ASTM C1352/C1352M-21 PDF
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St ASTM C1352/C1352M-21
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Ст ASTM C1352/C1352M-21
Original standard ASTM C1352/C1352M-21 in PDF full version. Additional info + preview on request
Full title and description
ASTM C1352/C1352M-21 — Standard Test Method for Flexural Modulus of Elasticity of Dimension Stone. This test method describes a laboratory procedure to determine the flexural (Young’s) modulus of elasticity of dimension stone using a simple beam subjected to quarter-point loading. Results provide engineering values for stress and deflection analysis of stone panels and allow comparison of flexural stiffness between stone types and orientations (parallel or perpendicular to rift/bedding).
Abstract
This standard specifies specimen dimensions, apparatus, loading configuration, measurement techniques, and calculation procedures for determining the flexural modulus of elasticity of dimension stone. Testing may be performed on specimens in wet or dry condition and with load applied either parallel or perpendicular to bedding/rift planes. The method uses a simple beam with quarter-point loading and precise deflection measurements to calculate modulus from the stress–strain response.
General information
- Status: Current / Active
- Publication date: Current edition approved September 1, 2021 (designation C1352/C1352M-21; published October 2021).
- Publisher: ASTM International (formerly American Society for Testing and Materials)
- ICS / categories: 91.100.15 (Mineral materials and products) — Dimension stone / construction materials
- Edition / version: C1352/C1352M-21 (2021)
- Number of pages: 4 (concise test method)
Scope
This test method covers the procedure for determining the flexural modulus of elasticity of dimension stone using a simple beam with quarter-point loading. It applies to tests with loading applied parallel or perpendicular to bedding/rift, for wet or dry specimens as specified by the test specifier. SI and inch-pound units are presented as separate, independent systems and must not be interchanged.
Key topics and requirements
- Test configuration: simple beam with quarter-point loading (four-point bending) to produce a constant moment region.
- Specimen dimensions (typical): 4 in (100 mm) wide × 1.25 in (30 mm) thick × 15 in (350 mm) long (span typically 12.5 in / 300 mm); sides at right angles to top/bottom; fine abrasive finish on planes perpendicular to loading.
- Measurement: mid-span and support deflections measured with deflection gages capable of reading 0.0001 in (0.002 mm).
- Units: SI and inch‑pound values are each normative and must be used independently (do not combine systems).
- Specimen condition: tests may be run on wet or dry specimens; the specifier decides which condition(s) apply.
- Calculation: modulus of elasticity (Young’s modulus) calculated from measured loads and deflections in the constant moment region per the formulae in the method.
- Significance: provides engineering values for stress/deflection analysis and comparison of flexural stiffness between stones and orientations.
- Apparatus and calibration: testing machine and force-measurement practices per ASTM Practices E4; quarter-point loading blocks and support details required to avoid eccentricity.
Typical use and users
Used by materials testing laboratories, stone fabricators, civil and structural engineers, architects, specifiers, quarry operators, and standards/test committees. Typical applications include structural and cladding panel design, comparative evaluation of candidate stones, quality control, and research into anisotropy (bedding/rift direction) and moisture effects on stone stiffness.
Related standards
Commonly referenced and complementary ASTM documents include: C119 (Terminology Relating to Dimension Stone), C880 (Test Method for Flexural Strength of Dimension Stone), C1799 (Guide to Dimension Stone Test Specimen Sampling and Preparation), E4 (Practices for Force Calibration and Verification of Testing Machines), and relevant dimension-stone specifications such as C616/C616M. These documents cover terminology, specimen preparation, strength testing, and equipment calibration related to C1352/C1352M.
Keywords
dimension stone; flexural modulus; Young’s modulus; flexure; four‑point bending; quarter‑point loading; stone testing; wet/dry specimens; deflection gages; modulus of elasticity.
FAQ
Q: What is this standard?
A: ASTM C1352/C1352M-21 is a Standard Test Method that defines how to measure the flexural modulus of elasticity (Young’s modulus) of dimension stone using a simple beam with quarter-point (four-point) loading.
Q: What does it cover?
A: It covers specimen dimensions and preparation, apparatus and loading configuration, deflection measurement requirements, calculation procedures, and allowable specimen conditions (wet or dry). It also specifies that SI and inch‑pound units are independent.
Q: Who typically uses it?
A: Materials testing laboratories, stone fabricators, quarry operators, architects, structural engineers, and project specifiers use this test method for design information, quality control, and comparative evaluations of stone stiffness.
Q: Is it current or superseded?
A: The current edition is C1352/C1352M-21 (2021). This edition was approved September 1, 2021 and is the active version for that designation.
Q: Is it part of a series?
A: It belongs to ASTM Committee C18 on Dimension Stone and is used alongside other C18 test methods and guides (for example C880 for flexural strength and C1799 for specimen sampling/preparation). It references related practices such as E4 for equipment calibration.
Q: What are the key keywords?
A: Dimension stone; flexural modulus of elasticity; Young’s modulus; quarter-point loading; four-point bending; deflection measurement; stone testing; wet/dry specimens.