ASTM C1721-22 PDF
Standard Guide for Petrographic Examination of Dimension Stone
Standard Guide for Petrographic Examination of Dimension Stone
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 15 апреля 2022 г.
- Издание:
- C1721
- ICS:
- 07.060
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.
Abstract
Overview
ASTM C1721-22: Standard Guide for Petrographic Examination of Dimension Stone establishes a framework for the petrographic analysis of stone materials intended for use as dimension stone in construction. This guide outlines the recommended procedures, extent of analysis, and interpretation needed to assess the mineralogical, physical, and chemical properties that influence the performance and suitability of stone products. Recognized worldwide, this standard supports the evaluation and comparative selection of dimension stone by both commercial and geological classification, thereby aiding in specification, quality control, and risk mitigation for construction and architectural projects.
Key Topics
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Purpose of Petrographic Examination: Petrographic investigation determines mineralogy, texture, composition, and other attributes of stone specimens that have a significant impact on the stone's durability and aesthetic appeal.
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Classification and Description: Stones are classified and described commercial and geologically using established nomenclature, primarily referencing ASTM Terminology C119 and related specifications.
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Comparative Analysis: The guide enables comparison between specimen characteristics and materials with known test data or performance records, supporting informed decision-making.
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Recording and Reporting: The guide provides detailed requirements for documentation, including purpose, test procedures, data analysis, and qualitative and quantitative assessments of features affecting stone performance.
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Assessment Focus Areas:
- Mineral content and proportion
- Weathered or altered constituents
- Chemically or physically unstable materials
- Structural features such as cleavages, foliation, and bedding
- Surface characteristics and susceptibility to staining, color change, or deterioration from environmental exposure
Applications
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Construction and Architecture: Engineers, architects, and builders use petrographic examination to evaluate the integrity, durability, and aesthetic properties of building stone, ensuring suitability for cladding, paving, flooring, and decorative uses.
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Quality Assurance: Testing laboratories and consultants employ ASTM C1721-22 to verify that supplied dimension stone materials meet project and industry requirements.
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Material Sourcing and Selection: Quarry operators, suppliers, and purchasers utilize the guide to classify stone type, assess variation within quarry sites, identify potential performance issues, and support procurement decisions.
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Failure Analysis and Historic Preservation: The guide is invaluable for diagnosing the cause of deterioration in existing stone installations and for informing restoration strategies.
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Regulatory and Specification Compliance: Provides standard methodology referenced by contracts, project specifications, and compliance documents.
Related Standards
ASTM C1721-22 is part of a broader suite of ASTM standards for stone evaluation and testing, often used in conjunction with:
- ASTM C406 - Specification for Roofing Slate
- ASTM C503 - Specification for Marble Dimension Stone
- ASTM C568 - Specification for Limestone Dimension Stone
- ASTM C615 - Specification for Granite Dimension Stone
- ASTM C616 - Specification for Quartz-Based Dimension Stone
- ASTM C629 - Specification for Slate Dimension Stone
- ASTM C1526 - Specification for Serpentine Dimension Stone
- ASTM C1527 - Specification for Travertine Dimension Stone
- ASTM C97 - Test Methods for Absorption and Bulk Specific Gravity of Dimension Stone
- ASTM C99 - Test Method for Modulus of Rupture of Dimension Stone
- ASTM C170 - Test Method for Compressive Strength of Dimension Stone
- ASTM C880 - Test Method for Flexural Strength of Dimension Stone
- ASTM C120, C121, C241, C1353, C217 - Various test methods for evaluating physical and mechanical properties
Summary
Adhering to ASTM C1721-22 ensures a thorough, standardized approach to the petrographic examination of dimension stone, supporting the reliable assessment of performance characteristics critical to construction and design. By fostering consistent practices and documentation, this guide helps stakeholders mitigate risk and make informed choices about stone selection and use throughout the life cycle of architectural and infrastructural projects.
Технические детали
- Технический комитет
- C18 - Dimension Stone
- SKU
- ASTM C1721-22
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