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1、土木工程材料复习题whut版（ReviewofcivilengineeringmaterialswhutEdition）Waterresistanceindexofmaterials?Requirementsformaterialwaterproofstructureoftencomeintocontactwithwaterintheindex?Answer:thesofteningcoefficientismorethan0.85.forthegeneralstructureshouldbegreaterthan0.75.
2、RequirementsofwallmaterialthermalperformanceindexAnswer:smallthermalconductivity,goodthermalinsulation.Highspecificheatcapacity,hightemperaturestability.Characteristicsofquicklimeripening"Chenvolt"?Purpose?Answer:(1)theheatreleaseislargeandrapid.Volumeexpansionisla
3、rge,upto1~2.5timesChenFu:Limedigesterat2~3weeks,andcoveredwithwater.Objective:inordertoeliminatetheharmofburnedlime,makefullhydration.ThenatureofarchitecturalgypsumAnswer:fastsettingandhardening,hydrationhardeninghighporositylowstrength,heatinsulation,soundinsulati
4、onandsoundabsorptionperformanceisgood,butpoorwaterresistance;goodfireproofperformance;hardeningvolumeslightlyexpanded,gooddecoration;theadjustmentoftemperatureandwet;constructionisverygood.MineralcompositionofcementclinkerEngineeringpropertiesofvariousmineralsAnswe
5、r:three,twocalciumsilicatecalciumsilicate,aluminate,calciumthreeferritealuminatefourcalcium.Themineralpropertiesofcementclinker:threecalciumaluminate,hydrationandhardeningspeedisthefastest,28dhydrationheatreleaseisthemost,andthestrengthisthelowest;calciumsilicatetw
6、ocalciumhydrationandhardeningrateistheslowest,28dheatreleaseistheleast,thestrengthislowearly,latehigh.Improvethecontentofthreecalciumsilicate,canbemadeofhighstrengthcement;improvethecontentofthreecalciumaluminateandsilicatecalciumthree,canproducefasthardcement;redu
7、cethecontentofcalciumsilicateandaluminatethreethreecalciumsilicatecalcium,increasethecontentoftwo,canbepreparedinlowheatcement;improvethecontentofironandaluminumacidfourcalcium,reducethecontentofthreecalciumaluminatecementroad,canbeprepared.Whatisthepurposeofproduc
8、ingcementandgypsum?StructurecompositionofcementstoneAnswer:adjustthehardeningrateofcement,thecementsettingdelay.SoundnessofcementvolumeThecauseof
