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 4. 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 analytes 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 4Description of Referee Analyses 4.1Referee Analyses 5Qualification for Different Analyses 5.1Certified Reference Materials 5.2Requirements for Qualification Testing 5.3Alternative Analyses 5.4Performance Requirements for Rapid Test Methods 6General 6.1Interferences and Limitations 6.2Apparatus and Materials 6.3Reagents 6.4Sample Preparation 6.5General Procedures 6.6Recommended Order for Reporting Analyses Reference Test Methods
7Insoluble Residue 8Silicon Dioxide 8.2Cements with Insoluble Residue Less Than 1 % 8.3Cements with Insoluble Residue Greater Than 1 % 9Ammonium Hydroxide Group 10Ferric Oxide 11Phosphorus Pentoxide 12Titanium Dioxide 13Zinc Oxide 14Aluminum Oxide 15Calcium Oxide 16Magnesium Oxide 17Sulfur 17.1Sulfur Trioxide 17.2Sulfide 18Loss On Ignition 18.1Portland Cement 18.2Portland Blast-Furnace Slag Cement and Slag Cement 19Sodium and Potassium Oxides 19.1Total Alkalis 19.2Water-Soluble Alkalis 20Manganic Oxide 21Chloride 22Chloroform-Soluble Organic Substances Alternative Test Methods
23Calcium Oxide 24Carbon Dioxide 25Magnesium Oxide 26Loss on Ignition 26.1Portland Blast-Furnace Slag Cement and Slag Cement 27Titanium Dioxide 28Phosphorus Pentoxide 29Manganic Oxide 30Free 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 8.3.2.1 and 16.4.1 for specific caution statements.