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1、《建筑材料》课程学习指导书7Z/Buildingmaterials"coursestudyguidebook,commercialrealestateresourcelibrary,yourlocation:HomePage>commercialrealestateresource>textLearningguideforbuildingmaterials[source:Zhejiangcommercialrealestatenetwork]author:unknown2008-7-11Theseventhchapter
2、wa11androofingmaterialThischapterfocusesonthemaintechnicalpropertiesofordinaryclaybricks・Sinteredbrickandtile1、firedordinarybrick:(1)standardsize:240mm*115mm*53mm;(2)accordingtothedifferentmaterials,canbedividedinto:sinteredclaybrick(N),(Y),burnedshalesinteredbri
3、ckCoalganguebrick(M)andsinteredflyashbrick(F).(3)thetechnicalrequirementsoffiredordinarybrickincludedimensiondeviation,appearancequality,strengthgradeandwindresistaneeChemical,frostandlimecrackingetc・・Qualifiedweatheringpropertiesofbrick,accordingtothesizedeviati
4、on,appearancequality,efflorescenceandlimeburstdividedintohigh-classproduct(A),Al(B),(C)threequalifiedproductqualitygrade・Strengthgrade:accordingtothecompressivestrength,thesinteredcommonbrickscanbedividedintoMU30,MU25,MU20andMU15,MU10fivelevels.2、sinteredporousbr
5、ick,hollowbrickandhollowblock(1)sinteredporousbrick:largebrickwithholes・Theholesizeissmaller,butthequantityismany,itsholerateandsoonAtorgreaterthan15%,theholeisperpendiculartothecompressionsurfacewhenusedandismainlyusedforload-bearingpartsofbuildings・Therearetwok
6、indsofmodels:M(190mm*190mm*90mm)andP(240min*115mm*)(90mm)accordingtocompressivestrengthandflexuralload,theyaredividedintosixstrengthgradesof30,25,20,15,10and7.5.(2)sinteredhollowbricksandhollowblocks:bricksorblockswithholesonthetopsurface,largeinsizeandsmallinsiz
7、e,Theholerateisgenerallymorethan30%,mainlyusedfornonloadbearingpartsofbuildings.Thesizesare290mmx190mm*90mmand240mm*180mm*115mmtwokinds;accordingtothebodyVolumedensitygrade800,900,1100andthreedensitylevels;eachlevelaccordingtothedensityofholesanditsrownumber,size
8、deviation,appearancequality,strengthandphysicalpropertiesforexcellence(A),Al(B)andqualified(C)threegrades・3.Sinteredtiles:Itisakindofproductmadeofclayasrawmate
