ASTM C240-21

Standard Test Methods for Testing Cellular Glass Insulation Block

SIGNIFICANCE AND USE
4.1 From a general standpoint, these test methods outline the particular points which have to be taken into account when applying ASTM standard test methods to the case of cellular glass insulating block.
SCOPE
1.1 These test methods cover the testing of cellular glass insulation block for density, water absorption, compressive strength, flexural strength at ambient temperature; preparation for chemical analysis; and thermal conductivity measurements.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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.  
1.4 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.

General Information

• Status: Published
• Publication Date: 28-Feb-2021
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.32 - Mechanical Properties

Standards Content (Sample)

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.
Designation: C240 − 21
Standard Test Methods for
1
Testing Cellular Glass Insulation Block
This standard is issued under the fixed designation C240; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope C390Practice for Sampling and Acceptance of Thermal
Insulation Lots
1.1 These test methods cover the testing of cellular glass
C518Test Method for Steady-State Thermal Transmission
insulation block for density, water absorption, compressive
Properties by Means of the Heat Flow Meter Apparatus
strength, flexural strength at ambient temperature; preparation
C871Test Methods for ChemicalAnalysis of Thermal Insu-
forchemicalanalysis;andthermalconductivitymeasurements.
lationMaterialsforLeachableChloride,Fluoride,Silicate,
1.2 Thevaluesstatedininch-poundunitsaretoberegarded
and Sodium Ions
as standard. The values given in parentheses are mathematical
D226/D226MSpecification for Asphalt-Saturated Organic
conversions to SI units that are provided for information only
Felt Used in Roofing and Waterproofing
and are not considered standard.
D4869/D4869M Specification for Asphalt-Saturated Or-
1.3 This standard does not purport to address all of the
ganic Felt Underlayment Used in Steep Slope Roofing
safety concerns, if any, associated with its use. It is the
2.2 ISO Standard:
responsibility of the user of this standard to establish appro-
ISO 3951Sampling Procedure and Charts for Inspection by
3
priate safety, health, and environmental practices and deter-
Variables for Percent Nonconforming
mine the applicability of regulatory limitations prior to use.
2.3 Military Standard:
1.4 This international standard was developed in accor-
MIL-I-24244SpecificationInsulationMaterialswithSpecial
4
dance with internationally recognized principles on standard-
Corrosion, Chloride, and Fluoride Requirements
ization established in the Decision on Principles for the
2.4 Other Standard:
Development of International Standards, Guides and Recom-
NRC 1.36Nonmetallic Thermal Insulation for Austenitic
5
mendations issued by the World Trade Organization Technical
Stainless Steel
Barriers to Trade (TBT) Committee.
3. Terminology
2. Referenced Documents
3.1 Definitions—Terminology C168 shall be considered as
2
2.1 ASTM Standards:
applying to the terms considered in these test methods.
C165TestMethodforMeasuringCompressivePropertiesof
Thermal Insulations 4. Significance and Use
C168Terminology Relating to Thermal Insulation
4.1 From a general standpoint, these test methods outline
C177Test Method for Steady-State Heat Flux Measure-
the particular points which have to be taken into account when
ments and Thermal Transmission Properties by Means of
applying ASTM standard test methods to the case of cellular
the Guarded-Hot-Plate Apparatus
glass insulating block.
C203Test Methods for Breaking Load and Flexural Proper-
ties of Block-Type Thermal Insulation
5. Test Methods
C303Test Method for Dimensions and Density of Pre-
5.1 General Sample Preparation—All tests have to be run
formed Block and Board–Type Thermal Insulation
on dry specimens. In case of need, the sample must be
unpacked and stored in a dry place in such a way that all
surfaces are exposed to the ambient air for a minimum of 24
1
These test methods are under the jurisdiction of ASTM Committee C16 on
hours before testing.
Thermal Insulation and are the direct responsibility of Subcommittee C16.32 on
Mechanical Properties.
Current edition approved March 1, 2021. Published March 2021. Originally
3
approved in 1950. Last previous edition approved in 2020 as C240–20. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/C0240-21. 4th Floor, New York, NY 10036, http://www.ansi.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Director of Regulatory Standards, US Atomic Energy
the ASTM website. Commission, Washington, DC 20545.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C240 − 21
5.2 Density—DeterminethedensityinaccordancewithTest results shall be s
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C240 − 20 C240 − 21
Standard Test Methods for
1
Testing Cellular Glass Insulation Block
This standard is issued under the fixed designation C240; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 These test methods cover the testing of cellular glass insulation block for density, water absorption, compressive strength,
flexural strength at ambient temperature; preparation for chemical analysis; and thermal conductivity measurements.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C165 Test Method for Measuring Compressive Properties of Thermal Insulations
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C203 Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
C303 Test Method for Dimensions and Density of Preformed Block and Board–Type Thermal Insulation
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C871 Test Methods for Chemical Analysis of Thermal Insulation Materials for Leachable Chloride, Fluoride, Silicate, and
Sodium Ions
D226/D226M Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing
D4869/D4869M Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope Roofing
2.2 ISO Standard:
3
ISO 3951 Sampling Procedure and Charts for Inspection by Variables for Percent Nonconforming
1
These test methods are under the jurisdiction of ASTM Committee C16 on Thermal Insulation and are the direct responsibility of Subcommittee C16.32 on Mechanical
Properties.
Current edition approved Sept. 1, 2020March 1, 2021. Published September 2020March 2021. Originally approved in 1950. Last previous edition approved in 20192020
as C240 – 19.C240 – 20. DOI: 10.1520/C0240-20.10.1520/C0240-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C240 − 21
2.3 Military Standard:
4
MIL-I-24244 Specification Insulation Materials with Special Corrosion, Chloride, and Fluoride Requirements
2.4 Other Standard:
5
NRC 1.36 Nonmetallic Thermal Insulation for Austenitic Stainless Steel
3. Terminology
3.1 Definitions—Terminology C168 shall be considered as applying to the terms considered in these test methods.
4. Significance and Use
4.1 From a general standpoint, these test methods outline the particular points which have to be taken into account when applying
ASTM standard test methods to the case of cellular glass insulating block.
5. Test Methods
5.1 General Sample Preparation—All tests have to be run on dry specimens. In case of need, the sample must be unpacked and
stored in a dry place in such a way that all surfaces are exposed to the ambient air for a minimum of 24 hours before testing.
5.2 Density—Determine the density in accordance with Test Method C303. Preferably
...