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Standard Specification for Grout for Masonry1

Designation: C476 10 Standard Specification forGrout for Masonry1 This Standard is issued under the fixed designation C476; 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 Standard has been approved for use by agencies of the Department of Scope* This specification covers two types of Grout , fine andcoarse Grout , for use in the construction of masonry type (fine and coarse) is further classified as conventionalgrout (requiring mechanical consolidation by puddling orvibration when placed) and self-consolidating Grout (not re-quiring mechanical consolidation when placed). Conventionalgrout is specified by (1) proportions or (2) strength require-ments.

3.1.4 Water—Water shall be clean and potable. 3.1.5 Admixtures—Integral waterproofing compounds, ac- celerators, or other admixtures not mentioned definitely in the specification shall not be used in grout for use in reinforced masonry without approval from the purchaser.

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Transcription of Standard Specification for Grout for Masonry1

1 Designation: C476 10 Standard Specification forGrout for Masonry1 This Standard is issued under the fixed designation C476; 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 Standard has been approved for use by agencies of the Department of Scope* This specification covers two types of Grout , fine andcoarse Grout , for use in the construction of masonry type (fine and coarse) is further classified as conventionalgrout (requiring mechanical consolidation by puddling orvibration when placed) and self-consolidating Grout (not re-quiring mechanical consolidation when placed). Conventionalgrout is specified by (1) proportions or (2) strength require-ments.

2 Self-consolidating Grout is specified by strength The text of this specification references notes andfootnotes that provide explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered as requirements of this 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 Referenced standards :2C5 Specification for Quicklime for Structural PurposesC143/C143 MTest Method for Slump of Hydraulic-CementConcreteC150 Specification for Portland CementC207 Specification for Hydrated Lime for masonry Pur-posesC260 Specification for Air-Entraining Admixtures for Con-creteC404 Specification for Aggregates for masonry GroutC494/C494 MSpecification for Chemical Admixtures forConcreteC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC989 Specification for Slag Cement for Use in Concreteand MortarsC1019 Test Method for Sampling and Testing GroutC1157 Performance Specification for Hydraulic CementC1611/C1611 MTest Method for Slump Flow of Self-Consolidating Concrete3.

3 Materials used as ingredients in Grout shall conform tothe requirements specified Materials Cementitious materials shallconform to one of the following Cement Type I, IA, II, IIA, III, and IIIAof Cements Type IS, IS(MS), IS-A, IS-A(MS), IP, or IP-A of SpecificationC595or types GU, HE,MS, or HS of Lime Type S of Fly Ash or Raw Calcined Natural Pozzolan SpecificationC618. Addition rates shall be in an amountgoverned by the portland-pozzolan cement category of Speci-ficationC595. The Grout produced with blends of portlandcement and fly ash or raw calcined natural pozzolan shall havethe compressive strength specified ( ). Blast Furnace Slag SpecificationC989. Addition rates shall be as governed by the portland blastfurnace slag cement category of SpecificationC595. Groutsproduced with blends of portland cement and granulated blastfurnace slag shall have the compressive strength specified( ).

4 Admixtures Air-entraining admix-tures shall conform to Aggregates shall conform to specification is under the jurisdiction of ASTM CommitteeC12onMortars and Grouts for Unit masonry and is the direct responsibility of Grout & Grout Admixtures for edition approved June 1, 2010. Published June 2010. Originallyapproved in 1961. Last previous edition approved in 2009 as C476 09. referenced ASTM standards , visit the ASTM website, , orcontact ASTM Customer Service at ForAnnual Book of ASTMS tandardsvolume information, refer to the Standard s Document Summary page onthe ASTM *A Summary of Changes section appears at the end of this ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States. Copyright by ASTM Int'l (all rights reserved); Tue May 1 18:35:58 EDT 2012 Downloaded/printed byRobert Wildman ( masonry +Institute+Of+Washington) pursuant to License Agreement.

5 No further reproductions Water shall be clean and Integral waterproofing compounds, ac-celerators, or other admixtures not mentioned definitely in thespecification shall not be used in Grout for use in reinforcedmasonry without approval from the for Self-consolidating Grout High-range water-reducing admixtures conforming to SpecificationC494/C494M, Type F or G, and viscosity-modifying admix-tures conforming to SpecificationC494/C494M, Type S, forproducing self-consolidating Grout are Polycarboxylate-based high-range water-reducing admixturesare best suited to achieve the water reduction and slump flow valuesrequired for self-consolidating Grout . While viscosity-modifying admix-tures are acceptable for producing self-consolidating Grout , there currentlyare no ASTM specifications specifically for these admixtures. TheC494/C494 Mrequirements for Type S (specific performance) admixtureprovide a means of determining that the viscosity-modifying admixturewill not have adverse effects on fresh, hardened and durability propertiesof the Grout .

6 Admixture suppliers should be consulted to ensure that theparticular high-range water-reducing admixture and viscosity-modifyingadmixture being used are suitable for production of Aids Pumping aids are permitted to be usedin cases where the brand, quality, and quantity are approved inwriting by the purchaser or are definitely stipulated in Compounds No antifreeze liquids, salts,or other substances shall be used in Grout to lower the of Materials Cementitious materials andaggregates shall be stored in such a manner as to preventdeterioration or intrusion of foreign material or moisture. Anymaterial that has become unsuitable for good construction shallnot be If the Grout is to be used to bond masonry units to reinforcingbars, the use of air-entraining materials or air-entraining admixtures is Grout Type and Grout type shall be specified as fine or Fine Grout shall be manufactured with fine Coarse Grout shall be manufactured with a combina-tion of coarse and fine Building code provisions and Grout space dimensions shouldbe reviewed when selecting Grout type or of Ingredients Proportions shall be deter-mined as Grout Proportions shall be determinedby one of the following Requirements ofTable Compressive Strength Proportions estab-lished by 28-day compressive strength tests in accordance withTest MethodC1019that equal or exceed the specified com-pressive strength.

7 The Grout shall be mixed to a slump of 8 to11 in. (200 to 280 mm) as determined by Test MethodC143/C143 Mand shall have a minimum compressive strengthof 2000 psi (14 MPa) at 28 Grout Proportions shall be deter-mined by the following Compressive Strength Proportions estab-lished by 28-day compressive strength tests in accordance withTest MethodC1019that equal or exceed the specified com-pressive strength. The Grout shall be mixed to a slump flow of24 to 30 in. (610 to 760 mm) as determined by Test MethodC1611/C1611 Mand shall have a Visual Stability Index (VSI)of not greater than 1 as determined by Appendix X1 of TestMethodC1611/C1611M. The Grout shall have a minimumcompressive strength of 2000 psi (14 MPa) at 28 The value for T50as described in Appendix and of Test MethodC1611/C1611 Mis a property of self-consolidatingconcrete and can be used as an indicator of batch-to-batch quality,consistency and performance in-situ of self-consolidating Grout .

8 Whilethere is no consensus as to the appropriate T50for all self-consolidatinggrouts, average values from to 4 sec, with variations sec fromthe average value, determined for the particular self-consolidating Grout ,typically provide proper viscosity and indicate batch-to-batch Building code provisions should be reviewed when selectingthe specified compressive strength of Measurement and of Materials Measure materials forgrout such that the required proportions of the Grout materialsare controlled and accurately 1 Conventional Grout Proportions by VolumeTypeParts by Volume ofPortland Cement orBlended CementParts by Volume ofHydrated Lime or LimePuttyAggregate,Measured in a Damp, Loose ConditionFineCoarseFine grout10 1 1021 4 3 times the sum of thevolumes of the grout10 1 1021 4 3 times the sum of thevolumes of the cementitiousmaterials1 2 times the sum of thevolumes of the cementitiousmaterialsC476 102 Copyright by ASTM Int'l (all rights reserved); Tue May 1 18:35:58 EDT 2012 Downloaded/printed byRobert Wildman ( masonry +Institute+Of+Washington) pursuant to License Agreement.

9 No further reproductions When converting volume proportions to batch weights, usethe following material bulk densities:MaterialWeight, lb/ft3(kg/m3)Portland cement94 (1505)Blended cementObtain from bag or sup-plierOther cementitious mate-rialsObtain from bag or sup-plierHydrated lime40 (640)Lime puttyA80 (1280)Sand, damp and loose80 (1280) of dry sandCoarse aggregateRefer toC404to deter-mine weight per quicklime should be slaked in accordance with the manufacturer sdirections. All quicklime putty, except pulverized quicklime putty, should be sievedthrough a No. 20 (850- m) sieve and allowed to cool until it has reached atemperature of 80 F ( C). Quicklime putty should weigh at least 80 lb/ft3(281kg/m3). Putty that weighs less than this may be used in the proportion specifica-tions if the required quantity of extra putty is added to meet the minimum Methods Grout shall be produced usingone of the following Materials Mixed with Water at the Job Grout :(1)Individual cementitious materials and aggregates storedat the job site shall be mixed in a mechanical mixer for aminimum of 5 min with sufficient water to achieve the desiredconsistency.

10 (2)Individual ingredients transported to the job site insuitable compartments shall be mixed with water at the job siteusing continuous volumetric proportioning equipment toachieve the desired consistency. Mix with an auger of appro-priate length to provide adequate mixing.(3)Factory pre-blended Grout materials delivered to the jobsite shall be mixed in a mechanical batch mixer for a minimumof 5 min or in a continuous mixer following mixer manufac-turer s recommendation with sufficient water to achieve thedesired Conventional Grout may be hand-mixed on small jobs withwritten approval of the mixing procedure by the Grout :(1)Individual ingredients transported to the job site as partof a self-consolidating Grout manufacturer s system, shall bemixed at the job-site with water, per the manufacturer srecommendations, using continuous volumetric proportioningequipment to achieve the desired consistency.


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