Bituminous mixtures - Test methods - Part 56: Specimen preparation by static compaction

This document specifies a method for compacting cylindrical specimens of bituminous mixtures, to be used for subsequent testing. A given mass of bituminous mixture is compacted in a cylindrical mould by applying static compression loads on the top and the bottom of the specimen.

Asphalt - Prüfverfahren - Teil 56: Probekörperherstellung durch Statische Verdichtung

Dieses Dokument legt ein Verfahren zur Verdichtung von zylindrischen Asphalt-Probekörpern fest, die für nachfolgende Prüfungen zu verwenden sind. Eine gegebene Menge Asphalt wird in einer zylindrischen Form durch Aufbringen statischer Verdichtungslasten auf die Ober- und Unterseite des Probekörpers verdichtet.

Mélanges bitumineux - Méthodes d’essai - Partie 56 : Confection d’éprouvettes par compacteur statique

Ce document spécifie une méthode de compactage d’éprouvettes cylindriques de mélanges bitumineux, en vue d’essais ultérieurs. Une masse donnée de mélange bitumineux est compactée dans un moule cylindrique par application d'une charge de compression statique sur le dessus et le dessous de l’éprouvette.

Bitumenske zmesi - Preskusne metode - 56. del: Priprava preskušancev s statičnim zgoščevanjem

Ta evropski standard določa metodo za zgoščevanje valjastih preskušancev bitumenskih zmesi, ki se uporablja za naknadno preskušanje. Določena masa bitumenske zmesi se zgosti v valjastem kalupu pod statično tlačno obremenitvijo z zgornje in spodnje strani preskušanca.

General Information

Status
Published
Publication Date
24-Sep-2019
Withdrawal Date
30-Mar-2020
Technical Committee
CEN/TC 227 - Road materials
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
18-Jun-2025
Completion Date
23-Sep-2025

Overview

EN 12697-56:2019 is a European standard developed by CEN focusing on the preparation of bituminous mixture specimens by static compaction for subsequent testing. It specifies a standardized laboratory method to compact cylindrical specimens by applying static compression loads on both the top and bottom plates of a cylindrical mould. This process ensures consistent specimen preparation for reliable performance evaluation of bituminous mixtures used in road construction.

The standard targets quality control and research organizations working with asphalt and bituminous materials, providing detailed instructions on materials, apparatus, compaction parameters, and specimen preparation to achieve reproducible results.

Key Topics

  • Specimen Dimensions: Cylindrical specimens with diameters between 80 mm and 160 mm, with height at least twice the diameter, matching aggregate size requirements.
  • Compaction Apparatus: Non-corrosive steel moulds and compaction plates designed for static double-sided compaction; includes features for drainage to handle water content in mixtures.
  • Compaction Force and Stress: Recommended compaction stress is 5 MPa; forces calculated precisely using specimen diameter to maintain uniform compaction.
  • Temperature Control: Specimens and apparatus must be maintained at reference compaction temperatures during preparation and compaction as per EN 12697-35.
  • Compaction Process: Static compaction involves applying constant force for a set time (recommended 300 ± 5 seconds), with controlled vertical loading and release for precise specimen formation.
  • Specimen Handling: Procedures for demoulding, cooling, and conditioning specimens based on mixture type, including special treatment for emulsions subject to curing.
  • Reporting Requirements: Comprehensive test reports specifying mixture type, dimensions, compaction parameters, temperature, and dates for traceability and quality assurance.

Applications

EN 12697-56:2019 is essential for laboratories and quality control facilities in:

  • Road Construction and Maintenance: Preparing test specimens for mechanical and durability testing of asphalt mixes to ensure compliance with performance specifications.
  • Material Research and Development: Facilitating laboratory analysis on newly formulated bituminous mixtures to optimize their properties.
  • Quality Assurance: Providing a uniform specimen preparation procedure to allow consistent and comparable testing outcomes across different laboratories and projects.
  • Production Control: Enabling plant or field sampling followed by standardized laboratory compaction to verify batch quality before application.
  • Performance Evaluation: Serving as a foundational step before conducting compressive strength, indirect tensile, and other mechanical tests on bituminous specimens.

Related Standards

For comprehensive testing and preparation of bituminous mixtures, EN 12697-56:2019 is often used in conjunction with:

  • EN 12697-27: Sampling of bituminous mixtures for testing.
  • EN 12697-35: Laboratory mixing of bituminous mixtures.
  • EN 12697-54: Curing of specimens, especially for mixtures containing bitumen emulsion.

These complementary standards ensure a full workflow from sampling through mixing, specimen preparation, curing, and testing, promoting harmonization in asphalt material evaluation.


Keywords: EN 12697-56 2019, bituminous mixtures, static compaction, specimen preparation, asphalt testing, road construction materials, cylindrical specimen compaction, compaction force, compaction temperature, bituminous mixture testing standard, CEN, European standard for asphalt.

Frequently Asked Questions

EN 12697-56:2019 is a standard published by the European Committee for Standardization (CEN). Its full title is "Bituminous mixtures - Test methods - Part 56: Specimen preparation by static compaction". This standard covers: This document specifies a method for compacting cylindrical specimens of bituminous mixtures, to be used for subsequent testing. A given mass of bituminous mixture is compacted in a cylindrical mould by applying static compression loads on the top and the bottom of the specimen.

This document specifies a method for compacting cylindrical specimens of bituminous mixtures, to be used for subsequent testing. A given mass of bituminous mixture is compacted in a cylindrical mould by applying static compression loads on the top and the bottom of the specimen.

EN 12697-56:2019 is classified under the following ICS (International Classification for Standards) categories: 93.080.20 - Road construction materials. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 12697-56:2019 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-december-2019
Bitumenske zmesi - Preskusne metode - 56. del: Priprava preskušancev s
statičnim zgoščevanjem
Bituminous mixtures - Test methods - Part 56: Specimen preparation by static
compaction
Asphalt - Prüfverfahren - Teil 56: Probekörperherstellung durch Statische Verdichtung
Mélanges bitumineux - Méthodes d’essai - Partie 56: Confection d’éprouvettes par
compacteur statique
Ta slovenski standard je istoveten z: EN 12697-56:2019
ICS:
93.080.20 Materiali za gradnjo cest Road construction materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12697-56
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 93.080.20
English Version
Bituminous mixtures - Test methods - Part 56: Specimen
preparation by static compaction
Mélanges bitumineux - Méthodes d'essai - Partie 56 : Asphalt - Prüfverfahren - Teil 56:
Confection d'éprouvettes par compacteur statique Probekörperherstellung durch Statische Verdichtung
This European Standard was approved by CEN on 17 June 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-56:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 5
5 Materials . 5
6 Apparatus . 5
7 Preparation of test specimens . 7
7.1 Compaction stress and compaction force. 7
7.2 Compaction temperature . 7
7.3 Mixture sample preparation . 7
7.4 Preparation of compaction equipment . 7
7.5 Compaction process . 8
7.5.1 Compaction force . 8
7.5.2 Dismantling and demoulding . 8
8 Test report . 8

European foreword
This document (EN 12697-56:2019) has been prepared by Technical Committee CEN/TC 227 “Road
materials”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2020, and conflicting national standards shall
be withdrawn at the latest by March 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
A list of all parts in the EN 12697 series can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document specifies a method for compacting cylindrical specimens of bituminous mixtures, to be
used for subsequent testing. A given mass of bituminous mixture is compacted in a cylindrical mould by
applying static compression loads on the top and the bottom of the specimen.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12697-27, Bituminous mixtures - Test methods - Part 27: Sampling
EN 12697-35, Bituminous mixtures - Test methods - Part 35: Laboratory mixing
EN 12697-54, Bituminous mixtures - Test methods - Part 54: Curing of specimen for test of mixtures with
bitumen emulsion
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
compaction stress
σ
comp
desired vertical stress applied on top and bottom of compaction plates, expressed in MPa
3.2
compaction force
F
comp
desired vertical force applied on top and bottom of compaction plates to achieve the compaction stress
σ , expressed in kN
comp
3.3
compaction time
t
comp
timespan within the compaction stress is held constant
3.4
specimen dimensions
dimensions of the specimen are defined by their diameter d and their height h, expressed in mm
4 Principle
A
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...