1、Designation: C1694 09 (Reapproved 2017)Standard Specification forReinforced Autoclaved Aerated Concrete (AAC) Elements1This standard is issued under the fixed designation C1694; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers reinforced solid elementsmanufactured from autoclaved aerated concrete (AAC), acement
3、itious product addressed by Specification C1693. Thespecification addresses dimensional tolerances, maximum lim-its for drying shrinkage, requirements for steel reinforcement,and shipping and handling.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parent
4、heses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 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
5、 safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Internation
6、al Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A82/A82M Specification for Steel Wire, Plain, for ConcreteReinforcement (Withdrawn 2013)3C1693 Specification for Autoclaved Aerated C
7、oncrete(AAC)3. Classification3.1 Reinforced AAC elements manufactured in accordancewith this specification shall be classified according to theirstrength class.4. Materials and Manufacture4.1 Reinforced AAC elements manufactured in accordancewith this specification shall be composed entirely of AACm
8、aterial conforming to Specification C1693.5. Physical Requirements5.1 Compressive StrengthThe compressive strength of theelements shall be determined according to SpecificationC1693, and shall conform to the requirements of SpecificationC1693 for the strength class in which the elements areclassifie
9、d.5.2 Dry Bulk DensityThe dry bulk density shall be deter-mined according to Specification C1693, and shall conform tothe requirements of Specification C1693 for the strength classin which the elements are classified.5.3 Drying ShrinkageThe drying shrinkage shall be deter-mined in accordance with Sp
10、ecification C1693, and the aver-age drying shrinkage shall conform to the requirements ofSpecification C1693 for the strength class in which theelements are specified.5.4 Steel ReinforcemenThe properties of the steel rein-forcement shall be determined in accordance with SpecificationA82/A82M and sha
11、ll conform to the requirements of Table 1.5.5 Weld-Point Shear StrengthThe weld-point shearstrength in the reinforcement shall be determined in accordancewith Section 8 and shall conform to the requirements of Table2.5.6 Concrete Cover of Steel ReinforcementThe minimumconcrete cover over the steel r
12、einforcement shall be 0.375 in.(10 mm). The reinforcing steel shall receive a corrosion-resistant coating before casting.NOTE 1Acover greater than 0.375 in. (10 mm) may be required in fireresistant applications.5.7 Effectiveness of Corrosion Protection of SteelReinforcementThe effectiveness of the c
13、orrosion protectionfor the steel reinforcement shall be determined according to1This specification is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.60 onPrecast Autoclaved Aerated Concrete.Current edition approved June 1,
14、 2017. Published July 2017. Originally approvedin 2009. Last previous edition approved in 2009 as C1694 09. DOI: 10.1520/C1694-09R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume infor
15、mation, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was
16、 developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1Section 7, an
17、d the resulting percentage of surface area that iscorroded shall not exceed 5 % of the total surface area.6. Dimensions and Permissible Variations6.1 The dimensions of the reinforced elements shall be asspecified by theAAC manufacturer.Allowable deviations fromthe specified element dimensions are pr
18、ovided in Table 3.7. Corrosion Protection of Steel Reinforcement in AAC7.1 Apparatus:7.1.1 Storage Container, with dimensions sufficient to com-pletely immerse AAC specimens.7.2 Test SpecimensA test set shall consist of six testspecimens having the dimensions 16 in. (400 mm) by width ofthe reinforce
19、d element by thickness of the reinforced element.The exposed surface areas of the steel reinforcement at eachend of the test specimen shall be coated with the corrosion-protection compound and allowed to dry before testing. Threespecimens are to be kept as reference specimens, and threespecimens sha
20、ll be tested.7.3 Procedure:7.3.1 Reference SpecimensStore the reference specimensin a room having a temperature of 59 to 68F (15 to 20C) anda relative humidity of 50 to 70 %.7.3.2 Test SpecimensImmerse the test specimens in anaqueous sodium chloride solution, 3 % sodium chloride (NaCl)by mass, for p
21、eriods of2hatintervals of three days. Repeat fora total of ten test cycles. When the specimens are not immersedin the sodium chloride solution, store them under the sameconditions as the reference specimens.After completing the tentesting cycles, allow the specimens to air dry for 4 h.7.3.3 Inspecti
22、on for RustAfter completing the testingprocedure, remove the autoclaved aerated concrete around thesteel reinforcement in the reference specimen and the testspecimens. By visual inspection, determine the area of rustcovering the steel and express that area as a percentage of thetotal area of the spe
23、cimen, using the following calculation:At5 n1d1l11n2d2l2mm2! (1)Ar5(wilimm2! (2)Pr5 100 Ar/At! (3)where:At= total surface of reinforcement present in the specimen(mm2)n1= number of longitudinal reinforcing rods,d1= diameter of the longitudinal reinforcing rods (mm),l1= length of the longitudinal rei
24、nforcing rods (mm),n2= number of transverse reinforcing rods,d2= diameter of transverse reinforcing rods (mm),l2= length of the transverse reinforcing rods (mm),Ar= area of rusted surface,wi= unrolled width of the corroded surface,li= length of the corroded surface, andPr= percentage of surface area
25、 which is rusted.The total area of corroded surface shall be reported as theaverage total area for the three test and the three referencespecimens.8. Weld-Point Shear Strength8.1 ApparatusPerform this test using the device shown inFig. 1 or an equivalent device that can be fitted into a normaltensio
26、n testing machine.8.2 SpecimenUse a specimen of the shape shown in Fig.2. Take specimens at random from welded mats of reinforce-ment that have not been coated with a corrosion-resistantcompound. The bar with the largest diameter shall be selectedas the test specimen. Do not fabricate special test s
27、pecimens forthis test, except for initial qualification of the welding device.8.3 ProcedureGrip the specimen in the test fixture so thatthe tension bar is centrally located and rotation of the anchor-ing bar is prevented. Load at a rate not exceeding 112 lbf/s (0.5kN/s).8.4 Test ResultsReport the fo
28、llowing:8.4.1 Nominal steel quality.8.4.2 Diameter of the longitudinal bar (tensioned bar).8.4.3 Diameter of the transverse bar (anchoring bar).8.4.4 Ultimate shear force.9. Shipping and Handling of Reinforced AAC Elements9.1 Protect reinforced AAC elements from damage duringshipping by placement on
29、 pallets or other supports, banding ofthe elements, placement of material between the elements, orany other method deemed appropriate by the AAC manufac-turer. Handle reinforced AAC elements using lifting devices orclamps recommended by the AAC manufacturer.TABLE 1 Properties of Steel ReinforcementP
30、roperty MinimumCharacteristicValueYield strength, min, ksi (MPa) 70 (485)Tensile strength, min, ksi (MPa) 80 (550)Reduction of area, min, % 30AAFor material testing over 100 ksi (690 MPa) tensile strength, the reduction of areashall be not less than 25 %.TABLE 2 Weld-Point Shear Strength for Steel R
31、einforcementDiameter of theLongitudinal Reinforcement, in. (mm)Minimum Shear Strengthof the Joint, lbf (kN)0.16 (4.0) 495 (2.20)0.18 (4.5) 598 (2.66)0.20 (5.0) 771 (3.43)0.24 (6.0) 1113 (4.95)0.28 (7.0) 1513 (6.73)0.32 (8.0) 1987 (8.84)0.35 (9.0) 2502 (11.13)0.40 (10.0) 3091 (13.75)0.43 (11.0) 3741
32、(16.64)0.47 (12.0) 5339 (19.79)TABLE 3 Dimensional Tolerances for Reinforced AAC ElementsDimension Floor, Roof, and Wall PanelsLength 0.20 in. (5 mm)Width 0.12 in. (3 mm)Thickness 0.12 in. (3 mm)Tongue/groove alignment 0.12 in. (3 mm)C1694 09 (2017)210. Visual Inspection10.1 All elements shall be so
33、und and free of defects thatwould interfere with the proper placement of the unit or impairthe strength or permanence of the construction. Minor imper-fections incidental to the usual methods of manufacture, orresulting from customary methods of handling in shipment anddelivery, shall not be deemed
34、grounds for rejection.FIG. 1 Weld-Point Shear Strength Test ApparatusFIG. 2 Weld-Point Shear Strength Test SpecimensC1694 09 (2017)311. Sampling and Testing11.1 The purchaser or his authorized representative shall beaccorded proper facilities to inspect and sample the elements atthe place of manufac
35、ture from the lots ready for delivery.11.2 The elements shall be sampled and tested in accor-dance with test methods of this specification.12. Rejection and Rehearing12.1 If the shipment fails to conform to the specificrequirements, the manufacturer shall be permitted to sort it, andnew specimens sh
36、all be selected by the purchaser from theretained lot and tested at the expense of the manufacturer. If thesecond set of specimens fails to conform to the testrequirements, the entire lot shall be rejected.13. Expense of Tests13.1 Except as specified in Section 12, and unless otherwiseagreed, the ex
37、pense of inspection and testing shall be borne bythe purchaser.14. Precision and Bias14.1 The precision and bias of the test procedures describedin Section 8, Section 9, and Section 10 are being determinedand will be provided when sufficient data are available toindicate acceptable tolerances in rep
38、eatability and reproduc-ibility.15. Keywords15.1 autoclaved aerated concrete (AAC); compressivestrength; density; reinforced elements; reinforcementASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users
39、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 committee and must be reviewed every fi
40、ve 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 meeting of theresponsible technical
41、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 Box C700, West Conshohocken, P
42、A 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:/ 09 (2017)4
