ASTM C240-21 PDF
Name in English:
St ASTM C240-21
Name in Russian:
Ст ASTM C240-21
Original standard ASTM C240-21 in PDF full version. Additional info + preview on request
Full title and description
ASTM C240-21 — Standard Test Methods for Testing Cellular Glass Insulation Block. Specifies standardized test methods used to determine physical and thermal properties of cellular glass insulation block, including density, water absorption, mechanical strengths, preparation for chemical analysis, and thermal conductivity measurement procedures for product evaluation and quality control.
Abstract
This standard provides specific test methods and procedural guidance for assessing cellular glass insulation block. It adapts general ASTM test procedures to the material form of cellular glass block to ensure consistent measurement of density, water absorption, compressive and flexural strength at ambient temperature, sample preparation for chemical analysis, and steady-state thermal conductivity measurements.
General information
- Status: Active
- Publication date: 1 March 2021.
- Publisher: ASTM International
- ICS / categories: 91.100.60 (Thermal and sound insulating materials).
- Edition / version: C240-21 (2021 edition)
- Number of pages: 4.
Scope
Applies to test methods for cellular glass insulation block covering: determination of density, procedures for water absorption measurement, compressive strength and flexural strength at ambient temperature, preparation of specimens for chemical analysis, and thermal conductivity (steady-state) measurements—adapted from relevant ASTM test methods to the block form. The inch‑pound units are the standard; SI conversions are provided for information.
Key topics and requirements
- Density determination methods specific to cellular glass block.
- Water absorption test procedures and reporting conventions.
- Compressive strength test method for block specimens.
- Flexural strength testing at ambient temperature.
- Specimen preparation guidance for chemical analysis of cellular glass.
- Thermal conductivity measurement procedures (steady‑state heat flow methods and related references).
- Unit conventions: inch‑pound as standard with SI conversions noted.
Typical use and users
Used by material test laboratories, manufacturers of cellular glass insulation, product development and quality‑control engineers, specifiers and procurement teams, building envelope consultants, and standards committees for product verification, acceptance testing, and comparative performance assessment.
Related standards
References and relationships commonly include ASTM test methods and practices used alongside C240: ASTM C518 (steady‑state thermal transmission by heat flow meter), ASTM C168 (terminology for thermal insulation), ASTM C871 (chemical analysis methods for thermal insulation), and related C16 committee documents. C240-21 replaces the prior C240-20 edition.
Keywords
cellular glass, insulation block, density, water absorption, compressive strength, flexural strength, thermal conductivity, ASTM C240-21, thermal insulation, test methods
FAQ
Q: What is this standard?
A: ASTM C240-21 is a collection of standardized test methods tailored for evaluating cellular glass insulation block physical and thermal properties.
Q: What does it cover?
A: It covers test procedures for density, water absorption, compressive and flexural strengths (ambient), specimen prep for chemical analysis, and thermal conductivity measurements, plus unit conventions and related guidance for block‑form cellular glass.
Q: Who typically uses it?
A: Manufacturers, independent test labs, quality/control engineers, specifiers, and building-envelope consultants use it for product verification, R&D, and acceptance testing.
Q: Is it current or superseded?
A: C240-21 is the 2021 active edition and supersedes C240-20; it is listed as the current active version published 1 March 2021.
Q: Is it part of a series?
A: It is part of ASTM Committee C16's thermal insulation family of standards (Volume 04.06) and is intended to be used with other ASTM test methods and practices referenced within the document.
Q: What are the key keywords?
A: Cellular glass, insulation block, density, water absorption, compressive strength, flexural strength, thermal conductivity, ASTM C240-21.