ASTM D7942-15(2023) PDF
Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas
Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 1 мая 2023 г.
- Издание:
- D7942
- ICS:
- 93.080.30
ABSTRACT This specification covers reflectorized thermoplastic based pavement striping material of the class that is applied to the road surface in a molten state by screed/extrusion or ribbon extrusion means. It deals with longitudinal applications in non snow plow areas, standard (non-profile) pavement marking applications, and applications on smooth asphalt or concrete surfaces. It does not include asphalt seal coat applications, which use large aggregate resulting in a very rough, open grade finish. This specification establishes requirements with respect to chemical composition and physical property of the thermoplastic pavement marking material, requirements for the optics that are used to reflectorize the thermoplastic pavement marking material after application, field performance requirements for the installed thermoplastic pavement markings, and material application requirements. SCOPE 1.1 This specification covers a reflectorized thermoplastic-based pavement striping material of the class that is applied to the road surface in a molten state by screed/extrusion or ribbon extrusion means. Retroreflectivity of the pavement marking compound is achieved initially by surface application of retroreflective optics at the time of pavement marking application. Upon cooling to normal pavement temperature, the pavement marking material produces an adherent reflectorized stripe of specified thickness and width capable of resisting deformation by traffic. The pavement marking compound includes retroreflective optics (glass beads or composite optics, or both) that are incorporated into the material at the time of manufacture that provide retroreflective properties during the service life of the material. 1.1.1 This specification is limited to: 1.1.1.1 Longitudinal applications in non snow plow areas, 1.1.1.2 Standard (non-profile) pavement marking applications, and 1.1.1.3 Applications on smooth asphalt or concrete surfaces. Asphalt seal coat applications, which use large aggregate resulting in a very rough, open grade finish, are excluded from this specification. 1.1.2 This specification includes: 1.1.2.1 Compositional and physical property requirements of the thermoplastic pavement marking material, 1.1.2.2 Requirements for the optics that are used to reflectorize the thermoplastic pavement marking material after application, 1.1.2.3 Field performance requirements for the installed thermoplastic pavement markings, and 1.1.2.4 Material application requirements. 1.2 The values stated in inch-pounds units are to be regarded as the standard except where noted in the document. 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.
Abstract
Overview
ASTM D7942-15(2023) - Standard Specification for Thermoplastic Pavement Markings in Non Snow Plow Areas provides comprehensive requirements for the composition, application, and performance of reflectorized thermoplastic-based pavement striping materials. These materials are specifically intended for use in longitudinal pavement markings applied on smooth asphalt or concrete road surfaces in areas where snow plow operations are not conducted. This standard defines the key performance criteria, including chemical composition, physical properties, retroreflectivity, and application procedures, ensuring high visibility and durability of pavement markings in diverse environmental and traffic conditions.
Key Topics
- Material Composition: The standard covers requirements for thermoplastic binders, fillers, pigments, and retroreflective optics such as glass beads or composite optics.
- Retroreflectivity: Ensures the thermoplastic pavement markings have both initial and retained retroreflective properties for visibility under night-time conditions.
- Physical Properties: Specifications for color, hardness, softening point, and durability are outlined to guarantee long-term performance and resistance to deformation under vehicular traffic.
- Application Methods: Details for proper application using screed/extrusion or ribbon extrusion techniques, including recommended application thickness and temperatures.
- Surface and Installation Preparation: Outlines the necessary conditions for pavement surfaces, cleaning, and primer use to ensure optimal adhesion and performance.
- Field Performance: Includes minimum performance life based on traffic volume, strict durability criteria, and requirements for field testing of markings after installation.
- Environmental and Safety Considerations: Users are instructed to follow appropriate safety, health, and environmental practices and to check the applicability of local regulatory requirements.
Applications
The ASTM D7942-15(2023) standard is critical for:
- Highway and Roadway Agencies: Ensuring that pavement markings are visible, durable, and compliant with required specifications, enhancing road safety in non snow plow regions.
- Contractors and Installers: Serving as a guideline for selecting, applying, and verifying thermoplastic pavement marking materials to meet project specifications.
- Material Manufacturers: Specifying minimum requirements for product composition, quality control, and performance, enabling manufacturers to produce compliant marking materials.
- Quality Assurance: Providing a basis for inspecting pavement markings for properties like color stability, retroreflectivity, and thickness, supporting contract compliance and public safety.
Typical applications include:
- Longitudinal striping on new or existing asphalt and concrete pavements
- Lane dividers, edge lines, and centerlines in urban, suburban, and rural roadways
- Locations not exposed to snowplow operations, where retroreflective visibility is critical year-round
Related Standards
Referencing and aligning with the following standards ensures comprehensive compliance and compatibility:
- ASTM D36/D36M: Test Method for Softening Point of Bitumen
- ASTM D4960: Evaluation of Color for Thermoplastic Pavement Marking Materials
- ASTM D6628: Specification for Color of Pavement Marking Materials
- ASTM D7307/D7308: Practices for Sampling and Sample Preparation of Thermoplastic Pavement Marking Materials
- ASTM D7585/D7585M: Practice for Evaluating Retroreflective Pavement Markings Using Hand-Operated Instruments
- ASTM E1710: Measurement of Retroreflective Pavement Marking Materials
- AASHTO M 247: Specification for Glass Beads Used in Traffic Paints
- AASHTO T 250: Test Method for Thermoplastic Traffic Line Material
These standards facilitate consistent quality, interoperability, and performance assessment for thermoplastic pavement markings, supporting infrastructure safety and longevity.
Keywords: thermoplastic pavement markings, ASTM D7942-15, reflectorized pavement striping, non snow plow areas, longitudinal road markings, retroreflective optics, highway marking standards, pavement marking durability, road safety compliance
Технические детали
- Технический комитет
- D04 - Road and Paving Materials
- SKU
- ASTM D7942-15(2023)
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