1、Designation: C1732 14C1732 15Standard Practice forInstallation of Concrete Floor Tiles1This standard is issued under the fixed designation C1732; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the installation of concrete floor tile (CFT) units for application as exterior and interior flooring. Unitsdescribed by t
3、his practice shall be manufactured to meet the requirements of Specification C1731. This practice is limited to theinstallation of CFT units.1.2 This practice covers aspects of installation relating to performance in service.1.3 UnitsThe values stated in inch-pound units are to be regarded as standa
4、rd. The values given in parentheses aremathematical conversions to SI units that are provided for information only and are not considered standard.1.4 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 st
5、andard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C270 Specification for Mortar for Unit MasonryC920 Specification for Elastomeric Joint SealantsC979 Specification for Pigments
6、for Integrally Colored ConcreteC1232 Terminology of MasonryC1325 Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer UnitsC1384 Specification for Admixtures for Masonry MortarsC1714/C1714M Specification for Preblended Dry Mortar Mix for Unit MasonryC1731 Specification for Concret
7、e Floor Tile2.2 ANSI Standard:ANSI A108A118 American National Standards for the Installation of Ceramic Tile32.3 International Concrete Repair Institute Standard:ICRI Guideline No 310.2-1997 Selecting and Specifying Concrete Surface Preparation for Sealers, Coating, and PolymerOverlays42.4 The Mason
8、ry Society Standard:TMS 602-13/ACI 530.1-13/ASCE 6-13 Specification for Masonry Structures53. Terminology3.1 Definitions:3.1.1 birdcage mixer attachment, nmixer attachment with open paddles designed to prevent air entrainment.3.1.2 cementitious backer board, na fiber-reinforced cement-based substrat
9、e sheet for CFT installation.1 This test method is under the jurisdiction ofASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.05 on MasonryAssemblies.Current edition approved Dec. 15, 2014Dec. 1, 2015. Published January 2015January 2016. Last previ
10、ous edition approved in 2014 as C1732 14. DOI:10.1520/C1732-14.10.1520/C1732-15.2 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 o
11、n the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.4 Available from International Concrete Repair Institute 10600 West Higgins Road, Suite 607 Rosemont, IL 60018, http:/www.icri.org.5 Available from The
12、Masonry Society 105 South Sunset Street, Suite Q, Longmont, CO USA 80501-6172, http:/www.masonrysociety.org.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 te
13、chnically possible to adequately 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.Copyright ASTM International, 100 Barr Harbor Drive, P
14、O Box C700, West Conshohocken, PA 19428-2959. United States13.1.3 concrete floor tile (CFT), na manufactured masonry unit that is a blend of cementitious material, aggregates, pigments,chemical admixtures, and water formed into the appropriate shape and cured in order to be applied by way of masonry
15、 mortar toan approved substrate.3.1.4 membrane, na coating applied to the substrate as a liquid or sheet and used to protect the CFT installation from waterintrusion, substrate cracks, thermal expansion/contraction, cement shrinkage, and subfloor deflection.3.1.4.1 DiscussionMembranes include but ar
16、e not limited to anti-fracture, cleavage, crack isolation, uncoupling, and waterproofing membranes.3.1.5 retemper, vto add water to mortar or grout to replace water lost to evaporation.3.1.6 sealer, nwater- or petroleum-based material applied as a liquid to provide protection from water, stains, and
17、contaminants.3.1.7 setting bed, nthe mortar subsurface to which CFT units are adhered.4. Significance and Use4.1 This practice is intended to provide technical information for designers, architects, and installers of CFT units in residentialand light commercial construction. This practice does not a
18、ddress installation methods or techniques for floor tile unitsmanufactured from other materials.5. Materials5.1 Materials shall comply with the contract documents. If the contract documents do not include materials or there are nocontract documents, then the materials in 5.2 through 5.8 shall be use
19、d.5.2 Concrete Floor Tile (CFT)CFT units shall comply with the requirements of Specification C1731.5.3 Mortar:5.3.1 Mortar shall comply with one of the following requirements:5.3.1.1 Thin set mortar and medium bed mortar shall comply with the requirements of ANSI A118.4 and A118.11.5.3.1.2 Type N, S
20、, or M mortar shall comply with the requirements of Specification C270.5.3.1.3 Preblended dry mortar shall comply with the requirements of Specification C1714/C1714M.5.3.2 Admixtures shall comply with Specification C1384. Chloride admixtures shall not be used with colored concrete or grout.5.4 Grout
21、:5.4.1 Premixed sanded or unsanded cementitious grout shall comply with the requirements of ANSI A118.6.5.4.2 Premixed sanded or unsanded high performance cementitious grout shall comply with the requirements of ANSI A118.7.NOTE 1High performance grouts include latex/polymer powder or a liquid latex
22、 admixture for improved tensile strength, flexural strength, and lowerwater absorption.5.4.3 Modified epoxy emulsion grout shall comply with the requirements of ANSI A118.8.5.4.4 Pigments used in grout shall comply with the requirements of Specification C979.5.5 Membranes:5.5.1 All membranes shall m
23、eet applicable ASTM International and ANSI standards and be installed per the membranemanufacturers installation instructions.5.6 Sealer:5.6.1 Sealer material and installation shall meet applicable ASTM International and ANSI standards and local environmentalrequirements.5.7 Cementitious Backer Boar
24、ds:5.7.1 Cementitious backer boards shall comply with Specification C1325 and shall meet requirements of ANSI A118.9.5.8 Joint Sealants:5.8.1 Joint sealants shall comply with the requirements of Specification C920.6. Environmental Conditions6.1 Hot and Dry ConditionsWhen the environmental conditions
25、 exceed 90F (32.2C), installation of mortar and grout shallcomply with the hot weather construction requirements of local building code, the recommendations of CFT manufacturer, or hotweather construction provisions of TMS 602/ACI 530.1/ASCE 6, Article 1.8 D.6.2 Freezing or Low TemperaturesInstallat
26、ions shall be protected from temperatures below 40F (4.4C). When theenvironmental conditions are below 40F (4.4C), installation of mortar and grout shall comply with the cold weather constructionprovisions of TMS 602/ACI 530.1/ASCE 6, Article 1.8 C.C1732 1526.2.1 Protect CFT units from moisture. Uni
27、ts containing frozen moisture, visible ice, or snow on any surface shall not beinstalled.7. Substrate/Surface Preparation7.1 New or Existing Concrete Slab:7.1.1 Concrete surface profiles shall range from CSP 2 to CSP 5 as described in ICRI Guideline No 310.27.1.2 Light-broom-finished concrete slab s
28、urface is recommended. Troweled smooth finished surfaces shall be mechanicallyabraded by grinding or shot blasting or by other means designed to provide an adequate bond.7.1.3 Allow the concrete slab to cure for a minimum of 28 days or as otherwise specified to provide a dimensionally stablesubstrat
29、e for installation.7.1.4 Inspect the surface for paint, dirt, sealer, or any other foreign substances that may inhibit bonding and ensure the surfaceis clean and free of loose or spalling material.7.1.5 If a membrane is specified, consult the membrane manufacturer for substrate requirements.7.2 Plyw
30、ood Floor:7.2.1 Do not bond CFT directly to wood substrate; prepare substrate using one of three materials:7.2.1.1 Cementitious backer board.7.2.1.2 Cleavage or uncoupling membrane.7.2.1.3 Prefloated 114- to 2-in. (31.8- to 50-mm) mortar bed on a cleavage membrane shall meet requirements ofANSIA108.
31、2.Mortar beds over 2 in. (50-mm) shall be installed per the contract documents.7.3 Waterproofing and Crack Isolation Membranes:7.3.1 Waterproofing membranes are recommended for interior installations and shall comply with ANSI A118.10.7.3.2 Crack isolation membranes are recommended for interior and
32、exterior installations and shall comply withANSIA118.12.7.4 Substrate shall be plumb or level, and true with maximum variation from required plane to be 18-in. (3.5 mm) in 10-ft. (3.05m).7.5 Movement joints shall meet the requirements of ANSI A108.01.8. Installation of CFT Units8.1 General Installat
33、ionThree installation options are provided; CFT manufacturers recommendations shall be consulted forpreferred method.8.1.1 Thin-set Mortar:8.1.1.1 The thin-set mortar bed thickness shall be no greater than 316 in. (4.8 mm) thick or as specified.8.1.2 Standard Bed Mortar:8.1.2.1 Use premixed dry mort
34、ar that meets the requirements of Specification C1714/C1714M or mix in accordance with C270.8.1.2.2 The mortar bed thickness shall range from minimum 12 in. (13 mm) thick to maximum 1-in. (25 mm) thickness or asspecified.8.1.3 Medium Bed Mortar:8.1.3.1 The medium bed mortar bed thickness shall be no
35、 greater than 34 in. (19 mm) thick or as specified.NOTE 2Medium-bed mortars use larger aggregate to allow for a thicker setting bed than thin-set mortar and are designed for use with large format,heavy, or thick tiles.NOTE 3The TCNA Handbook currently defines large format tiles as 8 in. by 8 in. and
36、 larger.8.2 The bonding surface of the CFT unit shall be moistened before installation. The surface shall appear damp but withoutfreestanding water. Units shall not be immersed or submerged in water before installation.8.3 Review and follow the instructions printed on each bag of packaged thin-set m
37、ortar, medium bed mortar, or premixed drymortar.8.3.1 Mix mortar and clean cool water together by hand or with a variable-speed electric drill at a slow speed (150 to 200 rpm16 to 21 rad/s) to a smooth, paste consistency.8.3.2 Use a birdcage mixer attachment rather than a paddle mixer attachment to
38、avoid entraining air in the mix.8.3.3 Stir mortar with the trowel to keep fluffy and do not retemper.8.4 Spread mortar onto the substrate using the flat edge of a 12 in. (12.7-mm) square notched trowel or 34-in. (19.1-mm) roundednotched trowel. Use the notched edge to form grooves in one direction u
39、nder each CFT unit. When mortar is properly mixed, thetroweled ridges on the substrate should stand with little or no slump.8.5 Do not allow the mortar to “skin over” and lose plasticity before the CFT units are placed. Extreme air and slab temperaturesmay affect the mortars setting time. Do not spr
40、ead too much mortar at one time.8.6 Spread mortar uniformly on the back of each CFT unit using the flat side of a trowel so that a minimum of 95 % of the backsurface is covered.C1732 1538.7 Place CFT units by moving them 18 to 14 in. (3.175 to 6.35 mm) back and forth perpendicular to the ridges unti
41、l the ridgescollapse and all the voids are filled.8.8 CFT units shall be cut with a wet saw for best results. Wash pieces with clean water after cutting to avoid staining fromgrit and debris.9. Grouting and Finishing Joints9.1 When grout joints are up to 18 in. (3.2 mm) wide, nonsanded grout shall b
42、e used. When grout joints are 18 to 1 12 in. (3.2to 38.1 mm) wide, sanded grout or mortar mixed in accordance with Specification C270 should be used.9.2 A grout bag is recommended to fill all joints. If grout is floated with a trowel, tiles shall be presealed to prevent staining.9.3 Completely fill
43、each grout joint slightly higher than the CFT surface.9.4 Tool and finish joints as recommended by the CFT manufacturer.10. Cleaning10.1 Do not allow mortar and grout to set up on the surface of the CFT unit. Remove excess mortar and grout when it hassufficiently hardened but before final set.NOTE 4
44、CFT units can be presealed to ease the removal of grout scum and haze.10.1.1 Do not use a wet brush to treat mortar joints or clean excess mortar.10.1.2 Do not use a wire brush to clean excess mortar.10.1.3 Do not use muriatic acid to clean excess mortar or grout; use acid-based products with cautio
45、n.10.2 Consult the CFT manufacturer regarding cleaning with a pressure washer.11. Sealing11.1 Consult the CFT manufacturer for recommendations. Select the sealer appropriate for the location of installation, expectedtraffic, and appearance desired.11.2 Apply the sealer in accordance with the sealer
46、manufacturers installation recommendations.11.3 At a minimum, ensure the surface is clean and dry before sealing to avoid discoloration. Remove any residue and grouthaze before sealing.12. Keywords12.1 cementitious; concrete floor tile; flooring; grout; installation; masonry; membrane; mortar; tileA
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