1、Designation:D570395(Reapproved 2022)1Standard Practice forPreparatory Surface Cleaning for Clay Brick Masonry1This standard is issued under the fixed designation D5703;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTESubsections 1.4,6.4.1.1,and 6.4.1.2 were updated editorially in January 2022.1.Scope1.1 This practice covers non-abrasive surface clea
3、ning ofclay brick masonry to remove surface contaminants such asdirt,grease,loose material,soot,fly ash,hydrocarbon residues,algae,etc.in preparation for the application of water repellentcoatings without damaging or altering the surface appearanceof the clay brick masonry.1.2 Procedures included in
4、 this practice are water cleaning,detergent water cleaning,pressurized water cleaning,steamcleaning,and acid cleaning.It is not intended for the cleaningof newly constructed brick masonry.Use of procedures de-scribed in this practice may not be appropriate where thesurface is of a historical nature.
5、1.3 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.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
6、 appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific hazard information see Section 5,6.4.1.1,and6.4.1.2.1.5 This international standard was developed in accor-dance with internationally recognized principles on
7、standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C43 Terminology of Structural Clay Products(W
8、ithdrawn2009)33.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 slurry,na coating of finely ground clay,coloringagents,and water applied to the surface of clay brick during themanufacturing process prior to firing of the unit.3.1.1.1 DiscussionSand may also be added to the slurry
9、.3.2 For definitions of other terms found in this practice,refer to Terminology C43.4.Significance and Use4.1 Surface cleaning is necessary to prepare clay brickmasonry surfaces for application of coatings intended for waterrepellent protection.Surface cleaning helps to ensure properadhesion or even
10、 penetration of the coating and to preventunintended sealing-in of stains.4.2 This practice addresses surface cleaning only.Otherpreparation or remedial repairs,such as repointing the masonryor replacing of units,may be necessary and must be completedprior to application of the water repellent treat
11、ment.5.Hazards5.1 Localized stains(for example efflorescence and metallicstains)and previously applied coatings not compatible with thewater repellent treatment may require removal by other surfacecleaning methods.Failure to remove localized stains prior toapplication of the treatment may prevent la
12、ter removal of thestain.NOTE1Methods for removing localized stains,including use ofnon-proprietary chemical compounds,can be found in several references,some of which are listed in Appendix X1.1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and A
13、pplications and is the direct responsibility ofSubcommittee D01.47 on Concrete,Stone and Masonry Treatments.Current edition approved Jan.1,2022.Published January 2022.Originallyapproved in 1995.Last previous edition approved in 2013 as D5703 95(2013).DOI:10.1520/D5703-95R22E01.2For referenced ASTM s
14、tandards,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.3The last approved version of this historical standard is referenced onwww.astm.org.Copy
15、right 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 principles on standardization established in the Decision on Principles for theDevelopment of International
16、Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.15.2 Do not perform water cleaning,detergent watercleaning,pressurized water cleaning,and acid cleaning attemperatures below 40 F.5.3 Handle proprietary chemical cleaning products accord-ing to manufacturers recommendations.Conform to estab-lished federal,state,local and project requirements for use anddisposal of materials.Provisions for collecting and removingcleaning effluent
