1、Designation: C717 11aStandard Terminology ofBuilding Seals and Sealants1This standard is issued under the fixed designation C717; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses in
2、dicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard describes terms and definitions and de-scriptions of terms used or likely to be used in test methods,specifications, guides, and practices (relat
3、ed to building sealsand sealants) consistent with the scope and areas of interest ofASTM Committee C24.1.2 Definitions and descriptions of terms are written toensure that building seals and sealants standards are properlyunderstood and interpreted.2. Referenced Documents2.1 ASTM Standards:2A644 Term
4、inology Relating to Iron CastingsC509 Specification for Elastomeric Cellular PreformedGasket and Sealing MaterialC542 Specification for Lock-Strip GasketsC716 Specification for Installing Lock-Strip Gaskets andInfill Glazing MaterialsC790 Guide for Use of Latex Sealants3C797 Practices for Use of Oil
5、- and Resin-Based Putty andGlazing Compounds3C961 Test Method for Lap Shear Strength of SealantsC964 Guide for Lock-Strip Gasket GlazingC1021 Practice for Laboratories Engaged in Testing ofBuilding SealantsC1193 Guide for Use of Joint SealantsD883 Terminology Relating to PlasticsD1079 Terminology Re
6、lating to Roofing and WaterproofingD1565 Specification for Flexible Cellular MaterialsVinylChloride Polymers and Copolymers (Open-Cell Foam)3D1566 Terminology Relating to RubberD2102 Test Method for Shrinkage of Textile Fibers (BundleTest)E631 Terminology of Building Constructions3. Significance and
7、 Use3.1 Definitions:3.1.1 Terms and their related standard definitions in Section4 are intended for use uniformly and consistently in all buildingseals and sealants test methods, specifications, guides, andpractices. The purpose of such use is to promote a clearunderstanding and interpretation of th
8、e standards in which theyare used.3.1.2 Definitions of terms are written in the broadest sensepossible, consistent with the intended meaning. Definitionshave not been limited to a specific technical field when theycan have a multi-field application.3.1.3 The definition of a term that can have differ
9、entmeanings in different technical fields is preceded by a phraselimiting it to the specific field intended, that is, “in buildingconstruction.”3.2 Description of Terms:3.2.1 Descriptions of Terms are special purpose definitionsintended to provide a precise understanding and interpretationof the sea
10、ls and sealants standards in which they are used.3.2.2 A specific description of a term is applicable to thestandard or standards in which the term is described and used.3.2.3 Each standard in which a term is used, in a speciallydefined manner, should list the term and its description underthe subhe
11、ading, descriptions of terms.4. Terminology4.1 Terms and Definitions:adhesion failure, nin building construction, failure of thebond between a sealant and a substrate.DISCUSSIONThis definition pertains to interfacial adhesion failure, alack of bond at the interface between the materials. Interphasal
12、adhesion failure, within the sealant or substrate near the interface, isless common and may appear to be interfacial without the use ofmagnification.adhesive failure, nuse adhesion failure (preferred term).aerosol container, empty, nin building construction,anaerosol container is considered empty wh
13、en the product flowreaches 0.5 g per second or less.1This terminology is under the jurisdiction of ASTM Committee C24 onBuilding Seals and Sealants and is the direct responsibility of Subcommittee C24.01on Terminology of Building Seals and Sealants.The boldface designations refer to the original sou
14、rce of the definition and theASTM Technical Committee having jurisdiction.Current edition approved March 1, 2011. Published March 2011. Originallyapproved in 1972. Last previous edition approved in 2011 as C717 11. DOI:10.1520/C0717-11A.2For referenced ASTM standards, visit the ASTM website, www.ast
15、m.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1Copyright ASTM International
16、, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.back bedding, nSee bedding.back putty, nSee bedding.back-up materialSee sealant backing.bead, nin building construction, in sealants and glazing, astrip of applied sealant, glazing compound, or putty.bed, vin build
17、ing construction in glazing, to apply a bead ofsealant between a lite of glass or a panel and the stationarystops or sight bars of the sash or frame.bed, nSee bedding.bedding, nin building construction in glazing, a bead ofsealant applied between a lite of glass or a panel and thestationary stop or
18、sight bar of the sash or frame. It is usuallythe first bead to be applied when setting glass or panels.bite, nin building construction in glazing, the effectivestructural contact dimension of a structural sealant. (See Fig.1 and Fig. 2.)bloom, nin building construction, a substance formed byblooming
19、.blooming, vin building construction, movement or diffusionof a component such as a plasticizer, monomer, unreactedpolymer or other formulation ingredient to a sealant surface.bond breakerin building construction, a material to preventadhesion at a designated interface.Fig. 3.)caulk, vin building co
20、nstruction, to install or apply a sealantacross or into a joint, crack, or crevice.caulk, nSee sealant.caulking, nSee sealant.caulking compound, nSee sealant.cell, na single small cavity surrounded partially or com-pletely by walls. D1566;D11cellular material, na generic term for materials containin
21、gmany cells (either open, closed, or both) dispersed throughFIG. 1 Typical Structural Sealant Joint ConfigurationsC717 11a2the mass. D1565, D1566;D11chalk, nin building construction, a powder formed bychalkingDISCUSSIONThe powder is not necessarily white.chalking, vin building construction, formatio
22、n of a powderon the surface of a sealant that is caused by the disintegrationof the polymer or binding medium due to weathering.DISCUSSIONChalk on a light color sealant is often white, however adarker color can also exhibit chalking.closed cell, na cell totally enclosed by its walls and hencenot int
23、erconnecting with other cells. D883; D20closed cell material, na cellular material in which substan-tially all cells in the mass are closed cells.cohesive failure, nin building construction, failure charac-terized by rupture within the sealant, adhesive, or patibility, nin building construction, the
24、 capability oftwo or more materials to be placed in contact, or near enoughto interact, with no detrimental patible materials, nSee pound, nan intimate mixture of all the ingredientsnecessary for a finished material or product.crazed, adjin building construction, having a random net-work of cracks i
25、n a sealant surface which do not penetratethrough the body of the material.crazed, adjin building construction, exhibiting crazing.crazing, nin building construction, a network of fine cracksin the surface of a sealant.DISCUSSIONCrazing may or may not affect product performance.crazing, vin building
26、 construction, the formation of anetwork of random surface cracks in a sealant.creep, nthe time dependent part of a strain resulting fromstress. D1079; D08cure, vin building construction, to attain the intendedperformance properties of a compound by means of evapo-ration, chemical reaction, heat, ra
27、diation, or combinationsthereof.cure, nin building construction, the process by which acompound attains its intended performance properties bymeans of evaporation, chemical reaction, heat, radiation, orcombinations thereof.cured, adjin building construction, pertaining to the state ofa compound that
28、 has attained its intended performanceproperties by means of evaporation, chemical reaction, heat,radiation, or combinations thereof.design life, nin building construction, the period of timeafter installation during which a seal or sealant is expected toperform its stated intended-function(s) with
29、proper mainte-nance.DISCUSSIONProper maintenance includes, among others, replace-ment of discrete localized failures.dirt pick-up, nin building construction, soiling caused by aforeign material other than micro-organism growth that isdeposited on, adhered to, or embedded into a sealant.DISCUSSIONMic
30、ro-organism growth can produce a similar appear-ance.durabilityin building construction, the ability of a seal orsealant to perform its required functions over a period oftime within the environment to which it is exposed.DISCUSSIONA seal or sealants required functions may includeaesthetic, economic
31、, and functional performance considerations, amongothers.durability limit, nsee the preferred term, service life.elastomer, nfor gaskets and couplings for plumbing andsewer piping, a macromolecular material that returns rapidlyFIG. 2 Applied Load Transfer at a Vertical Corner Structural Sealant Join
32、t (see Fig. 1 for Legend)C717 11a3to approximately its original dimensions and shape aftersubstantial deformation by a weak force and release of theforce.DISCUSSIONa) Elastomers are divided into two major polymersystems-thermoset and theromplastic. b) In standards for rubber, theword elastomer is no
33、t to be used interchangeably for the term “rubber”.D1566;D11elastomer, nin building construction in glazing, a macromo-lecular material, which deformed within its service tempera-ture range, is capable of recovering substantially in size andshape after removal of a deforming force.elastomer, thermop
34、lastic, na material having the generalproperties of an elastomer and capable of being repeatedlysoftened by heat and hardened to shape by cooling withoutsignificant degradation of the polymer system.DISCUSSIONThermoplastic elastomers have some of the propertiesof thermoset elastomers, but are typica
35、lly more thermally and pressuresensitive and more sensitive to solvents.elastomer, thermoset, nan elastomeric material that attainsits intended properties by an irreversible cross-linking reac-tion caused by heat alone, heat with a cross-linking agent,chemical interaction, or by radiation; whereby a
36、fter cross-linking, any reprocessing with heat and pressure will se-verely degrade the material.DISCUSSIONCross-linking renders the material substantially in-soluble in organic solvents (can swell), less plastic, and with improvedelastic and mechanical properties (compared to its uncured state) over
37、an extended temperature range.elastomeric, adjhaving the characteristics of an elastomer.elongation, nextension produced by a tensile stress.D1566;D11extrudability, nin building construction, the ability of asealant under pressure to flow through an orifice.flow, vin building construction, the defor
38、mation of a tapesealant under stress.fluid migration, nin building construction, accumulation ofa fluid from a sealant on or in an adjacent material.DISCUSSIONMigration of a non-fluid component can also occur.gasket, nany preformed, deformable device designed to beplaced between two adjoining parts
39、to provide a seal.gasket, compression, na gasket designed to be used undercompression.gasket, lock-strip, nin building construction, a gasket inwhich sealing pressure is attained by inserting a keyedlocking strip into a mating keyed groove in one face of thegasket.glazing, vin building construction,
40、 the installation of glass orother materials in prepared openings.glazing, butt, nin building construction, a glazing systemwherein butt joints are formed between lites and filled witha glazing sealant.glazing, compression, nsee glazing system, compression.glazing, compression, vin building construc
41、tion, the act ofinstalling components into a compression glazing system.glazing, construction site, nin building construction, theinstallation of glass or panels into a metal framing system, ata construction site, under generally uncontrolled environ-mental conditions.glazing, face, nthe method of g
42、lazing in which a rabbetedglazing recess, with no removable stop, is used and atriangular bead of compound is applied to the face of the liteand extended onto the recess.glazing, factory, nSee glazing, shop.glazing, field, nSee glazing, construction site.glazing, four-side structural sealant, nin bu
43、ilding con-struction, a glazing system wherein all sides of arectangular-shaped lite or panel are structural sealant glazed.glazing, needlein building construction, the application of asmall bead of a sealant at the sight line adhering to the sashand glass or panel by means of a nozzle with an orifi
44、ce notexceeding 3.18 mm 18 in. in diameter.ASealantBSealant backingCBond breakerDJointESubstrate faceFSubstrate edgeFIG. 3 Butt Sealant JointC717 11a4glazing, non-compression, nsee glazing system, non-compression.glazing, non-compression, vin building construction, theact of installing components in
45、to a non-compression glazingsystem.glazing, protective, nin building construction, systems withglazed openings that are designed to mitigate the effects ofbomb blasts, projectiles, natural disasters, or forced entry.DISCUSSIONProtective glazing systems assist in the mitigation ofthe potential for ha
46、zardous debris dispersal from natural disasters,withstand projectile impact and resist unauthorized human entrythrough glazed openings. Protective glazing systems include theselection of an appropriate glazing material, the design of metalframing members and their anchorages, and the retention of th
47、e glazingmaterial within the framing all to resist a specified threat.glazing, shop, nin building construction, the installation ofglass or panels into a metal framing system under controlledenvironmental conditions.DISCUSSIONShop glazing typically occurs at a location remote to aconstruction site.
48、However, shop glazing can be performed at theconstruction site if acceptable to the code authority and providedappropriate management controls and environmental conditions aremaintained.glazing, stoplessSee glazing, structural sealant, the pre-ferred term.DISCUSSIONInappropriately used to describe s
49、tructural sealant glaz-ing.glazing, structural sealant, nin building construction,aglazing system wherein a structural sealant is used to transferloads between a lite or panel and a supporting framework,without mechanical fasteners or other methods of attach-ment.glazing, two-side structural sealant, nin building construc-tion, a glazing system wherein two sides of a rectangular-shaped lite or panel, usually opposing, are structural sealantglazed.g
