ASTM_C_1803_-_15.pdf

Designation:C180315Standard Guide forAbrasion Resistance of Mortar Surfaces Using a RotaryPlatform Abraser1This standard is issued under the fixed designation C1803;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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 is intended to assist in establishing proce-dures for determining the relative abrasion resistance of treatedor untreated mortar surfaces.1.2 This guide utilizes the rotary platform abraser,whichgenerates a combination of rolling and rubbing to cause wearto the specimen surface.Wear can be quantified as cycles to aspecific end-point.Other commonly used evaluations arepresented in Appendix X1 and include mass loss,wear index,or volume loss.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.NOTE1Other procedures used to measure abrasion resistance ofconcrete surfaces include Test Methods C418,C779/C779M,C944/C944M,and C1138M.Other methods that reference the rotary platformabraser and may be of interest include Specification C744 and TestMethods C1353,D4060 and F510.1.4 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C33/C33M Specification for Concrete AggregatesC109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C125 Terminology Relating to Concrete and Concrete Ag-gregatesC418 Test Method for Abrasion Resistance of Concrete bySandblastingC744 Specification for Prefaced Concrete and Calcium Sili-cate Masonry UnitsC779/C779M Test Method for Abrasion Resistance of Hori-zontal Concrete SurfacesC944/C944M Test Method for Abrasion Resistance of Con-crete or Mortar Surfaces by the Rotating-Cutter MethodC1138M Test Method for Abrasion Resistance of Concrete(Underwater Method)C1353 Test Method for Abrasion Resistance of DimensionStone Subjected to Foot Traffic Using a Rotary PlatformAbraserD4060 Test Method for Abrasion Resistance of OrganicCoatings by the Taber AbraserD6532 Test Method for Evaluation of the Effect of ClearWater Repellent Treatments on Water Absorption of Hy-draulic Cement Mortar SpecimensF510 Test Method for Resistance to Abrasion of ResilientFloor Coverings Using an Abrader with a Grit FeedMethodG195 Guide for Conducting Wear Tests Using a RotaryPlatform Abraser3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this guide,refer toTerminology C125.3.2 Definitions of Terms Specific to This Guide:3.2.1 abraser,nan instrument designed to determine theresistance of surfaces to abrasion,also referred to as an abrader.3.2.1.1 DiscussionFor the rotary platform abraser used inthis guide,abrasion is produced by a combined action ofrolling and rubbing.3.2.2 abrasion cycle,none complete rotation of the speci-men turntable platform.3.2.3 resurface,vthe procedure of refreshing the runningsurface of an abrasive wheel.4.Summary of Guide4.1 Abrasion resistance of a treated or untreated mortarsurface is determined by subjecting a specimen to rotaryrubbing action under controlled conditions of pressure andabrasive action.The test specimen,mounted on a turntable1This guide is under the jurisdiction of ASTM Committee C09 on Concrete andConcrete Aggregates and is the direct responsibility of Subcommittee C09.62 onAbrasion Testing.Current edition approved July 1,2015.Published September 2015.DOI:10.1520/C1803-15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 platform,turns on a vertical axis,against the sliding rotation oftwo abrading wheels.One abrading wheel rubs the specimenoutward toward the periphery and the other,inward toward thecenter while a vacuum system removes wear debris generatedduring the test.The resulting abrasion marks form a pattern ofcrossed arcs in a circular wear path that is 12.7 mm wide,whose inner diameter is located 31.75 mm from the center ofthe specimen,and covers an area of approximately 30 cm2.Unless otherwise agreed upon between the interested parties,specimens are subjected to 200 cycles or 1000 cycles with theabrading wheels being cleaned with a stiff bristle brush afterevery 50 cycles.The effectiveness of a treatment involvescomparing treated specimens to control(untreated)specimensusing the same mortar,method of pr