DIN EN 12274-4 2003-04 PDF

Full title and description

STB DIN EN 12274-4:2003-04 — Slurry surfacing — Test methods — Part 4: Determination of cohesion of the mix. This document specifies a laboratory test procedure to determine the minimum cohesion of a bituminous slurry surfacing mix so that set time and trafficability time can be assessed for use in surface layers (roads, streets and other trafficked paved areas).

Abstract

The standard defines apparatus, sample preparation, calibration and a stepwise test method to measure the cohesion (minimum internal bond) of a slurry surfacing mixture. Results are used to identify the set time and the time after which the treated surface can safely receive traffic (trafficability). EN 12274-4:2003 was later updated and replaced by a 2018 edition; national adoptions (DIN, STB/related national bodies) implemented the EN text.

General information

• Status: Superseded / withdrawn in favour of EN 12274-4:2018 (national adoptions withdrawn or updated to the 2018 edition).
• Publication date: 2003 (designation often shown as 2003-04 / April 2003 for the EN adoption; national publication dates vary by body).
• Publisher: European Committee for Standardization (CEN); issued as a harmonised EN and adopted by national bodies (e.g. DIN for Germany and national designations such as STB/STN/SIST depending on country).
• ICS / categories: 93.080.20 — Road construction materials (pavement surfacing materials and test methods).
• Edition / version: EN 12274-4:2003 (original EN edition); later edition EN 12274-4:2018 supersedes it. National transpositions carry national prefixes (e.g. DIN EN 12274-4).
• Number of pages: Typically 15–18 pages depending on national publication format.

Scope

This part of EN 12274 specifies a laboratory test to determine the minimum cohesion of slurry surfacing and thin cold-laid asphalt-type surface mixes. The scope covers materials intended for road surface layers (streets, roads and similar traffic areas) and provides a procedure to determine set time and trafficability time under controlled conditions; it does not replace full field trials but supports mix design and quality control. National adoptions follow the EN text with minor editorial or national foreword changes.

Key topics and requirements

• Definition of test principle for measuring minimum cohesion of slurry mixes (aims to identify set time and trafficability time).
• Specification of materials and apparatus required (mix components, test moulds, rubber foot specification, drying/conditioning procedures, calibration steps).
• Sample preparation and conditioning (mixing, placing in moulds, controlled curing/drying and temperature control for reproducible results).
• Detailed step-by-step test method including number of replicates, observation points and criteria for determining cohesion and set/trafficability times.
• Expression of results, calculation methods and reporting requirements (test report contents and assessment of anomalous samples).
• Notes on precision, repeatability and the option to use automatic equipment where appropriate (later edition refines precision and some apparatus details).

Typical use and users

The standard is used by materials laboratories, pavement engineers, highway authorities, contractors and slurry surfacing manufacturers for mix design, quality control and assessment of trafficability after application. It supports specification development, acceptance testing and comparative evaluation of slurry surfacing products prior to or during field trials.

Related standards

Related documents include other parts of EN 12274 (parts on sampling, residual binder content, consistency) and complementary EN standards on slurry surfacing requirements and test methods; national adoptions (BS EN, DIN EN, SIST/STN/UNE etc.) implement the EN series. The 2003 edition is linked in standards lists to EN 12274-1, -2 and -3 and to EN 12273 (requirements) and was replaced by EN 12274-4:2018.

Keywords

slurry surfacing, slurry seal, cohesion, set time, trafficability, test method, bituminous slurry, cold-applied asphalt, pavement materials, EN 12274-4, DIN EN, national adoption.

FAQ

Q: What is this standard?

A: EN 12274-4:2003 (adopted nationally as DIN EN 12274-4:2003-04 and other national prefixes) is a CEN test-method standard titled "Slurry surfacing — Test methods — Part 4: Determination of cohesion of the mix" for laboratory measurement of minimum cohesion of slurry mixes.

Q: What does it cover?

A: It covers apparatus, sample preparation, calibration, test procedure and reporting for determining minimum cohesion and thereby estimating set time and trafficability for slurry surfacing and thin cold-laid surface mixes used in pavement layers.

Q: Who typically uses it?

A: Materials testing laboratories, highway and pavement engineers, contracting companies applying slurry surfacings, product manufacturers and national standards bodies for mix design, quality control and acceptance testing.

Q: Is it current or superseded?

A: The 2003 edition has been superseded by EN 12274-4:2018; national adoptions based on the 2003 text were withdrawn or updated to the 2018 edition (dates of national withdrawal/publication vary by country). Users should refer to EN 12274-4:2018 (or the current national transposition) for the latest normative text.

Q: Is it part of a series?

A: Yes — it is Part 4 of the EN 12274 series of slurry surfacing test methods; other parts cover related test procedures such as sampling, residual binder content and consistency. The EN 12274 family is intended to be used together with related EN standards on slurry surfacing requirements.

Q: What are the key keywords?

A: Cohesion, slurry surfacing, set time, trafficability, bituminous slurry, test method, cold-laid asphalt, pavement materials, EN 12274-4.