ASTM D1670/D1670M-11

Standard Test Method for Failure End Point in Accelerated and Outdoor Weathering of Bituminous Materials

SIGNIFICANCE AND USE
The extent of cracking or pitting of bituminous films is a measure of the extent of deterioration due to weathering. Failure due to cracking is more accurately determined electrically than visually.
Failure determined by this test method will depend not only on the characteristics of the bituminous material and the extent of weathering, but also on the film thickness, and the amount and type of mineral filler present.
Tests on a similar material of known weathering characteristics (a control) exposed at the same time as the test material is strongly recommended as a check on the validity of the test results.
SCOPE
1.1 This test method covers the use of a spark generating apparatus for determination of failure due to cracking of bituminous materials undergoing accelerated or outdoor weathering on electrically conductive backings.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 14-Dec-2011
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.02 - Steep Roofing Products and Assemblies

Relations

• Replaces: ASTM D1670/D1670M-04(2011)e1 - Standard Test Method for Failure End Point in Accelerated and Outdoor Weathering of Bituminous Materials
• Effective Date: 15-Dec-2011
• Referred By: ASTM D4799/D4799M-17(2023) - Standard Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Fluorescent UV, Water Spray, and Condensation Method)
• Effective Date: 15-Dec-2011
• Referred By: ASTM D4798/D4798M-11(2021) - Standard Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Xenon-Arc Method)
• Effective Date: 15-Dec-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1670/D1670M − 11
Standard Test Method for
Failure End Point in Accelerated and Outdoor Weathering of
1
Bituminous Materials
This standard is issued under the fixed designation D1670/D1670M; 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 3. Summary of Test Method
1.1 This test method covers the use of a spark generating 3.1 Dry, weathered, bituminous-coated test panels are
apparatus for determination of failure due to cracking of grounded and a feeler electrode is passed over the back of a
bituminousmaterialsundergoingacceleratedoroutdoorweath- linagraphicorultrahighsensitivitythermalfaxpaperplacedon
ering on electrically conductive backings. the bituminous surface with the emulsion side down. Photo-
copies are made of the front side of the paper on which the
1.2 The values stated in either SI units or inch-pound units
spots caused by the sparks appear. The photographs are
are to be regarded separately as standard. The values stated in
covered with an acrylic grid and the number of squares
each system may not be exact equivalents; therefore, each
containing the spark records are counted and reported. Spark-
system shall be used independently of the other. Combining
ing in 26 or more grid squares is representative of failure.
values from the two systems may result in non-conformance
with the standard.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 The extent of cracking or pitting of bituminous films is
safety concerns, if any, associated with its use. It is the
a measure of the extent of deterioration due to weathering.
responsibility of the user of this standard to establish appro-
Failure due to cracking is more accurately determined electri-
priate safety and health practices and determine the applica-
cally than visually.
bility of regulatory limitations prior to use.
4.2 Failure determined by this test method will depend not
only on the characteristics of the bituminous material and the
2. Referenced Documents
extent of weathering, but also on the film thickness, and the
2
2.1 ASTM Standards:
amount and type of mineral filler present.
D1435 Practice for Outdoor Weathering of Plastics
4.3 Tests on a similar material of known weathering char-
D1669 Practice for Preparation of Test Panels for Acceler-
acteristics (a control) exposed at the same time as the test
ated and Outdoor Weathering of Bituminous Coatings
material is strongly recommended as a check on the validity of
D4798 Practice for Accelerated Weathering Test Conditions
the test results.
and Procedures for Bituminous Materials (Xenon-Arc
Method)
5. Apparatus
D4799 Practice for Accelerated Weathering Test Conditions
3
5.1 Any Spark-Generating Apparatus —Fig. 1 is an ex-
and Procedures for Bituminous Materials (Fluorescent
ample of an acceptable configuration for the test feeler. Other
UV, Water Spray, and Condensation Method)
configurations are not prohibited, subject to the following
conditions:
1
5.1.1 The cross-dimension of the wire loop is to be 50 6 5
This test method is under the jurisdiction ofASTM Committee D08 on Roofing
3 1
andWaterproofingandisthedirectresponsibilityofSubcommitteeD08.02onSteep
mm [1 ⁄4 6 ⁄8 in.].
Roofing Products and Assemblies.
Current edition approved Dec. 15, 2011. Published January 20112. Originally
ε1 3
approved in 1959. Last previous edition approved in 2011 as D1670 – 04(2011) . The sole source of supply of the apparatus known to the committee at this time
DOI: 10.1520/D1670_D1670M-11. is Electrotechnic Model BD-40B Spark Generator, available from Electro-Technic
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Products Co., 4642 N. Ravenswood Ave., Chicago, IL 60642. If you are aware of
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM alternative suppliers, please provide this information to ASTM Headquarters. Your
Standards volume information, refer to the standard’s Document Summary page on comments will receive careful consideration at a meeting of the responsible
1
the ASTM website. technical committee, which you may attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D1670/D1670M − 11
FIG. 1 Feeler
5.1.2 The device is capable of delivering a 5-kV peak
voltage and of operating at 60 Hz.
5.2 Photographic Equipment—A supply of sheets of matte
FIG. 2 Counting Grid
4
surface, regular weight, photocopy paper or linagraphic paper
cut to the dimensions of the test panel, dev
...

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:D1670–04 Designation:D1670/D1670M–11
Standard Test Method for
Failure End Point in Accelerated and Outdoor Weathering of
1
Bituminous Materials
This standard is issued under the fixed designation D1670/D1670M; 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 This test method covers the use of a spark generating apparatus for determination of failure due to cracking of bituminous
materials undergoing accelerated or outdoor weathering on electrically conductive backings.
1.2The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
2
D529Practice for Enclosed Carbon-Arc Exposures of Bituminous Materials ASTM Standards:
D1435 Practice for Outdoor Weathering of Plastics
D1669 Practice for Preparation of Test Panels for Accelerated and Outdoor Weathering of Bituminous Coatings
D4798 Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Xenon-Arc Method)
D4799 Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Fluorescent UV, Water
Spray, and Condensation Method)
3. Summary of Test Method
3.1 Dry, weathered, bituminous-coated test panels are grounded and a feeler electrode is passed over the back of a linagraphic
or ultra high sensitivity thermal fax paper placed on the bituminous surface with the emulsion side down. Photocopies are made
of the front side of the paper on which the spots caused by the sparks appear. The photographs are covered with an acrylic grid
and the number of squares containing the spark records are counted and reported. Sparking in 26 or more grid squares is
representative of failure.
4. Significance and Use
4.1 The extent of cracking or pitting of bituminous films is a measure of the extent of deterioration due to weathering. Failure
due to cracking is more accurately determined electrically than visually.
4.2 Failure determined by this test method will depend not only on the characteristics of the bituminous material and the extent
of weathering, but also on the film thickness, and the amount and type of mineral filler present.
4.3 Tests on a similar material of known weathering characteristics (a control) exposed at the same time as the test material is
strongly recommended as a check on the validity of the test results.
1
This test method is under the jurisdiction ofASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.02 on Prepared
Roofings, Shingles, and Siding Materials.
Current edition approved May 1, 2004. Published May 2004. Originally approved in 1959. Last previous edition approved in 2003 as D1670–98(2003). DOI:
10.1520/D1670-04.on Steep Roofing Products and Assemblies.
´1
Current edition approved Dec. 15, 2011. Published January 20112. Originally approved in 1959. Last previous edition approved in 2011 as D1670 – 04(2011) . DOI:
10.1520/D1670_D1670M-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D1670/D1670M–11
5. Apparatus
3
5.1 Any Spark-Generating Apparatus —Fig. 1 is an example of an acceptable configuration for the test feeler. Other
configurations are not prohibited, subject to the following conditions:
3 1
5.1.1 The cross-dimension of the wire loop is to be 50 6 5 mm (1[1 ⁄4 6 ⁄8 in
...