tailieunhanh - TC ASTM C186 - 98

Phương pháp thử tiêu chuẩn về nhiệt của Hydrat hóa xi măng đông trong nước | DeS 9nat On C186 - 98 Standard Test Method for Heat of Hydration of Hydraulic Cement1 This standard is issued under the fixed designation C 186 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. 1. Scope This test method covers the determination of the heat of hydration of a hydraulic cement by measuring the heat of solution of the dry cement and the heat of solution of a separate portion of the cement that has been partially hydrated for 7 and for 28 days the difference between these values being the heat of hydration for the respective hydrating period. The results of this test method may be inaccurate if some of the components of the hydraulic cement are insoluble in the nitric acid hydrofluoric acid soumon. 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 shall be obtained by measurement in SI units or by appropriate conversion using the Rules for Conversion and Rounding given in Standard IEEE ASTM SI 10 or 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 or regulatory limitations prior to use. 2. Referenced Documents ASTM Standards C 109 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 670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials3 C 1005 Speciricalion for Weights and Weiglting Devices for Use in the Physical .