prEN 12350-13
(Main)Testing fresh concrete - Part 13: Bleeding test - Static and pressure
Testing fresh concrete - Part 13: Bleeding test - Static and pressure
This document specifies the procedures for determining the static and pressure bleed of fresh concrete.
The tests are suitable for specimens having a declared value of the coarsest fraction of aggregates actually used in the concrete (Dmax) not greater than 40 mm. It can be carried out in the laboratory or on site.
Prüfung von Frischbeton - Teil 13: Prüfung des Blutens - Statisch und Druck
Dieses Dokument legt die Vorgehensweisen für die Bestimmung des Blutens von Frischbeton im statischen Zustand und unter Druck fest.
Diese Prüfungen eignen sich für Probekörper mit einem Nennwert des Größtkorns der tatsächlich im Beton verwendeten Gesteinskörnung (Dmax) von höchstens 40 mm. Sie können entweder im Labor oder auf der Baustelle durchgeführt werden.
Essais pour béton frais - Partie 13 : Essai de ressuage - Statique et sous pression
Le présent document spécifie les modes opératoires pour la détermination du ressuage statique et du ressuage sous pression du béton frais.
Les essais sont adaptés aux éprouvettes ayant une valeur déclarée de la partie la plus grosse des granulats réellement utilisés dans le béton (Dmax) ne dépassant pas 40 mm. Ils peuvent être réalisés en laboratoire ou sur site.
Preizkušanje svežega betona - 13. del: Preizkus krvavitve - Statika in tlak
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2025
Preizkušanje svežega betona - 13. del: Preizkus krvavitve - Statika in tlak
Testing fresh concrete - Part 13: Bleeding test - Static and pressure
Prüfung von Frischbeton - Teil 13: Prüfung des Blutens - Statisch und Druck
Essais pour béton frais - Partie 13 : Essai de ressuage - Statique et sous pression
Ta slovenski standard je istoveten z: prEN 12350-13
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2025
ICS 91.100.30
English Version
Testing fresh concrete - Part 13: Bleeding test - Static and
pressure
Essais pour béton frais - Partie 13 : Essai de ressuage - Prüfung von Frischbeton - Teil 13: Prüfung des Blutens
Statique et sous pression - Statisch und Druck
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-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, Türkiye 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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12350-13:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions, symbols and abbreviations . 4
3.1 Terms and definitions . 4
3.2 Symbols and abbreviations . 5
4 Principle . 5
5 Static bleeding test . 5
5.1 Apparatus . 5
5.2 Procedure. 7
5.3 Expression of results . 8
5.4 Test report . 9
5.5 Precision data . 10
6 Pressure bleeding test . 10
6.1 Apparatus . 10
6.2 Procedure. 11
6.3 Number of tests . 12
6.4 Expression of results . 12
6.5 Test report . 13
6.6 Precision . 13
Bibliography . 15
European foreword
This document (prEN 12350-13:2025) has been prepared by Technical Committee CEN/TC 104
“Concrete and related products”, the secretariat of which is held by SN.
This document is currently submitted to the CEN Enquiry.
It is based on the French standard XP P 18-468 : Concrete — Testing fresh concrete — Bleed
This document is one of a series on testing concrete.
EN 12350, Testing fresh concrete, consists of the following parts:
— Part 1: Sampling and common apparatus
— 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
— Part 12: Self-compacting concrete – J-ring test
— Part 13: Bleeding test – Static and pressure.
1 Scope
This document specifies the procedures for determining the static and pressure bleed of fresh concrete.
The tests are suitable for specimens having a declared value of the coarsest fraction of aggregates actually
used in the concrete (D ) not greater than 40 mm. It can be carried out in the laboratory or on site.
max
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 12350-1, Testing fresh concrete — Part 1: Sampling and common apparatus
EN 12350-5, Testing fresh concrete — Part 5: Flow table test
EN 12350-6, Testing fresh concrete — Part 6: Density
EN 12350-8, Testing fresh concrete — Part 8: Self-compacting concrete — Slump-flow test
EN 12390-2, Testing hardened concrete — Part 2: Making and curing specimens for strength tests
EN ISO 10414-1, Petroleum and natural gas industries — Field testing of drilling fluids — Part 1:
Water-based fluids (ISO 10414-1)
3 Terms, definitions, symbols and abbreviations
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 Terms and definitions
3.1.1
static bleed
the upwards flow of water of fresh concrete after placing caused by the settlement of the solid materials
within the mass
3.1.2
bleeding rate
accumulated mass of bleed water during a defined period of time divided by the duration of this period
3.1.3
total bleed
accumulated mass of the bleed water during the duration of the test
3.1.4
pressure bleed
the release of water from fresh concrete after placing caused by the application of a pressure on the
concrete mass placed in a special cell
3.2 Symbols and abbreviations
For the purposes of this document, the following common symbols apply.
D density according to EN 12350-6 kg/m3
ρ
volume of the collected water (ml) at time ti
Vi
V volume of the collected water (ml) up to time ti
ci
V total collected water volume (ml)
ctotal
m mass of the container (g)
m mass of the sample and container (g) at the beginning of the test
m mass of the sample and container (g) at the end of the test
B total bleed
T
T starting time of concrete production (1st water-cement contact)
t test starting time
ti time at which a volume of water Vi is collected
V volume of the concrete test specimen (l)
conc
B bleeding rate (ml/min)
R
m mass of the filtration cell (g)
1p
m mass of the sample and filtration of cell (g) at the beginning of the test
2p
m mass of the graduated cylinder (g)
3p
m mass of the graduated cylinder and filtered water (g)
4p
PB pressure bleed of the test specimen (n) at the end of each pressure
n
bleeding test (mm/m)
4 Principle
In the static bleeding test, the water on the surface of the fresh concrete is collected at different time
intervals to determine the bleeding rate, and until the end of bleeding to determine the total bleed of
concrete.
In the pressure bleeding test, the water extracted from a concrete sample subject to a pressure of 1 bar
(0,1 MPa) for a period of 3 min is collected to determine the pressure bleed of the concrete.
This value may allow to estimate the maximum settlement of the concrete.
5 Static bleeding test
5.1 Apparatus
5.1.1 Common apparatus
The apparatus listed below for the execution of this test method shall be in accordance with the
specification given in EN 12350-1 and as specified below.
5.1.2 Cylindrical container
Watertight, of sufficient rigidity to retain its shape, made from a non-absorbent material not readily
attacked by cement paste, having a smooth internal face.
The reference container shall have an internal diameter of 255 ± 5 mm and internal height of 280 ± 5mm.
NOTE Where a container having different dimensions is used the test might not produce the same result as
that obtained when using the reference container.
5.1.3 Container cover
Made of the same material as the container or of glass, plexiglass or plastic.
5.1.4 Plastic film
Placed between the top part of the container and the cover to minimize water evaporation from the
concrete.
Any contact between the plastic film and the surface of the concrete shall be avoided.
5.1.5 Shim
Between 30 and 50 mm thick, strong enough not to deform under the weight of the concrete and
container.
5.1.6 Means of compacting the concrete, which may be one of the following
a) internal (poker) vibrator;
b) vibrating table;
c) compacting rod;
d) compacting bar.
5.1.7 Balance or scales
For the determination of the mass of the concrete sample having a maximum instrumental measurement
uncertainty of 0.1 % of the mass.
5.1.8 Balance or scales
For the determination of bleed water mass having a maximum instrumental measurement uncertainty of
0,5 g.
5.1.9 Pipette or similar instrument
Having a capacity of up to 10 ml, graduated to 0,5 ml.
5.1.10 Test tube
Having a capacity of 100 ml.
5.1.11 Scoop
5.1.12 Timer or clock
5.1.13 Steel trowel or float
5.1.14 Thermometer
5.2 Procedure
5.2.1 General
The test can be carried out in a laboratory or on site. If carried out on site, the container should be kept
in the shade and placed on a horizontal platform or floor free from vibration.
The sample shall be taken in accordance with EN 12350-1.
5.2.2 Container mass
Weigh the container and record the value (m ) to the nearest g.
5.2.3 Filling and compacting
If the purpose of the test is to give information on the behaviour of the concrete after placing, and if the
filling and compacting of the concrete are carried out in the laboratory, it shall be done at a time after
batching of the concrete reflecting the time of delivery and use on site, but no greater than 2 hours except
where specific consistence retention times had been specified.
Determine the consistence (slump, flow or slump-flow) of the concrete in accordance with EN 12350-2,
EN 12350-5 or EN 12350-8.
Measure the fresh density D of the concrete in accordance with EN 12350-6 expressed in kg/m .
ρ
Fill the container to a height of 250 ± 5 mm.
Compact the concrete according to EN 12390-2 for the minimum duration necessary to achieve full
compaction of the concrete.
NOTE 1 It is important to avoid over-vibration, which might cause loss of entrained air.
NOTE 2 The method used might have an influence on the amount of bleed.
In the case of self-compacting concrete, the container shall be filled in one operation and no compaction
s
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