ASTM C1335-23 PDF

Overview

ASTM C1335-23: Standard Test Method for Measuring Non-Fibrous Content of Man-Made Rock and Slag Mineral Fiber Insulation provides a reliable procedure for determining the non-fibrous (shot) content in mineral fiber insulation materials. The standard enables clear distinction between fiberized and non-fiberized (shot) components of man-made rock and slag mineral fiber insulation using a dry sieve analysis. Understanding shot content is crucial, as non-fibrous particles do not contribute to the insulating properties and can impact performance specifications.

Key Topics

• Scope and Applicability

  • Applies to man-made rock and slag mineral fiber insulation containing only rock/slag fibers, mineral or synthetic oils, and organic thermal setting binders.
  • Excludes products with additional fiber types, inorganic binders, or refractory clays.
  • Developed in accordance with recognized international principles to facilitate trade and ensure global consistency.

• Test Method Overview

  • Utilizes a dry sieve analysis to separate and quantify shot content.
  • Involves manual or machine-driven methods using standardized sieves (Nos. 20, 50, 100).
  • Procedures address preparation, sieving, weighing, and calculations to determine the percentage of shot.

• Supplementary Elutriation Method

  • For specific applications (e.g., acoustical tile granulated wool), a wet separation method is detailed, using elutriation to distinguish shot in granulated mineral fiber.

• Reporting and Data

  • Requires documentation of specimen source, testing method, and shot content for each sieve size.
  • Results averaged from multiple specimens to ensure precision and reliability.

• Units and Safety

  • Standard uses inch-pound units as primary reference; SI units are informational only.
  • Users are responsible for addressing any safety, health, or environmental considerations during testing.

Applications

ASTM C1335-23 is essential in the quality control and specification compliance of mineral fiber insulation used in:

• Building and industrial thermal insulation systems
• Manufacture of insulation boards, blankets, and loose fill products
• Verification of raw materials and end products to comply with regulatory and performance standards
• Assessment of insulation efficiency, as lower shot content correlates with better insulating performance
• Specialty production, such as granulated wool for acoustical tile, where specific shot content control is required

Benefits of implementation include:

• Enhanced insulation product performance by quantifying and minimizing non-fibrous content
• Support for manufacturers in meeting project specification requirements
• Improved end-user confidence in insulation thermal efficiency and material consistency

Related Standards

For broader context and supporting procedures, ASTM C1335-23 references several important standards:

• ASTM C168 - Terminology Relating to Thermal Insulation
• ASTM C390 - Practice for Sampling and Acceptance of Thermal Insulation Lots
• ASTM E11 - Specification for Woven Wire Test Sieve Cloth and Test Sieves
• ASTM E178 - Practice for Dealing With Outlying Observations
• ASTM E691 - Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

These documents provide foundational terminology, equipment specifications, sampling practices, and statistical methods essential for consistent, accurate application of ASTM C1335-23 in insulation material testing and quality evaluation.

Keywords: ASTM C1335-23, non-fibrous content, mineral fiber insulation, rock and slag wool, shot content, dry sieve analysis, insulation testing, quality control, thermal insulation standards.