水泥胶砂强度检验方法Testmethodforstrengthofcementmortar.docx

水泥胶砂强度检验方法Testmethodforstrengthofcementmortar.docx

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水泥胶砂强度检验方法Testmethodforstrengthofcementmortar

水泥胶砂强度检验方法（Testmethodforstrengthofcementmortar）

水泥胶砂强度检验方法（Testmethodforstrengthofcement

mortar）

People'sRepublicofChinanationalstandard

GB/T177-1985

Testmethodforstrengthofcementmortar

1985-10-01implementation

Release

Beijing

Beijing.....................................................................................................2...

1instrument:

...:

...

1.1gluesandmixer:

...

1.2rubbersandshaker:

...

1.3testdieandblankingfunnel:

...

1.4bendingtestmachines:

...

1.5compressiontestingmachineandcompressionclamp,...

1.6flatknife:

...:

...

2material:

...Andthefollowing:

...

3,temperature,humidity,...

4testspecimenmolding:

...

5conservation:

...:

...

6strengthtests:

...:

...

Additionalnotes:

......:

...?

ThemethodisapplicabletoPortlandcement,ordinaryportlandcement,slagcement,volcanicashcementandflyashwater

Testonflexuralstrengthandcompressivestrengthofmud.Anyothertypeofcementdesignatedforthismethodshallbetestedafterdeterminingthewatercementratio

Applicable.

1instrument

1.1gluemixer

Thesandmixingmachineisdoublerotatingbladetype,andthemixingbladeandthestirringpanrotateinoppositedirections.Bladesandpansmadeofwear-resistantgold

Thegapbetweenthebladeandthebottomofthepanandthewall

ofthepotis1.5+0.5mm.ManufacturingqualityinlinewithGB3350.l82

Regulationofcementphysicaltestinstrumentandgluesandmixer.

1.2rubbershaker

Thevibratingtableofsandsand（Fig.1）generatesvibrationbyanelectricmotorprovidedwithtwosymmetricaldeflectionwheels.Fixedtoconcretewhenused

Onthebase,andcomplywiththeprovisionsofGB3350.2-82"cementphysicalexaminationinstrument,sandvibratingtable".

1.3testdieandblankingfunnel

1.3.1testdieisadetachabletripledie,whichconsistsofclapboard,endplate,baseandsoon.ThequalityofmanufactureshallcomplywiththeprovisionsofGB3350.5-82"cementphysicalexaminationinstrument,gluesandtestmold".Inthemodelused,thegrooveheightshallnotbelessthan39.8mm,

Moldgroovewidthshallnotbegreaterthan40.2mm.

The1.3.2blankingfunnel（Fig.2）consistsofafunnelandadiesleeve.Thefunnelismadeof0.5mmwhiteironsheet,andthewidthofthematerialoutletisnormal

For4-5mm.Themoldsleeveheightis25mm,madeofmetal

material,theweightofthehopperis2.5--2.0kg.

1.4bendingtestmachine

Bendingtestmachinegenerallyadoptsdoublelevertype,alsocanuseotherpropertiesmeettherequirementsofcarbonmachine.Foldingclamp

RequirementsshallbeinaccordancewiththerequirementsofGB3350.3-82,"cementphysicalexaminationinstrument,electricbendingresistancetestingmachine",2.5-2.9.

Loadingandsupportingcolumnsmustbemadeofhardsteel.Aftercylindricalwear,allowsize0

10mm.

Zeropointtwo

1.5compressiontestingmachineandcompressionclamp

1.5.1compressiontestingmachinetonnageto20~30tisappropriate,theerrorshouldnotexceed2%.

The1.5.2compressionfixtureismadeofhardsteelandconformstoGB3350.

482"apparatusforphysicaltestofcementcompressionclamp

Regulations.

1.6flatknife

Thecrosssectionisequilateraltriangle,andtheeffectivelengthis26mm.

2materials

2.1cementsamplesshouldbewellmixed,throughthe0.9mmsquareholescreen,andrecordtheresidueofsieve.

2.2standardsandqualityinlinewiththe"GB17877cementstrengthtestwithstandardsand"requirements.

2.3testwatermustbecleanfreshwater.

3temperatureandhumidity

3.1testroomtemperature17--25DEGC（includingstrengthtestroom）,relativehumidityisgreaterthan50%.Cementspecimens,standardsand,

Thetemperatureofmixingwaterandtestdieshouldbethesameasroomtemperature.

3.2curingtanktemperature20+3degrees,relativehumidityisgreaterthan90%.Thetemperatureofcuringwateris20+2DEGC.

4testspecimenforming

4.1,themoldingwillbewipedbeforethetest,thetemplate

andthebaseofthecontactsurfaceshouldbepaintedyellowanddryoil,closeassembly,topreventleakage,

Theinnerwallisevenlycoveredwithalayerofoil.

4.2theweightratioofcementtostandardsandis1:

2.5.Watercementratioisfixedbythesamekindofcement.Portlandcement,ordinarysilicon

Acidcementandslagcementare1:

0.44;volcanicashcementandflyashcementare1:

0.46.

4.3seethetable1ofthematerialanddosagerequiredforeachtestspecimenformingthree.

Table1

Thoughtofthought---mesitylenethoughtthoughtofthought

Theamountofmaterial

--ten--------

Cement,G,540

--ten--------

Standardsand,G,1350

--ten--------

Mixingwater,ML,

Portlandcement,238

Portlandcement,238*

Slagce