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Product Code:SAE AMS3799/3
Title:Webbing, Tubular, Low Modulus Aramid 1 (25) Wide, 4000 (17,793) Breaking Strength
Issuing Committee:Ams P Polymeric Materials Committee
Scope: This specification covers one width and one strength of low modulus aramid tubular webbing. This product has been used typically in construction of parachutes, but usage is not limited to such applications. 1 inch (25.4 mm) wide low modulus aramid tubular webbing having 4000 pounds force (17,793 N) breaking strength.
Rationale: This specification covers one width and one strength of low modulus aramid tubular webbing. This product has been used typically in construction of parachutes, but usage is not limited to such applications. 1 inch (25.4 mm) wide low modulus aramid tubular webbing having 4000 pounds force (17,793 N) breaking strength.【英文标准名称】:StandardTestMethodsforEvaluatingMasonryBondStrength
【原文标准名称】:评定砖石砌合强度的标准试验方法
【标准号】:ASTMC1357-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C15.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:flexuralbondstrength;masonry;Bondstrength--masonry/mortar;Masonrystrength;Masonryunits
【摘要】:Thistestmethodisintendedforuseincomparingthebondstrengths(underthegivenconditions)ofmasonrymortars,asdeterminedinaccordancewithTestMethodC1072.Thistestmethodcouldbeused,forexample,tocheckoneaspectofthequalityofmortarproductsafterproduction,ortoindicatethebondpotentialofamortarproductwithoutrequiringtheproducttobetestedincombinationwithmanydifferentunits.Thistestmethodusescontrolledconditionsoffabricationandcuringthatarenotintendedtorepresentfieldconditions.Thistestmethodusesstandardconcretemasonryunits.Mortarsarebatchedbyweightequivalentsofvolumeproportionsandaremixedtoaprescribedflow.Prismsareconstructedusingajigandarebag-cured.Flexuralbondstrengthdeterminedbythistestmethodshallnotbeinterpretedastheflexuralbondstrengthofawall(becausestandardunitsarenotusedforwallconstruction),norshallitbeinterpretedasanindicationofextentofbondforpurposesofwaterpermeabilityevaluation.1.1Thesetestmethodscovertheevaluationofflexuralbondstrength,normaltothebedjoints,ofmasonrybuiltofmanufacturedmasonryunits,asdeterminedinaccordancewithTestMethodC1072.Samplingandtestingproceduresarereferenced,andtermsaredefined.Twodifferenttestmethodsarespecified,eachforadifferentpurpose:1.1.1Thefirsttestmethodisthex201C;TestMethodforLaboratory-PreparedSpecimens.x201D;Itspurposeistocomparethebondstrengths(underthegivenconditions)ofmasonrymortars.Itcouldbeused,forexample,tocheckthequalityofmortarproductsafterproduction,ortoindicatethebondstrength(underthegivenconditions)ofamortarproductwithoutrequiringtheproducttobetestedincombinationwithmanydifferentunits.Itisnotintendedtorepresentfieldconditions.Itusesstandardconcretemasonryunits.Mortarsarebatchedbyweightequivalentsofvolumeproportionsandaremixedtoaprescribedflow.Prismsareconstructedusingajigandarebag-cured.Note18212;Standardfiredclaymasonryunitsareunderdevelopmentbutarenotnowavailable.Whentheirdevelopmentiscomplete,theywillbeincorporatedintothesetestmethods.1.1.2Thesecondtestmethodisthex201C;TestMethodforField-PreparedSpecimens.x201D;Itspurposeistoevaluatethebondstrength(underthegivenconditions)ofaparticularunit-mortarcombination,eitherforpreconstructionevaluationofmaterialsorforqualitycontrolpurposesduringconstruction.Mortarsarebatchedconventionally,andtheflowisnotprescribed.Prismsareconstructedconventionally(nojig)andarebag-cured.1.1.3Thetwotestmethodsarenotconsistent,noraretheyintendedtobe.Theyareintendedtobeusedfortwodifferentpurposes.Tomakethisclear,thetwomethodsarepresentedseparately.1.1.4AppendixX1suggeststwopossiblecriteriaforassessingthebondstrengthvaluesobtainedusingthesetestmethods.Thesepossibleevaluationcriteriaaregivenforillustrationonlyandarenotmandatory.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddetermine......
【中国标准分类号】:P24
【国际标准分类号】:91_080_30
【页数】:9P.;A4
【正文语种】:英语