1、Designation: C1877 18Standard Specification forAdhered Concrete Masonry Units1This standard is issued under the fixed designation C1877; 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 parenth
2、eses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers solid, dry-cast, concrete ma-sonry units intended for use as an interior and exterior adheredveneer and are made from portland
3、 cement, water, and suitablemineral aggregates with or without the inclusion of othermaterials.1.2 The text of this specification references notes andfootnotes which provide explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not beconsidered as requirements
4、of the standard.1.3 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.NOTE 1Adhered concrete masonry units covered by this specificationare
5、 made from lightweight or normal weight aggregates, or both.NOTE 2When particular features are desired, such as densityclassification, surface textures for appearance or bond, finish, color, fireresistance, insulation, acoustical properties, or other special features, suchproperties should be specif
6、ied separately by the purchaser. Suppliersshould be consulted as to the availability of adhered concrete masonryunits having the desired features.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on
7、 Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C33/C33M Specification for Concrete AggregatesC140/C140M Test Methods for Sampling and T
8、esting Con-crete Masonry Units and Related UnitsC150/C150M Specification for Portland CementC331/C331M Specification for Lightweight Aggregates forConcrete Masonry UnitsC426 Test Method for Linear Drying Shrinkage of ConcreteMasonry UnitsC595/C595M Specification for Blended Hydraulic CementsC618 Spe
9、cification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC979/C979M Specification for Pigments for Integrally Col-ored ConcreteC989/C989M Specification for Slag Cement for Use inConcrete and MortarsC1157/C1157M Performance Specification for HydraulicCementC1232 Terminology
10、for MasonryC1240 Specification for Silica Fume Used in CementitiousMixturesC1670/C1670M Specification for Adhered ManufacturedStone Masonry Veneer Units3. Terminology3.1 Terminology defined in Terminology C1232 shall applyfor this specification.3.2 Definitions of Terms Specific to This Standard:3.2.
11、1 adhered concrete masonry unit, na nonloadbearingconcrete masonry unit designed to be installed with a cemen-titious mortar to a backing surface.4. Materials and Manufacture4.1 Cementitious MaterialsMaterials shall conform to thefollowing applicable specifications:4.1.1 Portland CementSpecification
12、 C150/C150M.4.1.2 Modified Portland CementPortland cement con-forming to Specification C150/C150M, 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 Specification C150/C150M asmodified are me
13、t:(1) Limitation on Insoluble Residue1.5 %.(2) Limitation on Air Content of MortarVolume percent,22 % max.(3) Limitation on Loss on Ignition7 %.4.1.3 Blended Hydraulic CementsSpecification C595/C595M.4.1.4 Hydraulic CementSpecification C1157/C1157M.1This test method is under the jurisdiction of ASTM
14、 Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.03 on Concrete Masonry Units and Related Units.Current edition approved Sept. 1, 2018. Published September 2018. DOI:10.1520/C1877-182For referenced ASTM standards, visit the ASTM website, www.astm.org, o
15、rcontact 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 StatesThis international
16、standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14
17、.1.5 PozzolansSpecification C618.4.1.6 Blast Furnace Slag CementSpecification C989/C989M.4.1.7 Silica FumeSpecification C1240.4.2 AggregatesAggregates shall conform to the followingspecifications, except for the grading requirements:4.2.1 Normal Weight AggregatesSpecification C33/C33M.4.2.2 Lightwei
18、ght AggregatesSpecification C331/C331M.NOTE 3The grading requirements of Specifications C33/C33M andC331/C331M may not be suitable for the production of these units.Because of this, producers are allowed to modify grading to meet theirneeds and the requirements of this specification.4.3 Pigments for
19、 Integrally Colored ConcreteSpecification C979/C979M.4.4 Other 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
20、standards or shall be shown by test or experience not tobe detrimental 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 prescri
21、bed in Table 1.5.2 At the time of delivery to the purchaser, the averagetotal linear drying shrinkage of the three units tested shall notexceed 0.065 % when tested in accordance with 8.3.NOTE 4The purchaser is the public body or authority, association,corporation, partnership, or individual entering
22、 into a contract or agree-ment to purchase or install, or both, adhered concrete masonry units. Thetime of delivery to the purchaser is FOB plant when the purchaser or thepurchasers agent transports the adhered concrete masonry units, or at thetime unloaded at the worksite if the manufacturer or the
23、 manufacturersagent transports the adhered concrete masonry units.6. Dimensions, Weights, and Areas6.1 No overall dimension (width, height, and length) shalldiffer by more than 618 in. (3.2 mm) from the specifiedstandard dimensions.6.1.1 For those units with faces altered for aestheticpurposes, over
24、all dimensional tolerances apply only to thosedimensions not affected by the altering.NOTE 5For such units, dimensions will vary. Consult with suppliers todetermine achievable dimensional tolerances.6.2 Units shall have an average minimum thickness of 0.75in. (19 mm).6.3 The specified thickness of e
25、ach unit shall not exceed amaximum average thickness of 2.625 in. (66.7 mm).6.4 Units shall not exceed 36 in. (915 mm) in any facedimension.6.5 Units shall not exceed more than 5 ft2(0.46 m2) in totalface area.6.6 The average weight per square foot of each unit shall notexceed 15 lb/ft2(73 kg/m2). T
26、he weight per square foot shall bedetermined by multiplying the unit oven-dry density by the unitaverage thickness. Specification C1670/C1670M, Annex 1outlines the procedure for calculating the average thickness ofmasonry veneer.7. Finish and Appearance7.1 No more than5%oftheunits in the shipment sh
27、allexhibit one or more of the characteristics described in 7.1.1through 7.1.4 and 7.2.7.1.1 Units with dimensions not meeting the requirementsof 6.1.7.1.2 Units with finished face(s) containing chips larger than1 in. (25.4 mm) in any direction.7.1.3 Units with finished face(s) containing cracks wide
28、rthan 0.02 in. (0.5 mm) and longer than 25 % of the nominalheight of the unit.7.1.4 Units that are broken.7.2 Where units are to be used in exposed wall construction,the face or faces that are to be exposed shall not show chips orcracks, not otherwise permitted in 7.1.2 and 7.1.3, or otherimperfecti
29、ons when viewed from a distance of not less than 20ft (6.1 m) under diffused lighting.7.3 The color and texture of units shall be specified by thepurchaser. The finished surfaces that will be exposed in placeshall conform to an approved sample, consisting of not lessthan four units, representing the
30、 range of texture and colorpermitted.8. Methods of Sampling and Testing8.1 The purchaser or authorized representative shall beaccorded proper facilities to inspect and sample the adheredconcrete masonry units at the place of manufacture from thelots ready for delivery.8.2 Compressive strength, absor
31、ption, density, and dimen-sional tolerances shall be based on tests of adhered concreteTABLE 1 Strength, Absorption, and Density Classification RequirementsADensityClassificationOven-Dry Density ofConcrete,lb/ft3(kg/m3)Maximum Water Absorption,lb/ft3(kg/m3)Minimum Net Area Compressive Strength,lb/in
32、.2(MPa)Average of 3 Units Average of 3 Units Individual Units Average of 3 Units Individual UnitsLightweight Less than 105 (1680) 15 (240) 17 (272) 2000 (13.8) 1800 (12.4)Medium Weight 105 to less than 125(16802000)13 (208) 15 (240) 2000 (13.8) 1800 (12.4)Normal Weight 125 (2000) or more 10 (160) 12
33、 (192) 2000 (13.8) 1800 (12.4)ACompressive strength, absorption, and density determined in accordance with 8.2.C1877 182masonry units of any configuration or dimensions made withthe same materials, concrete mix design, manufacturingprocess, and curing method, conducted in accordance with TestMethods
34、 C140/C140M, Annex A1 and within 12 months ofproduction of the units.8.2.1 Compression test specimens shall comply with thefollowing:8.2.1.1 Aspect ratio (height divided by least lateraldimension, h/t)of2.06 0.1 before capping, and8.2.1.2 Length to thickness ratio (l/t)of4.06 0.1.8.3 Total linear dr
35、ying shrinkage shall be based on tests ofadhered concrete masonry units of any configuration or dimen-sions made with the same materials, concrete mix design,manufacturing process, and curing method, conducted inaccordance with Test Method C426 and within 24 months ofproduction of the units.9. Compl
36、iance9.1 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 tested at the expense
37、of 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 physicalrequirements, the remaining portion of the shipment
38、repre-sented by the sample fails to meet the specified physicalrequirements.NOTE 6Unless otherwise specified in the purchase order, the costs oftests is typically borne as follows: (1) if the results of the tests show thatthe units do not conform to the requirements of this specification, the costis
39、 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 the purchaser.10. Keywords10.1 absorption; adhered; compressive strength; concretefacing units; concrete masonry units; linear drying shrinkage;
40、portland cement; veneerASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringem
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