EN 1936:2006

SLOVENSKI STANDARD
01-marec-2007
1DGRPHãþD
SIST EN 1936:2000
Preskušanje naravnega kamna - Ugotavljanje prostorninske mase brez por in
votlin in prostorninske mase s porami in votlinami ter skupne in odprte poroznosti
Natural stone test methods - Determination of real density and apparent density, and of
total and open porosity
Prüfverfahren für Naturstein - Bestimmung der Reindichte, der Rohdichte, der offenen
Porosität und der Gesamtporosität
Méthodes d'essai des pierres naturelles - Détermination des masses volumiques réelle
et apparente et des porosités ouverte et totale
Ta slovenski standard je istoveten z: EN 1936:2006
ICS:
73.020 Rudarstvo in kamnolomsko Mining and quarrying
izkopavanje
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1936
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2006
ICS 73.020; 91.100.15 Supersedes EN 1936:1999
English Version
Natural stone test methods - Determination of real density and
apparent density, and of total and open porosity
Méthodes d'essai des pierres naturelles - Détermination Prüfverfahren für Naturstein - Bestimmung der Reindichte,
des masses volumiques réelle et apparente et des der Rohdichte, der offenen Porosität und der
porosités ouvertes et totale Gesamtporosität
This European Standard was approved by CEN on 25 October 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1936:2006: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Principle.4
4 Terms and definitions .4
5 Symbols.5
6 Apparatus.5
7 Preparation of the specimens .6
7.1 Sampling.6
7.2 Test specimens.6
7.3 Drying the specimens.6
8 Test procedure.6
8.1 Open porosity and apparent density .6
8.2 Real density.7
8.2.1 General.7
8.2.2 Method A (pycnometer).7
8.2.3 Method B (Le Chatelier volumenometer) .7
9 Expression of results.8
9.1 General.8
9.2 Apparent density.8
9.3 Open porosity.8
9.4 Real density.8
9.5 Total porosity.9
10 Test report.9
Bibliography .11

Foreword
This document (EN 1936:2006) has been prepared by Technical Committee CEN/TC 246 “Natural stones”,
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 June 2007, and conflicting national standards shall be withdrawn at
the latest by June 2007.
This document supersedes EN 1936:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, 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.
1 Scope
This European standard specifies methods for determining the real density, apparent density, and open and
total porosity of natural stone.
2 Normative references
The following referenced documents are indispensable for the application 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 12670:2001, Natural stone - Terminology
ISO 3507, Laboratory glassware - Pyknometers
3 Principle
After drying to constant mass, the apparent density and open porosity are determined by vacuum assisted
water absorption and submerged weighing of specimens. The real density and total porosity require the
specimen to be pulverised.
4 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12670:2001 and the following apply.
4.1
apparent density (ρ )
b
ratio between the mass of the dry specimen and its apparent volume
4.2
apparent volume
volume limited by the external surface of the specimen, including any voids
4.3
volume of the solid part
difference between the apparent volume of the specimen and the volume of the voids (open and closed pores)
4.4
real density (ρ )
r
ratio between the mass of the dry specimen and the volume of its solid part
4.5
open porosity
ratio (as a percentage) between the volume of the open pores and the apparent volume of the specimen
4.6
total porosity
ratio (as a percentage) between the volume of pores (open and closed) and the apparent volume of the
specimen
5 Symbols
m mass of the dry specimen, in grams;
d
m mass of the specimen immersed in water, in grams;
h
m mass of the saturated specimen, in grams;
s
m mass of the specimen ground and dried (for the tests using the pycnometer or the volumenometer), in
e
grams;
m mass of the pycnometer filled with water and the ground specimen, in grams;
m mass of the pycnometer filled with water, in grams;
V apparent volume of the specimen, in millilitres;
b
V volume of open pores of the specimen, in millilitres;
o
V volume of liquid displaced by the mass m (volumenometer test);
s e
ρ apparent density of the specimen, in kilograms per cubic metre;
b
ρr real density of the specimen, in kilograms per cubic metre;
ρ density of water, in kilograms per cubic metre;
rh
p open porosity of the specimen, as a percentage;
o
p total porosity of the specimen, as a percentage.
6 Apparatus
6.1 A ventilated oven which maintain a temperature (70 ± 5) °C.
6.2 An evacuation vessel which can maintain a pressure of (2,0 ± 0,7) kPa = (15 ± 5) mm Hg and allow
gradual immersion of the contained specimens.
6.3 A weighing instrument which has an accuracy of at least 0,01% of the mass to be weighed, also
capable of weighing the specimen in water.
6.4 A linear measuring device with an accuracy of at least 0,01%.
6.5 An ISO 3507 type 3 pycnometer having a nominal capacity of 50 ml.
6.6 A La Chatelier type volumenometer consisting of a flat-bottomed flask with a tube graduated form 0 ml
to 24 ml in 0,1 ml graduations.
6.7 A sieve with a 0,063 mm mesh.
6.8 A dessicator with dessicant.
7 Preparati
...