oSIST prEN 12350-8:2008
(Main)Testing fresh concrete - Part 8: Self-compacting concrete - Slump-flow test
Testing fresh concrete - Part 8: Self-compacting concrete - Slump-flow test
The document specifies the procedure for determining the slump-flow and t500 time for self-compacting concrete. The test is not suitable when the maximum size of the aggregate exceeds 40 mm.
Prüfung von Frischbeton - Teil 8: Selbstverdichtender Beton - Setzfließversuch
Essai pour béton frais - Partie 8: Béton auto-plaçant - Essai d'étalement au cône d'Abrams
Preskušanje svežega betona - 8. del: Samozgoščevalni beton - Preskus razleza s posedom
General Information
- Status
- Not Published
- Public Enquiry End Date
- 27-Feb-2008
- Technical Committee
- BBB - Concrete, reinforced concrete and prestressed concrete
- Current Stage
- 98 - Abandoned project (Adopted Project)
- Start Date
- 20-Dec-2010
- Due Date
- 25-Dec-2010
- Completion Date
- 20-Dec-2010
- Directive
- 89/106/EEC - Construction products
Relations
- Replaced By
SIST EN 12350-8:2010 - Testing fresh concrete - Part 8: Self-compacting concrete - Slump-flow test - Effective Date
- 01-Dec-2010
Overview
prEN 12350-8 - Testing fresh concrete - Part 8: Self-compacting concrete - Slump‑flow test (CEN draft) defines the standard procedure for measuring the slump‑flow and t500 time of self‑compacting concrete (SCC). The method assesses SCC flowability in the absence of obstructions and provides indicators of filling ability and relative viscosity. The test is not suitable when the maximum aggregate size exceeds 40 mm.
Key topics and technical requirements
- Scope: Procedure for slump‑flow (SF) and optional t500 measurement; based on the EN 12350‑2 slump cone method.
- Principle: Concrete is poured into a conical mould; on lifting the cone the spread diameter(s) and the time to reach 500 mm (t500) are recorded. SF = mean of the largest spread diameter (dm) and the perpendicular diameter (dr).
- Apparatus:
- Flat metal baseplate (min. 900 × 900 mm) with scribed centre cross and circles of (210 ±1) mm and (500 ±1) mm.
- Slump cone as per EN 12350‑2; rule or tape (≥1000 mm, ≤5 mm divisions); stopwatch (0.1 s); spirit level; container (≥10 L).
- Optional weighted collar (≥9 kg) to assist one‑person testing.
- Procedure highlights:
- Baseplate must be horizontal and dampened (not wet).
- Fill cone in one operation without vibration; lift vertically in one movement.
- Start timing for t500 immediately when cone ceases contact with plate; t500 may be omitted if not requested.
- Record dm and dr to nearest 10 mm; if |dm − dr| > 50 mm, repeat the test (two consecutive failures indicate the test is unsuitable).
- Check and report any segregation (ring of paste/mortar or coarse aggregate concentration).
- Results & reporting:
- Slump‑flow SF in mm (nearest 10 mm); t500 reported to nearest 0.5 s.
- Test report must include sample ID, location, date/time, SF, segregation indication, concrete age (if known), deviations and responsible person’s declaration.
- Precision: Repeatability and reproducibility values are provided (example: for SF 600–750 mm, r = 42 mm, R = 43 mm; for t500 in 3.5–6.0 s, r = 1.18 s, R = 1.18 s).
Applications and users
- Practical uses: mix design validation, pre‑placement checks, on‑site QC of SCC, comparative assessment of filling ability and flow rate, detection of segregation risk.
- Typical users: concrete testing laboratories, contractors, precast and ready‑mix producers, site QC/QA engineers, specification authors, and researchers working with SCC.
Related standards
- EN 12350 series (Testing fresh concrete) - Parts 1 (sampling), 2 (slump test), 9–12 (other SCC tests: V‑funnel, L‑box, sieve segregation, J‑ring).
- ISO 5725 (precision of test methods) is referenced for repeatability/reproducibility.
Keywords: prEN 12350‑8, slump‑flow test, self‑compacting concrete, SCC testing, t500 time, fresh concrete testing, EN 12350.
Frequently Asked Questions
oSIST prEN 12350-8:2008 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Testing fresh concrete - Part 8: Self-compacting concrete - Slump-flow test". This standard covers: The document specifies the procedure for determining the slump-flow and t500 time for self-compacting concrete. The test is not suitable when the maximum size of the aggregate exceeds 40 mm.
The document specifies the procedure for determining the slump-flow and t500 time for self-compacting concrete. The test is not suitable when the maximum size of the aggregate exceeds 40 mm.
oSIST prEN 12350-8:2008 is classified under the following ICS (International Classification for Standards) categories: 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN 12350-8:2008 has the following relationships with other standards: It is inter standard links to SIST EN 12350-8:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN 12350-8:2008 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
oSIST prEN 12350-8:2008 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-januar-2008
3UHVNXãDQMHVYHåHJDEHWRQDGHO6DPR]JRãþHYDOQLEHWRQ3UHVNXVUD]OH]DV
SRVHGRP
Testing fresh concrete - Part 8: Self-compacting concrete - Slump-flow test
Prüfung von Frischbeton - Teil 8: Selbstverdichtender Beton - Setzfließversuch
Essai pour béton frais - Partie 8: Béton auto-plaçant - Essai d'étalement au cône
d'Abrams
Ta slovenski standard je istoveten z: prEN 12350-8
ICS:
91.100.30
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2007
ICS 91.100.30
English Version
Testing fresh concrete - Part 8: Self-compacting concrete -
Slump-flow test
Essai pour béton frais - Partie 8: Béton auto-plaçant - Essai Prüfung von Frischbeton - Teil 8: Selbstverdichtender
d'étalement au cône d'Abrams Beton - Setzfließversuch
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 104.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12350-8:2007: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Principle.4
4 Apparatus .4
4.1 Baseplate .4
4.2 Rule or measuring tape.5
4.3 Stop watch.5
4.4 Spirit level.5
4.5 Container .5
4.6 Collar (optional) .5
5 Test sample .7
6 Procedure .7
7 Test result.7
8 Test report .8
9 Precision.8
Foreword
This document (prEN 12350-8:2007) has been prepared by Technical Committee CEN/TC 104 “Concrete and
related products”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This standard is based on the results from the EU-project “Testing-SCC” under the 5th Frame Programme
(GRD2-2000-30024/G6RD-CT-2001-00580).
Owing to its significant advantages in the improvement of construction quality and working environment, self-
compacting concrete (SCC) has been more widely accepted by the construction owners. The use of SCC in
practical concrete construction is stably increasing. Since SCC has to give satisfactory in-situ properties
(perfect filling of the mould and embedment of the reinforcement, homogeneity and full compaction) without
vibration, the proper methods for testing the workability of fresh SCC are very important. The workability of
fresh SCC should basically include three key properties: filling ability, passing ability and resistance to
segregation. It is desirable, especially in the case of new constituents or new concrete compositions, to test
the workability of fresh SCC before casting in place.
A number of test methods are available for testing fresh SCC. Most of the commonly used test methods were
evaluated in the recently closed EU-project “Testing-SCC” under the 5th Frame Programme (GRD2-2000-
30024/G6RD-CT-2001-00580). According to the results from this EU project, it seems no single test method
can completely cover all the three key properties. Nevertheless any test method should at least be correlated
to the practical situation and give consistent results in order to provide reliable data for judgment of concrete
workability.
This standard is one of a series concerned with testing fresh concrete.
This series EN 12350 includes the following parts:
EN 12350 Testing fresh concrete
Part 1: Sampling;
Part 2: Slump test;
Part 3: Vebe test;
Part 4: Degree of compactability;
Part 5: Flow table test;
Part 6: Density;
Part 7: Air content — Pressure methods;
Part 8: Self compacting concrete - Slump-flow test;
Part 9: Self compacting concrete - V-funnel test;
Part 10: Self compacting concrete - L-box test;
Part 11: Self compacting concrete - Sieve segregation test;
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