1、Designation: C1670 13C1670/C1670M 13aStandard Specification forAdhered Manufactured Stone Masonry Veneer (AMSMV)Units1This standard is issued under the fixed designation C1670;C1670/C1670M; the number immediately following the designation indicatesthe year of original adoption or, in the case of rev
2、ision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThe purpose of this standard is to establish the minimum product specifications for adheredmanufact
3、ured stone masonry veneer units. 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 requirements for adhered manufactured stone masonry veneer (AMSMV)units a
4、pplied as an adhered veneer to exterior and interior walls and structures suitable to receive AMSMV units.1.2 The property requirements of this specification apply at the time of delivery. This standard does not address the physicalevaluation of installed AMSMV units removed from service.1.3 The AMS
5、MV units described by this specification are manufactured from a mixture of cement, normal or lightweightaggregates (or a combination of both), water, admixtures, other cementitious materials and other components which are wet-castinto shapes simulating the appearance of natural stone and other text
6、ures.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given inparentheses are mathematical conversions to SI units that are provided for information only and are not considered stated in eachsystem may not be exact equivalents; theref
7、ore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.5 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotesshall not be considered as re
8、quirements of the standard.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations pri
9、or to use of AMSMV units.2. Referenced Documents2.1 ASTM Standards:C31/C31M Practice for Making and Curing Concrete Test Specimens in the FieldC33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cylindrical Concrete SpecimensC140 Test Methods for Sampling and Te
10、sting Concrete Masonry Units and Related UnitsC150 Specification for Portland CementC192/C192M Practice for Making and Curing Concrete Test Specimens in the LaboratoryC207 Specification for Hydrated Lime for Masonry PurposesC260 Specification for Air-Entraining Admixtures for ConcreteC330 Specificat
11、ion for Lightweight Aggregates for Structural ConcreteC331 Specification for Lightweight Aggregates for Concrete Masonry UnitsC426 Test Method for Linear Drying Shrinkage of Concrete Masonry Units1 This test method is under the jurisdiction ofASTM Committee C15 on Manufactured Masonry Units and is t
12、he direct responsibility of Subcommittee C15.03 on ConcreteMasonry Units and Related Units.Current edition approved June 15, 2013Dec. 15, 2013. Published August 2013January 2014. Originally approved in 2013. Last previous edition approved in 2013 as C1670 13. DOI: 10.1520/C16701310.1520/C167013A.Thi
13、s document is not an ASTM standard 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 editio
14、ns as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C482 Test Method for Bond Strength of Ceramic Tile
15、to Portland Cement PasteC494/C494M Specification for Chemical Admixtures for ConcreteC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteC666/C666M Test Method for Resistance of Concrete to Rapid Freezing and Tha
16、wingC979 Specification for Pigments for Integrally Colored ConcreteC989 Specification for Slag Cement for Use in Concrete and MortarsC1116/C1116M Specification for Fiber-Reinforced ConcreteC1157 Performance Specification for Hydraulic CementC1232 Terminology of MasonryC1240 Specification for Silica
17、Fume Used in Cementitious Mixtures3. Terminology3.1 Terminology defined in Terminology C1232 shall apply for this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 adhered manufactured stone masonry veneer (AMSMV) unit, na non-load bearing masonry unit that is produced bywet-cas
18、t blending of cementitious material, lightweight and other aggregates, pigments and admixtures, designed to be applied witha cementitious mortar to a backing surface.3.2.2 AMSMV Unit Profile, unit profile, nthe combination of AMSMV units that represent the range of shapes and sizesprovided in the sp
19、ecified veneer.3.2.3 average thickness, nthe mean of the depth measurement of the unit as measured from the back side to the face side.3.2.4 designated area, nthe area of a completed wall section that is used to verify compliance.3.2.5 saturated density, nthe water saturated weight of the cured spec
20、imen divided by the volume of the specimen.3.2.6 wet cast, adjmanufactured from a measurable slump concrete.4. Materials4.1 Cementitious materials shall conform to the following applicable specifications:4.1.1 Portland CementSpecification C150.4.1.2 Blended Hydraulic CementsSpecification C595.4.1.3
21、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 following specifications:4.2.1 Normal Weight AggregatesSpecification C33.
22、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 Other Constituents:4.7.1 Other constituent materials s
23、hall be shown by test of experience or history of performance under equivalent conditionsnot to be detrimental to the durability of the AMSMV unit, or AMSMV adhered manufactured stone masonry veneer unit, oradhered manufactured stone masonry veneer construction, or both.5. Sampling5.1 Concrete Mix f
24、or AMSMV UnitsFrom each manufacturing location, obtain representative samples from standardproduction of each concrete mix used for AMSMV units in accordance with 5.2.5.1.1 Sample and test the concrete mixes used forAMSMV units no more than twelve months prior to production of units. Morefrequent te
25、sting shall be required if there is any change in the manufacturing process including changes in cementitious materialsor their sources, aggregates or their sources, volume of water,water mix design, manufacturing process or curing. This does notinclude producing units of varying shapes, configurati
26、ons or sizes of units.5.2 Sample the concrete mix at the manufacturing facility from standard production mix in accordance with PracticeC31/C31M; with the following exceptions:C1670/C1670M 13a25.2.1 For compressive strength testing prepare five 4 in. diameter by 8 in. (100100 mm by 200 mm)mm cylinde
27、rs inaccordance with Practice C192/C192M and test in accordance with 6.1. Do not disturb the curing cylinders for a minimum of 48hours after casting. De-mold them at an age of seven days.5.2.2 For freeze/thaw durability testing, prepare five 3 in. by 3 in. by 11 in. 75 mm by 75 mm by 275 mm beams in
28、 accordancewith Section 7 of Practice C192/C192M.5.2.2.1 The molded beams shall be de-molded 24-32 hours after casting.5.2.2.2 The molded beams shall be air cured for 28 days.5.3 AMSMV UnitsFrom each manufacturing location, obtain a minimum of eight (8) samples totaling at least 5 ft2 (0.460.5m2) of
29、 AMSMV units that are representative of the AMSMV unit profile from which they are selected, using the samecementitious materials, aggregates, mix design, manufacturing process and curing.5.3.1 Sampling and testing should be performed at least annually to meet the requirements of this standard.6. Ph
30、ysical Properties and Testing Requirements of AMSMV Unit Concrete Mix6.1 Compressive Strength:6.1.1 Test specimens at an age of 28 days in accordance with Test Method C39/C39M.6.1.1.1 The average compressive strength of five specimens shall be a minimum of 2100 psi (15 MPa)15 MPa with noindividual s
31、pecimen having a measured compressive strength less than 1800 psi (12 MPa). 12 MPa.6.2 Resistance to Freezing and Thawing:6.2.1 No single specimen in a group of five specimens shall exhibit a mass loss greater than 1.5 % or show any fracturecompletely through the cross section when tested in accorda
32、nce with Test Method C666/C666M, Procedure A, with the followingmodifications:6.2.1.1 The molded beams are subjected to 50 consecutive cycles of freezing and thawing.6.2.2 Determine mass loss in accordance with the following procedure:6.2.2.1 Following immersion in water for a period of 48 hours, th
33、e initial specimen mass shall be measured. Excess surfacewater shall be immediately removed by blotting with damp cloth or fabric towel prior to mass measurement;6.2.2.2 Following the completion of 50 freeze thaw cycles in accordance with Test Method C666/C666MProcedure A, thespecimens shall be remo
34、ved from the containers and excess surface water shall be removed by blotting with damp cloth or fabrictowel;6.2.2.3 The Percent Mass Loss (PWL) for each specimen shall be determined at 50 cycles and be calculated as follows:PWL beam!, %5M0 2 M1!M0#3100where:PWL (beam) = percent mass loss of beamM0
35、= initial mass of beam following 48 hour saturationM1 = final mass of beam following 50 freeze/thaw cycles6.2.2.4 Any test specimen which fractures completely through the cross section into two or more discrete sections shall berecorded as a failure.6.2.3 In the case of specimen failure under 6.2.2.
36、4, the failure mode must be reported in detail.NOTE 1Freeze-thaw testing is conducted on prism samples cast from representative concrete mix designs. While each manufacturer takes precautionsto ensure that the surface color is durable, this freeze-thaw testing does not include a colored prism sample
37、.7. Physical Properties and Testing Requirements of AMSMV Units7.1 Dimensions:7.1.1 AMSMV units Units shall have a minimum thickness of 14 in. (6 mm)6 mm except those parts of a unit within 0.5 in.(13 mm)13 mm of the unit perimeter.7.1.2 The average thickness2 of each AMSMV unit shall be less than o
38、r equal to 2 58 in. (67 mm). 67 mm.7.1.3 AMSMV units Units shall not exceed 36 in. (914 mm)915 mm in any face dimension and shall not exceed more than5 ft2 (0.460.5 m2) in total face area.7.2 Shear Bond Strength:7.2.1 Each unit tested shall develop a shear bond strength with the mortar substrate of
39、not less than 50 psi (350 kPa)350 kPawhen tested in accordance with Test Method C482 with the following modifications (listed in 7.2.1.1 through 7.2.1.5):7.2.1.1 Test a minimum of five (5) AMSMV units at a minimum age of 28 days after manufacture.7.2.1.2 Use the mortar substrate for non-vitreous til
40、e (water absorption greater than 7 %).7.2.1.3 Use an AMSMV a unit that can be cut into a sample with minimum dimensions of 2 14 in. by 2 14 in. (5760 mm by57 mm)60 mm and maximum dimensions of 4 in. by 4 in. (100100 mm by 100 mm),mm, with a thickness no greater than 258 in. (70 mm).70 mm. This sampl
41、e is to be cut containing the back pattern of the unit throughout the entire back face.2 Annex A1 contains one method for determining average thickness.C1670/C1670M 13a37.2.1.4 Use a 12 in. (12 mm)13 mm by 12 in. (12 mm)13 mm steel bar (in place of the key) whose length shall be sufficientto reach t
42、he outer edges of the sample unit across its length. The steel bar shall be placed adjacent and parallel to the sample mortarinterface.7.2.1.5 Evaluate shear bond results of actual bonding surface of AMSMV unit as manufactured. If the back surface of theAMSMV unit used for testing has a directional
43、back pattern, this back pattern shall be parallel to the direction of loading.7.3 Absorption:7.3.1 At a minimum age of 28 days after manufacture, average absorption of three units shall be tested in accordance with TestMethods C140. For the purposes of consistency, the results for any one unit shall
44、 not vary by more than 10 % from the averagefor all units. AMSMV units Units shall be permitted to be cut with a saw if the testing facility cannot accommodate a full-sizedunit.7.4 Density:7.4.1 The saturated density of the AMSMV units shall be determined from the weights obtained during absorption
45、testing (inaccordance with Test Methods C140 and 7.3.1) using the following calculation:Saturated Density, lb/ft3,Ws!Ws 2 Wi! 362.4Saturated Density, lb/ft3,Ws!Ws 2 Wi! 362.4for inch-pound unitsSaturated Density, kg/m3,Ws!Ws 2 Wi! 31000for SI unitswhere:Ws = saturated weight of specimen, lb kgWi = i
46、mmersed weight of specimen, lb kg7.4.2 The weight per square foot of the AMSMV unit shall be determined by multiplying the saturated density of the unit bythe average thickness, and shall not exceed 15 lb/ft2. 73 kg/m2.7.5 Linear Drying Shrinkage:7.5.1 At the time of delivery to the purchaser, the l
47、inear shrinkage of the specimen sample shall not exceed 0.065 % when testedin accordance with Test Method C426.8. Finish and Appearance8.1 The finish and appearance requirements shall apply to units at the time of delivery to the jobsite and acceptance by thepurchaser.8.2 Units shall not show defect
48、s, deficiencies or protrusions on any surface that interfere with installation or significantly impairthe performance of the construction.8.3 Unit profile names, color range and textures of the units shall be specified by the purchaser. The finished faces shall conformto approved samples representin
49、g the range of textures and colors selected.NOTE 2An approved sample typically consists of manufacturers samples, individual units, or field mock-ups when specified.8.4 Finished faces shall not have any chips with a dimension exceeding 0.75 in. (19 mm)20 mm or an aggregate length of chipsthat exceed 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 from the appearanceof th
