ASTM D5107-2003(2007) Standard Practice for Preparatory Surface Cleaning of Architectural Sandstone《建筑用砂岩表面预清理的标准实施规范》.pdf
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1、Designation: D 5107 03 (Reapproved 2007)Standard Practice forPreparatory Surface Cleaning of Architectural Sandstone1This standard is issued under the fixed designation D 5107; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers non-abrasive surface cleaning ofarchitectural sandstone to remove grease, dirt, loose mate
3、rial,and surface deposits such as soot, fly ash, hydrocarbonresidues, and algae and other biological growth in preparationfor the application of water repellent coatings. Proceduresinclude broom cleaning, vacuum cleaning, air blast cleaning,water cleaning (and detergent water cleaning), and chemical
4、cleaning.1.2 LimitationsThis practice is intended to clean architec-tural sandstone without damaging it or altering the surfaceprofile. These procedures are not intended for interior stone-work. Where work on surfaces of artistic, architectural, cul-tural, or historic significance is being considere
5、d, guidancefrom specialists should be sought.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility
6、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. For specific hazardstatements, see Section 4.2. Referenced Documents2.1 ASTM Standards:2C119 Terminology Relating to Dimension StoneD 4262 Test
7、Method for pH of Chemically Cleaned orEtched Concrete SurfacesD 4263 Test Method for Indicating Moisture in Concrete bythe Plastic Sheet MethodD 4285 Test Method for Indicating Oil or Water in Com-pressed Air3. Significance and Use3.1 Surface cleaning is necessary to prepare architecturalsandstone s
8、urfaces for application of coatings intended forwater repellent protection. Surface cleaning of the sandstonesubstrate helps to ensure proper adhesion of the coating.3.2 Use of procedures described in this practice may not beadequate where protective systems will be used for continuousor intermitten
9、t immersion or mechanical loading.4. Hazards4.1 Moisture in the architectural sandstone may be detri-mental to coating adhesion or (in some cases) cure. Moisturecontent shall be in compliance with coating manufacturersrecommendation. See also Test Method D 4263.4.2 Localized staining (for example ef
10、florescence and me-tallic staining) and previously applied coatings or preservativetreatments not compatible with the treatment may requireremoval by other surface preparation methods.4.3 Water cleaning, detergent water cleaning, and chemicalcleaning should not be performed at temperatures below 40F
11、.4.4 Many chemical cleaning products contain acids andshould be handled according to manufacturers recommenda-tions. Use and disposal of materials should conform to estab-lished federal, state, local, and project requirements.4.5 If pressure washing equipment is employed for watercleaning or for flu
12、shing the surface with detergent watercleaning or chemical cleaning, the minimum effective pressureshould be used. Avoid excessive pressures that could damagethe sandstone substrate.5. Procedure5.1 Air blast, water, scrubbing, sweeping, or vacuuming areacceptable cleaning methods. Chemical cleaning
13、agents maybe used to remove surface deposits such as soot, fly ash, andhydrocarbon residues not removed by any of the above1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.47 o
14、n Concrete, Stone and Masonry Treatments.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1990. Last previous edition approved in 2003 as D 5107 - 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servicea
15、stm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.methods. Chemical cleaning should be preceded and followedb
16、y a thorough fresh water rinse.5.2 Existing conditions of the substrate will determine theselection of appropriate procedure(s). Prior to the initiation ofcleaning, small test areas should be cleaned in inconspicuousareas by the selected procedure to determine effectiveness.5.3 The six types of clea
17、ning procedures are describedbelow. One or more of the procedures may be required toremove contaminants from the sandstone surface:5.3.1 Broom CleaningRemoves most loosely adherentsolid contaminants.5.3.1.1 Working from top to bottom, sweep the surface witha clean industrial stiff-bristled broom or
18、similar device. Re-move sweepings from the immediate work area.5.3.1.2 Clean broom-cleaned surfaces again, using one ormore of the surface preparation procedures specified in 5.3.2through 5.3.6.5.3.2 Vacuum CleaningRemoves surface dust and otherdebris.5.3.2.1 Vacuum the surface with a heavy-duty typ
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