Earthworks - Geotechnical laboratory tests - Part 3: Methylene blue value VBS on soils and rocks

This document describes the reference method for the determination of the methylene blue value (VBS) in soils and rocks for earthworks.
The test is based on measuring the quantity of methylene blue that can be adsorbed by the material suspended in water. This quantity of absorbed methylene blue is reported by direct proportionality to the 0/50 mm ground. The soil blue value is directly related to the specific surface area of the soil particles or rocky material.
NOTE   The VBS test uses common equipment and calibration as the methylene blue test MB for aggregates (EN 933 9), but the test is applies to another granular fraction (5 mm for VBS and 2 mm for MB, respectively). Thus, the results obtained between the two tests cannot be compared in the general case.

Erdarbeiten - Geotechnische Laborversuche - Teil 3: Methylenblauwert VBS an Boden und Fels

Dieses Dokument beschreibt das Referenzverfahren für die Bestimmung des Methylenblau-Werts (VBS) in Böden und Fels für Erdarbeiten.
Die Prüfung basiert auf der Messung der Menge an Methylenblau, die von dem in Wasser gelösten Material adsorbiert werden kann. Diese Menge an adsorbiertem Methylenblau wird als direkter Proportionalwert im Verhältnis zum 0/50 mm-Boden angegeben. Der Blauwert des Bodens steht in direktem Zusammenhang mit der spezifischen Oberfläche der Bodenkörner oder des Felsmaterials.
ANMERKUNG   Das VBS Verfahren verwendet die gleiche Ausrüstung und Kalibrierung wie das Methylenblau-Verfahren MB für Gesteinskörnungen (EN 933-9), aber das Verfahren wird auf eine andere Kornklasse angewendet (5 mm bei VBS bzw. 2 mm bei MB). Daher können im allgemeinen Fall die mit den beiden Verfahren erzielten Ergebnisse nicht verglichen werden.

Terrassements - Essais géotechniques en laboratoire - Partie 3 : Valeur de bleu de méthylène VBS d’un sol ou d’une roche

Le présent document décrit la méthode de référence pour la détermination de la valeur de bleu de méthylène (VBS) d’un sol ou d’une roche pour les terrassements.
L’essai est basé sur la mesure de la quantité de bleu de méthylène qui peut être adsorbée par le matériau en suspension dans l’eau. Cette quantité est rapportée par proportionnalité directe à la fraction 0/50 mm. La valeur de bleu d’un sol est directement liée à la surface spécifique des particules du sol ou du matériau rocheux.
NOTE   L’essai VBS utilise des équipements communs et l’étalonnage décrits pour l’essai au bleu de méthylène MB des granulats (EN 933-9), mais il s’applique à une autre fraction granulaire (respectivement 5 mm pour VBS et 2 mm pour MB). Ainsi, les résultats obtenus par les deux méthodes d’essai ne sont pas comparables dans le cas général.

Zemeljska dela - Geotehnični laboratorijski preskusi - 3. del: Metilen modro vrednost VBS zemljin in kamnin

Ta dokument opisuje referenčno metodo za ugotavljanje vrednosti metilen modrega (VBS) v zemljinah in kamninah za zemeljska dela.
Preskus temelji na merjenju količine metilen modrega, ki jo lahko adsorbira material, suspendiran v vodi. Količina tako absorbiranega metilen modrega se navede z vrednostjo premo sorazmernega deleža 0/50 mm v tleh. Vrednost metilen modrega zemljin je neposredno povezana s specifično površino delcev zemljin ali kamnin.
OPOMBA:   Pri preskusu VBS se sicer uporabljata enaka oprema in način umerjanja kot pri preskusu z metilen modrim MB za agregate (EN 933-9), vendar se ta preskus uporablja za drugo frakcijo zrn (5 mm za VBS oziroma 2 mm za MB). Zato rezultati, pridobljeni z enim in drugim preskusom, običajno niso primerljivi.

General Information

Status
Published
Public Enquiry End Date
19-Sep-2020
Publication Date
21-Aug-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Aug-2022
Due Date
09-Oct-2022
Completion Date
22-Aug-2022

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SLOVENSKI STANDARD
SIST EN 17542-3:2022
01-september-2022
Zemeljska dela - Geotehnični laboratorijski preskusi - 3. del: Metilen modro
vrednost VBS zemljin in kamnin
Earthworks - Geotechnical laboratory tests - Part 3: Methylene blue value VBS on soils
and rocks
Erdarbeiten - Geotechnische Laborversuche - Teil 3: Methylenblauwert VBS an Boden
und Fels
Terrassements - Essais géotechniques en laboratoire - Partie 3 : Valeur de bleu de
méthylène VBS d’un sol ou d’une roche
Ta slovenski standard je istoveten z: EN 17542-3:2022
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN 17542-3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 17542-3:2022

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SIST EN 17542-3:2022


EN 17542-3
EUROPEAN STANDARD

NORME EUROPÉENNE

June 2022
EUROPÄISCHE NORM
ICS 93.020
English Version

Earthworks - Geotechnical laboratory tests - Part 3:
Methylene blue value VBS on soils and rocks
Terrassements - Essais géotechniques en laboratoire - Erdarbeiten - Geotechnische Laborversuche - Teil 3:
Partie 3 : Valeur de bleu de méthylène VBS d'un sol ou Methylenblauwert VBS an Boden und Fels
d'une roche
This European Standard was approved by CEN on 20 April 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17542-3:2022 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST EN 17542-3:2022
EN 17542-3:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle of the test . 6
5 Apparatus . 6
6 Reagents . 7
6.1 Dye solution . 7
6.2 Preparation of 10 g/l methylene blue solution. 7
7 Preparation of the test portions . 8
7.1 If D is greater than 50 mm . 8
max
7.2 If D is ranging between 5 mm and 50 mm. . 8
max
7.3 Washing procedure for materials > 5 mm . 8
7.3.1 Materials concerned . 8
7.3.2 Step 1 – Brushing . 8
7.3.3 Step 2 – Washing. 8
7.4 If D is smaller or equal at 5 mm. . 9
max
8 Procedure . 9
8.1 Description of the stain test . 9
8.2 Preparation of suspension . 9
8.3 Determination of the quantity of dye adsorbed . 10
9 Calculation and expression of results . 10
10 Test report . 11
Annex A (informative) Example of a test data sheet . 12
Table A.1 — Identification of the specimen tested . 12
Table A.2 – Test results . 12
Annex B (informative) Alternative size fraction . 13
Bibliography . 14

2

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SIST EN 17542-3:2022
EN 17542-3:2022 (E)
European foreword
This document (EN 17542-3:2022) has been prepared by Technical Committee CEN/TC 396
“Earthworks”, the secretariat of which is held by AFNOR.
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 December 2022, and conflicting national standards shall
be withdrawn at the latest by December 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies 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.
3

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SIST EN 17542-3:2022
EN 17542-3:2022 (E)
Introduction
The Methylene blue value V on soils and rocks is an identification parameter adopted in the
BS
classification of materials for earthworks according to EN 16907-2. It is also used for providing some
specifications for construction procedures according to EN 16907-3.
4

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SIST EN 17542-3:2022
EN 17542-3:2022 (E)
1 Scope
This document describes the reference method for the determination of the methylene blue value (V )
BS
in soils and rocks for earthworks.
The test is based on measuring the quantity of methylene blue that can be adsorbed by the material
suspended in water. This quantity of adsorbed methylene blue is reported by direct proportionality to
the 0/50 mm ground. The soil blue value is directly related to the specific surface area of the soil particles
or rocky material.
NOTE The V test uses common equipment and calibration as the methylene blue test MB for aggregates
BS
(EN 933-9), but it applies to another granular fraction (5 mm for VBS and 2 mm for MB, respectively). Thus, the
results obtained between the two tests cannot be compared in the general case.
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 ISO 17892-1, Geotechnical investigation and testing - Laboratory testing of soil - Part 1: Determination
of water content (ISO 17892-1)
EN ISO 17892-4, Geotechnical investigation and testing - Laboratory testing of soil - Part 4: Determination
of particle size distribution (ISO 17892-4)
EN ISO 835, Laboratory glassware - Graduated pipettes (ISO 835)
EN ISO 385, Laboratory glassware - Burettes (ISO 385)
EN ISO 3819, Laboratory glassware - Beakers (ISO 3819)
EN ISO 1042, Laboratory glassware - One-mark volumetric flasks (ISO 1042)
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:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
subsample
sample obtained by means of a sample reduction procedure
3.2
test portion
sample used as a whole in a single test
5

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SIST EN 17542-3:2022
EN 17542-3:2022 (E)
3.3
particle fraction
mass percentage of particles in a range of particle sizes with defined lower and upper diameters referring
to the total mass of particles in a soil volume or sample
EXAMPLES Sand fraction: mass percentage of particles with particle sizes between 0,063 mm and 2,0 mm
3.4
constant mass
successive weightings after drying at least 1h apart not differing by more than 0,1 %
3.5
maximum dimension D
max
maximum dimension of the largest elements contained in the soil
4 Principle of the test
Increments of a solution of methylene blue are added successively to a suspension of the test portion in
water. The adsorption of the dye solution by test portion is checked after each addition of solution by
carrying out a stain test on filter paper to detect the presence of free dye (dyes are the methylene blue
particles here).
When the presence of free dye is confirmed, the methylene blue value is calculated and expressed as
grams of dye adsorbed per 100 g of the 0/50 mm fraction tested.
5 Apparatus
5.1 Burette or pipette, conforming to EN ISO 385 or EN ISO 835, respectively: a dosing device to inject
volumes of methylen blue solution in steps of 10 ml, 5 ml and 2 ml and to know the total quantity injected
at ± 1 ml.
2
5.2 White Filter paper, surface mass (95 ± 5) g/m , for quantitative analysis and ash-free (<0,010 %);
thickness (0,20 ± 0,02) mm; filtration speed (75 ± 10) s; pore size (8 ± 5) µm.
5.3 Glass rod, length 300 mm; diameter (8 ± 1) mm.
5.4 Impeller agitator: having a rotational speed covering at least the range of (400 ± 40) r/min
to (600 ± 60) r/min.with three or four impeller blades of (75 ± 5) mm diameter.
5.5 Balance, with a maximum permissible measurement error less than 0,2 % of the weighed mass.
5.6 Stopwatch or stopclock, readable to 1 s.
5.7 Test sieves, 63 µm, 50 mm and 5 mm aperture, with guard sieve (if necessary).
An alternative size fraction is given in Annex B for the preparation of the test sample. Testing other size
fractions may produce results different from those obtained using the reference size fractions. The size
fraction used and the reference to Annex B should then be given in the test report.
5.8 Beaker, conforming to EN ISO 3819, glass or plastic, capacity 3 000 ml minimum and internal
diameter (155 ± 10) mm.
5.9 Flask, class A conforming to EN ISO 1042, glass, capacity 1 000 ml.
5.10 Ventilated oven, thermostatically controlled to maintain a temperature of (100 ± 5) °C.
...

SLOVENSKI STANDARD
oSIST prEN 17542-3:2020
01-september-2020
Zemeljska dela - Geotehnični laboratorijski preskusi - 3. del: Vrednost metilen
modro VBS zemljin in kamnin
Earthworks - Geotechnical laboratory tests - Part 3: Methylene blue value VBS on soils
and rocks
Erdarbeiten - Geotechnische Laborversuche - Teil 3: Methylenblauwert VBS an Boden
und Fels
Terrassements - Essais géotechniques en laboratoire - Partie 3 : Valeur de bleu de
méthylène VBS d’un sol ou d’une roche
Ta slovenski standard je istoveten z: prEN 17542-3
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
oSIST prEN 17542-3:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 17542-3:2020

---------------------- Page: 2 ----------------------
oSIST prEN 17542-3:2020


DRAFT
EUROPEAN STANDARD
prEN 17542-3
NORME EUROPÉENNE

EUROPÄISCHE NORM

July 2020
ICS 93.020
English Version

Earthworks - Geotechnical laboratory tests - Part 3:
Methylene blue value VBS on soils and rocks
Terrassements - Essais géotechniques en laboratoire - Erdarbeiten - Geotechnische Laborversuche - Teil 3:
Partie 3 : Valeur de bleu de méthylène VBS d'un sol ou Methylenblauwert VBS an Boden und Fels
d'une roche
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 396.

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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17542-3:2020 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle of the test . 6
5 Reagents . 6
5.1 Dye solution . 6
5.2 Preparation of 10 g/l methylene blue solution. 6
6 Apparatus . 7
7 Preparation of the test portions . 7
8 Procedure . 9
8.1 Description of the stain test . 9
8.2 Preparation of suspension . 9
8.3 Determination of the quantity of dye adsorbed . 9
9 Calculation and expression of results . 10
10 Test report . 10
Annex A (informative) Example of a test data sheet . 11
Bibliography . 12

2

---------------------- Page: 4 ----------------------
oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
European foreword
This document (prEN 17542-3:2020) has been prepared by Technical Committee CEN/TC 396
“Earthworks”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
3

---------------------- Page: 5 ----------------------
oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
Introduction
The Methylene blue value V on soils and rocks is an identification parameter adopted in the
BS
classification of materials for earthworks (EN 16907-2). It is also used for providing some specifications
for construction procedures (EN 16907-3).
4

---------------------- Page: 6 ----------------------
oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
1 Scope
This document describes the reference method for the determination of the methylene blue value (V )
BS
in soils and rocks for earthworks.
The test is based on measuring the quantity of methylene blue that can be adsorbed by the material
suspended in water. This quantity of absorbed methylene blue is reported by direct proportionality to
the 0/50 mm ground. The soil blue value is directly related to the specific surface area of the soil particles
or rocky material.
NOTE The V test uses common equipment and calibration as the methylene blue test MB for aggregates
BS
(EN 933-9), but the test applies to another granular fraction (5 mm for VBS and 2 mm for MB, respectively). Thus,
the results obtained between the two tests cannot be compared in the general case.
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 ISO 17892-1, Geotechnical investigation and testing — Laboratory testing of soil — Part 1:
Determination of water content (ISO 17892-1)
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 https://www.iso.org/obp
3.1
subsample
sample obtained by means of a sample reduction procedure
3.2
test portion
sample used as a whole in a single test
3.3
particle fraction
mass percentage of particles in a range of particle sizes with defined lower and upper diameters referring
to the total mass of particles in a soil volume or sample
EXAMPLES Sand fraction: mass percentage of particles with particle sizes between 0,063 mm and 2,0 mm
3.4
constant mass
successive weightings after drying at least 1h apart not differing by more than 0,1 %
3.5
D
max
maximum dimension of the largest elements contained in the soil
5

---------------------- Page: 7 ----------------------
oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
4 Principle of the test
Increments of a solution of methylene blue are added successively to a suspension of the test portion in
water. The adsorption of the dye solution by test portion is checked after each addition of solution by
carrying out a stain test on filter paper to detect the presence of free dye (dyes are the methylene blue
particles here).
When the presence of free dye is confirmed, the methylene blue value is calculated and expressed as
grams of dye adsorbed per 100 gram of the 0/50 mm fraction tested.
5 Reagents
5.1 Dye solution
Solution of standard or technical quality methylene blue, (10,0 ± 0,1) g/l.
5.2 Preparation of 10 g/l methylene blue solution
5.2.1 Use methylene blue; (C H CIN S, nH 0 (n = 2 to 3) purity ≥ 98,5 %).
16 18 3 2
5.2.2 Determine the water content W of the methylene blue powder as follows:
— weigh approximately 5 g of methylene blue powder and record the mass to the nearest 0,01 g as M ;
h
— dry this powder at (100 ± 5) °C to constant mass, at least 2 h. Cool in the desiccator, and then weigh
immediately after taking out of the desiccator. Record the dry mass to the nearest 0,01 g as M .
g
NOTE At temperatures above 105 °C, the chemical structure of the methylene blue powder can be modified.
— calculate and record the water content W to the nearest decimal place from the following equation:
b
W = (M — M )/M
b h g g

where
M is the mass of the methylene blue powder, in grams;
h
M is the mass of the dried methylene blue powder, in grams.
g
The powder used to determine the moisture content shall not be reused.
The water content shall be determined for the preparation of every new batch of dye solution.
5.2.3 Take a mass of methylene blue powder of (10 × (1 + W ) ± 0,01) g (equivalent to 10 g of dry
b
powder).
5.2.4 Warm 500 ml to 700 ml of distilled or demineralized water in a beaker. If warm water is used, the
temperature shall not exceed 50 °C.
5.2.5 Agitate the contents of the beaker whilst slowly pouring the methylene blue powder into the
water, until complete dissolution of the powder.
5.2.6 Pour into a flask of capacity (1 000 ± 5) ml, rinsing with distilled or demineralized water to ensure
complete transfer of all dye into the flask. Make sure that the flask and the water are at a temperature
of (20 ± 1) °C to conform with the calibration of the flask and add more distilled or demineralized water
to the (1 000 ± 5) ml graduation mark.
6

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oSIST prEN 17542-3:2020
prEN 17542-3:2020 (E)
5.2.7 Shake the flask to ensure complete dissolution of the powder. Keep the prepare
...

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