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This is a laboratory test method that covers the determination of the time of setting of hydraulic–cement mortars containing additives for shotcrete for comparison with control mixes containing no additives or to compare the performance of shotcrete mixtures which contain additives that produce rapid setting or rapid stiffening of shotcrete.
Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this practice was withdrawn in June 2010 due to a lack of data for the development of a precision and bias statement. Efforts to generate the required data have not been successful.
1.1 This is a laboratory test method that covers the determination of the time of setting of hydraulic-cement mortars containing additives for shotcrete for comparison with control mixes containing no additives or to compare the performance of shotcrete mixtures which contain additives that produce rapid setting or rapid stiffening of shotcrete.
1.2 The values stated in SI units (see IEEE/ASTM SI 10) are the standard.
This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C125 Terminology Relating to Concrete and Concrete Aggregates
C150 Specification for Portland Cement
C185 Test Method for Air Content of Hydraulic Cement Mortar
C266 Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore Needles
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
C778 Specification for Sand
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of Hydraulic Cements
C1141 Specification for Admixtures for Shotcrete
D1193 Specification for Reagent Water