpresenthigh-risebuildingsintheboxfoundation.Four,masonrystructure,framestructure,shearwallstructure,framestructure,tubestructure,steelstructure,archstructure.4,theconstructionofseveralmajorcategoriesofstructure?A:buildingstructureduetothedifferentbuildingmaterials,canbedividedintoconcretestructure,masonrystructure,steelstructure,lightsteelstructure,woodstructureandcombinationstructure,etc..5.Whatisthemaincontentofthesitesafetyandcivilizationconstruction?Buildingengineeringsafetyprotection,civilizedconstructionmainlyincludes1,civilizedconstructionandenvironmentalprotection:(1)safetywarningsigns:inpronetoaccidentsordangerousatsetclear,inlinewiththerequirementsofthenationalstandardsafetywarningsigns;(2)siteWeidang:sitebyenclosingwalls,heightnotlessthan1.8m,theenclosurematerialcanusethecolor,settingsteelplate,brick,concreteblockwall.(3)inthedooroftheprojectoverview,managementpersonnellistandsupervisiontelephone,safetyproduction,civilizedconstruction,fireprotectionfiveboard;constructionsitegeneralplan.(4)corporatelogo:thegateofthesiteshouldbeequippedwithacorporatelogoorcorporateidentity(5)fieldcapacityappearance:smoothroads,drainage,drainagefacilities,thesiteofthegroundhardeningtreatment,green.(6)materialstack:materials,components,materials,suchaspilingup,hanginganame,varieties,specificationsandothersigns,cementandothereasilyflyingfinebuildingmaterialsshouldbeclosedstorageortakeothermeasurestocoverthe,flammable,explosiveandtoxicandharmfulgoodsclassificationstored.(7)onsitefireprevention:thefirefightingequipmentisreasonableandmeetstherequirementsoffireprotection.(8)garbagecollection:theconstructionsiteshouldbesetclosedgarbagestation,constructionwaste,garbageshouldbeclassifiedandstored.2,temporaryfacilities(1)fieldofficeandlivingfacilities:constructionsiteoffice,livingareaandworkareasetapart,keepasafedistance,thesiteoffice,on-sitedormitories,canteens,toilets,drinkingwater,restplacescomplywithhealthandsafetyrequirements.(2)theconstructionsitetemporarypower:TN-Ssystemrequirementsinaccordancewithfivecorecable,cableandthreecorecable;accordingtotherequirementsoftheerectionoftemporarypowerlinepoles,crossarm,porcelainclamp,insulatorandother,orburiedcabletrench;neartheconstructionsiteoftheexternalcircuit,setofwoodenandplasticinsulatorprotectionfacilities;accordingtothethreeleveldistributionrequirements,equippedwithgeneraldistributionbox,distributionelectricalboxandswitchboxthreekindsofstandardelectricbox.Theswitchboxshallbeinaccordancewithonemachine,onebox,onebrakeandoneleakage.Threekindsofelectricboxofallkindsofelectricalappliancesshouldbequalifiedproducts;accordingtotherequirementsoftheprotectionandselectedtomeetthecapacityrequirementsandqualitystandardsofdistributionboxandswitchboxleakageprotector;constructionsiteprotectionchangerepeatgroundingshouldbenotlessthanthree.3,constructionsafety(1)floor,roof,balconyneartheborderprotection:thedensemeshtypesafetyverticalnetfullyenclosed,homeworklayerplusonbothsidesoftheprotectiverailingand18cmhightheskirtingboard.(2)channelmouthprotection:protectionshed,thesheltershouldbenotlessthan5cmthickwood?Watchtheolddrop0cmbambooeaten?.Thetwosidesshouldbeclosedwithadensemeshsafetynetalongtherailings.(3)theprotectionoftheentranceofthecave:theboardisfullyclosed;theshortsideoftheentranceofthe1.5mlonghole,inadditiontotheclosureofthesurroundingshouldalsohaveaprotectiverailing.(4)wellheadliftdoor:settype,toolsandstandarddoor;intheelevatorshafteverytwolayers(lessthan10m)aAnquanPingnetworksettings.(5)theedgeprotection:modeling,toolandstandardizationoftheprotectiverailingsof1.2mhigh,18cmhighskirtingboard.(6)crossjobprotectionintheverticaldirection:settingtheshelterorotherfacilities.(7)aerialworkprotection:suspensionofasafetybeltorotherfacilities;anoperatingplatform;aladderorotherformofaccesstothechannel.6.Howtocoordinatetherelationshipbetweentheownerandthecontractor,thecontractorandthesubcontractor?Ifyouareahomeowner,youmainlyonsupervisionunitsandthegeneralcontractingunitwerecoordinatedmanagement,subcontractunitifthereisaproblem,itshouldbeandthegeneralcontractingunittocommunicate,strengthenmanagementofsubcontractors,appropriatenoticebysupervisionunitsdirectlytothecontractingunitsissuedrequirementsofthegeneralcontractingunit7,engineeringconstruction,suchasrawmaterialqualityproblems,constructionqualityaccidentorstructuraldesigniswrongandhasbeentheconstruction,howwillyoudealwith?Answer:downtime,claimstodonowisshutdown,andtocleanupalltheproblemsofengineering,toremedythesituation,it'snottoolate,ifallbuiltup,itwilllosemore,thennotonlyisqualityproblems,mayalsoinvolveotherproblems,willalsoaffectyourbusiness.Atthattimetobuyrawmaterialsareauthentic,thenyoucanfindqualitymonitoringdepartmentofrawmaterialstodotheinspection,thequalityofrawmaterialshaveproblemsshouldfindsuppliers,sothathelostallofyourlosses.Ifthereisanerrorinthestructuraldesign,thenlookforthedesigndepartment.8,intheconstructionofartificialdiggingpilefoundation,theconstructionsequenceandattentiontowhat?Howtochecktheconstructionpilereaming,reamingaftermeetsthedesignrequirements?9,inthemainconstruction,thekeypartiswhat?Focusonwhat?Allthehiddenworks,axis,etc.10,whatistheinspectionbatch?Forexample?Inspectiongroupofthedivisioninthepreconstructionshouldaccordingtotheconstructionschedulereflectedintheconstructionorganizationdesign;??undernormalcircumstancesifsingleareaoflittlecanbeaconstructioncanbedividedintoabatchacceptance,ifsingleareaoflarger(orsubjecttosite,structureformofcontrol),toconstructionarrangementsmayneedretentionfacilitiessewing(oraccordingtothedeformationjointdivisionofconstruction)isdividedintoapluralityofacceptancegroup.????Acceptancebatchdivisionismainlybytheconstructionarrangement(inmyopinion),someinthepreconstructionarrangementgoodconstructionsegmentshavemayinactualconstructionduetotheinfluenceofuncertaintyfactorschange,acceptancegrouphavereclassifiedinaccordancewiththeactualsituation.;????thefinalacceptancegroupdividedaccordingtotheactualconstructionsituationtodetermine..Theinspectionlotcanbedividedaccordingtotheconstructionandqualitycontrolandprofessionalacceptanceaccordingtothefloor,theconstructionsection,deformationandsoon.????Themainsubsegmentofthe1multi-storeyandhigh-risebuildingintheconstructionperioddividedbyfloororbatchinspection;????2singleitemprojectinconstructionaccordingtothedeformationjointinspectiongroupdivision;????3foundationengineeringprojectisgenerallydividedintoaabatchofinspection;basicengineeringundergroundlayeraccordingtodifferentundergroundlayerdividedbatchinspection;????4roofingengineeringprojectondifferentfloorsoftheroofcanbedividedintotestgroup;????5intheotherbranchofengineeringproject,accordingtothegeneralfloordividedbatchinspection;????6forengineeringquantitylesscanbeunifiedasatestgroup;????7installationaccordingtothegeneraldesignsystemofagrouporagroupoftestequipment;????8outdoorprojectunifiedintoabatchinspection;????9steps,apron,ditchetc.wateronthegroundInspectionlot.11,howtoensuretheundergroundshearwall(retainingwall)ofthewaterproofquality?Ensureundergroundshearwallwaterproofquality,itisnecessarytoproceedfromthefollowingaspects:1,accordingtothehydrogeologicalconditionsandoutdoorenvironmenttypetaketheappropriatelevelofwaterproofconcrete2,chooseasuitablewaterproofmaterial,thegeneraldesignforwaterproofingofthe3,strictlyinaccordancewiththerulesofundergroundwaterinconcretestructureistheconstructionandconstructionofwaterproofcoiledmaterial,reasonablesettingsettlementeveryandconstructionjoint,reducestructuralcracking;forstructuralJiecha,settlementjoints,constructionjointstotakenecessarymeasuresofwaterproof(additionalwaterprooflayerorsetsealingplate,sealingstrip,etc.)4,strengtheningofcovertacceptance,guaranteeingthequality.5,referenceconcretestructureconstructionqualityacceptancespecificationGB50204_andGB5020812,thegeneralcivilconstructionprojectsinthedrawingprocess,andwhatisthekey?Trytoillustratethe.Answer:12.Buildingstructure,thatthereisnoconflictingorintentionsunclear2.Architectural,structurediagramaxispositionisconsistent,relativesizeisclearlymarked.Ifitisaframestructure,toseewhetherthebuilding,structureofbeamandcolumnisthesamesize,ifitisabrick,seethickwall,structuralcolumnlayoutisconsistent.Approvedelevationpiledeliveryaftertheelevationanddrawingswhetherentry.Buildingdecorationtablecontainsalltheroom6.Checkdoorsandwindowsisclear,andaccordingtotheplan,noplantopracticewhetherthereislarge,largesampleinopeningdirection,glassmaterial,keelmaterialisclear.7.Generaldesigniseasytoneglectthewindow,curtainboxofwindowapproach,doorsandwindowsmaterial,gatestacksize8.Seefigureindicatesthatthestructureisandspecificationcontradictsorhaveaccessto,like,negotiationaccordingtowhichstandardconstruction.Fromtheconstructionangleconsideration,whetherthereisdifficultyinconstructionornottoconstructionofthenodestructure,suchassloperoof.Iftheirmasteryofthemorecomprehensive,tochecktheindoorpipelineisfighting,especiallyoutdoorpipelineengineeringisfightingintersectingsurfaceflatroofandplace,beamcrossconstructionaremostlikelyto..stairfootfallheightandnumberwhetherandelevationattached11.Elevationofbuildingstructuralelevationisandstructurediagramofeachlayerelevationattached12.Thecorniceofalocalelevationerrorprone,properattentionto13floordoorsandwindowsoftheholesize,thenumberisconsistentandinsidedoorwindowsize,amount13,howtopreventthewallandplaster(internalandexternal)crackingandhollowing?Controlofplasteringengineeringqualitydefectsandeliminationmeasuresinconstructionwilloftenoccursomecommonqualitydefects,lightcreatestheunnecessarytroubletotheuser,severecasesarequalityproblems,affecttheoverallqualityoftheproject,tothecountryandthepeople'scauseunnecessarylosses.Howtocontrolandeliminatequalityproblems,isoneofthetopicsoftheconstructionindustrycounterparts.Plasteringengineeringisaweaklinkintheconstruction,themainperformanceis:constructionisstillinmanualoperation,wetwork,qualityisnotstable.Theindoorandoutdoorplastererwidespreadcracking,hollowing,shellandcovergraysurfacerough,foaming,yinyangangleisnotperpendiculartothefounder,outsidethewallsofpollutionandotherqualityproblems.Nowthesequalityproblemscausesandprotectivemeasuresaredescribedasfollows:after,wasbuiltofbrick,concretebasehollowing,crackwallplastering,overaperiodoftimeofteninthedoorandwindowframeandwalljunction,primarywoodandmasonry,concretebaseintersection,basiclevelbiasandlargeparts,aswellasdado,playingthesolesofthefeetupperetc.atKonggu,cracks.Reasonanalysisof(1)basecleaningnotcleanorimpropertreatment;wallwateringthrough,afterplasteringmortarthewatersoonbebase(orbottomash)absorption,affectingthebondstrength.(2)preparationofmortarandrawmaterialsqualityisnotgood,improperuse.(3)thedeviationofaplasteringlayeristoothick,dryshrinkage.(4)onbothsidesofthedoorandwindowframeCypriotgreylax,wallpreburiednogdistanceistoolargeornogloose,thevibrationswitch,onthedoorsandwindowsboxproducehollowingandcracks.2,preventivemeasures(1)beforeplasteringgrassroots?OverseaswhetstonefanDalphasuppressionTombofpersimmonKangDiantigerdeepdishinsurancewidowsChuomang?1)concrete,masonrybasesurfaceasperitiesdistinctparts,shouldadvancetickflatorwith1:3cementmortarreinforcing;surfacetoosmoothgrassrootstocuthair,orwitha1:1cementmortarblendedwith10%of107gluefirstwipedathinlayerof(withathicknessofabout3mm),after24hoursofplastering,grassrootssurfacemortarresidualdirt,isolationagent,paintshallbeprecleaned.2)wallfoothandholesshouldbetightlyblocked;plumbing,ventilationpipethroughtheholeinthewallandtickthewallcorrugatedtubemustbewith1:3cementmortarblockYanMoping.3differentbasematerials,suchaswoodandbrick,concretebase,shouldbepavedmetalmesh,lapwidthshouldbefromthephase,bothsidesofnotlessthan10mm.(2)thewallshouldbewateredbeforeplastering.Brickbaseiswateringtwotimes,thebricksurfaceseepagedepthofabout8~10mm,canmeettherequirementsofplastering.Aeratedconcretesurfaceporosity,butthecapillarymaterialisaclosedandsemiclosed,hinderingthewaterpenetrationrate,comparedwithbrickwall,bibulousratelosesabout3to4times;therefore,weshouldtwodaysinadvancetowatering,everydaymorethantwice,seepagedepthreach8to10mm.Theconcretewallplasteringbeforelowwaterabsorption,lesswateringcan.Ifeachlayerplasteringapartforalongtime,orcastmortarhavebeenkilled,wipeonalayerofmortarshouldbethebottomwateringhumid,preventmortarjustwipethewaterbottomsucked,producehollowing.Inaddition,thedegreeofwaterlevelofthegrassroots,butalsowiththeconstructionseason,climateandindoorandoutdooroperationenvironment,shouldbebasedontheactualsituation.(3)mortarusedmustbegoodandeasy,andhasacertainbondstrength.Andtheworkabilityofthemortarcanbeappliedtoauniformthinlayer,andthebottomlayerisfirmlybonded,easytooperateandcanensurethequalityoftheproject.Theworkabilityofmortardependsontheconsistency(sinkratio)andwaterretentionpropertyofmortar.Plasteringmortarconsistencyshouldbecontrolledasfollows:theunderlyingplasteringmortaris10~12cm;middleplasteringmortarfor7to8cm;surfacelayerplasteringmortarfor10cm.Thewaterretentionpropertiesofthemortarisreferstoinmixing,transportation,useintheprocess,theperformanceofthemortarinthewatertocementitiousmaterialsandaggregateseparationspeed,goodwaterretentionofmortareasysegregation,ifthesmearontheporoussurfaceofthebase,themortarinthewatersoonwillbesuckedatthegrassrootslevel,dehydration,becomerelativelythicktooperate.Themorecementmortar,thebetterthewaterretentionproperty.Cementmortarwaterretentionispoorcanbemixedwithlimepaste,flyash,airentrainingagentandplasticizer,inordertoimprovethewaterretention.Inordertoensurethefirmadhesionbetweenthemortarandthebase,plasteringmortarshouldhavecertainbondstrengthandplasteringcanbeinthemortarmixedwithlatex,107glueandothermaterials.(4)therawmaterialsusedforplasteringshallcomplywiththequalityrequirements.(5)themixingratioofthebottommortarandthemiddlelayermortarshouldbebasicallythesame.Middlegradeofmortarcannotbehigherthanthebottom,bottommortarcannotbehigherthanthewallbase,lestincondensationprocesstogeneratestrongcontractionstressanddamageoflowstrengthofthegrassroots(orplasterbase),Konggu,cracks,shellingandotherqualityproblems.Aeratedconcretesurfaceofthecompressivestrengthofabout30~50kg/csquaremetersandplasteringofaeratedconcretewallbottommortarlabelshouldnotbetoohigh,thegeneralshouldchoose1:3limemortaror1:1:6labelingthanattheendofthemixedmortarisappropriate.(6)theprimarywallformationandverticaldeviationofthelargerlocalthicknessofplasteringisthick,eachthicknessofplasteringshouldshouldbecontrolledinthe8to10mm.Mustbedividedseveraltimesovermiddleplastering.Cementmortarandmixedmortarshallbebeforealayerofplastersolidifiedlayer,andthensmearalayerof;limemortarshouldbetobealayerofwhite(7~8intodry),andthensmearalayer.Topreventinternalmortarhavewipedoutovertheloose,orseverallayersofwetmortarcombinedtogether,resultinginshrinkageistoolarge,producehollowingandcracks.(7)thedoorandwindowframeplugjointsshouldberesponsibleforthepersoninchargeofaprocess.Thecementmortarwithasmallvalveplugplugwillbestrictlyreal,reachedacertainstrengthwithcementmortar.Doorwindowframeinstallationshouldadopteffectivemeasurestoguaranteeandwallbodyisfirmlyconnected,afterplasteringnotcrack,emptydrumatthedoorandwindowframeedge.1)whena12cmthickbrickwalls,embeddedblockiseasytoloose,the12x12x24cmprecastconcreteblock(plusnog)method;24cmthickbrickwall,middleverticalmouth.Nogshouldandthesizeofthebricksarethesameaswide;bythesidewhensettingupthemouth,shouldremovethenogainclinedbranch.2)aftertheadoptionofaeratedconcreteblockwallanddoorisconnectedwhensettingupthemouth,thefirstwalldrillingdepth10cm,diameterof35mmhole,againwiththesamesizeofthelogstainedwith107gluecementslurry,intotheholeandsurfaceexposedabout10mmgenerationnog.Doorheight2meters,eachsidesetthree,installedfirstonthedoorframepredrilledeyes,nailsandwoodscrewsandaeratedconcreteblockinthepreburiedlogsfastened,doorstopperjointsbybondingmortarhookwipetight,bondingmortarwithratio(weightratio)forthecement:Spinning:107glue=1:1:0.2:0.3.Byfirstestablishingmethod,blockandtheoutsideofthedoorframearewipedbondingmortar5mm,extrusionplugisreal,andadjusttheverticalflatwalls,immediatelyonthedoorframeoneachsideofthenail4inchnails,eachofthethreeandaeratedblockwallnail,nailcanbefirstnailfortunatelydoorframeexposednailtipofthenailcap,takepartial,stayblocktoexceedtheheightofnailsandnailintotheblock.Two,lightpartitionwallplasteringcracks,hollowing,overaperiodoftime,wherethelongitudinalcrackalongtheseams,transversecracksbetweentheplateandtheroof,wallhollowingandirregularcrack.1,analysisofthecauses(1)coagulationboardinaerated,gypsumperlitehollowplate,platelightpartitionwallcarbonization.Theplasteringrationaloperationmethodisnotbasedonthesecharacteristics.(2)theplateplateinstalled,seamadhesivemortarmortarsqueezeisnotstrict,notfull.(3)anunevenheadplatestripandroofbondingfounder,lax.(4)thelowerbattenfloorcleaningnotclean,smoothfloornochiseling.(5)onlyinthebacksideofthewedgeplate,pisoliteconcreteslumppacking.(6)throughthelargewallintegrityandstiffnessispoor,thewallwasshockedbythevibration.2,preventivemeasures(1)ofaeratedconcrete墻抹灰必須注意如下幾點:1）墻體表面浮灰、松散顆粒應(yīng)在抹灰前認(rèn)真打掃干凈;提前兩天(每天2-3次)澆水,抹灰時在澆水濕潤一遍,2）抹石灰砂漿時,應(yīng)事先刷一道107膠水溶液,配合比為107膠:水=1:3～4;抹混合砂漿時應(yīng)先刷一道107膠素水泥砂漿;107膠摻量為水泥重量旳10～15%,緊接著抹底層砂漿.3）底層砂漿標(biāo)號不適宜過高,一般用1:3石灰砂漿打底,紙筋灰罩面做法較好;如墻體表面較平整,可直接在基層上薄抹二遍紙筋(麻刀)罩面灰,厚度約2～3毫米,第一遍紙筋(麻刀)灰內(nèi)摻10～15%膠,以增長與基層旳粘結(jié)力.需要做水泥砂漿旳墻面.底層砂漿以抹1:3:9或1:1:6混合砂漿為宜,面層用1:0.33or1:0.1:2.5mixedmortar,thetotalthicknessofnotmorethan10~12mm.(2)gypsumperlitelath,carbonizationplatewallandbasefromdustandparticlestoseriouslycleaning,wateringshouldbeappropriate,jointconcavepartshouldadvancesmooth;107afir