Standard Specification for Atactic Polypropylene (APP) Modified Bituminous Base Sheet Materials Using Glass Fiber Reinforcements

ABSTRACT
This specification covers prefabricated modified bituminous sheet materials with glass fiber reinforcement, which use atactic polypropylene (APP) as the primary modifier and which are intended for use as a base sheet in the fabrication of multiple ply roofing and waterproofing membranes. The high temperature stability and low temperature unrolling shall be tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers prefabricated modified bituminous sheet materials with glass fiber reinforcement, which use atactic polypropylene (APP) as the primary modifier and which are intended for use as a base sheet in the fabrication of multiple ply roofing and waterproofing membranes.  
1.2 This is a material specification only. Issues regarding the suitability of specific roof constructions or application techniques are beyond the scope of this specification.  
1.3 The specified tests and property limits used to characterize the sheet materials covered by this specification are intended to establish minimum properties. In-place roof system design criteria, such as fire resistance, field strength, impact/puncture resistance, material compatibility, uplift resistance, the need for field applied coatings, and others, are factors beyond the scope of this material specification.  
1.4 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.  
1.5 The following precautionary statement pertains only to the test method portion, Section 8, of this specification. 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.  
1.6 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.

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Publication Date
31-Jan-2023
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ASTM D6509/D6509M-16(2023) - Standard Specification for Atactic Polypropylene (APP) Modified Bituminous Base Sheet Materials Using Glass Fiber Reinforcements
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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: D6509/D6509M − 16 (Reapproved 2023)
Standard Specification for
Atactic Polypropylene (APP) Modified Bituminous Base
Sheet Materials Using Glass Fiber Reinforcements
This standard is issued under the fixed designation D6509/D6509M; 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 2. Referenced Documents
1.1 This specification covers prefabricated modified bitumi- 2.1 ASTM Standards:
nous sheet materials with glass fiber reinforcement, which use D1079 Terminology Relating to Roofing and Waterproofing
atactic polypropylene (APP) as the primary modifier and which D5147/D5147M Test Methods for Sampling and Testing
are intended for use as a base sheet in the fabrication of Modified Bituminous Sheet Material
multiple ply roofing and waterproofing membranes. D5636/D5636M Test Method for Low-Temperature Unroll-
ing of Felt or Sheet Roofing and Waterproofing Materials
1.2 This is a material specification only. Issues regarding the
suitability of specific roof constructions or application tech-
3. Terminology
niques are beyond the scope of this specification.
3.1 Definitions—For definitions of terms used in this
1.3 The specified tests and property limits used to charac-
specification, refer to Terminology D1079.
terize the sheet materials covered by this specification are
intended to establish minimum properties. In-place roof system
4. Materials and Manufacture
design criteria, such as fire resistance, field strength, impact/
4.1 In the manufacturing process, the reinforcement is
puncture resistance, material compatibility, uplift resistance,
impregnated and coated on both sides in an APP-modified
the need for field applied coatings, and others, are factors
bituminous coating. The APP-modified bituminous coating
beyond the scope of this material specification.
shall be permitted to be compounded with a mineral stabilizer.
1.4 The values stated in either SI units or inch-pound units
4.2 The base sheet shall be permitted to be surfaced with
are to be regarded separately as standard. The values stated in
mineral matter to prevent sticking in the roll. The reverse side
each system may not be exact equivalents; therefore, each
shall be permitted to be covered with a thin polyolefin film or
system shall be used independently of the other. Combining
with other surfacing that will not interfere with adhesion or
values from the two systems may result in non-conformance
bonding of the sheet during application.
with the standard.
5. Physical Properties
1.5 The following precautionary statement pertains only to
the test method portion, Section 8, of this specification. This
5.1 The sheet shall conform to the minimum physical
standard does not purport to address all of the safety concerns,
properties described in Table 1.
if any, associated with its use. It is the responsibility of the user
5.2 The finished product shall not crack or be so sticky as to
of this standard to establish appropriate safety, health, and
cause tearing or other material damage upon being unrolled at
environmental practices and determine the applicability of
any product temperature between 4 °C and 60 °C [40 °F and
regulatory limitations prior to use.
140 °F].
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
6. Dimensions, Mass, and Permissible Variations
ization established in the Decision on Principles for the
6.1 The finished product shall conform to the following
Development of International Standards, Guides and Recom-
dimensions and variations:
mendations issued by the World Trade Organization Technical
6.1.1 The width of the roll shall be as agreed upon between
Barriers to Trade (TBT) Committee.
the purchaser and the supplier and shall not vary more than
1 %.
This specification is under the jurisdiction of ASTM Committee D08 and is the
direct responsibility of Subcommittee D08.04 on Felts, Fabrics and Bituminous
Sheet Materials. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Feb. 1, 2023. Published February 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2000. Last previous edition approved in 2016 as D6509/D6509M – 16. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D6509_D6509M-16R23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6509/D6509M − 16 (2023)
TABLE 1 Physical Properties of Atactic Polypropylene (APP)-
men. It shall be free of visible defects, such as holes, ragged or
Modified Bituminous Base Sheet Materials Using Glass Fiber
untrue edges, breaks, cracks, tears, and protrusions.
Reinforcements
7.2 When unrolled on a smooth plane, the sheet shall be
NOTE 1—The properties in this table are “as manufactured” unless
straight and true so that the lap will mate with an adjacent
otherwise noted.
sheet, within the tolerance for the lap without wrinkles,
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