1、Designation:C151514Standard Guide forCleaning of Exterior Dimension Stone,Vertical AndHorizontal Surfaces,New or Existing1This standard is issued under the fixed designation C1515;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear of last revision.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 guide describes materials and procedures whichmay be used to clean dimension stone exteriors as well as thecond
3、itions under which they may be used.It is intended to aidowners,maintenance supervisors and building managers,ar-chitects and engineers,and contractors in cleaning verticalexterior dimension stone on commercial,residential and insti-tutional structures.This guide may also be helpful to those whowish
4、 to clean stone masonry on bridges,retaining walls,ramps,and plazas,and free-standing stone objects such as statuary,memorials and grave markers.1.2 This guide relates primarily,to routine maintenance ofthe surface finish of exterior dimension stone.The techniquesnoted herein may not be appropriate
5、or cost effective withregard to restoration of disfigured,severely soiled or stainedstonework,or of stonework of particular historic importance.In cases where staining occurs on surfaces which have cultural,civic,historic or architectural significance,consultation with aspecialist is recommended.1.3
6、 The user of this guide should also obtain and have onfile at both the job site and the office Material Safety DataSheets(MSDS)describing the nature of all chemical productsutilized during the cleaning process.1.4 A file of literature from the manufacturers of all prod-ucts involved within the scope
7、 of each project should beavailable for reference.1.5 These procedures are not intended for interior stone-work.1.6 This guide offers an organized collection of informationor a series of options and does not recommend a specific courseof action.This document cannot replace education or experi-ence a
8、nd should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument
9、be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.1.7 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses ar
10、e mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.8 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 and
11、 health practices and determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2C119 Terminology Relating to Dimension StoneC503 Specification for Marble Dimension StoneE1971 Guide for Stewardship for the Cleaning of Commer-cial and Institutional
12、Buildings3.Terminology3.1 Terms used in this guide are defined in TerminologyC119.3.2 Definitions of Terms Specific to This Standard:3.2.1 exterior dimension stonea general term for a stoneinstalled in a location where temperature,moisture and wind-carried contaminants are regulated solely or primar
13、ily by theforces of nature.3.2.2 qualified contractora person,persons or organiza-tions having expertise in stone cleaning,proved by docu-mented projects demonstrating successful work,consistency inbusiness or consultancy for a period of five or more years.1This guide is under the jurisdiction of AS
14、TM Committee C18 on DimensionStone and is the direct responsibility of Subcommittee C18.07 on EnvironmentalProperties,Behavior,and Cleaning.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 2001.Last previous edition approved in 2013 as C1515-13.DOI:10.1520/C1515-14.2
15、For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West
16、 Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 Exterior dimension stone is chosen for use in contem-porary architecture in part because of its aesthetic appeal.Aesthetics can be significantly diminished when dirt,grime,flyash,algae and other contaminants collect on the surface ofstone.4.2 This guide is intended to assist those who wish topreserve the original appearance of a new structure or to returna stone-clad building to its original color and appearance.4.2.1 Note that