1、Designation: D7693/D7693M 15Standard Guide forApplication of Heat Weldable Modified BituminousWaterproofing Membranes Systems for New ConcreteDecks1This standard is issued under the fixed designation D7693/D7693M; the number immediately following the designation indicates theyear of original adoptio
2、n or, in the case of revision, 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.1. Scope1.1 This guide presents application recommendations forthe heat welding install
3、ation of multi-ply Styrene ButadieneStyrene (SBS) and Atactic Polypropylene (APP) modifiedbituminous systems to new, reinforced, cast in place structuralconcrete used as part of a horizontal waterproofing system overoccupied spaces of buildings where covered by a separatewearing course.1.2 For the p
4、urpose of this guide, the substrate shall bestructurally sound, sloped to drain, able to accept the weight ofthe membrane and other system materials, and meet the localbuilding code requirements. Similarly, all components of thewaterproofing system are assumed to comply with any federal,state, and l
5、ocal environmental regulations that may be in effectat the time of installation. Expansion joints, insulation, drain-age layers, filter sheets, overburden, and the wearing surfacesare beyond the scope of this guide.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separa
6、tely as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 This standard does not purport to address all of thesafety concerns,
7、 if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D41 Specification for Asphalt Primer Used in
8、 Roofing,Dampproofing, and WaterproofingD1079 Terminology Relating to Roofing and WaterproofingD3019 Specification for Lap Cement Used withAsphalt RollRoofing, Non-Fibered, Asbestos-Fibered, and Non-Asbestos-FiberedD4586 Specification for Asphalt Roof Cement, Asbestos-FreeD5295 Guide for Preparation
9、 of Concrete Surfaces for Ad-hered (Bonded) Membrane Waterproofing SystemsD5898 Guide for Details for Adhered Sheet WaterproofingD5957 Guide for Flood Testing Horizontal WaterproofingInstallationsD6162 Specification for Styrene Butadiene Styrene (SBS)Modified Bituminous Sheet Materials Using a Combi
10、na-tion of Polyester and Glass Fiber ReinforcementsD6163 Specification for Styrene Butadiene Styrene (SBS)Modified Bituminous Sheet Materials Using Glass FiberReinforcementsD6164 Specification for Styrene Butadiene Styrene (SBS)Modified Bituminous Sheet Materials Using PolyesterReinforcementsD6222 S
11、pecification for Atactic Polypropylene (APP) Modi-fied Bituminous Sheet Materials Using Polyester Rein-forcementsD6223 Specification for Atactic Polypropylene (APP) Modi-fied Bituminous Sheet Materials Using a Combination ofPolyester and Glass Fiber ReinforcementsD6451 Guide for Application of Aspha
12、lt Based ProtectionBoardD6506 Specification for Asphalt Based Protection Board forBelow-Grade Waterproofing2.2 American Concrete Institute Standard:3ACI 301 Specifications for Structural Concrete for Buildings1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and
13、 is the direct responsibility of Subcommittee D08.22 on Water-proofing and Dampproofing Systems.Current edition approved March 15, 2015. Published March 2015. DOI:10.1520/D7693_D7693M-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servicea
14、stm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Concrete Institute (ACI), P.O. Box 9094, FarmingtonHills, MI 48333-9094, http:/www.concrete.org.Copyright ASTM International, 100 Barr Harbor Drive,
15、PO Box C700, West Conshohocken, PA 19428-2959. United States12.3 FMRC Standard:4FM 4470 Approval Standard, Class Roof Covers, latestedition, where applicable for corrosion resistant compo-nentsNRCA / MRCA Certified Roofing Torch Applicator(CERTA) Program3. Terminology3.1 For definitions of terms, se
16、e Terminology D1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 construction jointa butt joint formed in a structuralslab in order to end one pour and start another pour later. Thejoint is usually a cold joint and may be held together withreinforcing steel in the slab, or the steel may
17、be discontinuousby design.3.2.2 heat weldingthe adhering or joining, or both, of themodified bitumen membrane sheet to itself or the substrate, orboth, with a torch, hot air, or other means of direct thermalcontact.4. Significance and Use4.1 This guide provides general procedures, information,guidel
18、ines, and precautions for the application of heat weldedmodified bituminous waterproofing systems used as part of ahorizontal waterproofing system.4.2 This guide is not all-inclusive and is intended only tosupplement detailed instructions from designers and systemmanufacturers.4.3 The horizontal dec
19、k or substrate referred to in this guideis reinforced cast-in-place structural concrete.5. Storage and Handling of Materials5.1 Store materials on raised platforms or pallets. Store rollson end with selvage ends up. Materials shall be stored in a dry,ventilated, and weatherproof location. Avoid dama
20、ge or em-bedment of foreign materials.5.2 Store membrane materials to prevent system suppliersmarkings from being destroyed.5.3 Store primer in tightly closed original containers attemperatures recommended by the system supplier. Do nottransfer contents of one container to another container. Do notm
21、ix different materials. Do not thin primer, except as directedby the system manufacturer.5.4 Modified bituminous rolls and other materials are to bebrought to the job site in good condition, handled so as not tobe damaged.6. Environmental Conditions6.1 Do not install sheet material during inclement
22、weather,on wet or frost-covered surfaces, during rainfall, blowing dust,or high winds that will inhibit or interfere with sheet materialadhesion.6.2 Follow recommendations of system supplier for systemapplication procedures when ambient temperatures are below5C 40F.6.3 Surfaces to receive the membra
23、ne shall be protectedfrom dirt and debris.7. Materials7.1 Modified Bituminous SheetPrefabricated modified bi-tuminous sheets reinforced with either polyester or glass fiberfabrics or a combination of the two which use styrenebutadiene styrene (SBS) or atactic polypropylene (APP) as theprimary modifi
24、er and meet the requirements of SpecificationsD6162, D6163, D6164, D6222, D6223,orD6506.7.2 Primer, asphalt primer. See Specification D41.7.3 Roof Cement, asphalt roof cement. See SpecificationsD4586 and D3019.7.4 Protection Board, asphalt based protection board. SeeSpecification D6506.7.5 Mechanica
25、l AffxmentsThe mechanical fasteners andstress distribution bars or strips specified for use in the systemmust meet the corrosion guidelines outlined in FMRC Standard4470.7.6 Joint Filler, material used to mostly fill constructionjoints in concrete prior to the application of a sealant.7.7 Sealant, m
26、aterial that is used to fill and seal a crack priorto the application of a waterproofing material.8. Substrate Preparation8.1 The structural slab should have a finish of sufficientlyrough texture to provide a mechanical bond for the membranebut not so rough to preclude achieving continuity of themem
27、brane across the surface. The minimum finish is an ACI301 float finish; an ACI 301 trowel finish, without the finaltroweling, is preferred. Refer to Guide D5295 for additionalsurface preparation guidelines.8.2 Refer to the membrane manufacturer for guidelinesrelated to the moisture content of the co
28、ncrete or the appropri-ate methods to mitigate loss of adhesion over new concrete, orboth.8.3 Surfaces to receive modified bituminous sheets are to befrost-free and dry, clean, and free of contaminants such as dirt,debris, loose material, cracks, laitance, voids, and sharp pro-jections which would p
29、revent satisfactory installation. SeeGuide D5295, Sections 5, 6, and 7, for repairs, surfacepreparation, and evaluation.8.4 Apply primer at the rate of 0.2 to 0.6 L/m20.5 to 1.5gal/100 ft2 or as recommended by system supplier/manufacturer. Allow to dry. Minimum drying time is one houror as recommend
30、ed by manufacturer. Drying time of primervaries with temperature and humidity conditions.8.5 After the primer is applied and has dried, the area mustbe covered with the modified bituminous sheets on the sameday or the substrate must be reprimed.4Available from Factory Mutual Research, 11511 Boston-P
31、rovidence Turnpike,P.O. Box 9102, Norwood, MA 020629102.D7693/D7693M 1528.6 Areas that become contaminated by dust, dirt, or otherforeign material that would interfere with the satisfactoryinstallation or performance of the system shall be cleaned andreprimed.8.7 Seal construction joints with joint
32、filler and sealant thatis compatible with the membrane. Heat weld a minimum150-mm 6-in. wide ply of modified bitumen sheet over jointsor substrate cracks that are 2 mm 0.0625 in. in width orgreater.9. Membrane Installation9.1 General:9.1.1 Prior to installation, it is recommended that drawings,inclu
33、ding plans, be prepared indicating dimensions, layout, andsheet orientation. Plans shall indicate drainage patterns, drains,and other appurtenances. See Guide D5898 for typical details.9.1.2 Drawings shall include details at drains, penetrations,internal and external corners, and other membrane term
34、ina-tions.9.1.3 Do not damage the prepared substrate during installa-tion.9.1.4 Protect adjacent membrane or building componentsfrom damage including newly installed membrane.9.2 Horizontal Sheet Membrane Application:9.2.1 Remove packaging and labels, unroll sheets, andallow the sheet to relax then
35、reroll.9.2.2 Apply sheet perpendicular to the slope starting at thelow point so that laps shed water. Apply all sheets withminimum 75 mm 3 in. side and end laps. Stagger end laps300 mm 12 in. minimum. After the bottom layer is installed,offset succeeding (or subsequent) layers one-half sheet widthfr
36、om previous layer.9.2.3 Heat weld by directing flame or heat at lower quadrantof roll to heat substrate and liquefy bitumen on the sheetwithout overheating. Seal laps while bitumen is molten toachieve a continuous 3 to 6 mm 0.125 to 0.25 in. width ofbituminous flow-out.9.2.4 When installing the syst
37、em, apply heat to the previ-ously installed sheet to promote adhesion to the succeedingsheets.9.2.5 If the end of the sheet is to be overlapped, cut theselvage edge at a 45 angle prior to installing.9.2.6 The surface of the end of the sheet to be overlapped bythe subsequent sheet should be prepared
38、using a heated trowel.9.2.7 Check laps with pointed or round-tip trowel and heatweld where opened or not completely bonded.9.3 Flashing:9.3.1 Prime substrate surfaces to receive modified bitumi-nous sheets and allow to dry. Install a minimum of 2 plies ofmodified bituminous sheets where waterproofin
39、g membraneterminates at walls, penetrations, and curbs.9.3.2 Lap first ply of flashing membrane onto the first ply ofwaterproofing membrane 75 mm 3 in. minimum. Subsequentplies of the waterproofing membrane are lapped onto theprevious layers of flashing membrane 75 mm 3 in. minimum.9.3.3 The subsequ
40、ent plies of flashing membrane are lappedonto the previous layers of the waterproofing membrane 100mm 4 in. minimum. The flashing membrane shall extendvertically 200 mm 8 in. minimum above the finished wearingsurface or grade.9.3.4 Heat the back of the sheet to liquefy bitumen. Pressinto place to ob
41、tain uniform adhesion. Seal laps while bitumenis molten to achieve a continuous 3 to 6 mm 18 to14 in. widthof bitumen flow-out. Check laps with pointed trowel andre-fuse where opened. Seal laps while sheet is still warm bypressing with a heated blunt-nose trowel.9.3.5 Terminate the top of the flashi
42、ng sheet with mechani-cal affixments. Fasteners shall be spaced 150 mm 6 in.maximum on center. Cover flashing membrane top edge withcounterflashing.9.3.6 Apply asphalt primer to drain flanges and metalsurfaces to receive modified bitumen membrane. Extend thebase ply of waterproofing membrane onto th
43、e primed metalflange under the clamping ring. Set all plies in roof cementwithin 150 mm 6 in. of the drain clamping ring. Install aminimum 750 mm 30 in. primed lead flashing in roof cementover the base ply and form to turn down inside of the drainbowl. Consult the manufacturer for alternatives to le
44、ad flashingif the use is not allowed. Install a minimum 900 mm 36 in.modified bituminous stripping sheet over the flashing. Thestripping ply should extend a minimum of 75 mm 3 in.beyond the flashing perimeter. Extend finish ply over thestripping ply and under the clamping ring.9.3.7 PenetrationsRefe
45、rence Guide D5898 for specificdetails.10. Inspection and Repair10.1 Inspect membrane before placement of protectionboard, insulation, or overburden. Repair membrane as required.Patch punctures, tears, unbonded seams, and other deficiencieswith membrane. Patches shall extend 150 mm 6 in. beyondthe de
46、fect.10.2 A flood test in accordance with Guide D5957 or useappropriate electrical conductance method is recommended toidentify leaks prior to placement of protection board andoverburden. Segment the test areas with temporary contain-ment assemblies to achieve the required water depth. Recordleaks a
47、nd repair after membrane has dried and retest.11. Protection11.1 When specified, install protection board in accordancewith Specification D6451. Apply board over horizontal andvertical surfaces to protect from damage.11.2 Install protection board within 24 h after completion ofinspection and flood t
48、est.12. Keywords12.1 heat weld; modified bituminous; waterproofingD7693/D7693M 153ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the v
49、alidity 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 five 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 commi
