tailieunhanh - Designation: C 265 – 99 - Calcium Sulfate in Hydrated Portland Cement Mortar1

This standard is issued under the fixed designation C 265; 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. | Designation C 265 99 AMERICAN SOCIETY FOR TESTING AND MATERIALS 100 Barr Harbor Dr. West Conshohocken PA 19428 Reprinted from the Annual Book of ASTM Standards. Copyright ASTM Standard Test Method for Calcium Sulfate in Hydrated Portland Cement Mortar1 This standard is issued under the fixed d ii r atic n c 265 the number immediately fc llc Wr ig 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. 1. Scope This test method covers the measurement of watersoluble water-extractable SO3 in hardened hydraulic cement mortar. This measurement is assumed to represent unreacted free calcium sulfate remaining in the mortar. The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. Values in SI units were obtained by measurement in SI units or by appropriate conversion using the Rules for Conversion and Rounding given in Practice E 380 of measurements made in other units. 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 3 C 114 Test Methods for Chemical Analysis of Hydraulic Cement2 C 150 Specif carton for Portland Ccmcnt2 C 219 Terminology Relating to Hydraulic Cement2 C 305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency2 C 595M Specification f j- Blended Hydraulic Cements Metric 2 C 778 Specification for Slmn eu d Stmd2 C 1157 Performance Specification for