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1. WO2020136152 - TEST METHOD FOR DETERMINING THE RISK POTENTIAL FOR AN ALKALI-SILICA REACTION IN MINERAL CONSTRUCTION MATERIALS

Publication Number WO/2020/136152
Publication Date 02.07.2020
International Application No. PCT/EP2019/086885
International Filing Date 22.12.2019
IPC
G01N 33/38 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
38Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
G01N 21/65 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
65Raman scattering
CPC
G01N 21/65
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
65Raman scattering
G01N 33/383
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
38Concrete; ceramics; glass; bricks
383Concrete, cement
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE]/[DE]
Inventors
  • DITTRICH, Sebastian
  • THOME, Volker
  • SEIFERT, Severin
  • WOLF, Miriam
Agents
  • GOEDEN, Christian
  • FRIESE, Martin
  • STÖRLE, Christian
  • ANDRAE, Steffen
Priority Data
10 2018 251 789.428.12.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) PRÜFVERFAHREN ZUR BESTIMMUNG DES GEFÄHRDUNGSPOTENTIALS FÜR ALKALI-KIESELSÄURE-REAKTION IN MINERALISCHEN BAUSTOFFEN
(EN) TEST METHOD FOR DETERMINING THE RISK POTENTIAL FOR AN ALKALI-SILICA REACTION IN MINERAL CONSTRUCTION MATERIALS
(FR) PROCÉDÉ DE CONTRÔLE PERMETTANT DE DÉTERMINER LE POTENTIEL DE RISQUE POUR LA RÉACTION ALCALI-SILICE DANS DES MATÉRIAUX DE CONSTRUCTION MINÉRAUX
Abstract
(DE)
Die Erfindung betrifft ein Prüfverfahren zur Bestimmung des Gefährdungspotentials einer Alkali-Kieselsäure-Reaktion in mineralischen Baustoffen wie beispielsweise Beton, gekennzeichnet durch die folgenden Schritte: a) Untersuchen (220) einer Probe (12) mittels Raman- Spektroskopie zur strukturellen Charakterisierung (230) der Probe (12), b) Vergleichen (240) des Untersuchungsergebnisses mit in einer Datenbank hinterlegten Werten (250), und c) Verwenden (260) des Ergebnisses des Vergleichs (240) zur Ermittlung (270) eines Gefährungspotentials für den Beton für eine Alkali-Kieselsäure-Reaktion.
(EN)
The invention relates to a test method for determining the risk potential of an alkali-silica reaction in mineral construction materials such as concrete, for example, characterized by the following steps: a) examining (220) a sample (12) by means of Raman spectroscopy for providing a structural characterization (230) of the sample (12), b) comparing (240) the examination result to values (250) stored in a database, and c) using (260) the result of the comparison (240) for ascertaining (270) a risk potential for the concrete for an alkali-silica reaction.
(FR)
L'invention concerne un procédé de contrôle permettant de déterminer le potentiel de risque d'une réaction alcali-silice dans des matériaux de construction minéraux comme le béton par exemple. Elle se caractérise par les étapes suivantes : a) analyse (220) d'un échantillon (12) par spectroscopie Raman pour la caractérisation (230) structurelle de l'échantillon (12), b) comparaison (240) des résultats de l'analyse avec des valeurs (250) stockées dans une base de données, et c) utilisation (260) des résultats de la comparaison (240) pour déterminer (270) un potentiel de risque pour le béton pour une réaction alcali-silice.
Also published as
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