1、Designation: C129 14aC129 17Standard 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 numb
2、er in parentheses 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 nonloadbe
3、aring concrete masonry units made from portland cement, water, andmineral aggregates with or without the inclusion of other materials. These units are intended for use in nonloadbearing partitions,but under certain conditions they may be suitable for use in nonloadbearing exterior walls above grade
4、where effectively protectedfrom the weather.1.2 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be considered as requirements of the standard.1.3 The values stated in inch-pound uni
5、ts are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.NOTE 1Concrete masonry units covered by this specification are made from lightweight or normal weight aggregates, or both.
6、NOTE 2When particular features are desired, such as density classification, surface texture for appearance or bond, finish, color, fire resistance,insulation, acoustical properties, or other special features, such properties should be specified separately by the purchaser. However, suppliers should
7、beconsulted as to the availability of units having the desired features.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recomm
8、endations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC90 Specification for Loadbearing Concrete Masonry UnitsC140 Test Methods for Sampling and Testing Concrete Masonry Units an
9、d Related UnitsC150 Specification for Portland CementC207 Specification for Hydrated Lime for Masonry PurposesC331 Specification for Lightweight Aggregates for Concrete Masonry UnitsC426 Test Method for Linear Drying Shrinkage of Concrete Masonry UnitsC595 Specification for Blended Hydraulic Cements
10、C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteC989 Specification for Slag Cement for Use in Concrete and MortarsC1157 Performance Specification for Hydraulic CementC1232 Terminology of Masonry3. Terminology3.1 Terminology defined in Terminology C1232 sha
11、ll apply for this specification.4. Classification4.1 Nonloadbearing concrete masonry units manufactured in accordance with this specification shall conform to one of threedensity classifications prescribed in Table 1.1 This specification is under the jurisdiction of ASTM Committee C15 on Manufacture
12、d Masonry Units and is the direct responsibility of Subcommittee C15.03 onConcrete Masonry Units and Related Units.Current edition approved Dec. 1, 2014June 1, 2017. Published January 2015July 2017. Originally approved in 1937. Last previous edition approved in 2014 as C129 14.14a. DOI: 10.1520/C012
13、9-14A.10.1520/C0129-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard
14、and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases onl
15、y the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15. Materials and Manu
16、facture5.1 Cementitious MaterialsMaterials shall conform to the following applicable specifications:5.1.1 Portland CementSpecification C150.5.1.2 Blended Hydraulic CementsSpecification C595.5.1.3 Hydraulic CementSpecification C1157.5.1.4 Hydrated Lime, Type SSpecification C207.5.1.5 Ground Granulate
17、d Blast Furnace SlagSpecification C989.5.1.6 PozzolansSpecification C618.5.2 AggregatesAggregates shall conform to the following ASTM specifications, except that grading requirements shall notnecessarily apply:5.2.1 Normal Weight AggregatesSpecification C33.5.2.2 Lightweight AggregatesSpecification
18、C331.5.3 Other ConstituentsAir-entraining agents, coloring pigments, integral water repellents, finely ground silica, and otherconstituents, shall be previously established as suitable for use in concrete masonry and shall conform to applicable ASTMstandards or shall be shown by test or experience n
19、ot to be detrimental to the durability of the concrete masonry units or anymaterial customarily used in masonry construction.6. Physical Requirements6.1 At the time of delivery to the purchaser, units shall conform to the strength requirements prescribed in Table 2. All unitsshall be sound and free
20、of cracks or other defects that interfere with the proper placement of the units or significantly impair thestrength or permanence of the construction. Minor cracks incidental to the usual method of manufacture or minor chippingresulting from customary methods of handling in shipment and delivery ar
21、e not grounds for rejection.NOTE 3The purchaser is the public body or authority, association, corporation, partnership, or individual entering into a contract or agreement topurchase or install, or both, concrete masonry units. The time of delivery to the purchaser is FOB plant when the purchaser or
22、 purchasers agent transportsthe concrete masonry units, or at the time unloaded at the worksite if the manufacturer or manufacturers agent transports the concrete masonry units.6.2 At the time of delivery to the purchaser, the total linear drying shrinkage of units shall not exceed 0.065%.6.3 Solid
23、UnitsThe net cross-sectional area of solid units, in every plane parallel to the bearing surface, shall be not less than75 % of the gross cross-sectional area measured in the same plane.7. Dimensions and Permissible Variations7.1 Minimum face shell thickness shall be not less than 12 in. (13 mm).7.2
24、 No overall dimension (width, height, and length) shall differ by more than 618 in. (3.2 mm) from the specified standarddimensions.NOTE 4Standard dimensions of units are the manufacturers designated dimensions. Nominal dimensions of modular size units are equal to thestandard dimensions plus the thi
25、ckness of one mortar joint. Nominal dimensions of nonmodular size units usually exceed the standard dimensions by 18to 14 in. (3.2 to 6.4 mm).8. Finish and Appearance8.1 No more than 5 % of the units in the shipment shall exhibit one or more of the characteristics described in 8.1.1 through8.1.4 and
26、 8.2.8.1.1 Units with dimensions not meeting the requirements of 7.2.8.1.2 Units with finished face(s) containing chips larger than 1 in. (25.4 mm) in any direction.TABLE 1 Density ClassificationA RequirementsDensityClassificationOven-Dry Density of Concrete,lb/ft3 (kg/m3) Average of 3 UnitsLightwei
27、ght Less than 105 (1680)Medium Weight 105 to less than 125 (1680 to 2000)Normal Weight 125 (2000) or moreAConsult 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 1728.1.3
28、 Units with finished face(s) containing cracks wider than 0.02 in. (0.5 mm) and longer than 25 % of the nominal heightof the unit.8.1.4 Units that are broken.NOTE 5Units specified to have particular features or finishes, such as split-face and tumbled units, should not be evaluated for conformance o
29、f suchfeatures 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 exposed shall not show chips orcracks, except as permitted in 8.1.2 and 8.1.3, or other imperfections when viewed from a distance of not less than 20 ft (6.1 m)un
30、der diffused lighting.8.3 The color and texture of the units shall be specified by the purchaser. The finished surfaces that will be exposed in placeshall conform to an approved sample consisting of not less than four units, representing the range of texture and color permitted.NOTE 6Concrete masonr
31、y units are produced using a wide variety of natural aggregates and other materials. As such, slight variations inherent fromnatural materials should be expected. Since specifying units and approving samples can take place several months prior to production of actual units fora project, slight varia
32、tions in appearance from the approved sample are to be expected.8.4 Nonloadbearing concrete masonry units shall be clearly marked in a manner to preclude their use as load bearing units.Labeling is not necessary if units also comply with all requirements of Specification C90.9. Methods of Sampling a
33、nd Testing9.1 The purchaser or authorized representative shall be accorded proper facilities to inspect and sample the units at the placeof manufacture from the lots ready for delivery.9.2 Compressive strength, absorption, density, and dimensional tolerances shall be based on tests of concrete mason
34、ry units ofany configuration or dimensions made with the same materials, concrete mix design, manufacturing process, and curing method,conducted in accordance with Test Methods C140 and within 24 months of production of the units.not more than 12 months priorto delivery.9.3 Total linear drying shrin
35、kage shall be based on tests of concrete masonry units made with the same materials, concrete mixdesign, manufacturing process, and curing method, conducted in accordance with Test Method C426 and not more than 24 monthsprior to delivery.10. Compliance10.1 If a sample fails to conform to the specifi
36、ed requirements, the manufacturer shall be permitted to remove units from theshipment. A new sample shall be selected by the purchaser from remaining units from the shipment with a similar configurationand dimension and tested at the expense of the manufacturer. If the second sample meets the specif
37、ied requirements, the remainingportion of the shipment represented by the sample meets the specified requirements. If the second sample fails to meet the specifiedrequirements, the remaining portion of the shipment represented by the sample fails to meet the specified requirements.NOTE 7Unless other
38、wise specified in the purchase order, the cost of tests is typically borne as follows: if the results of the tests show that the unitsdo not conform to the requirements of this specification, the cost is typically borne by the seller. If the results of the tests show that the units conformto the spe
39、cification requirements, the cost is typically borne by the purchaser.11. Keywords11.1 concrete masonry units; face shell; flange; linear drying shrinkage; nonloadbearingSUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C129 14C129
40、14a) that may impact the use of this standard. (December(June 1, 2014.)2017)(1) Modified 8.4 to exempt units complying with Specification C90 from C129 labeling requirements.(2) Revised Section Modified Section testing frequency in 9 to add a 12-month frequency for C140 tests.be based on time ofdeli
41、very.Committee C15 has identified the location 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.C129 173ASTM International takes no position respecting the validity of an
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43、ision at any time by the responsible technical 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
44、comments will receive careful consideration 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 copyri
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