ASTM C1721-22 PDF

SIGNIFICANCE AND USE 4.1 Petrographic examinations are made for the following purposes: 4.1.1 Determine the physical and chemical characteristics (mineralogy, texture, and composition) of the stone specimen that may be observed by petrographic methods and that have a bearing on the performance of the material in its intended use. 4.1.2 Describe and classify the minerals of the specimen. 4.1.3 Classify the stone both commercially and geologically based on Terminology C119, recognizing the differences in nomenclature; and based on the following standards, as appropriate: Specification C406 Specification C503 Specification C568 Specification C615 Specification C616 Specification C629 Specification C1526 Specification C1527 4.1.4 Determine the relative amounts of the minerals of the specimen and constituents that have a bearing on the performance of the material in its intended use. 4.1.5 Compare characteristics of the stone with specimens from one or more sources, for which test data or performance records are available. 4.2 The petrographer should be told in as much detail as necessary, the purposes and objectives of the examination, the kind of information needed, and the extent of examination desired. 4.2.1 Pertinent background information, including results of prior testing, such as physical and mechanical testing, should be made available. The petrographer’s advice and judgment should be sought regarding the extent of the examination. Available physical and mechanical testing may include the following: Test Methods C97 Test Method C99 Test Method C170 Test Method C880 Test Methods C120 Test Method C121 Test Method C241 Test Method C1353 Test Method C217 4.3 This guide may form the basis for establishing arrangements between a purchaser of consulting petrographic service and the petrographer. In such a case, the purchaser and the consultant should together determine the kind, extent, and objectives of the examination and analy... SCOPE 1.1 This guide outlines procedures for the petrographic examination of stone specimen material proposed for use as dimension stone used in construction. 1.2 This guide outlines the extent to which petrographic techniques should be used, the selection of petrographic related properties that should be looked for, and the manner in which such techniques may be employed in the examination of dimension stone. 1.3 The rock and mineral names given in Terminology C119 should be used, insofar as they are appropriate, in reports prepared in accordance with this guide. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.