ASTM C1692-2018 Standard Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry.pdf

1、Designation: C1692 11C1692 18Standard Practice forConstruction and Testing of Autoclaved Aerated Concrete(AAC) Masonry1This standard is issued under the fixed designation C1692; 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.INTRODUCTIONMasonry units of autoclaved aerated concrete (AAC) can be produced with dimensional tolerancesas small as 0.06

3、in. (1.5 mm). As a consequence, AAC masonry units can be laid with mortar jointsapproximately 0.38 in. (10 mm) thick, and also with thinner joints. The exterior face of the resultingAAC masonry wall is then protected from the elements using an exterior wythe of masonry, a claddingsystem, or a breath

4、able coating resistant to penetration by liquid water. The interior face can beplastered, furred, or painted.1. Scope*1.1 This practice applies to construction and testing of masonry made of AAC units. It includes or references terminology,material specifications, and methods of test. It references

5、specifications and test methods.1.2 The values stated in inch-pound units 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.1.3 This standard does not purport to address all o

6、f the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use.1.4 This international standard was dev

7、eloped in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Docum

8、ents2.1 ASTM Standards:2C270 Specification for Mortar for Unit MasonryC476 Specification for Grout for MasonryC1072 Test Methods for Measurement of Masonry Flexural Bond StrengthC1232 Terminology for MasonryC1660 Specification for Thin-bed Mortar for Autoclaved Aerated Concrete (AAC) MasonryC1691 Sp

9、ecification for Unreinforced Autoclaved Aerated Concrete (AAC) Masonry UnitsC1693 Specification for Autoclaved Aerated Concrete (AAC)C1717 Test Methods for Conducting Strength Tests of Masonry Wall PanelsE96/E96M Test Methods for Water Vapor Transmission of MaterialsE514E514/E514M Test Method for Wa

10、ter Penetration and Leakage Through MasonryE518E518/E518M Test Methods for Flexural Bond Strength of MasonryE519E519/E519M Test Method for Diagonal Tension (Shear) in Masonry Assemblages1 This practice is under the jurisdiction ofASTM Committee C15 on Manufactured Masonry Units and is the direct res

11、ponsibility of Subcommittee C15.10 on AutoclavedAerated Concrete Masonry Units.Current edition approved Dec. 1, 2011Sept. 1, 2018. Published December 2011October 2018. Originally approved in 2009. Last previous edition approved in 20102011as C1692 10.C1692 11. DOI: 10.1520/C1692-11.10.1520/C1692-18.

12、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 and is intended only to

13、 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 only the current versionof

14、 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 States12.2 Other Standards:TMS 40208 / ACI 53009 /

15、ASCE 508402 Building Code Requirements for Masonry Structures3TMS 602-08 / ACI 530.1-08 / ASCE 6-08602 Specification for Masonry Structures33. Terminology3.1 DefinitionsTerms defined in Terminology C1232 shall apply in this practice.4. Significance and Use4.1 This practice applies to the materials a

16、nd methods used in the construction ofAAC masonry. It directly references theAACmaterials standards under the jurisdiction of ASTM Committee C27 and the workmanship requirements of TMS 602-08 / ACI530.1-08 / ASCE 6-08 602 and supplements those workmanship requirements with additional requirements pa

17、rticular to AACmasonry.5. Materials5.1 AAC masonry units shall conform to Specification C1691.5.2 Mortar for thick-bed AAC masonry shall meet the performance standards prescribed by the AAC manufacturer.5.3 Mortar for thin-bed AAC masonry shall comply with Specification C1660.NOTE 1In general, AAC m

18、anufacturers performance standards for mortar for AAC masonry address minimum dry compressive strength, minimumwet compressive strength, minimum bond strength, minimum open time, and minimum working time. They also require that the mortar provide sufficientbond to the AAC masonry unit so that flexur

19、al tensile strength is controlled by the flexural tensile strength of the units rather than by the bond betweenunits and mortar.5.4 Grout shall conform to Specification C476.6. Methods of Test6.1 Compressive Strength Test for AAC MasonryReport the compressive strength of the AAC masonry as the stren

20、gth of theAAC material determined in accordance with Specification C1693.NOTE 2Bond-strength requirements for AAC masonry mortar (Note 1) result in AAC masonry assemblages that behave monolithically. Thecompressive strength of anAAC prism depends on the prisms aspect ratio only, and not on the prese

21、nce, number, or orientation of joints.Any reasonableaspect ratio can be used to verify compressive strength, provided that the same aspect ratio is used to calibrate design equations. Design equations forAAC masonry are calibrated using compressive strengths determined in accordance with Specificati

22、on C1693. It is therefore appropriate to report thosesame strengths, which Specification C1693 requires AAC manufacturers to determine and report.NOTE 3The tests noted in subsections 6.2 through 6.4 are not required by TMS 40208 / ACI 53009 / ASCE 508 or TMS 602-08 / ACI 530.1-08/ ASCE 6-08. 402 or

23、TMS 602. They may be required for research purposes or other reasons.6.2 Flexural Strength Test for AAC Masonry AssemblagesIf required, conduct flexural strength tests in accordance with TestMethods C1717, E518E518/E518M, or C1072.6.2.1 If conducting flexural strength tests in accordance with Test M

24、ethods E518E518/E518M, construct at least five testspecimens as stack-bonded prisms at least 32 in. (0.81 m) high. Use mortar meeting the performance requirements of the AACmanufacturer. Conduct the flexural strength test in accordance with Test Methods E518E518/E518M, Test Method A (SimplySupported

25、 Beam with Third-point Loading).6.2.2 If conducting flexural strength tests in accordance with Test Method C1072, construct test specimens as stack-bondedprisms comprising at least three bed joints. Test a total of at least five joints. Use mortar complying with 5.2 or 5.3 as appropriate.6.3 Shear S

26、trength Test for AAC Masonry Assemblages AssemblagesIf required, conduct shear strength tests in accordancewith Test Method E519E519/E519M. Cure the gypsum capping material for at least six hours prior to testing. Use mortarcomplying with 5.2 or 5.3 as appropriate.6.4 Modulus of Elasticity of AAC Un

27、itsIf required, determine the modulus of elasticity in accordance with SpecificationC1693.7. Workmanship for Thick-bed AAC Masonry7.1 Workmanship shall be in accordance with TMS 602-08 / ACI 530.1-08 / ASCE 6-08 602 (Part 3Execution), and with theadditional requirements of this practice.7.2 Install

28、the first course in a full bed of mortar conforming to Specification C270, Type M, S or N.7.3 Use thick-bed mortar complying with 5.2.7.4 Mix thick-bed mortar as prescribed by the AAC manufacturer.3 Available from The Masonry Society, 3970 Broadway, Suite 201-D Boulder, CO 803041135,105 South Sunset

29、 Street, Suite Q, Longmont, CO 805016172,http:/www.masonrysociety.org.C1692 1827.5 Lay subsequent courses using thick-bed mortar, following the provisions of TMS 602-08 / ACI 530.1-08 / ASCE 6-08 602(Part 3Execution) for laying solid units.7.6 Make minor adjustments by sanding the surfaces of the un

30、its using a sanding board.7.7 If it is necessary to field-cut units, cut them to tolerances consistent with 5.1.7.8 If AAC masonry is to be grouted, wet it thoroughly before grouting, to ensure that the grout flows to completely fill thespace to be grouted.8. Workmanship for Thin-bed AAC Masonry8.1

31、Workmanship shall be in accordance with TMS 602-08 / ACI 530.1-08 / ASCE 6-08 602 (Part 3Execution), and with theadditional requirements of this practice.8.2 Install the first course in a full bed of mortar conforming to Specification C270, Type M, S or N.8.3 Use thin-bed mortar complying with 5.3.8

32、4 Mix thin-bed mortar as prescribed by the AAC manufacturer.8.5 Lay subsequent courses using thin-bed mortar. Use the special notched trowel available from the AAC manufacturer tospread the thin-bed mortar so that it completely fills the bed joints. Similarly fill the head joints, unless the units

33、are designed tobe connected across the head joints by tongue-and-groove or other mechanical means rather than by thin-bed mortar. Spread mortarand place the next unit before the mortar dries. Set the units into final position, in mortar joints approximately 0.06-in. (1.5-mm)thick, by striking on the

34、 end and top of the unit with a rubber mallet.8.6 Lay units in alignment with either the inside or the outside plane of the wall.Align vertically and plumb using only the firstcourse for reference. Make minor adjustments by sanding the surfaces of the units with a sanding board.8.7 If it is necessar

35、y to field-cut units, cut them to tolerances consistent with 5.1.8.8 IfAAC masonry is to be grouted, wet it thoroughly before grouting, to ensure that the grout flows to completely fill the spaceto be grouted.9. Exterior Surface Treatment9.1 AAC masonry exposed to weather shall be protected with an

36、exterior wythe of masonry, a cladding system, or a coatingcomplying with the requirements of 9.2 and 9.3.9.2 Vapor PermeabilityThe PERM rating of the coating, determined in accordance with Test Methods E96/E96M, shall notbe less than 5.9.3 Liquid PermeabilityThe coating shall show no leakage when te

37、sted using the following procedure:9.3.1 As shown in Fig. 1, prepare an AAC masonry assemblage with plan dimensions of 12 by 12 in. (0.3 by 0.3 m) and athickness of 1 in. (25 mm). Make the assemblage using two pieces ofAAC material with a vertically oriented joint between them.Join the two pieces at

38、 the joint using thin-bed or thick-bed mortar as appropriate to the AAC masonry being tested. Cover the topsurface with the coating to be tested. Affix to the top surface of the specimen, over the joint, a clear glass or plastic measurementtube with an inside diameter between 2 and 4 in. (50 and 100

39、 mm), and a height of at least 24 in. (0.6 m). Prepare a reference tube,closed at the bottom, of the same material and dimensions as the measurement tube. Fill the measurement tube and the referenceFIG. 1 Masonry Assemblage for Testing Liquid Permeability of Exterior Surface Treatment for AAC Masonr

40、yC1692 183tube with water to a height of 21.6 in. (0.55 m), within a tolerance of 61 in. (25 mm). Note the original height of water, and theheight after 5 h, in the measurement tube and in the reference tube. Record the difference between the initial height and the finalheight of water in the measur

41、ement tube, and in the reference tube. If those differences differ by less than 1 mm, the coating shallbe considered to have shown no leakage.NOTE 4The above test method is intended to verify the water-penetration resistance of the coating only, when applied to an AAC masonry substrate.To examine th

42、e water-penetration resistance of an AAC masonry system, tests such as Test Method E514E514/E514M are appropriate.10. Keywords10.1 autoclaved aerated concrete (AAC); masonry; workmanshipBIBLIOGRAPHY(1) Autoclaved Aerated Concrete: Properties, Testing, and Design, RILEM Recommended Practice, Taylor 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:/ 184