ASTM_C_466_-_03_2012.pdf

Designation:C46603(Reapproved 2012)Standard Specification forChemically Setting Silicate and Silica Chemical-ResistantMortars1This standard is issued under the fixed designation C466;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 indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers requirements for chemicallysetting silicate and silica chemical-resistant mortars for bond-ing chemical-resistant masonry units.NOTE1For information on the use of these materials,see PracticeC397.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2C279 Specification for Chemical-Resistant Masonry UnitsC321 Test Method for Bond Strength of Chemical-ResistantMortarsC397 Practice for Use of Chemically Setting Chemical-Resistant Silicate and Silica MortarsC413 Test Method for Absorption of Chemical-ResistantMortars,Grouts,Monolithic Surfacings,and PolymerConcretesC414 Test Method for Working,Setting,and ServiceStrength Setting Times of Chemically Setting Chemical-Resistant Silicate and Silica MortarsC531 Test Method for Linear Shrinkage and Coefficient ofThermal Expansion of Chemical-Resistant Mortars,Grouts,Monolithic Surfacings,and Polymer ConcretesC579 Test Methods for Compressive Strength of Chemical-Resistant Mortars,Grouts,Monolithic Surfacings,andPolymer ConcretesC580 Test Method for Flexural Strength and Modulus ofElasticity of Chemical-Resistant Mortars,Grouts,Mono-lithic Surfacings,and Polymer ConcretesC904 Terminology Relating to Chemical-Resistant Nonme-tallic Materials3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard specifi-cation,see Terminology C904.4.Types of Mortars4.1 Single and Multicomponent:4.1.1 A single component mortar consists of a binderpowder,a setting agent,and a chemically inert solid filler(s)towhich potable water is added to make a trowelable mortar.4.1.2 A multicomponent mortar consists of a binder liquid,a powder containing a setting agent,and a chemically inertsolid filler(s)which are combined to form a trowelable mortar.4.1.3 Some single and multicomponent mortars may permitthe addition of a properly graded,high-purity silica sand inaccordance with the manufacturers recommendation.5.Chemical Composition5.1 The setting agent generally used is an acid compoundthat reacts with the silicate binders,or an alkaline compoundthat reacts with the silica sol binder,to form an insoluble silicagel.The filler materials shall be selected to have resistance tothe particular chemicals to which they will be exposed.Theservice limitations of the filler shall be defined by the manu-facturer.6.Physical Requirements6.1 Chemically setting silicate or silica chemical-resistantmortars prepared from these materials shall conform to therespective physical requirements prescribed in Table 1.7.Performance Requirements7.1 The liquid binder shall be of a viscosity that will permitit to be readily mixed manually with the filler.The filler shallhave properly graded particles that will permit the preparationof a joint thickness of18in.(3.2 mm).1This specification is under the jurisdiction of ASTM Committee C03 onChemical-Resistant Nonmetallic Materialsand is the direct responsibility of Sub-committee C03.02 on Monolithics,Grouts and Polymer Concretes.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1961.Last previous edition approved in 2008 as C466 03(2008).DOI:10.1520/C0466-03R12.2For referenced ASTM standards,visit the ASTM website,www.astm.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.Test Methods8.1 The properties enumerated in this specification shall bedetermined in accordance with the following methods:8.1.1 Bond StrengthTest Method C321.Brick described inSpecification C279 shall be used in this test.8.1.2 AbsorptionTest Method C413.8.1.3 Working Life and Setting TimesTest Method C414.8.1.4 ShrinkageTest Method C531.8.1.5 Compressive StrengthTest Methods C579.8.1.6 Flexural StrengthTest Method C580.9.Packaging and Package Marking9.1 Single component mortars shall be packaged properly toprevent deterioration in storage.9.2 For multicomponent mortars,the binder liquid shall bepackaged in suitable containers and marked to denote the typeof silicate or silica solution.The powder shall be packagedproperly to prevent deterioration in storage.10.Keywords10.1 masonry units;chemical-resistant;mortars;chemical