1、Designation: C1670 13Standard Specification forAdhered Manufactured Stone Masonry Veneer (AMSMV)Units1This standard is issued under the fixed designation C1670; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThe purpose of this standard is to establish the minimum product specifications for adheredmanufactured stone masonry veneer uni
3、ts. These units are manufactured using a wet cast concretemixture and finished to simulate stone, rocks found in nature, and other textures.1. Scope1.1 This specification covers the minimum product require-ments for adhered manufactured stone masonry veneer(AMSMV) units applied as an adhered veneer
4、to exterior andinterior walls and structures suitable to receive AMSMV units.1.2 The property requirements of this specification apply atthe time of delivery. This standard does not address thephysical evaluation of installed AMSMV units removed fromservice.1.3 The AMSMV units described by this spec
5、ification aremanufactured from a mixture of cement, normal or lightweightaggregates (or a combination of both), water, admixtures, othercementitious materials and other components which are wet-cast into shapes simulating the appearance of natural stone andother textures.1.4 The values stated in inc
6、h-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.1.5 The text of this specification references notes andfootnotes which provide explanatory material. These notes
7、andfootnotes shall not be considered as requirements of thestandard.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the a
8、pplica-bility of regulatory limitations prior to use of AMSMV units.2. Referenced Documents2.1 ASTM Standards:C31/C31M Practice for Making and Curing Concrete TestSpecimens in the FieldC33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cylin-drical Concrete Spe
9、cimensC140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC150 Specification for Portland CementC192/C192M Practice for Making and Curing Concrete TestSpecimens in the LaboratoryC207 Specification for Hydrated Lime for Masonry Pur-posesC260 Specification for Air-Entrain
10、ing Admixtures for Con-creteC330 Specification for Lightweight Aggregates for Struc-tural ConcreteC331 Specification for LightweightAggregates for ConcreteMasonry UnitsC426 Test Method for Linear Drying Shrinkage of ConcreteMasonry UnitsC482 Test Method for Bond Strength of Ceramic Tile toPortland C
11、ement PasteC494/C494M Specification for Chemical Admixtures forConcreteC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC666/C666M Test Method for Resistance of Concrete toRapid Freezing and ThawingC979 Specifi
12、cation for Pigments for Integrally Colored Con-creteC989 Specification for Slag Cement for Use in Concrete andMortarsC1116/C1116M Specification for Fiber-Reinforced Concrete1This test method is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility
13、 of SubcommitteeC15.03 on Concrete Masonry Units and Related Units.Current edition approved June 15, 2013. Published August 2013. DOI: 10.1520/C167013Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C1157 Performance Specification for
14、Hydraulic CementC1232 Terminology of MasonryC1240 Specification for Silica Fume Used in CementitiousMixtures3. Terminology3.1 Terminology defined in Terminology C1232 shall applyfor this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 adhered manufactured stone masonry veneer(
15、AMSMV) unit, na non-load bearing masonry unit that isproduced by wet-cast blending of cementitious material, light-weight and other aggregates, pigments and admixtures, de-signed to be applied with a cementitious mortar to a backingsurface.3.2.2 AMSMV Unit Profile, nthe combination ofAMSMVunits that
16、 represent the range of shapes and sizes provided inthe specified veneer.3.2.3 average thickness, nthe mean of the depth measure-ment of the unit as measured from the back side to the faceside.3.2.4 designated area, nthe area of a completed wallsection that is used to verify compliance.3.2.5 saturat
17、ed density, nthe water saturated weight of thecured specimen divided by the volume of the specimen.3.2.6 wet cast, adjmanufactured from a measurable slumpconcrete.4. Materials4.1 Cementitious materials shall conform to the followingapplicable specifications:4.1.1 Portland CementSpecification C150.4.
18、1.2 Blended Hydraulic CementsSpecification C595.4.1.3 PozzolansSpecification C618.4.1.4 Slag CementSpecification C989.4.1.5 Hydraulic CementSpecification C1157.4.1.6 Silica FumeSpecification C1240.4.1.7 Hydrated LimeSpecification C207.4.2 AggregatesAggregates shall conform to the followingspecificat
19、ions:4.2.1 Normal Weight AggregatesSpecification C33.4.2.2 Lightweight AggregatesSpecification C330 or C331.4.3 Air-Entraining AdmixturesSpecification C260.4.4 Concrete AdmixturesSpecification C494/C494M.4.5 Coloring PigmentsSpecification C979.4.6 Reinforcement FibersSpecification C1116/C1116M.4.7 O
20、ther Constituents:4.7.1 Other constituent materials shall be shown by test ofexperience or history of performance under equivalent condi-tions not to be detrimental to the durability of the AMSMVunit, or AMSMV construction, or both.5. Sampling5.1 Concrete Mix for AMSMV UnitsFrom each manufac-turing
21、location, obtain representative samples from standardproduction of each concrete mix used for AMSMV units inaccordance with 5.2.5.1.1 Sample and test the concrete mixes used for AMSMVunits no more than twelve months prior to production of units.More frequent testing shall be required if there is any
22、 changein the manufacturing process including changes in cementi-tious materials or their sources, aggregates or their sources,volume of water, mix design, manufacturing process or curing.This does not include producing units of varying shapes,configurations or sizes of units.5.2 Sample the concrete
23、 mix at the manufacturing facilityfrom standard production mix in accordance with PracticeC31/C31M; with the following exceptions:5.2.1 For compressive strength testing prepare five 4 in.diameter by 8 in. (100 mm by 200 mm) cylinders in accordancewith Practice C192/C192M and test in accordance with
24、6.1.Donot disturb the curing cylinders for a minimum of 48 hoursafter casting. De-mold them at an age of seven days.5.2.2 For freeze/thaw durability testing, prepare five 3 in. by3 in. by 11 in. beams in accordance with Section 7 of PracticeC192/C192M.5.2.2.1 The molded beams shall be de-molded 24-3
25、2 hoursafter casting.5.2.2.2 The molded beams shall be air cured for 28 days.5.3 AMSMV UnitsFrom each manufacturing location, ob-tain a minimum of eight (8) samples totaling at least 5 ft2(0.46m2) of AMSMV units that are representative of the AMSMVunit profile from which they are selected, using the
26、 samecementitious materials, aggregates, mix design, manufacturingprocess and curing.5.3.1 Sampling and testing should be performed at leastannually to meet the requirements of this standard.6. Physical Properties and Testing Requirements ofAMSMV Unit Concrete Mix6.1 Compressive Strength:6.1.1 Test
27、specimens at an age of 28 days in accordancewith Test Method C39/C39M.6.1.1.1 The average compressive strength of five specimensshall be a minimum of 2100 psi (15 MPa) with no individualspecimen having a measured compressive strength less than1800 psi (12 MPa).6.2 Resistance to Freezing and Thawing:
28、6.2.1 No single specimen in a group of five specimens shallexhibit a mass loss greater than 1.5 % or show any fracturecompletely through the cross section when tested in accordancewith Test Method C666/C666M, ProcedureA, with the follow-ing modifications:6.2.1.1 The molded beams are subjected to 50
29、consecutivecycles of freezing and thawing.6.2.2 Determine mass loss in accordance with the followingprocedure:6.2.2.1 Following immersion in water for a period of 48hours, the initial specimen mass shall be measured. ExcessC1670 132surface water shall be immediately removed by blotting withdamp clot
30、h or fabric towel prior to mass measurement;6.2.2.2 Following the completion of 50 freeze thaw cyclesin accordance with Test Method C666/C666MProcedure A,the specimens shall be removed from the containers and excesssurface water shall be removed by blotting with damp cloth orfabric towel;6.2.2.3 The
31、 Percent Mass Loss (PWL) for each specimenshall be determined at 50 cycles and be calculated as follows:PWL beam!,%5 M02 M1!M0# 3100where:PWL (beam) = percent mass loss of beamM0= initial mass of beam following 48 hoursaturationM1= final mass of beam following 50 freeze/thawcycles6.2.2.4 Any test sp
32、ecimen which fractures completelythrough the cross section into two or more discrete sectionsshall be recorded as a failure.6.2.3 In the case of specimen failure under 6.2.2.4, thefailure mode must be reported in detail.NOTE 1Freeze-thaw testing is conducted on prism samples cast fromrepresentative
33、concrete mix designs. While each manufacturer takesprecautions to ensure that the surface color is durable, this freeze-thawtesting does not include a colored prism sample.7. Physical Properties and Testing Requirements ofAMSMV Units7.1 Dimensions:7.1.1 AMSMV units shall have a minimum thickness of1
34、4in. (6 mm) except those parts of a unit within 0.5 in. (13 mm)of the unit perimeter.7.1.2 The average thickness2of each AMSMV unit shall beless than or equal to 258 in. (67 mm).7.1.3 AMSMV units shall not exceed 36 in. (914 mm) inany face dimension and shall not exceed more than 5 ft2(0.46m2) in to
35、tal face area.7.2 Shear Bond Strength:7.2.1 Each unit tested shall develop a shear bond strengthwith the mortar substrate of not less than 50 psi (350 kPa) whentested in accordance with Test Method C482 with the followingmodifications (listed in 7.2.1.1 through 7.2.1.5):7.2.1.1 Test a minimum of fiv
36、e (5) AMSMV units at aminimum age of 28 days after manufacture.7.2.1.2 Use the mortar substrate for non-vitreous tile (waterabsorption greater than 7 %).7.2.1.3 Use an AMSMV unit that can be cut into a samplewith minimum dimensions of 214 in. by 214 in. (57 mm by 57mm) and maximum dimensions of 4 in
37、. by 4 in. (100 mm by100 mm), with a thickness no greater than 258 in. (70 mm).This sample is to be cut containing the back pattern of the unitthroughout the entire back face.7.2.1.4 Use a12 in. (12 mm) by12 in. (12 mm) steel bar (inplace of the key) whose length shall be sufficient to reach theoute
38、r edges of the sample unit across its length. The steel barshall be placed adjacent and parallel to the sample mortarinterface.7.2.1.5 Evaluate shear bond results of actual bonding sur-face of AMSMV unit as manufactured. If the back surface ofthe AMSMV unit used for testing has a directional backpat
39、tern, this back pattern shall be parallel to the direction ofloading.7.3 Absorption:7.3.1 At a minimum age of 28 days after manufacture,average absorption of three units shall be tested in accordancewith Test Methods C140. For the purposes of consistency, theresults for any one unit shall not vary b
40、y more than 10 % fromthe average for all units.AMSMV units shall be permitted to becut with a saw if the testing facility cannot accommodate afull-sized unit.7.4 Density:7.4.1 The saturated density of the AMSMV units shall bedetermined from the weights obtained during absorption test-ing (in accorda
41、nce with Test Methods C140 and 7.3.1) usingthe following calculation:Saturated Density, lb/ft3,Ws!Ws2 Wi! 362.4where:Ws= saturated weight of specimen, lbWi= immersed weight of specimen, lb7.4.2 The weight per square foot of the AMSMV unit shallbe determined by multiplying the saturated density of th
42、e unitby the average thickness, and shall not exceed 15 lb/ft2.7.5 Linear Drying Shrinkage:7.5.1 At the time of delivery to the purchaser, the linearshrinkage of the specimen sample shall not exceed 0.065 %when tested in accordance with Test Method C426.8. Finish and Appearance8.1 The finish and app
43、earance requirements shall apply tounits at the time of delivery to the jobsite and acceptance by thepurchaser.8.2 Units shall not show defects, deficiencies or protrusionson any surface that interfere with installation or significantlyimpair the performance of the construction.8.3 Unit profile name
44、s, color range and textures of the unitsshall be specified by the purchaser. The finished faces shallconform to approved samples representing the range of tex-tures and colors selected.NOTE 2An approved sample typically consists of manufacturerssamples, individual units, or field mock-ups when speci
45、fied.8.4 Finished faces shall not have any chips with a dimensionexceeding 0.75 in. (19 mm) or an aggregate length of chips thatexceed 10 % of the perimeter of the finished face of the unit.8.5 Finished faces of the unit shall not contain cracks,crazing, scuffing, or other imperfections that detract
46、 from theappearance of the designated area when viewed from a distanceof 20 ft (6 m) under diffused lighting.2Annex A1 contains one method for determining average thickness.C1670 1338.6 A shipment shall not contain more than5%ofunits,including broken units, that do not meet the requirements of8.2, 8
47、.3, 8.4, and 8.5.NOTE 3Many broken units are usable during installation. AMSMVunits are commonly broken or saw-cut by the installer to fit into particularareas of the construction.9. Product Identification and Packaging9.1 Each package shall identify the manufacturers name,profile name, location of
48、manufacture, minimum quantitycontained, and statement of product conformity to this speci-fication.10. Reporting10.1 A complete report with testing completed withintwelve (12) months of manufacture of units, consisting of thefollowing shall be made available upon request:10.1.1 Sampling information.
49、10.1.2 Date, time, and name of individual molding orselecting specimens for test or both.10.1.3 Density as determined in 7.4.10.1.4 The weight per sq. ft. ofAMSMV unit as determinedin 7.4.10.1.5 The maximum compressive load imposed on eachsample along with the compressive strength in pounds persquare inch as determined in 6.1.10.1.6 The maximum load and shear bond strength asdetermined in 7.2.10.1.6.1 Dimensions (maximum and minimum values), in-cluding average thickness of the test sample.10.1.6.2 The location of failure of each specimen;
