SIST EN 17685-1:2023

Earthworks - Chemical tests - Part 1: Determination of loss on ignition

This document describes a method for the determination of the loss on ignition (wLOI) of fine, intermediate, composite and coarse soils, organic soils and anthropogenic materials (according to EN 16907-2) after ignition under air at 550°C.
The loss of mass suffered by these materials at 550 °C is usually due to the release of volatile compounds, water (absorbed, crystalized or structural) and gases from decomposition of organic matter and inorganic substances such as sulfur, sulphides or hydroxides (e.g. H2O, CO2, SO2).
A method is given in Annex B in order to estimate the organic matter content (COM) from the value of wLOI for clayed soils.

Erdarbeiten - Chemische Prüfverfahren - Teil 1: Bestimmung des Glühverlusts

Dieses Dokument definiert ein Verfahren zur Bestimmung des Glühverlustes (wLOI) von feinkörnigen, gemischtkörnigen, zusammengesetzten und grobkörnigen Böden, organischen Böden und anthropogenen Materialien (nach EN 16907-2) nach Entzündung an Luft bei 550 °C.
Der Massenverlust, den diese Materialien bei 550 °C aufweisen, ist in der Regel auf die Freisetzung von flüchtigen Verbindungen, Wasser (absorbiert, kristallisiert oder gebunden) und Gasen aus der Zersetzung von organischer Substanz und anorganischen Stoffen wie Schwefel, Sulfiden oder Hydroxiden (z. B. H2O, CO2, SO2) zurückzuführen.
In Anhang B wird ein Verfahren angegeben, um den Gehalt an organischer Substanz (COM) aus dem Wert wLOI für tonige Böden abzuschätzen.

Terrassements - Essais chimiques - Partie 1 : Détermination de la perte au feu

Ce document décrit une méthode pour la détermination de la perte au feu (wLOI) des sols fins, intermédiaires, composites et grossiers, des sols organiques et des matériaux anthropiques (selon la norme EN 16907-2) après calcination sous air à 550°C.
La perte de masse subie par ces matériaux à 550 °C est généralement due à la libération de composés volatils, d'eau (absorbée, cristallisée ou structurelle) et de gaz provenant de la décomposition de la matière organique et de substances inorganiques telles que le soufre, les sulfures ou les hydroxydes (par exemple H20, CO2, SO2).
Une méthode est donnée dans l'annexe B afin d'estimer la teneur en matière organique (COM) à partir de la valeur du wLOI pour les sols argileux.

Zemeljska dela - Kemijski preskusi - 1. del: Določanje deleža žaroizgube

Ta dokument opisuje metodo za določanje žaroizgube (wLOI) finih, srednje finih, kompozitnih in grobih zemljin, organskih zemljin in antropogenih materialov (v skladu s standardom EN 16907-2) po vžigu pri temperaturi zraka 550 °C.
Izguba mase teh materialov pri 550 °C je običajno posledica sprostitve hlapnih spojin, vode (absorbirane, kristalizirane ali strukturne) in plinov pri razgradnji organskih in anorganskih snovi, kot so žveplo, sulfidi ali hidroksidi (npr. H2O, CO2, SO2).
V dodatku B je navedena metoda za ocenjevanje vsebnosti organskih snovi (COM) iz vrednosti žaroizgube za glinaste zemljine.

General Information

• Status: Published
• Public Enquiry End Date: 14-Sep-2021
• Publication Date: 12-Jun-2023
• ICS: 13.080.99 - Other standards related to soil quality
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: ZEM - Earthworks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Jun-2023
• Due Date: 14-Aug-2023
• Completion Date: 13-Jun-2023
• Ref Project: EN 17685-1:2023 - Earthworks - Chemical tests - Part 1: Determination of loss on ignition

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 17685-1:2023
01-julij-2023
Zemeljska dela - Kemijski preskusi - 1. del: Določanje deleža žaroizgube
Earthworks - Chemical tests - Part 1: Determination of loss on ignition
Erdarbeiten - Chemische Prüfverfahren - Teil 1: Bestimmung des Glühverlusts
Terrassements - Essais chimiques - Partie 1 : Détermination de la perte au feu
Ta slovenski standard je istoveten z: EN 17685-1:2023
ICS:
13.080.99 Drugi standardi v zvezi s Other standards related to
kakovostjo tal soil quality
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN 17685-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17685-1:2023

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SIST EN 17685-1:2023


EN 17685-1
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2023
EUROPÄISCHE NORM
ICS 13.080.99; 93.020
English Version

Earthworks - Chemical tests - Part 1: Determination of loss
on ignition
Terrassements - Essais chimiques - Partie 1 : Erdarbeiten - Chemische Prüfverfahren - Teil 1:
Détermination de la perte au feu Bestimmung des Glühverlusts
This European Standard was approved by CEN on 23 January 2023.

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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17685-1:2023 E
worldwide for CEN national Members.

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SIST EN 17685-1:2023
EN 17685-1:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviations and symbols . 5
5 Principle of the test . 6
6 Apparatus . 6
7 Pretreatment . 7
8 Test procedure . 8
9 Expression of results and determination of the loss on ignition . 8
10 Test report . 9
Annex A (informative) Example of a test data sheet .10
Annex B (informative) Estimation of the organic matter content of clayey soils .11
Bibliography .12

2

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SIST EN 17685-1:2023
EN 17685-1:2023 (E)
European foreword
This document (EN 17685-1:2023) 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 September 2023, and conflicting national standards shall
be withdrawn at the latest by September 2023.
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, Türkiye and the United
Kingdom.
3

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SIST EN 17685-1:2023
EN 17685-1:2023 (E)
Introduction
The method described in this document has been developed from EN 15935:2021 which was prepared
by CEN/TC 444 “Environmental characterization of solid matrices”. Adjustments were made to make the
method more suitable for the materials used in earthworks, particularly for the pretreatment of the
sample.
This document specifies a method for the determination of the loss on ignition (w ) of fine, intermediate,
LOI
composite and coarse soils, organic soils and anthropogenic materials (according to EN 16907-2) after
ignition under air at 550°C. A method is given in Annex B in order to estimate the organic matter content
(C ) from the value of w . The organic matter content C is used for the classification of soils with
OM LOI OM
organic matter content C greater than 2 % according EN 16907-2 (Table 4 in EN 16907-2:2018).
OM
Other methods to estimate the organic content is e.g. wet burning with H O or KMnO .
2 2 4
4

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SIST EN 17685-1:2023
EN 17685-1:2023 (E)
1 Scope
This document specifies a method for the determination of the loss on ignition (w ) of fine,
LOI
intermediate, composite and coarse soils, organic soils and anthropogenic materials (according to
EN 16907-2) after ignition under air at 550°C.
NOTE The loss of mass suffered by these materials at 550 °C is usually due to the release of volatile
compounds, water (absorbed, crystalized or structural) and gases from decomposition of organic matter
and inorganic substances such as sulfur, sulfides or hydroxides (e.g. H O, CO , SO ).
2 2 2
A method is given in Annex B in order to estimate the organic matter content (C ) from the value of
OM
w for clayey soils.
LOI
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 17892-12, Geotechnical investigation and testing - Laboratory testing of soil - Part 12:
Determination of liquid and plastic limits (ISO 17892-12)
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
3 Terms and definitions
No terms and definitions are listed in this document.
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
4 Abbreviations and symbols
dimensionless
C Organic matter content, deduced from w
OM LOI
(%)
D
Maximum diameter of particles in a soil mass mm
max
LOI Loss On Ignition
m
Mass of the empty crucible g
c
m
Mass of the crucible containing the dried sample g
1
m
Mass of the crucible containing the ignited sample g
2
dimensionless
w
Liquid limit according to EN ISO 17892-12
L
(%)
5

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SIST EN 17685-1:2023
EN 17685-1:2023 (E)
Loss on ignition: Mass fraction lost by burning up a dried sample to constant dimensionless
w
LOI
mass at a specified temperature (%)
Residue on ignition: Mass fraction remaining after burning up a dried sample to dimensionless
w
R
(%)
constant mass at a specified temperature
5 Principle of the test
A weighted dried test portion is burned in a furnace to constant mass at (550 ± 25) °C under air. The
difference in mass before and after the ignition process is used to calculate the loss on ignition. The
determination is performed on a dried sample.
NOTE 1 Carbon
...

SLOVENSKI STANDARD
oSIST prEN 17685-1:2021
01-september-2021
Zemeljska dela - Kemijski preskusi - 1. del: Določanje deleža organskih snovi pri
žaroizgubi
Earthworks - Chemical tests - Part 1: Determination of organic matter content by loss on
ignition
Erdarbeiten — Chemische Prüfverfahren — Teil 1: Bestimmung des Gehalts an
organischen Stoffen durch Glühverlust
Terrassements — Essais chimiques — Partie 1 : Détermination de la teneur en matière
organique par perte au feu
Ta slovenski standard je istoveten z: prEN 17685-1
ICS:
13.080.99 Drugi standardi v zvezi s Other standards related to
kakovostjo tal soil quality
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
oSIST prEN 17685-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17685-1:2021

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oSIST prEN 17685-1:2021


DRAFT
EUROPEAN STANDARD
prEN 17685-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

July 2021
ICS 13.080.99; 93.020
English Version

Earthworks - Chemical tests - Part 1: Determination of
organic matter content by loss on ignition
Terrassements - Essais chimiques - Partie 1 : Erdarbeiten - Chemische Tests - Teil 1: Bestimmung
Détermination de la teneur en matière organique par des Gehalts an organischen Stoffen durch Glühverlust
perte au feu
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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17685-1:2021 E
worldwide for CEN national Members.

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oSIST prEN 17685-1:2021
prEN 17685-1:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviations and symbols . 5
5 Principle of the test . 6
6 Apparatus . 7
7 Pretreatment . 7
8 Test procedure . 7
9 Expression of results and determination of the loss on ignition . 8
10 Test report . 8
Annex A (informative) Example of a test data sheet . 10
Annex B (normative) Determination of the organic matter content of clayed soils . 11
2

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oSIST prEN 17685-1:2021
prEN 17685-1:2021 (E)
European foreword
This document (prEN 17685-1:2021) 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

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oSIST prEN 17685-1:2021
prEN 17685-1:2021 (E)
Introduction
This document describes a method for the determination of the loss on ignition (w ) of fine,
LOI
intermediate, composite and coarse soils, organic soils and anthropogenic materials (according to
EN 16907-2) after ignition under air at 550°C. Methods are given in Annex B in order to estimate the
organic matter content (C ) from the value of w .
OM LOI
4

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oSIST prEN 17685-1:2021
prEN 17685-1:2021 (E)
1 Scope
This document describes a method for the determination of the loss on ignition (w ) of fine,
LOI
intermediate, composite and coarse soils, organic soils and anthropogenic materials (according to
EN 16907-2) after ignition under air at 550°C.
The loss of mass suffered by these materials at 550 °C is usually due to the release of volatile compounds,
water (absorbed, crystalized or structural) and gases from decomposition of organic matter and
inorganic substances such as sulfur, sulphides or hydroxides (e.g. H O, CO , SO ).
2 2 2
A method is given in Annex B in order to estimate the organic matter content (C ) from the value of
OM
w for clayed soils.
LOI
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 932-2, Tests for general properties of aggregates — Part 2: methods for reducing laboratory samples
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
constant mass
successive weightings after drying at least 1h apart not differing by more than 0,1 %
4 Abbreviations and symbols
Abbreviations for terms and tests
LOI Loss of ignition
COM Organic Matter Content

5

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oSIST prEN 17685-1:2021
prEN 17685-1:2021 (E)
Symbols for Quantities
C Organic matter content, deduced from w
dimensionless (%)
OM LOI
D
Maximum diameter of particles in a soil mass mm
max
m
mass of the empty crucible g
a
m
mass of the crucible containing the dried sample g
c
m
mass of the crucible containing the ignited sample g
d
w
Liquid limit dimensionless (%)
L
Loss of ignition: Mass fraction lost by burning up a
w
dried sample to constant mass at a specified dimensionless (%)
LOI
temperature
Residue of ignition : Mass fraction remaining after
w
burning up a dried sample to constant mass at a dimensionless (%)
R
specified temperature
5 Principle of the test
A weighted dried test portion is burned in a furnace to constant mass at 550 °C ± 25 °C under air. The
difference in mass be
...