EN 196-11:2018
(Main)Methods of testing cement - Part 11: Heat of hydration - Isothermal Conduction Calorimetry method
Methods of testing cement - Part 11: Heat of hydration - Isothermal Conduction Calorimetry method
This document specifies the apparatus and procedure for determining the heat of hydration of cements and other hydraulic binders at different test ages by isothermal conduction calorimetry.
This test procedure is intended for measuring the heat of hydration of cement up to 7 days in order to obtain correspondence between Isothermal Conduction Calorimetry (ICC) and EN 196 8 and EN 196 9. Nevertheless this test duration may be critical for some apparatus, even if they can work properly at shorter test ages.
Contrary to EN 196 8 this method gives the heat of hydration continuously over the time. Additionally, the heat flow versus time is given.
Prüfverfahren für Zement - Teil 11: Bestimmung der Hydratationswärme von Zement durch isotherme Wärmeflusskalorimetrie
Dieses Dokument legt die Prüfeinrichtung und das Verfahren zur Bestimmung der Hydratationswärme von Zement und anderer hydraulischer Binder zu unterschiedlichen Prüfaltern mittels isothermischer Wärme¬flusskalorimetrie fest.
Um einen Zusammenhang zwischen der isothermen Wärmeflusskalorimetrie und EN 196 8 und EN 196 9 zu erhalten, sieht dieses Verfahren die Messung der Hydratationswärme von Zement über einen Zeitraum von bis zu 7 Tagen vor. Dennoch kann diese Prüfdauer für einige Geräte kritisch sein, auch wenn diese bei kürzeren Prüfdauern ordnungsgemäß funktionieren.
Im Gegensatz zu EN 196 8 legt dieses Verfahren die Hydratationswärme im Zeitverlauf dar. Zusätzlich wird der Wärmefluss im Verhältnis zur Zeit angegeben.
Méthodes d’essais des ciments - Partie 11: Chaleur d’hydratation - Méthode par calorimétrie à conduction isotherme
La présente Norme européenne spécifie l’appareillage et le mode opératoire permettant de déterminer la chaleur d’hydratation des ciments et autres liants hydrauliques à différents âges d’essai par calorimétrie à conduction isotherme.
Ce mode opératoire sert à mesurer la chaleur d’hydratation du ciment pendant une durée allant jusqu’à 7 jours afin d’obtenir une correspondance entre la calorimétrie à conduction isotherme et les normes EN 196-8 et EN 196-9. Néanmoins, cette durée d’essai peut être critique pour certains appareils, même s’ils peuvent fonctionner correctement à des âges d’essai plus courts.
Contrairement à l’EN 196-8 (méthode par dissolution), cette méthode donne la chaleur d’hydratation de façon continue dans le temps. Elle donne également le flux thermique en fonction du temps.
Metode preskušanja cementa - 11. del: Toplota hidratacije - Izotermna kondukcijska kalorimetrija (ICC)
Ta evropski standard določa napravo in postopek za določanje toplote hidratacije cementov ter drugih hidravličnih veziv pri različnih preskusnih starostih z izotermno kondukcijsko kalorimetrijo.
Ta preskusni postopek je namenjen merjenju toplote hidratacije cementa do 7 dni, da se pridobijo podatki, ki so skladni s standardom EN 196 8. Kljub temu je lahko trajanje preskusa kritično za nekatere naprave, tudi če lahko pravilno delujejo pri krajših preskusnih starostih.
V nasprotju s standardom EN 196 8 (metoda z raztopino) ta metoda kontinuirano podaja toploto hidratacije. Poleg tega je podan tudi toplotni tok v primerjavi s časom.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Metode preskušanja cementa - 11. del: Toplota hidratacije - Izotermna kondukcijska kalorimetrija (ICC)Prüfverfahren für Zement - Teil 11: Bestimmung der Hydratationswärme von Zement durch isotherme WärmeflusskalorimetrieMéthodes d’essais des ciments - Partie 11: Chaleur d’hydratation - Méthode par calorimétrie à conduction isothermeMethods of testing cement - Part 11: Heat of hydration - Isothermal Conduction Calorimetry method91.100.10Cement. Mavec. Apno. MaltaCement. Gypsum. Lime. MortarICS:Ta slovenski standard je istoveten z:EN 196-11:2018SIST EN 196-11:2019en,fr,de01-februar-2019SIST EN 196-11:2019SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 196-11
December
t r s z ICS
{ sä s r rä s r English Version
Methods of testing cement æ Part
s sã Heat of hydration æ Isothermal Conduction Calorimetry method Méthodes d 5essais des ciments æ Partie
s sã Chaleur d 5hydratation æ Méthode par calorimétrie à conduction isotherme
Prüfverfahren für Zement æ Teil
s sã Bestimmung der Hydratationswärme von Zement durch isotherme Wärmeflusskalorimetrie This European Standard was approved by CEN on
t v September
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s { xæ s sã t r s z ESIST EN 196-11:2019
.............................................................................................................................. 10 5.2.3 Time constant
............................................................................................................................................. 10 5.3 Pulse calibration ........................................................................................................................................... 11 5.3.1 General.............................................................................................................................................................. 11 5.3.2 Time constant
............................................................................................................................................. 12 5.4 Determination of the calorimeter parameters .................................................................................. 12 5.5 Improvement of common calibration procedure ............................................................................. 12 6 Sample ............................................................................................................................................................... 13 6.1 General.............................................................................................................................................................. 13 6.2 Test sample ..................................................................................................................................................... 13 6.3 Reference sample .......................................................................................................................................... 13 7 Testing procedure ........................................................................................................................................ 14 7.1 General.............................................................................................................................................................. 14 7.2 Method A - “External mixing”.................................................................................................................... 14 7.3 Method B - “Internal mixing” .................................................................................................................... 14 7.4 Measurement .................................................................................................................................................. 15 7.5 Expression of results ................................................................................................................................... 15 7.6 Test result ........................................................................................................................................................ 16 7.7 Test report ....................................................................................................................................................... 16 8 Precision .......................................................................................................................................................... 17 8.1 Repeatability .................................................................................................................................................. 17 8.2 Reproducibility .............................................................................................................................................. 17
1 Scope This document specifies the apparatus and procedure for determining the heat of hydration of cements and other hydraulic binders at different test ages by isothermal conduction calorimetry. This test procedure is intended for measuring the heat of hydration of cement up to 7 days in order to obtain correspondence between Isothermal Conduction Calorimetry (ICC) and EN 196-8 and EN 196-9. Nevertheless this test duration may be critical for some apparatus, even if they can work properly at shorter test ages. Contrary to EN 196-8 this method gives the heat of hydration continuously over the time. Additionally, the heat flow versus time is given. 2 Normative references There are no normative references in this document. 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 http://www.iso.org/obp 3.1 isothermal conduction calorimeter apparatus able to measure the heat flow generated by a sample kept at constant temperature Note 1 to entry: The constant temperature condition is achieved by maintaining the sample in thermal contact with a heat sink. 3.2 output of calorimeter electric signal from the calorimeter expressed in V 3.3 thermal power heat rate produced by the sample during the test Note 1 to entry: It is commonly expressed, with reference to the unit mass of cement, in W/g or J/(s×g). 3.4 heat time integral of the thermal power and expressed in J/g 3.5 calibration coefficient
ratio between the thermal power produced in the calorimeter and the output of the calorimeter Note 1 to entry: Expressed in W/V. SIST EN 196-11:2019
1 The mass of cement to be used is the mass of the sample that will be used for the measurement. SIST EN 196-11:2019
3.13 time constant
order of magnitude of the time needed to reach the new thermal equilibrium Note 1 to entry: It is a measure of the thermal inertia of the test cell and it is expressed in s. 3.14 detection limit DL minimum value of thermal power that an apparatus is able to detect Note 1 to entry: This value is an estimation of the quality of the measurement that is dependent on the whole measuring chain and not only on the design of the instrument. 4 Apparatus 4.1 General This part gives general requirements related to the relevant properties and design of a calorimeter. Although the design of individual calorimeters from different manufacturers may vary, it should meet the specifications as described below. 4.2 Principle An isothermal heat conduction calorimeter is called “isothermal” as the temperature changes in it (if the instrument and the method are well designed) are so low so that the results are – from a practical point of view – the same as if the measurement had been made at perfectly isothermal conditions. The term is convenient to use here as most other cement calorimeters are (semi-) adiabatic, but it does not imply that the measurements are made under perfectly isothermal conditions. An isothermal heat conduction calorimeter has to consist of a constant-temperature heat sink to which at least two heat-flow sensors and sample holders (calorimetric cells) are attached in a manner resulting in good th
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