BS EN 12697-48:2021 Bituminous Mixtures - Test Methods for Interlayer Bonding

Standard Number: BS EN 12697-48:2021

Pages: 48

Released: 2021-12-13

ISBN: 978 0 539 05106 3

Status: Standard

Overview

The BS EN 12697-48:2021 standard is an essential document for professionals in the field of civil engineering, particularly those involved in the construction and maintenance of bituminous pavements. This standard provides comprehensive test methods for evaluating the interlayer bonding of bituminous mixtures, ensuring the structural integrity and longevity of pavement layers.

Key Features

• Comprehensive Coverage: With 48 pages of detailed methodologies, this standard offers an in-depth look at various test methods for interlayer bonding.
• Up-to-Date Information: Released on December 13, 2021, this standard incorporates the latest advancements and best practices in the field.
• International Recognition: As a part of the BS EN series, this standard is recognized and utilized globally, ensuring consistency and reliability in testing procedures.
• ISBN: 978 0 539 05106 3, making it easy to reference and locate in professional and academic libraries.

Why Interlayer Bonding Matters

Interlayer bonding is a critical aspect of pavement performance. Poor bonding between layers can lead to premature failures such as delamination, cracking, and rutting. By adhering to the test methods outlined in BS EN 12697-48:2021, engineers and contractors can ensure that the layers of bituminous mixtures are properly bonded, resulting in more durable and resilient pavements.

Detailed Test Methods

This standard provides a variety of test methods to assess interlayer bonding, including:

• Shear Tests: Evaluate the shear strength between layers to ensure they can withstand horizontal forces.
• Tensile Tests: Measure the tensile strength to determine the ability of the layers to resist separation under tension.
• Peel Tests: Assess the peel strength to evaluate the resistance to peeling forces.

Each test method is described in detail, including the required equipment, sample preparation, testing procedures, and interpretation of results. This ensures that users can accurately and consistently perform the tests, leading to reliable data and informed decision-making.

Applications

The BS EN 12697-48:2021 standard is applicable in various scenarios, including:

• New Pavement Construction: Ensuring proper bonding between layers during the construction of new pavements.
• Pavement Rehabilitation: Evaluating the bonding of layers in existing pavements to determine the need for maintenance or rehabilitation.
• Quality Control: Implementing quality control measures during the production and laying of bituminous mixtures to ensure compliance with specifications.

Benefits of Using BS EN 12697-48:2021

Adopting the BS EN 12697-48:2021 standard offers numerous benefits, including:

• Enhanced Pavement Performance: By ensuring proper interlayer bonding, pavements are more likely to perform well under traffic loads and environmental conditions.
• Cost Savings: Preventing premature pavement failures reduces the need for costly repairs and maintenance.
• Safety: Well-bonded pavement layers contribute to safer driving conditions by reducing the risk of surface defects.
• Compliance: Meeting international standards helps organizations comply with regulatory requirements and industry best practices.

Conclusion

The BS EN 12697-48:2021 standard is an invaluable resource for professionals involved in the design, construction, and maintenance of bituminous pavements. By providing detailed test methods for interlayer bonding, this standard helps ensure the structural integrity and longevity of pavement layers, leading to enhanced performance, cost savings, and improved safety. Whether you are working on new pavement construction, rehabilitation projects, or quality control, the BS EN 12697-48:2021 standard is a must-have reference to achieve optimal results.

BS EN 12697-48:2021

This standard BS EN 12697-48:2021 Bituminous mixtures. Test methods is classified in these ICS categories:

• 93.080.20 Road construction materials

This document specifies test methods for determining the bond strength between an asphalt layer and other newly constructed construction layers or existing substrates in road or airfield pavements. The tests can also be applied on laboratory prepared interlayers. The normative tests described in this document are: — Torque Bond Test (TBT), generally applicable to any layer thicknesses; — Shear Bond Test (SBT), generally applicable to layer thicknesses > 15 mm; — Tensile Adhesion Test (TAT), generally applicable to layer thicknesses ≤ 15 mm. NOTE Further non normative test methods are described in informative annexes: — Annex A (informative) - Compressed Shear Bond Test (CSBT); — Annex B (informative) - Alternative Shear Bond Test (ASBT); — Annex C (informative) - Layer Adhesion Measuring Instrument (LAMI).