ASTM_C_1140_-_C_1140M_-_11.pdf

Designation:C1140/C1140M11Standard Practice forPreparing and Testing Specimens from Shotcrete TestPanels1This standard is issued under the fixed designation C1140/C1140M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice covers procedures for preparing test panelsof dry-mix or wet-mix shotcrete and for testing specimenssawed or cored from the panels.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 The text of this standard references notes and footnotesthat provide explanatory materials(excluding those in tablesand figures)that shall not be considered as requirements of thestandard.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:2C42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC78 Test Method for Flexural Strength of Concrete(UsingSimple Beam with Third-Point Loading)C125 Terminology Relating to Concrete and Concrete Ag-gregatesC138/C138M Test Method for Density(Unit Weight),Yield,and Air Content(Gravimetric)of ConcreteC143/C143M Test Method for Slump of Hydraulic-CementConcreteC171 Specification for Sheet Materials for Curing ConcreteC231 Test Method for Air Content of Freshly Mixed Con-crete by the Pressure MethodC457 Test Method for Microscopical Determination of Pa-rameters of the Air-Void System in Hardened ConcreteC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC513 Test Method for Obtaining and Testing Specimens ofHardened Lightweight Insulating Concrete for Compres-sive StrengthC642 Test Method for Density,Absorption,and Voids inHardened ConcreteC995 Test Method for Time of Flow of Fiber-ReinforcedConcrete Through Inverted Slump Cone(Withdrawn2009)3C1018 Test Method for Flexural Toughness and First-CrackStrength of Fiber-Reinforced Concrete(Using Beam WithThird-Point Loading)(Withdrawn 2006)3C1399 Test Method for Obtaining Average Residual-Strength of Fiber-Reinforced Concrete3.Terminology3.1 DefinitionsFor definitions of terms used in thisstandard,refer to Terminology C125.4.Significance and Use4.1 Specimens obtained in accordance with the proceduresection of this practice may be used for preconstruction studiesof shotcrete mixtures,to qualify nozzlemen and equipment,orfor quality control,or compressive or flexural strength testing,during the progress of a project.5.Test Panels5.1 Forms for Panels:5.1.1 The form for receiving the shotcrete shall be eitherwood or steel construction and sufficiently rigid to preventdislodging of the shotcrete through vibration or deformation.The form shall have a minimum width and length of 610 mm1This practice is under the jurisdiction of ASTM Committee C09 on Concreteand Concrete Aggregates and is the direct responsibility of Subcommittee C09.46on Shotcrete.Current edition approved Dec.1,2011.Published January 2012.Originallyapproved in 1989.Last previous edition approved in 2003 as C114003a.DOI:10.1520/C1140_C1140M-11.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 24 in.and a minimum depth of 89 mm 312in.with eithersquare or sloped sides.Larger panels may be desirable forqualifying nozzlemen,equipment,or mixture design.5.1.1.1 Wood FormsWood forms shall have a back madefrom plywood at least 19 mm 34in.thick.Side pieces shallbe made of lumber with a minimum thickness of 38 mm 112in.5.1.1.2 Steel FormsSteel forms shall be made using ma-terial having a minimum thickness of 5 mm 316in.6.Materials6.1 Dry-Mix ProcessThe test mixture shall be of the samematerials and proportions being used or proposed for use in thestructure.6.2 Wet-Mix ProcessThe test mixture shall be of thespecified slump and have the specified air content and unitweight,or,when fibers are used,the specified time of flow,aircontent,and unit wei