Реферат

These test methods cover the chemical analyses of hydraulic cements. Specific chemical test methods are grouped as reference test methods and alternative test methods. The reference test methods are long accepted classical chemical test methods which provide a reasonably well-integrated basic scheme of analysis for hydraulic cements and are also required for referee analysis in those cases where conformance to chemical specification requirements are questioned. Apparatus and materials for the test method include balance, weights, glassware and laboratory containers, desiccators, filter paper, crucibles, and muffle furnace. Standard reagents for the test method shall be used within the limits of the specification. These reagents shall include purity agents, water, repackaged reagents, concentrated acids and ammonium hydroxide, nonstandardized solutions, and indicator solutions. Sample preparation and general test procedures shall be followed according to the specification. General procedures include sample weighing, taring of crucibles, weighing of ignited residues, volatilization of platinum, chemical analyses, and calculation. Reporting of analyses shall be of the following order: major components, minor components, and separate determinations. Reference test methods and procedures include determination of insoluble residue, silicon dioxide, ammonium hydroxide group, ferric oxide, phosphorus pentoxide, titanium dioxide, zinc oxide, aluminum oxide, calcium oxide, magnesium oxide, sulfur, loss on ignition, sodium and potassium oxides, manganic oxide, chloride, chloroform-soluble organic substances. Alternative test methods and procedures include determination of calcium oxide, calcium dioxide, magnesium oxide, loss on ignition, titanium dioxide, phosphorus pentoxide, manganic oxide, and free calcium oxide. The standardization used for qualification and for analysis of each constituent shall be determined by valid curve-fitting procedures.

Область применения

1.1 These test methods cover the chemical analyses of hydraulic cements. Any test methods of demonstrated acceptable precision and bias may be used for analysis of hydraulic cements, including analyses for referee and certification purposes, as explained in Section 3. Specific chemical test methods are provided for ease of reference for those desiring to use them. They are grouped as Reference Test Methods and Alternative Test Methods. The reference test methods are long accepted classical chemical test methods which provide a reasonably well-integrated basic scheme of analysis for hydraulic cements. The alternative test methods generally provide individual determination of specific components and may be used alone or as alternates and determinations within the basic scheme at the option of the analyst and as indicated in the individual method.

1.2 Contents:

SectionSubject
2Referenced Documents 3Number of Determinations and Permissible Variations 3.1Referee Analyses 3.2Optional Analyses 3.3Performance Requirements for Rapid Test Methods 3.4Precision and Bias 4General 4.1Interferences and Limitations 4.2Apparatus and Materials 4.3Reagents 4.4Sample Preparation 4.5General Procedures 4.6Recommended Order for Reporting Analyses Reference Test Methods
5Insoluble Residue 6Silicon Dioxide 6.2Cements with Insoluble Residue Less Than 1 % 6.3Cements with Insoluble Residue Greater Than 1 % 7Ammonium Hydroxide Group 8Ferric Oxide 9Phosphorus Pentoxide 10Titanium Dioxide 11Zinc Oxide 12Aluminum Oxide 13Calcium Oxide 14Magnesium Oxide 15Sulfur 15.1Sulfur Trioxide 15.2Sulfide 16Loss On Ignition 16.1Portland Cement 16.2Portland Blast-Furnace Slag Cement and Slag Cement 17Sodium and Potassium Oxides 17.1Total Alkalis 17.2Water-Soluble Alkalis 18Manganic Oxide 19Chloride 20Chloroform-Soluble Organic Substances Alternative Test Methods
21Calcium Oxide 22Carbon Dioxide 23Magnesium Oxide 24Loss on Ignition 24.1Portland Blast-Furnace Slag Cement and Slag Cement 25Titanium Dioxide 26Phosphorus Pentoxide 27Manganic Oxide 28Free Calcium Oxide Appendices Title
Appendix X1Example of Determination of Equivalence Point
for the Chloride Determination Appendix X2CO₂ Determinations in Hydraulic Cements

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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. See 6.3.2.1 and 14.4.1 for specific caution statements.