1、Designation: C1670/C1670M 13aC1670/C1670M 14Standard Specification forAdhered Manufactured Stone Masonry Veneer Units1This standard is issued under the fixed designation C1670/C1670M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision,
2、 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 adheredmanufactured s
3、tone 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. Scope Scope*1.1 This specification covers the minimum product requirements for adhered manufactured stone masonry veneer units applied
4、as an adhered veneer to exterior and interior walls and structures suitable to receive units.1.2 The property requirements of this specification apply at the time of delivery. This standard does not address the physicalevaluation of installed units removed from service.1.3 The units described by thi
5、s specification are manufactured from a mixture of cement, normal or lightweight aggregates (ora combination of both), water, admixtures, other cementitious materials and other components which are wet-cast into shapessimulating the appearance of natural stone and other textures.1.4 The values state
6、d in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.5
7、The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotesshall not be considered as requirements 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 resp
8、onsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use of units.NOTE 1When particular features are desired such as surface textures or color these features should be specified separately. Suppl
9、iers should beconsulted as to the availability of units having the desired features.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 Cylindri
10、cal Concrete SpecimensC140 Test Methods for Sampling and Testing 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 Specificatio
11、n for Air-Entraining Admixtures for ConcreteC330 Specification 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
12、ofASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.03 on ConcreteMasonry Units and Related Units.Current edition approved Dec. 15, 2013Aug. 1, 2014. Published January 2014September 2014. Originally approved in 2013. Last previous edition approved
13、in 2013 asC1670C1670/C1670M 13a. 13. DOI: 10.1520/C167013A.10.1520/C1670_C1670M14.This 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 adeq
14、uately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only 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
15、International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1C482 Test Method for Bond Strength of Ceramic Tile to Portland Cement PasteC494/C494M Specification for Chemical Admixtures for ConcreteC595 Specification for Blended Hydraulic CementsC618 Specificatio
16、n 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 ThawingC979 Specification for Pigments for Integrally Colored ConcreteC989 Specification for Slag Cement for Use in Concrete and MortarsC1116/C1116M Spec
17、ification for Fiber-Reinforced ConcreteC1157 Performance Specification for Hydraulic CementC1232 Terminology of MasonryC1240 Specification for Silica Fume Used in Cementitious Mixtures3. Terminology3.1 Terminology defined in Terminology C1232 shall apply for this specification.3.2 Definitions of Ter
18、ms Specific to This Standard:3.2.1 adhered manufactured stone masonry veneer unit, na non-load bearing masonry unit that is produced by wet-castblending of cementitious material, lightweight and other aggregates, pigments and admixtures, designed to be applied with acementitious mortar to a backing
19、surface.3.2.2 unit profile, nthe combination of units that represent the range of shapes and sizes provided in the specified 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
20、wall section that is used to verify compliance.3.2.5 saturated density, nthe water saturated weight of the cured specimen 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 appli
21、cable specifications:4.1.1 Portland CementSpecification C150.4.1.2 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.
22、2 AggregatesAggregates shall conform to the following specifications: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 PigmentsSpecificati
23、on C979.4.6 Reinforcement FibersSpecification C1116/C1116M.4.7 Other Constituents:4.7.1 Other constituent materials shall be shown by test of experience or history of performance under equivalent conditionsnot to be detrimental to the durability of the adhered manufactured stone masonry veneer unit,
24、 or adhered manufactured stonemasonry veneer construction, or both.5. Sampling5.1 Concrete Mix for UnitsFrom each manufacturing location, obtain representative samples from standard production of eachconcrete mix used for units in accordance with 5.2.5.1.1 Sample and test the concrete mixes used for
25、 units no more than twelve months prior to production of units. More frequenttesting shall be required if there is any change in the manufacturing process including changes in cementitious materials or theirsources, aggregates or their sources, volume of water mix design, manufacturing process or cu
26、ring.This does not include producingunits of varying shapes, configurations 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 1425.2.1 For compressive strength testi
27、ng prepare five 4 in. diameter by 8 in. 100 mm by 200 mm cylinders in accordance withPractice C192/C192M and test in accordance with 6.1. Do not disturb the curing cylinders for a minimum of 48 hours after casting.De-mold them at an age of seven days.5.2.2 For freeze/thaw durability testing, prepare
28、 five 3 in. by 3 in. by 11 in. 75 mm by 75 mm by 275 mm beams in 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 UnitsFrom each manufacturing location, obtain a minimum o
29、f eight (8) samples totaling at least 5 ft2 0.5 m2 of unitsthat are representative of the unit profile from which they are selected, using the same cementitious materials, aggregates, mixdesign, manufacturing process and curing.5.3.1 Sampling and testing should be performed at least annually to meet
30、 the requirements of this standard.5. Compressive Strength5.1 From each manufacturing location, obtain representative samples from standard production of each concrete mix used forunits in accordance with 5.2.5.1.1 Sample and test the concrete mixes used for units no more than twelve months prior to
31、 production of units. More frequenttesting shall be required if there is any change in the manufacturing process including changes in cementitious materials or theirsources, aggregates or their sources, water-cementitious materials ratio, mix design, manufacturing process or curing. This doesnot inc
32、lude producing units of varying shapes, configurations or sizes of units.5.2 Sample the concrete mix at the manufacturing facility from standard production mix. Form compressive strength andabsorption specimens in accordance with Practice C31/C31M; except that the time requirements for transportatio
33、n do not applywhen specimens are shipped to the testing laboratory.5.2.1 For compressive strength testing, prepare five 4-in. diameter by 8 in. 100 mm by 200 mm cylinders and test inaccordance with 5.3. Do not disturb the curing cylinders for a minimum of 48 hours after casting. De-mold them at an a
34、ge of sevendays.5.3 Test specimens at an age of 28 days in accordance with Test Method C39/C39M.5.4 The average compressive strength of five specimens shall be a minimum of 2100 psi 15 MPa with no individual specimenhaving a measured compressive strength less than 1800 psi 12 MPa.6. Physical Propert
35、ies and Testing Requirements of Unit Concrete MixFreeze-Thaw Durability6.1 Compressive Strength: From each manufacturing location, obtain representative samples from standard production of eachconcrete mix used for units in accordance with 6.2.6.1.1 Test specimens at an age of 28 days in accordance
36、with Test MethodSample and test the concrete mixes used for unitsno more than twelve months prior to production of units. More frequent testing shall be required if there is any change in themanufacturing process including C39/C39M.changes in cementitious materials or their sources, aggregates or th
37、eir sources,water-cementitious materials ratio, mix design, manufacturing process or curing. This does not include producing units of varyingshapes, configurations or sizes of units.6.1.1.1 The average compressive strength of five specimens shall be a minimum of 2100 psi 15 MPa with no individualspe
38、cimen having a measured compressive strength less than 1800 psi 12 MPa.6.2 Sample the concrete mix at the manufacturing facility from standard production mix in accordance with Practice C31/C31Mexcept that the time requirements for transportation do not apply when specimens are shipped to the testin
39、g laboratory.6.2.1 For freeze/thaw durability testing, prepare five 3 in. by 3 in. by 11 in. 75 mm by 75 mm by 275 mm beams. The moldedbeams shall be de-molded 2432 hours after casting and shall be air cured for 28 days.6.3 Resistance to Freezing and Thawing: Testing Requirements:6.3.1 No single spe
40、cimen 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 accordance with Test Method C666/C666M, Procedure A, with the followingmodifications:6.3.1.1 The molded beams are subjected to 50 consecutive cycles
41、 of freezing and thawing.6.3.2 Determine mass loss in accordance with the following procedure:6.3.2.1 Following immersion in water for a period of 48 hours, the initial specimen mass shall be measured. Excess surfacewater shall be immediately removed by blotting with damp cloth or fabric towel prior
42、 to mass measurement;6.3.2.2 Following the completion of 50 freeze thaw cycles in accordance with Test Method C666/C666MProcedure ,ProcedureA, the specimens shall be removed from the containers and excess surface water shall be removed by blotting with dampcloth or fabric towel;6.3.2.3 The Percent M
43、ass Loss (PWL) for each specimen shall be determined at 50 cycles and be calculated as follows:PWL beam!, %5M0 2 M1!M0#3100C1670/C1670M 143where:where:PWL (beam) = percent mass loss of beamM0 = initial mass of beam following 48 hour saturationM0 = initial mass of beam following 48-hour saturationM1
44、= final mass of beam following 50 freeze/thaw cycles6.3.2.4 Any test specimen which fractures completely through the cross section into two or more discrete sections shall berecorded as a failure.6.3.3 In the case of specimen failure under 6.2.2.46.3.2.4, the failure mode must be reported in detail.
45、NOTE 2Freeze-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.NOTE 1Freeze-thaw testing is conducted on pris
46、m 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.7. Physical Properties and Testing Requirements of UnitsShear Bond7.1 Dimensions: From each
47、manufacturing location, obtain a minimum of five (5) samples of units that are representative ofthe unit profile from which they are selected, using the same cementitious materials, aggregates, mix design, manufacturing processand curing.7.1.1 Units shall have a minimum thickness of 14 in. 6 mm exce
48、pt those parts of a unit within 0.5 in. 13 mm of the unitperimeter.7.1.2 The average thickness2 of each unit shall be less than or equal to 2 58 in. 67 mm.7.1.1 Units shall not exceed 36 in. 915 mm in any face dimension and shall not exceed more than 5 ftSampling and testingshould be performed at le
49、ast annually2 0.5 mto meet2 in total face area. the requirements of this standard.7.2 Shear Bond Strength: Each unit tested shall develop a shear bond strength with the mortar substrate of not less than 50 psi350 kPa when tested in accordance with Test Method C482 with the following modifications (listed in 7.2.1 through 7.2.5):7.2.1 Test a minimum of five (5) units at a minimum age of 28 days after manufacture.NOTE 3Test Method C482C482 requires curing for seven (7) days following fabrication of test specimens. I
