ASTM D4258-2005(2017) Standard Practice for Surface Cleaning Concrete for Coating《涂装用表面清洁混凝土的标准实施规程》.pdf

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1、Designation: D4258 05 (Reapproved 2017)Standard Practice forSurface Cleaning Concrete for Coating1This standard is issued under the fixed designation D4258; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.

2、 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 practice includes surface cleaning of concrete toremove grease, dirt, and loose material prior to the applicationof coatings. P

3、rocedures include broom cleaning, vacuumcleaning, air blast cleaning, water cleaning, detergent watercleaning, and steam cleaning.1.2 This practice is not intended to alter the surface profileof the concrete but to clean the surface.1.3 The values stated in inch-pound units are to be regardedas stan

4、dard. No other units of measurement are included in thisstandard.1.4 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 safety, health, and environmental practices and de

5、ter-mine the applicability of regulatory limitations prior to use.For specific hazard statements, see Section 5.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of

6、International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D4259 Practice for Abrading ConcreteD4260 Practice for Liquid and Gelled Acid Etching ofConcreteD4262 Test Method for pH o

7、f Chemically Cleaned or EtchedConcrete SurfacesD4263 Test Method for Indicating Moisture in Concrete bythe Plastic Sheet MethodD4285 Test Method for Indicating Oil or Water in Com-pressed Air2.2 Other Standard:ACI-308 Guide to Curing Concrete33. Summary of Practice3.1 Surface cleaning is intended to

8、 provide a clean,contamination-free surface without removing concrete fromintact, sound surfaces.3.2 Acceptable surfaces shall be free of oil, grease, looselyadhering concrete, and other contamination. Fins and projec-tions shall be corrected prior to surface cleaning.3.3 Air, water cleaning, scrubb

9、ing, sweeping, or vacuumingare acceptable cleaning methods. Cleaning agents may also beused to remove oil and grease spots followed by a fresh waterrinse.3.4 Any one or a combination of the listed cleaning proce-dures may be used to achieve acceptably cleaned surfaces.4. Significance and Use4.1 Surf

10、ace cleaning is used to prepare concrete surfaces forapplying coatings intended for light-duty service.4.2 Use of this practice alone is not intended where protec-tive systems will be used for continuous or intermittentimmersion, mechanical loading, or for protective systemsneeding optimum bond for

11、satisfactory performance (seePractices D4259 and D4260).5. Hazards5.1 New concrete shall be cured according to ACI-308 andsufficient additional time allowed for drying.5.2 Moisture in the concrete may be detrimental to coatingadhesion. Moisture content shall be in compliance with coatingmanufacturer

12、s recommendation (see Test Method D4263).5.3 Concrete cure compounds, form release materials, orconcrete hardeners not compatible with the coating mayrequire removal by other surface preparation methods as inPractices D4259 and D4260.1This practice is under the jurisdiction of ASTM Committee D33 on

13、ProtectiveCoating and Lining Work for Power Generation Facilities and is the directresponsibility of Subcommittee D33.05 on Application and Surface Preparation.Current edition approved Sept. 1, 2017. Published September 2017. Originallyapproved in 1983. Last previous edition approved in 2012 as D425

14、8 05 (2012).DOI: 10.1520/D4258-05R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American

15、 Concrete Institute (ACI), P.O. Box 9094, FarmingtonHills, MI 48333-9094, http:/www.concrete.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized pr

16、inciples 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.16. Procedures6.1 Broom Cleaning:6.1.1 This procedure is intended to remo

17、ve most surfacedust and other loosely adherent solid contaminants.6.1.2 Broom cleaning shall consist of sweeping the surfacewith a clean industrial stiff-bristled broom or similar device.Sweepings shall be removed from the immediate work area.6.1.3 Broom-cleaned surfaces require additional cleaningu

18、sing one or more of the surface preparation proceduresspecified in 6.2 6.6.6.2 Vacuum Cleaning:6.2.1 This cleaning procedure is intended to remove surfacedust and other debris.6.2.2 Vacuum cleaning shall consist of vacuuming thesurface with a heavy-duty type industrial vacuum to provide anessentiall

19、y dust-free surface.6.3 Air Blast Cleaning:6.3.1 This procedure is intended to remove debris, dust, dirt,loosely adherent laitance, and concrete from walls and ceilingsand to provide an essentially sound dust-free surface.6.3.2 Air blast cleaning shall consist of cleaning the surfacewith a compresse

20、d air stream at 80 to 100 psi through a blastingnozzle held approximately 2 ft from the surface.6.3.3 The air stream shall be free of oil. This may be verifiedusing Test Method D4285.6.3.4 Surface cleanliness is dependent upon carrying offairborne dust before it is redeposited. Vacuum cleaning may b

21、erequired to remove redeposited dust.6.4 Water Cleaning:6.4.1 This procedure is intended to remove dust, dirt, andwater-soluble surface contaminants.6.4.2 Water cleaning shall consist of cleaning the surfacewith a stream of clean potable water having sufficient pressureto remove dust, dirt, and loos

22、e material. When necessary, handscrub with a stiff-bristled brush.6.4.3 Prior to water cleaning, provisions shall be made forthe removal of wash water and contaminants generated by thiscleaning method.6.4.4 The cleaned surface may be tested for moisturecontent in accordance with Test Method D4263 pr

23、ior toapplying coatings.6.5 Detergent Water Cleaning:6.5.1 This procedure is intended to remove water-solublesurface contaminants and oils, grease, and other emulsifiablematerials on the surface.6.5.2 Detergent water cleaning shall consist of scraping offheavy deposits of grease or oil and cleaning

24、the surface with astiff-bristled brush using an aqueous solution of detergent ornonsolvent emulsifier. Immediately after treatment, before thesurface dries, residues of the cleaning agent shall be removedby thoroughly flushing the surface with clean potable water.Repeat flushing until the pH of the

25、surface water meets theacceptance criteria of Test Method D4262.6.5.3 Trisodium phosphate at not less than 4 oz/gal, orproprietary products intended for cleaning concrete, may beused following manufacturers instructions. The effectiveness oftrisodium phosphate may be improved with the use of hotwate

26、r.6.5.4 Repeat 6.5.2 until water does not bead on the surfaces.6.5.5 Prior to detergent water washing, provisions shall bemade for the removal of wash water and contaminants gener-ated by this cleaning method.6.5.6 The cleaned surface may be tested for moisturecontent in accordance with Test Method

27、D4263.6.6 Steam Cleaning:6.6.1 This cleaning procedure is similar to detergent waterwashing, but is more effective for the removal of heavydeposits of grease and oil.6.6.2 Steam cleaning shall consist of cleaning the surfacewith a jet of high-pressure steam sufficient to remove contami-nants.6.6.3 D

28、etergents or nonsolvent emulsifying agents intendedfor use with steam cleaning equipment may be added whererequired for removal of oil and grease.6.6.4 When detergents or other emulsifying agents are used,after cleaning and before the surface dries, the surface shall bethoroughly flushed with potabl

29、e water. Repeat flushing may benecessary to remove cleaning residues.6.6.5 The surfaces cleaned with detergent or nonsolventemulsifying agents shall be tested for pH in accordance withTest Method D4262 and may be tested for moisture content inaccordance with Test Method D4263 prior to applying coat-

30、ings.6.6.6 Prior to steam cleaning, provisions shall be made forthe removal of water and contaminants generated by thiscleaning method.7. Inspection7.1 Visually examine the prepared surface for the presenceof debris, dust, dirt, oil, grease, loosely adherent concrete, andother contaminants.7.2 Test

31、surfaces cleaned with detergent or nonsolventemulsifying agents for pH following Test Method D4262.7.3 Moisture content may be determined following TestMethod D4263.8. Acceptance8.1 Acceptable surfaces shall be free of oil, grease, looselyadhering concrete, and other contamination.9. Keywords9.1 con

32、crete; liquid/gelled acid; surface cleaning; surfaceprofileD4258 05 (2017)2ASTM 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 validity

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