ASTM D6152/D6152M-12(2024)

Standard Specification for SEBS-Modified Mopping Asphalt Used in Roofing

ABSTRACT
This specification covers SEBS (styrene-ethylenebutylene-styrene)-modified mopping asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roofing systems. This specification is intended as a material specification and issues regarding the suitability of specific roof constructions or application techniques are beyond its scope. The specified tests and property values are intended to establish minimum properties. In place system design criteria or performance attributes are factors beyond the scope of this specification. The base asphalt shall be prepared from crude petroleum and the SEBS-modified asphalt shall incorporate sufficient SEBS as the primary polymeric modifier. The SEBS modified asphalt shall be homogeneous and free of water and shall conform to the prescribed physical properties including (1) softening point before and after heat exposure, (2) softening point change, (3) flash point, (4) penetration before and after heat exposure, (5) penetration change, (6) solubility in trichloroethylene, (7) tensile elongation, (8) elastic recovery, and (9) low temperature flexibility. The sampling and test methods to determine compliance with the specified physical properties, as well as the evaluation for stability during heat exposure are detailed.
SCOPE
1.1 This specification covers SEBS (styrene-ethylene-butylene-styrene)-modified asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roof systems.  
1.2 This specification is intended as a material specification. Issues regarding the suitability of specific roof constructions or application techniques are beyond its scope.  
1.3 The specified tests and property values used to characterize SEBS-modified asphalt are intended to establish minimum properties. In-place system design criteria or performance attributes are factors beyond the scope of this 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 nonconformance with the standard.  
1.5 This standard does not purport to address 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.

General Information

• Status: Published
• Publication Date: 30-Apr-2024
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.03 - Surfacing and Bituminous Materials for Membrane Waterproofing and Built-up Roofing

Overview

ASTM D6152/D6152M-12(2024) is the standard specification developed by ASTM International for SEBS-modified mopping asphalt used in roofing applications. This material specification identifies the minimum physical property requirements and testing methods for styrene-ethylene-butylene-styrene (SEBS) polymer-modified asphalts. The standard targets use in built-up roof construction, certain modified bitumen systems, bituminous vapor retarders, and the adhesion of insulation boards for a diverse range of roofing systems. With SEBS as the primary polymeric modifier, the specification ensures the roofing asphalt is homogeneous, free of water, and possesses enhanced flexibility, durability, and handling properties.

Key Topics

• Material Scope
  SEBS-modified asphalts covered by this standard are intended for:

  • Built-up roofing systems
  • Some modified bitumen roofing systems
  • Bituminous vapor retarder systems
  • Adhering insulation boards

• Physical Property Requirements
  The specification sets minimum requirements for critical material properties, including:

  • Softening point (before and after heat exposure)
  • Flash point
  • Penetration (before and after heat exposure)
  • Solubility in trichloroethylene
  • Tensile elongation
  • Elastic recovery
  • Low temperature flexibility

• Testing and Compliance
  Compliance is determined via referenced ASTM test methods, such as:

  • D36/D36M: Softening Point of Bitumen
  • D5/D5M: Penetration of Bituminous Materials
  • D92: Flash and Fire Point
  • D2042: Solubility in Trichloroethylene
  • D412: Tensile Elongation and Elastic Recovery
  • D3111: Low Temperature Flexibility

• Sampling and Packaging
  Material sampling must follow ASTM D140/D140M.
  Containers must be marked with the manufacturer, ASTM designation, flash point, and application temperature.

Applications

SEBS-modified mopping asphalt offers significant advantages for roofing professionals and manufacturers. Its practical applications include:

• Built-Up Roofs: Enhances membrane performance and longevity in traditional layered roof systems.
• Modified Bitumen Systems: Improves material elasticity and weather resistance, crucial for both torch-applied and mopped installations.
• Vapor Retarder Systems: Provides reliable vapor barrier properties in bituminous systems to improve building envelope performance.
• Insulation Board Adhesion: Used effectively to secure insulation boards in a range of roofing assemblies, ensuring strong bond and resilient performance.

These attributes make SEBS-modified asphalt particularly suitable for both new construction and roof renovations where superior durability, flexibility, and consistent physical properties are required in diverse climates.

Related Standards

To ensure full compliance and performance in roofing applications, ASTM D6152/D6152M-12(2024) references several related standards:

• ASTM D5/D5M: Test Method for Penetration of Bituminous Materials
• ASTM D36/D36M: Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)
• ASTM D92: Test Method for Flash and Fire Points by Cleveland Open Cup Tester
• ASTM D140/D140M: Practice for Sampling Asphalt Materials
• ASTM D312/D312M: Specification for Asphalt Used in Roofing
• ASTM D412: Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension
• ASTM D2042: Test Method for Solubility of Asphalt Materials in Trichloroethylene or Toluene
• ASTM D3111: Practice for Flexibility Determination of Hot-Melt Adhesives by Mandrel Bend Test
• ASTM D1079: Terminology Relating to Roofing and Waterproofing

Practical Value

Compliance with ASTM D6152/D6152M-12(2024) assures that SEBS-modified mopping asphalt products meet internationally recognized standards for quality, consistency, and performance. It facilitates specification, procurement, and inspection processes for contractors, manufacturers, specifiers, and building owners committed to long-lasting, high-performance roofing systems.

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: D6152/D6152M − 12 (Reapproved 2024)
Standard Specification for
SEBS-Modified Mopping Asphalt Used in Roofing
This standard is issued under the fixed designation D6152/D6152M; 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
2.1 ASTM Standards:
1.1 This specification covers SEBS (styrene-ethylene-
D5/D5M Test Method for Penetration of Bituminous Mate-
butylene-styrene)-modified asphalt intended for use in built-up
rials
roof construction, construction of some modified bitumen
D36/D36M Test Method for Softening Point of Bitumen
systems, construction of bituminous vapor retarder systems,
(Ring-and-Ball Apparatus)
and for adhering insulation boards used in various types of roof
D92 Test Method for Flash and Fire Points by Cleveland
systems.
Open Cup Tester
1.2 This specification is intended as a material specification. D140/D140M Practice for Sampling Asphalt Materials
D312/D312M Specification for Asphalt Used in Roofing
Issues regarding the suitability of specific roof constructions or
D412 Test Methods for Vulcanized Rubber and Thermoplas-
application techniques are beyond its scope.
tic Elastomers—Tension
1.3 The specified tests and property values used to charac-
D1079 Terminology Relating to Roofing and Waterproofing
terize SEBS-modified asphalt are intended to establish mini-
D2042 Test Method for Solubility of Asphalt Materials in
mum properties. In-place system design criteria or perfor-
Trichloroethylene or Toluene
mance attributes are factors beyond the scope of this
D3111 Practice for Flexibility Determination of Hot-Melt
specification.
Adhesives by Mandrel Bend Test
1.4 The values stated in either SI units or inch-pound units 3. Terminology
are to be regarded separately as standard. The values stated in
3.1 Definitions—For definitions of general terms used in this
each system may not be exact equivalents; therefore, each
specification, refer to Terminology D1079.
system shall be used independently of the other. Combining
3.2 Definitions of Terms Specific to This Standard:
values from the two systems may result in nonconformance
3.2.1 elastic recovery, n—the degree to which a material
with the standard.
returns to its normal dimensions after being distorted.
1.5 This standard does not purport to address the safety
3.2.2 low-temperature flexibility, n—the ability of a material
concerns, if any, associated with its use. It is the responsibility
to bend at a prescribed rate around a mandrel of a prescribed
of the user of this standard to establish appropriate safety,
diameter at a prescribed low temperature without cracking or
health, and environmental practices and determine the appli-
breaking.
cability of regulatory limitations prior to use.
4. Materials and Manufacture
1.6 This international standard was developed in accor-
4.1 The base asphalt shall be prepared from crude petro-
dance with internationally recognized principles on standard-
leum.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.2 The SEBS-modified asphalt shall incorporate sufficient
SEBS as the primary polymeric modifier to meet the require-
mendations issued by the World Trade Organization Technical
ments of this specification.
Barriers to Trade (TBT) Committee.
5. Physical Requirements
5.1 The SEBS-modified asphalt shall be homogeneous and
This specification is under the jurisdiction of ASTM Committee D08 on
free of water.
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.03
on Surfacing and Bituminous Materials for Membrane Waterproofing and Built-up
Roofing. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2024. Published May 2024. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1997. Last previous edition approved in 2018 as D6152/D6152M – 12 Standards volume information, refer to the standard’s Document Summary page on
(2018). DOI: 10.1520/D6152_D6152M-12R24. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6152/D6152M − 12 (2024)
5.2 The SEBS-modified asphalt shall conform to the physi- 7.3 Determine tensile elongation as prescribed by Test
cal properties prescribed in Table 1. Method D412 using die C. The test shall be made at 23.0 6
2.0 °C [73.4 6 3.6 °F] and with a speed of 500 6 25 mm/min
6. Sampling
[20 6 1 in./min].
6.1 Sample the material as prescribed in Practice D140/
7.4 Determine low-temperature flexibility as prescribed by
D140M.
Practice D3111 using a 25 6 1 mm [1.00 6 0.04 in.] diameter
6.2 If the material is shipped in hot filled cardboard or mandrel. The specimens shall be 2.00 6 0.15 mm [0.079 6
0.006 in.] thick.
plastic kegs, obtain samples from the kegs in accordance with
the following procedure:
7.5 Determine elastic recovery using the tensile set proce-
6.2.1 Remove the container from the block of SEBS-
dure as prescribed by Test Method D412 using die C. The test
modified asphalt, cutting away the liner if present.
shall be made at 23.0 6 2.0 °C [73.4 6 3.6 °F] and with a
6.2.2 Using a hatchet or a hot knife, cut two vertical wedges
speed of 500 6 25 mm/min [20 6 1 in./min]. Elongate the
approximately 50 mm [2 in.] wide and 50 mm [2 in.] deep
specimen 300 %, then immediately release the lower jaw to
along the entire length of the material block. Cut the wedges
allow recovery. Record elastic recovery as follows:
into 100 mm [4 in.] lengths.
Recovery, % 5 100 4L 2 X /3L (1)
~ !
6.2.3 Place the wedges in a can with a capacity of 3.8 L
[1 gal]. Loosely cover the can and heat in a convection oven at
where:
1 1
210 6 5 °C [410 6 9 °F] for a period of 2 ⁄2 6 ⁄2 h. Stir
...