1、Designation: C 1634 06Standard Specification forConcrete Facing Brick1This standard is issued under the fixed designation C 1634; 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers solid, dry-cast, concrete facingbrick intended for interior and exterior use in constructingstructural and facing masonry components
3、 and are made fromportland cement, water, and suitable mineral aggregates with orwithout the inclusion of other materials.NOTE 1Specification C55addresses concrete building brick used innon-facing, utilitarian applications (previously referred to in earliereditions of Specification C 55 as Grade Sfo
4、r general use wheremoderate strength and resistance to frost action and moisture penetrationare required). This specification differs from Specification C55in that itincludes expanded consideration for properties of concrete brick used infacing applications and other exposures (previously referred t
5、o in earliereditions of Specification C55as Grade Nfor use as architectural veneerand facing units in exterior walls and for use where high strength andresistance to moisture penetration and severe frost action are desired).1.2 The text of this specification references notes andfootnotes which provi
6、de explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered as requirements of the standard.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given parentheses are for informa-tion only.NOTE 2Concrete facing b
7、rick covered by this specification are madefrom lightweight or normal weight aggregates, or both.NOTE 3When particular features are desired, such as density classi-fication, high compressive strength, surface textures for appearance orbond, finish, color, fire resistance, insulation, acoustical prop
8、erties, orother special features, such properties should be specified separately bythe purchaser. Suppliers should be consulted as to the availability ofconcrete facing brick having the desired features.2. Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC55 Specifica
9、tion for Concrete BrickC 140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC 150 Specification for Portland CementC 331 Specification for Lightweight Aggregates for Con-crete Masonry UnitsC 426 Test Method for Linear Drying Shrinkage of Con-crete Masonry UnitsC 595 Spe
10、cification for Blended Hydraulic CementsC 618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC 989 Specification for Ground Granulated Blast-FurnaceSlag for Use in Concrete and MortarsC 1157 Performance Specification for Hydraulic CementC 1209 Terminology of Co
11、ncrete Masonry Units and Re-lated UnitsC 1232 Terminology of Masonry3. Terminology3.1 Terminology defined in Terminology C 1209 and Ter-minology C 1232 shall apply for this specification.3.2 Definitions of Terms Specific to This Standard:3.3 concrete building brick, na concrete masonry unit,with a m
12、aximum width of four (4) inches and of a weight thatwill typically permit it to be lifted and placed with one hand,that is manufactured for general use in non-facing, utilitarianapplications.3.4 concrete facing brick, na concrete masonry unit, witha maximum width of four (4) inches and of a weight t
13、hat willtypically permit it to be lifted and placed with one hand, that ismanufactured to be typically used in an application where oneor more faces of the unit is intended to be exposed.4. Materials and Manufacture4.1 Cementitious MaterialsMaterials shall conform to thefollowing applicable specific
14、ations:4.1.1 Portland CementSpecification C 150.4.1.2 Modified Portland CementPortland cement con-forming to Specification C 150, modified as follows:4.1.2.1 LimestoneCalcium carbonate, with a minimum85 % CaCO3content, is permitted to be added to the cement,provided these requirements of Specificati
15、on C 150 as modi-fied are met:(1) Limitation on Insoluble Residue1.5 %.1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.03 on Concrete Masonry Units and Related Units.Current edition approved Dec. 15,
16、 2006. Published January 2007.2For 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.1Copyright ASTM International,
17、100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.(2) Limitation on Air Content of MortarVolume percent,22 % max.(3) Limitation on Loss on Ignition7%.4.1.3 Blended Hydraulic CementsSpecification C 595.4.1.4 Hydraulic CementSpecification C 1157.4.1.5 PozzolansSpecifi
18、cation C 618.4.1.6 Blast Furnace Slag CementSpecification C 989.4.2 AggregatesAggregates shall conform to the followingspecifications, except that grading requirements shall notnecessarily apply:4.2.1 Normal Weight AggregatesSpecification C33.4.2.2 Lightweight AggregatesSpecification C 331.4.3 Other
19、 ConstituentsAir-entraining agents, coloringpigments, integral water repellents, finely ground silica, andother constituents shall be previously established as suitable foruse in concrete masonry units and shall conform to applicableASTM standards or shall be shown by test or experience not tobe det
20、rimental to the durability of the concrete masonry unitsor any material customarily used in masonry construction.5. Physical Requirements5.1 At the time of delivery to the purchaser, units shallconform to the physical requirements prescribed in Table 1.5.2 At the time of delivery to the purchaser, t
21、he total lineardrying shrinkage of units shall not exceed 0.065 % when testedin accordance with Test Method C 426.NOTE 4The purchaser is the public body or authority, association,corporation, partnership, or individual entering into a contract or agree-ment to purchase or install, or both, concrete
22、facing brick. The time ofdelivery to the purchaser is FOB plant when the purchaser or thepurchasers agent transports the concrete facing brick, or at the timeunloaded at the worksite if the manufacturer or the manufacturers agenttransports the concrete facing brick.6. Dimensions, Mass, and Permissib
23、le Variations6.1 No overall dimension (width, height, and length) shalldiffer by more than 618 in. (3.2 mm) from the specifiedstandard dimensions.NOTE 5Standard dimensions of concrete facing brick are the manu-facturers designated dimensions. Nominal dimensions of modular sizeconcrete facing brick a
24、re equal to the standard dimensions plus thethickness of one mortar joint. Nominal dimensions of nonmodular sizeconcrete facing brick usually exceed the standard dimensions by18 to14in. (3.2 to 6.4 mm).6.1.1 For those units with faces altered for aestheticpurposes, overall dimensional tolerances app
25、ly only to thosedimensions not affected by the altering.NOTE 6For such units, dimensions will vary. Consult with suppliersto determine achievable dimensional tolerances.6.2 For cored concrete facing brick, the net cross-sectionalarea in any plane parallel to the surface containing the coresshall be
26、at least 75 % of the gross cross-sectional areameasured in the same plane. No part of any hole shall be lessthan34 in. (19.1 mm) from any edge of the unit.7. Finish and Appearance7.1 All units shall be sound and free of cracks or otherdefects that interfere with the proper placement of the units ors
27、ignificantly impair the strength or permanence of the construc-tion. Minor cracks incidental to the usual method of manufac-ture or minor chipping resulting from customary methods ofhandling in shipment and delivery are not grounds for rejec-tion.7.2 Where units are to be used in exposed wall constr
28、uc-tion, the faces shall not show chips or cracks not otherwisepermitted or other imperfections when viewed from a distanceof not less than 20 ft (6.1 m) under diffused lighting.7.2.1 Five percent of a shipment containing chips, notlarger than12 in. (12.7 mm) in any dimension, or cracks notwider tha
29、n 0.02 in. (0.5 mm) and not longer than 25 % of thenominal height of the unit, is permitted.7.3 The color and texture shall be specified by the purchaser.The exposed faces shall conform to an approved sampleconsisting of not less than four units, representing the range oftexture and range of color p
30、ermitted.8. Methods of Sampling and Testing8.1 The purchaser or authorized representative shall beaccorded proper facilities to inspect and sample the concretefacing brick at the place of manufacture from the lots ready fordelivery.8.2 Sample and test concrete facing brick in accordancewith Test Met
31、hods C 140 and Test Method C 426, whenapplicable.8.3 Total linear drying shrinkage shall be based on tests ofconcrete facing brick made with the same materials, concretemix design, manufacturing process, and curing method, con-ducted in accordance with Test Method C 426 not more than 24months prior
32、to delivery.9. Compliance9.1 If a sample fails to conform to the specified physicalrequirements, the manufacturer shall be permitted to removeunits from the shipment. A new sample shall be selected by thepurchaser from remaining units from the shipment with asimilar configuration and dimension and t
33、ested at the expenseof the manufacturer. If the second sample meets the specifiedphysical requirements, the remaining portion of the shipmentrepresented by the sample meets the specified physical require-ments. If the second sample fails to meet the specified physicalTABLE 1 Strength, Absorption, an
34、d Density Classification RequirementsADensityClassificationOven-Dry Densityof Concrete, lb/ft3(kg/m3)Maximum WaterAbsorption, lb/ft3(kg/m3)Minimum Net AreaCompressive Strength, lb/in2(MPa)Average of 3 Units Average of 3 Units Individual Units Average of 3 Units Individual UnitsLightweight Less than
35、105 (1680) 15 (240) 17 (272) 3500 (24.1) 3000 (20.7)Medium Weight 105 to less than 125 (16802000) 13 (208) 15 (240) 3500 (24.1) 3000 (20.7)Normal Weight 125 (2000) or more 10 (160) 12 (192) 3500 (24.1) 3000 (20.7)AAverage oven-dry density, based on a set of three units, shall fall within ranges defi
36、ned in the table to be classified as lightweight, medium weight, or normal weight.C1634062requirements, the remaining portion of the shipment repre-sented by the sample fails to meet the specified physicalrequirements.NOTE 7Unless otherwise specified in the purchase order, the costs oftests is typic
37、ally borne as follows: (1) if the results of the tests show thatthe units do not conform to the requirements of this specification, the costis typically borne by the seller; (2) if the results of the tests show that theunits conform to the specification requirements, the cost is typically borneby th
38、e purchaser.10. Keywords10.1 absorption; brick; compressive strength; concretebrick; concrete building brick; concrete facing brick; concretemasonry units; linear shrinkage; portland cementASTM International takes no position respecting the validity of any patent rights asserted in connection with a
39、ny item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technica
40、l committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration
41、at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor
42、 Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C1634063
