DD CEN TS 15324-2008 PDF

Full title and description

STB DD CEN TS 15324:2008 — Bitumen and bituminous binders. Determination of equiviscous temperature based on low shear viscosity using a dynamic shear rheometer in low frequency oscillation mode. This technical specification defines a rheological test method to determine the equiviscous temperature of bituminous binders by measuring low-shear viscosity in an oscillatory (low-frequency) mode on a dynamic shear rheometer (DSR).

Abstract

This CEN Technical Specification describes instrumentation, sample preparation, test procedure, measurement settings and calculation/reporting rules for determining an equiviscous temperature for bitumens and bituminous binders using a DSR operated at low-frequency oscillation. The method supports binder characterization for formulation, comparison and performance-related assessment of asphalt binders.

General information

• Status: National adoptions exist (e.g. DD, STB); some catalogues list the document as withdrawn or a pre-standard in national systems — status can vary by national body and adoption.
• Publication date: 2008 (CEN/TS 15324:2008; national publication dates around July–August 2008).
• Publisher: CEN (European Committee for Standardization) — adopted and published by national bodies (examples: BSI, DIN, LST listings).
• ICS / categories: 75.140 (Waxes, bituminous materials and other petroleum products); 91.100.50 (Binders. Sealing materials).
• Edition / version: 2008 (Technical Specification, CEN/TS 15324:2008).
• Number of pages: National publications list between about 22 and 28 pages depending on national formatting (examples: 22–28 pages reported by different publishers).

Scope

The specification provides a laboratory procedure to determine the equiviscous temperature of bitumen and bituminous binders by measuring low-shear viscosity using a dynamic shear rheometer in a low-frequency oscillation mode. It covers required test equipment, sample conditioning, measurement sequence, data processing and reporting of the equiviscous temperature value for use in binder comparison and characterization. The method is intended for use with paving and industrial bituminous binders.

Key topics and requirements

• Definition of equiviscous temperature and its significance for binder rheology.
• Requirements for dynamic shear rheometer (DSR) operation in low-frequency oscillation mode.
• Sample preparation, conditioning and geometry (gap, plate/parallel configuration) guidance.
• Low-shear viscosity measurement protocol and selection of frequency/strain amplitude.
• Calculation method to derive equiviscous temperature from measured viscosity data and reporting format.
• Quality and repeatability considerations, including control of temperature ramp and instrument calibration.

Typical use and users

Used by materials laboratories, road and pavement engineers, binder manufacturers, quality control teams and research organizations working with asphalt binders. Typical applications include binder characterization during formulation, comparative testing for procurement/specification, and research into temperature-dependent rheological behavior of bitumens.

Related standards

Other CEN technical specifications and standards on binder rheology and viscosity (for example, related CEN TS/EN methods for zero-shear viscosity and other rheological tests) and national adoptions of CEN/TS 15324. Laboratories typically use this method alongside other binder test standards (e.g., standards addressing zero-shear viscosity, complex shear modulus tests and penetration/softening point methods) for comprehensive binder assessment.

Keywords

bitumen; bituminous binders; equiviscous temperature; low shear viscosity; dynamic shear rheometer; DSR; low-frequency oscillation; rheology; asphalt binder testing; binder characterization.

FAQ

Q: What is this standard?

A: It is a CEN Technical Specification (CEN/TS 15324:2008) that specifies a rheological test method to determine the equiviscous temperature of bituminous binders using low-shear viscosity measurements on a dynamic shear rheometer.

Q: What does it cover?

A: The document covers equipment and instrument requirements, sample preparation and conditioning, the low-frequency oscillatory test procedure, data processing to determine equiviscous temperature, and reporting requirements for the result.

Q: Who typically uses it?

A: Materials and pavement testing laboratories, binder manufacturers, road authorities and researchers involved in asphalt binder characterization and specification.

Q: Is it current or superseded?

A: The specification was published in 2008 (CEN/TS 15324:2008). National catalogues show mixed status: some listings treat it as a published/national-adopted document while other sources indicate withdrawal or pre-standard status in specific national systems. Users should verify the current legal/adoption status with their national standards body before relying on the document for regulatory or procurement purposes.

Q: Is it part of a series?

A: It is one of a set of CEN standards/technical specifications addressing bitumen and bituminous binder rheology and viscosity (other related TS/EN documents address zero-shear viscosity, complex modulus, and complementary binder test methods). National adoptions (DD, STB, etc.) reflect the CEN origin.

Q: What are the key keywords?

A: Equiviscous temperature; low shear viscosity; dynamic shear rheometer; bitumen; binder; rheology; asphalt.