EN 13892-10:2025
(Main)Method of test for screed materials - Part 10: Determination of moisture content - Calcium Carbide Method
Method of test for screed materials - Part 10: Determination of moisture content - Calcium Carbide Method
This document specifies the CM method for determining the moisture content of cementitious screed, calcium sulphate screed and magnesite screed made according to EN 13813.
Prüfverfahren für Estrichmörtel und Estrichmassen - Teil 10: Messung des Feuchtegehalts - Calciumcarbidmethode
Dieses Dokument legt das CM Verfahren zur Bestimmung des Feuchtegehalts von Zementestrichen, Calciumsulfatestrichen und Magnesiaestrichen fest, die in Übereinstimmung mit EN 13813 hergestellt wurden.
Méthodes d’essai des matériaux pour chapes - Partie 10 : Détermination de la teneur en humidité - Méthode au carbure de calcium
Le présent document spécifie la méthode de la bombe à carbure permettant de déterminer la teneur en humidité des chapes à base de ciment, de sulfate de calcium et de magnésie préparées conformément à l’EN 13813.
Metoda preskušanja mešanice za estrih - 10. del: Določevanje deleža vlage - Metoda kalcijevega karbida
Ta dokument določa metodo kalcijevega karbida (CM) za določevanje deleža vlage v cementnem estrihu, estrihu na osnovi kalcijevega sulfata in magnezitnem estrihu, izdelanem v skladu s standardom EN 13813.
General Information
Overview - EN 13892-10:2025 (Calcium Carbide Method for moisture content)
EN 13892-10:2025, published by CEN, specifies the Carbide Method (CM) for determining the moisture content of screed materials manufactured to EN 13813. The standard covers cementitious screed, calcium sulphate (anhydrite) screed and magnesite screed. The CM method measures the free mobile water in an on‑site sample by a chemical reaction between water and calcium carbide (CaC2) that generates a pressure reading proportional to moisture - reported as CM % (Carbide-exposed Moisture %).
Key topics and technical requirements
- Scope and applicability: Cementitious, calcium sulphate and magnesite screeds made according to EN 13813.
- Principle: Reaction of sample water with calcium carbide in an airtight steel container producing ethyne; pressure gauge reading converted to moisture content.
- Equipment:
- Airtight CM apparatus with pressure gauge (accuracy per EN 837-2)
- Steel balls for grinding
- Calcium carbide ampoules (7 g, ≥80 % CaC2, grain size 0.3–1.0 mm)
- Scale (0.1 g accuracy), timer, crushing bowl, PE bags
- Procedure highlights:
- Collect full-thickness sample, crush and homogenize
- Weigh subsamples (50 g for cementitious and magnesite; 100 g for calcium sulphate)
- Place subsample, steel balls and CaC2 ampoule in CM apparatus, shake per specified intervals and read pressure after 10 minutes
- Verify powdery residue; clean apparatus between tests
- Reporting: Include standard reference, test location/date, screed type and thickness, sample weight, pressure and CM %.
- Safety & conformity: Follow CM apparatus manufacturer safety instructions; pressure equipment considerations per Directive 2014/68/EU.
Practical applications - who uses this standard
- Flooring contractors and screed installers verifying on-site moisture before flooring installation
- Test laboratories and building inspectors assessing readiness for floor coverings
- Manufacturers and QA teams performing site checks on screed moisture control
- Architects and project managers specifying acceptance criteria for screed moisture
Benefits: fast, on-site determination of free mobile water (CM %) enabling timely decisions on drying times and floor covering installation.
Related standards and references
- EN 13813 - Screed material and floor screeds: properties and requirements (parent material standard)
- EN 837-2 - Pressure gauge selection and installation (accuracy requirement)
- Directive 2014/68/EU - Pressure equipment conformity considerations
Keywords: EN 13892-10:2025, Calcium Carbide Method, CM method, moisture content, screed testing, cementitious screed, calcium sulphate screed, magnesite screed, carbide method.
Frequently Asked Questions
EN 13892-10:2025 is a standard published by the European Committee for Standardization (CEN). Its full title is "Method of test for screed materials - Part 10: Determination of moisture content - Calcium Carbide Method". This standard covers: This document specifies the CM method for determining the moisture content of cementitious screed, calcium sulphate screed and magnesite screed made according to EN 13813.
This document specifies the CM method for determining the moisture content of cementitious screed, calcium sulphate screed and magnesite screed made according to EN 13813.
EN 13892-10:2025 is classified under the following ICS (International Classification for Standards) categories: 91.100.10 - Cement. Gypsum. Lime. Mortar. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 13892-10:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2025
Metoda preskušanja mešanice za estrih - 10. del: Določevanje deleža vlage -
Metoda kalcijevega karbida
Method of test for screed materials - Part 10: Determination of moisture content -
Calcium Carbide Method
Prüfverfahren für Estrichmörtel und Estrichmassen - Teil 10: Messung der Feuchte mit
der Calciumcarbidmethode
Méthodes d’essai des matériaux pour chapes - Partie 10 : Détermination de la teneur en
humidité - Méthode au carbure de calcium
Ta slovenski standard je istoveten z: EN 13892-10:2025
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 13892-10
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 91.100.10
English Version
Method of test for screed materials - Part 10:
Determination of moisture content - Calcium Carbide
Method
Méthodes d'essai des matériaux pour chapes - Partie Prüfverfahren für Estrichmörtel und Estrichmassen -
10 : Détermination de la teneur en humidité - Méthode Teil 10: Messung des Feuchtegehalts -
au carbure de calcium Calciumcarbidmethode
This European Standard was approved by CEN on 27 July 2025.
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13892-10:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Equipment and Gear . 4
6 Procedure . 5
7 Test report . 6
Bibliography . 7
European foreword
This document (EN 13892-10:2025) has been prepared by Technical Committee CEN/TC 303 “Floor
screeds and screed materials”, the secretariat of which is held by UNI.
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 March 2026 of DOP, and conflicting national standards
shall be withdrawn at the latest by March 2026 of DOW.
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.
1 Scope
This document specifies the CM method for determining the moisture content of cementitious screed,
calcium sulphate screed and magnesite screed made according to EN 13813.
2 Normative references
The following documents are referred
...
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