1、Designation: C129 14aStandard Specification forNonloadbearing Concrete Masonry Units1This standard is issued under the fixed designation C129; 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 p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers hollow and solid nonloadbear-ing
3、concrete masonry units made from portland cement, water,and mineral aggregates with or without the inclusion of othermaterials. These units are intended for use in nonloadbearingpartitions, but under certain conditions they may be suitable foruse in nonloadbearing exterior walls above grade whereeff
4、ectively protected from the weather.1.2 The text of this standard references notes and footnotesthat provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.1.3 The values stated in inch-pound units are to
5、be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.NOTE 1Concrete masonry units covered by this specification aremade from lightweight or normal weight aggregates, or both.NOTE 2When pa
6、rticular features are desired, such as densityclassification, surface texture for appearance or bond, finish, color, fireresistance, insulation, acoustical properties, or other special features, suchproperties should be specified separately by the purchaser. However,suppliers should be consulted as
7、to the availability of units having thedesired features.2. Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC150 Specification for Portland CementC207 Specification for Hydrated Lime for
8、 Masonry Pur-posesC331 Specification for Lightweight Aggregates for ConcreteMasonry UnitsC426 Test Method for Linear Drying Shrinkage of ConcreteMasonry UnitsC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC98
9、9 Specification for Slag Cement for Use in Concrete andMortarsC1157 Performance Specification for Hydraulic CementC1232 Terminology of Masonry3. Terminology3.1 Terminology defined in Terminology C1232 shall applyfor this specification.4. Classification4.1 Nonloadbearing concrete masonry units manufa
10、cturedin accordance with this specification shall conform to one ofthree density classifications prescribed in Table 1.5. Materials and Manufacture5.1 Cementitious MaterialsMaterials shall conform to thefollowing applicable specifications:5.1.1 Portland CementSpecification C150.5.1.2 Blended Hydraul
11、ic CementsSpecification C595.5.1.3 Hydraulic CementSpecification C1157.5.1.4 Hydrated Lime, Type SSpecification C207.5.1.5 Ground Granulated Blast Furnace SlagSpecification C989.5.1.6 PozzolansSpecification C618.5.2 AggregatesAggregates shall conform to the followingASTM specifications, except that
12、grading requirements shallnot necessarily apply:5.2.1 Normal Weight AggregatesSpecification C33.5.2.2 Lightweight AggregatesSpecification C331.5.3 Other ConstituentsAir-entraining agents, coloringpigments, integral water repellents, finely ground silica, andother constituents, shall be previously es
13、tablished as suitablefor use in concrete masonry and shall conform to applicableASTM standards or shall be shown by test or experience not to1This specification is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.03 on Conc
14、rete Masonry Units and Related Units.Current edition approved Dec. 1, 2014. Published January 2015. Originallyapproved in 1937. Last previous edition approved in 2014 as C129 14. DOI:10.1520/C0129-14A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servi
15、ce at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2
16、959. United States1be detrimental to the durability of the concrete masonry unitsor any material customarily used in masonry construction.6. Physical Requirements6.1 At the time of delivery to the purchaser, units shallconform to the strength requirements prescribed in Table 2. Allunits shall be sou
17、nd and free of cracks or other defects thatinterfere with the proper placement of the units or significantlyimpair the strength or permanence of the construction. Minorcracks incidental to the usual method of manufacture or minorchipping resulting from customary methods of handling inshipment and de
18、livery are not grounds for rejection.NOTE 3The 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 masonry units. The time ofdelivery to the purchaser is FOB plant when the pur
19、chaser or purchasersagent transports the concrete masonry units, or at the time unloaded at theworksite if the manufacturer or manufacturers agent transports theconcrete masonry units.6.2 At the time of delivery to the purchaser, the total lineardrying shrinkage of units shall not exceed 0.065%.6.3
20、Solid UnitsThe net cross-sectional area of solid units,in every plane parallel to the bearing surface, shall be not lessthan 75 % of the gross cross-sectional area measured in thesame plane.7. Dimensions and Permissible Variations7.1 Minimum face shell thickness shall be not less than12in. (13 mm).7
21、.2 No overall dimension (width, height, and length) shalldiffer by more than 618 in. (3.2 mm) from the specifiedstandard dimensions.NOTE 4Standard dimensions of units are the manufacturers desig-nated dimensions. Nominal dimensions of modular size units are equal tothe standard dimensions plus the t
22、hickness of one mortar joint. Nominaldimensions of nonmodular size units usually exceed the standard dimen-sions by18 to14 in. (3.2 to 6.4 mm).8. Finish and Appearance8.1 No more than5%oftheunits in the shipment shallexhibit one or more of the characteristics described in 8.1.1through 8.1.4 and 8.2.
23、8.1.1 Units with dimensions not meeting the requirementsof 7.2.8.1.2 Units with finished face(s) containing chips larger than1 in. (25.4 mm) in any direction.8.1.3 Units with finished face(s) containing cracks widerthan 0.02 in. (0.5 mm) and longer than 25 % of the nominalheight of the unit.8.1.4 Un
24、its that are broken.NOTE 5Units specified to have particular features or finishes, such assplit-face and tumbled units, should not be evaluated for conformance ofsuch features to the requirements of 8.1.2.8.2 Where units are to be used in exposed wall construction,the face or faces that are to be ex
25、posed shall not show chips orcracks, except as permitted in 8.1.2 and 8.1.3, or otherimperfections when viewed from a distance of not less than 20ft (6.1 m) under diffused lighting.8.3 The color and texture of the units shall be specified bythe purchaser. The finished surfaces that will be exposed i
26、nplace shall conform to an approved sample consisting of notless than four units, representing the range of texture and colorpermitted.NOTE 6Concrete masonry units are produced using a wide variety ofnatural aggregates and other materials. As such, slight variations inherentfrom natural materials sh
27、ould be expected. Since specifying units andapproving samples can take place several months prior to production ofactual units for a project, slight variations in appearance from theapproved sample are to be expected.8.4 Nonloadbearing concrete masonry units shall be clearlymarked in a manner to pre
28、clude their use as load bearing units.9. Methods of Sampling and Testing9.1 The purchaser or authorized representative shall beaccorded proper facilities to inspect and sample the units at theplace of manufacture from the lots ready for delivery.9.2 Compressive strength, absorption, density, and dim
29、en-sional tolerances shall be based on tests of concrete masonryunits of any configuration or dimensions made with the samematerials, concrete mix design, manufacturing process, andcuring method, conducted in accordance with Test MethodsC140 and within 24 months of production of the units.9.3 Total
30、linear drying shrinkage shall be based on tests ofconcrete masonry units made with the same materials, concretemix design, manufacturing process, and curing method, con-ducted in accordance with Test Method C426 not more than 24months prior to delivery.10. Compliance10.1 If a sample fails to conform
31、 to the specifiedrequirements, 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 expenseof the manufacturer. If the second sample meet
32、s the specifiedrequirements, the remaining portion of the shipment repre-sented by the sample meets the specified requirements. If thesecond sample fails to meet the specified requirements, theremaining portion of the shipment represented by the samplefails to meet the specified requirements.NOTE 7U
33、nless otherwise specified in the purchase order, the cost ofTABLE 1 Density ClassificationARequirementsDensityClassificationOven-Dry Density of Concrete,lb/ft3(kg/m3) Average of 3 UnitsLightweight Less than 105 (1680)Medium Weight 105 to less than 125 (1680 to 2000)Normal Weight 125 (2000) or moreAC
34、onsult manufacturers for available densitiesTABLE 2 Strength RequirementsCompressive Strength(average net area)min, psi (MPa)Average of 3 units 600 (4.14)Individual unit 500 (3.45)C129 14a2tests is typically borne as follows: if the results of the tests show that theunits do not conform to the requi
35、rements of this specification, the cost istypically borne by the seller. If the results of the tests show that the unitsconform to the specification requirements, the cost is typically borne bythe purchaser.11. Keywords11.1 concrete masonry units; face shell; flange; linear dryingshrinkage; nonloadb
36、earingSUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue (C129 14)that may impact the use of this standard. (December 1, 2014.)(1) Revised Section 9 to add a 12-month frequency for C140tests.Committee C15 has identified the location
37、of selected changes to this standard since the last issue (C129 11)that may impact the use of this standard. (Approved July 1, 2014.)(1) Subsection 6.1 and Section 8 were revised.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item me
38、ntionedin 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 technical committe
39、e 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 at a meeti
40、ng 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 Drive, PO
41、 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 14a3
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