Overview
ASTM D2026/D2026M-15(2021)e1, Standard Specification for Cutback Asphalt (Slow-Curing Type), is a specification developed by ASTM International for cutback petroleum asphalts classified as slow-curing. This standard provides requirements for the use of slow-curing cutback asphalt in the construction and treatment of pavements. It is widely recognized and used by industry professionals, including approval for use by agencies of the U.S. Department of Defense. This specification aligns with internationally accepted principles established by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Key Topics
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Scope and Coverage:
The standard defines the properties and test methods for slow-curing cutback asphalt used in pavement construction and maintenance.
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Units of Measurement:
Specifies that all values must be stated independently in SI or inch-pound units without combining them to avoid nonconformance.
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Referenced Test Methods:
Includes specific ASTM test methods for:
- Flash and fire points (D92)
- Kinematic viscosity (D2170/D2170M)
- Distillation (D402/D402M)
- Residue of specified penetration (D243/D243M)
- Solubility in trichloroethylene or N-propyl bromide (D2042/D7553)
- Ductility (D113)
- Water content (D95)
- Sampling procedures (D140/D140M)
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Material Requirements:
Specifies that the cutback asphalt must not foam at application temperature and must meet criteria for viscosity, flash point, distillation, solubility, residue penetration, ductility, and water content as listed in Table 1 of the standard.
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International Compliance:
Aligns with international trade principles to facilitate global adoption and technical compatibility.
Applications
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Pavement Construction:
Used as a binder for roadways, highways, and other paved surfaces, particularly where conditions favor the use of slow-curing asphalt for better workability and controlled setting times.
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Surface Treatment:
Applied in surface dressing, patching, and sealing applications to enhance pavement longevity and performance.
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Base and Subbase Stabilization:
Acts as a stabilizing agent in granular bases and subbases, providing resistance to disintegration and improving load distribution.
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Maintenance and Repair:
Suited for road maintenance applications, especially in cold or damp conditions where rapid cure would not be appropriate.
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Regulatory and Public Works Projects:
Frequently cited in specifications for federal, state, and municipal infrastructure projects requiring adherence to recognized standards.
Related Standards
- ASTM D95: Test Method for Water in Petroleum Products and Bituminous Materials by Distillation.
- ASTM D113: Test Method for Ductility of Asphalt Materials.
- ASTM D140/D140M: Practice for Sampling Asphalt Materials.
- ASTM D243/D243M: Test Method for Residue of Specified Penetration.
- ASTM D402/D402M: Test Method for Distillation of Cutback Asphalt.
- ASTM D2042: Test Method for Solubility of Asphalt Materials in Trichloroethylene.
- ASTM D2170/D2170M: Test Method for Kinematic Viscosity of Asphalts.
- ASTM D7553: Test Method for Solubility of Asphalt Materials in N-Propyl Bromide.
These referenced standards outline crucial testing and quality assurance procedures ensuring that cutback asphalt meets all technical and performance criteria required in construction and maintenance practices.
By adhering to ASTM D2026/D2026M-15(2021)e1, engineers, contractors, and public agencies can ensure the consistent quality and performance of slow-curing cutback asphalts, promoting safer and longer-lasting pavements. For up-to-date information and the full specification, visit the ASTM International website.