This standard is issued under the fixed designation C 91; the number immediately following the designation indicates the year of 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 (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. | Designation C 91 99 Standard Specification for Masonry Cement1 This standard is issued under the fixed d ii r atic n c 91 the number immediately following the designation indicates the year of 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 e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope This speciricaúon covers three types oT masoony cement for use where mortar for masonry is required. The values stated in SI units are to be regarded as the standard. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion of measurements made in other units using the Rules for Conversion and Rounding given in IEEE AsTm si 10. The text of this standard refers to notes and footnotes which provide explanatory material. These notes and footnotes excluding those in tables and fl slum noobe connidcrcd as requirements of the standard. The following safety hazards caveat pertains only to Sections 19 and 20 of this specification. 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 ASTM Standards C 109 C 109M Test Method for Compressive Strength of Hydraulic Cement Mortars Using 2-in. or 50-mm Cube Specimens 2 C 114 Test Methods for Chemical Analysis of Hydraulic Cement2 C 151 Test Method for Autoclave Expansion of Portland Cement2 C 183 Practice for Sampling and the Amount of Testing of Hydraulic Cement2 C 185 Test Method for Air Content of Hydraulic Cement Mortar2 C 187 Test Method for Normal Consistency of Hydraulic Cement2 C 188 Test Method for Density of .
