DE102007011985A1 - Mortar measuring cell for rotation viscosimeter for rheological analysis of fluid, has annular passage container, and measuring body such as cage sensor, where operative surface of cage sensor is formed by scaffold with material - Google Patents
Mortar measuring cell for rotation viscosimeter for rheological analysis of fluid, has annular passage container, and measuring body such as cage sensor, where operative surface of cage sensor is formed by scaffold with material Download PDFInfo
- Publication number
- DE102007011985A1 DE102007011985A1 DE102007011985A DE102007011985A DE102007011985A1 DE 102007011985 A1 DE102007011985 A1 DE 102007011985A1 DE 102007011985 A DE102007011985 A DE 102007011985A DE 102007011985 A DE102007011985 A DE 102007011985A DE 102007011985 A1 DE102007011985 A1 DE 102007011985A1
- Authority
- DE
- Germany
- Prior art keywords
- measuring cell
- mortar
- measuring
- sensor
- annular gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 title claims description 11
- 239000007790 solid phase Substances 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 241001012508 Carpiodes cyprinus Species 0.000 description 1
- 101150087426 Gnal gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 can be measured well Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001595 flow curve Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Centrifugal Separators (AREA)
Abstract
Description
Gegenstand der Erfindung ist eine Messzelle zur Ausrüstung von Rotationsviskosimetern für die Ermittlung der Fließeigenschaften von Fluiden, insbesondere von solchen, die aus einer flüssigen und einer festen Phase, wie Körnern, Fasern oder ähnlichen, bestehen.object The invention is a measuring cell for the equipment of rotational viscometers for determining the flow properties of Fluids, in particular those derived from a liquid and a solid phase, such as grains, fibers or the like, consist.
Stand der TechnikState of the art
Zur
Messung der Fließeigenschaften von Fluiden werden seit
Jahrzehnten Rotationsviskosimeter verwendet. Diese sind mitverschiedenen,
dem Untersuchungsgegenstand gerechten, Messzellen ausgerüstet.
Zum Beispiel Platte/Platte (DIN 53018), Zylindermesssysteme (ISO
3219) oder Doppelspalt Messsysteme (DIN 54453,
Es
wurde vorgeschlagen, die Oberflächen der Messzellen zu
strukturieren oder aufzurauen (
Die technische Praxis zeigt, dass es schwierig ist, eine präzise Scherfläche hierfür zu ermitteln und dass sich während der Messung die vorhandenen Vertiefungen beziehungsweise Hohlräume zusetzen und damit das Messergebnis verfälschen.The Technical practice shows that it is difficult to be precise Shear surface for this to determine and that during the measurement, the existing wells or Add cavities and thus distort the measurement result.
Eine
andere Möglichkeit, die Gleitschichtbildung und Entmischung
zu umgehen besteht darin, auf das Scheren des Fluids zwischen definierten
Flächen zu verzichten und einen Verdrängungskörper (
In
vielen technischen Bereichen behilft man sich seit mehr als 100
Jahren mit heuristischen Verfahren zur Beurteilung des Fließverhaltens
von pastösen Fluiden. Hier werden zum Beispiel Auslaufversuche
(EN 12706) für Schlicker, Spachtelmassen, oder selbst verdichtendem
Beton (
Da diese Verfahren die rheologischen Kenngrößen des Materials, wie Viskosität und Fließgrenze nur bei einem bestimmten, nur in der Gesamtheit und außerdem gerätespezifisch durch eine geometrische Abmessung oder Zeit fixieren, kann man diese nur zur Orientierung nutzen.There these methods are the rheological characteristics of the Materials, such as viscosity and yield point only at a certain, only in the whole and besides device specific by a geometric dimension or Fixing time, you can use this only for guidance.
Problemproblem
Der im Patentanspruch 1 angegebenen Erfindung liegt das Problem zugrunde, bei einer Messzelle für Rotationsviskosimeter mit definierten Flächen, nämlich der Doppelspaltzelle, die Wandgleiteffekte auszuschließen und damit die Fließgrenze und Viskosität von Stoffgemengen, insbesondere Mörteln exakt zu messen.Of the The invention defined in claim 1 is based on the problem at a measuring cell for rotational viscometer with defined Surfaces, namely the double gap cell, the wall sliding effects exclude and thus the yield strength and viscosity of substance mixtures, in particular mortars to measure exactly.
Lösungsolution
Dieses Problem wird gelöst, indem der Messkörper einer bekannten Doppelspaltmesszelle so ausgeführt wird, dass er vorwiegend durch das zu untersuchende Material gebildet wird. Um dies zu erreichen. besteht der Messkörper nur aus einem geflechtartigen Gerüst beziehungsweise Netz mit vernachlässigbar kleinen Wandflächen, in das sich Fluidteilchen einlagern und damit die Scherfläche bilden.This Problem is solved by the measuring body of a known double gap measuring cell is carried out so that it is mainly formed by the material to be examined. To achieve this. the measuring body consists of only one braid-like framework or net with negligible small wall surfaces, in which store fluid particles and thus form the shear surface.
Vorteilhafte Wirkung der ErfindungAdvantageous effect of the invention
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass durch die Öffnungen des Geflechts hindurch, zwischen dem Material innerhalb und außerhalb des Messkörpers das Fluid verbunden ist und somit Kohäsionskräfte ein Wandgleiten des Fluids verhindern. Dies wird insbesondere dadurch erreicht, dass, je nach Material, die Größe der Geflechtmaschen an das Fluid, vor allem an die maximale Korngröße angepasst wird.The particular advantages of the invention are that through through the openings of the braid, between the material inside and outside the measuring body the fluid is connected and thus cohesive forces prevent wall sliding of the fluid. This is especially true achieved that, depending on the material, the size of the Braid mesh to the fluid, especially to the maximum grain size is adjusted.
Da bei einer Doppelspalt-Messzelle die innere und äußere Fläche des Messkörpers zum Messsignal (Drehmoment) beitragen, und diese somit sehr empfindlich ist, können auch die Fließgrenzen sehr fließfähiger Suspensionen und Mörtel bestimmt werden.Since in a double-gap measuring cell, the inner and outer surface of the measuring body for Messsi gnal (torque), and thus this is very sensitive, the flow limits of very flowable suspensions and mortars can be determined.
Dreht man das Ringspaltgefäß oder den Messkörper während des Eintauchvorgangs des Messkörpers, so sorgen schräg angestellte Leitprofile am unteren Ende vorteilhaft dafür dass sich der Körper, auch bei steiferem Material, in das Prüfgut einschrauben kann.rotates one the annular gap vessel or the measuring body during the dipping process of the measuring body, so obliquely employed Leitprofile ensure at the bottom beneficial for the body, even at stiffer material, can screw into the test material.
Diese Leitprofile verhindern außerdem während der Messung eine Sedimentation der festen Phase des Fluids.These Guide profiles also prevent during measurement a sedimentation of the solid phase of the fluid.
Nivellierschlitze die am oberen Ende des Messkörpers in das Geflecht eingearbeitet sind sowie eine Überlauftasse in der Mitte des Ringspaltgefäßes stellen vorteilhaft sicher, dass sich von selbst das richtige Niveau des Fluids einstellt. Der Boden des Ringspaltgefäßes kann, ohne das Messergebnis zu beeinflussen, abgerundet ausgestaltet werden, um eine leichte Reinigung des Gefäßes zu ermöglichen.Nivellierschlitze which are incorporated in the braid at the upper end of the measuring body are as well as an overflow cup in the middle of the annular gap vessel Advantageously, make sure that yourself is the right level of the fluid. The bottom of the annular gap vessel can, without affecting the measurement result, rounded designed Be careful to clean the vessel to enable.
Das Ringspaltgefäß kann vorteilhaft aus zwei Teilen aufgebaut sein, so dass der innere Zylinder mit der Überlauftasse zur Reinigung herausgenommen werden kann.The Annular gap vessel may advantageously consist of two parts be constructed so that the inner cylinder with the overflow cup can be removed for cleaning.
Ein wechselbarer Adapter verbindet den Messkörper mit dem Drehmomentsensor des Viskosimeters, so dass die Messzelle einfach an verschiedene Viskosimeter angepasst werden.One Interchangeable adapter connects the measuring body with the torque sensor of the viscometer, so that the measuring cell easy to different Be adapted viscometer.
Die Messzelle kann ohne prinzipielle Änderung, sowohl mit Viskosimetern mit drehendem Ringspaltgefäß und festem Messkörper (Couette Typ) als auch Viskosimetern mit festem Ringspaltgefäß und drehendem Messkörper, verwendet werden (Searle Typ).The Measuring cell can without principle change, both with viscometers with rotating annular gap vessel and fixed measuring body (Couette type) and viscometers with fixed annular gap vessel and rotating measuring body, used (Searle type).
Darstellung
der Erfindung und ihrer möglichen Varianten: Ein Ausführungsbeispiel
der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden
als Korbmesszelle beschrieben. Es zeigen
Die
Korbmesszelle besteht aus dem Messkörper oder Korbsensor
(
Der
Ablauf einer Messung mit der erfindungsgemäßen
Korbmesszelle erfolgt auf nachstehende Weise:
Das zu vermessende
Fluid (
The fluid to be measured (
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 66716 [0002] - DE 66716 [0002]
- - DE 844362 [0002] - DE 844362 [0002]
- - US 4214475 [0002] - US 4214475 [0002]
- - AT 122893 [0003] AT 122893 [0003]
- - DD 283058 [0003] - DD 283058 [0003]
- - DE 19503028 [0005] - DE 19503028 [0005]
- - US 4332158 [0005] US 4332158 [0005]
- - WO 93/05382 A1 [0005] - WO 93/05382 A1 [0005]
- - JP 09250980 A [0006] - JP 09250980 A [0006]
Zitierte Nicht-PatentliteraturCited non-patent literature
- - Metzger, Thomas: Das Rheologie Handbuch – Hannover: Vincentz, 2000, Seite 211 [0002] - Butcher, Thomas: The Rheology Handbook - Hannover: Vincentz, 2000, page 211 [0002]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007011985.4A DE102007011985B4 (en) | 2007-03-09 | 2007-03-09 | Mortar measuring cell for rotation viscometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007011985.4A DE102007011985B4 (en) | 2007-03-09 | 2007-03-09 | Mortar measuring cell for rotation viscometer |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007011985A1 true DE102007011985A1 (en) | 2008-09-11 |
DE102007011985B4 DE102007011985B4 (en) | 2022-10-20 |
Family
ID=39678050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007011985.4A Active DE102007011985B4 (en) | 2007-03-09 | 2007-03-09 | Mortar measuring cell for rotation viscometer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007011985B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105021800A (en) * | 2015-07-23 | 2015-11-04 | 北京中企卓创科技发展有限公司 | Airport dry hard concrete rheological property test system |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE66716C (en) | american elevator COMpany (Incorporated) in London, 4 Queen Victoria Street | Automatic resistance regulator to protect electrical driving machines from excessive current | ||
AT122893B (en) * | 1928-02-03 | 1931-05-26 | Yacco Saf | Method and device for measuring the internal friction of liquids, in particular lubricants, and the friction between liquids and solid bodies. |
US2096222A (en) * | 1936-03-13 | 1937-10-19 | Nat Technical Lab | Viscosimeter |
DE844362C (en) | 1950-08-19 | 1952-07-21 | Richard Dr Rer Techn Vieweg | Electric viscometer for any kind of liquid |
US4214475A (en) | 1978-06-30 | 1980-07-29 | Texaco Inc. | Adapter for a sensitive viscometer |
US4332158A (en) | 1980-05-09 | 1982-06-01 | Osborne Howard S | Slump testing device |
DE3630565A1 (en) * | 1985-09-10 | 1987-03-12 | Veglia Francaise Sa | VISCOSITY MEASURING DEVICE |
DD283058A7 (en) | 1988-06-08 | 1990-10-03 | Adw Ddr | MEASURING CELL FOR HORIZONTALLY ACTUATING POWER-OFF-MEASURING DEVICES FOR DETECTING THE STRENGTH AND DEFORMABILITY OF GELS |
US5056358A (en) * | 1988-08-26 | 1991-10-15 | University Of British Columbia | Apparatus for the determination of rheological properties of sedimenting suspensions |
DD252246A1 (en) * | 1992-05-07 | METALLIC PROTECTION COVER FOR DEVICES WITH LOW FREQUENCY MAGNETIC CHANGE FIELDS | ||
WO1993005382A1 (en) | 1991-08-28 | 1993-03-18 | Atrof Bauphysik Ag | Device for testing unset concrete and mortar |
DE19503028A1 (en) | 1995-01-31 | 1996-08-01 | Markus Greim | Flow characteristics measurement of rough-grained materials such as green concrete |
JPH09250980A (en) | 1996-03-15 | 1997-09-22 | Fujita Corp | Method for testing consistency of superplasticized concrete |
ATA122893A (en) | 1992-06-22 | 2000-03-15 | Niwa Emiyo | METHOD FOR PRODUCING AN OILY PREPARATION |
-
2007
- 2007-03-09 DE DE102007011985.4A patent/DE102007011985B4/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD252246A1 (en) * | 1992-05-07 | METALLIC PROTECTION COVER FOR DEVICES WITH LOW FREQUENCY MAGNETIC CHANGE FIELDS | ||
DE66716C (en) | american elevator COMpany (Incorporated) in London, 4 Queen Victoria Street | Automatic resistance regulator to protect electrical driving machines from excessive current | ||
AT122893B (en) * | 1928-02-03 | 1931-05-26 | Yacco Saf | Method and device for measuring the internal friction of liquids, in particular lubricants, and the friction between liquids and solid bodies. |
US2096222A (en) * | 1936-03-13 | 1937-10-19 | Nat Technical Lab | Viscosimeter |
DE844362C (en) | 1950-08-19 | 1952-07-21 | Richard Dr Rer Techn Vieweg | Electric viscometer for any kind of liquid |
US4214475A (en) | 1978-06-30 | 1980-07-29 | Texaco Inc. | Adapter for a sensitive viscometer |
US4332158A (en) | 1980-05-09 | 1982-06-01 | Osborne Howard S | Slump testing device |
DE3630565A1 (en) * | 1985-09-10 | 1987-03-12 | Veglia Francaise Sa | VISCOSITY MEASURING DEVICE |
DD283058A7 (en) | 1988-06-08 | 1990-10-03 | Adw Ddr | MEASURING CELL FOR HORIZONTALLY ACTUATING POWER-OFF-MEASURING DEVICES FOR DETECTING THE STRENGTH AND DEFORMABILITY OF GELS |
US5056358A (en) * | 1988-08-26 | 1991-10-15 | University Of British Columbia | Apparatus for the determination of rheological properties of sedimenting suspensions |
WO1993005382A1 (en) | 1991-08-28 | 1993-03-18 | Atrof Bauphysik Ag | Device for testing unset concrete and mortar |
ATA122893A (en) | 1992-06-22 | 2000-03-15 | Niwa Emiyo | METHOD FOR PRODUCING AN OILY PREPARATION |
DE19503028A1 (en) | 1995-01-31 | 1996-08-01 | Markus Greim | Flow characteristics measurement of rough-grained materials such as green concrete |
JPH09250980A (en) | 1996-03-15 | 1997-09-22 | Fujita Corp | Method for testing consistency of superplasticized concrete |
Non-Patent Citations (2)
Title |
---|
KULICKE,W.-M.:Fließverhalten von Stoffen uns Stoffgemischen.Hüthig & Wepf Verlag Basel,u.a.,ISBN 3-85739-115-4,S.76-78; * |
Metzger, Thomas: Das Rheologie Handbuch Hannover: Vincentz, 2000, Seite 211 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105021800A (en) * | 2015-07-23 | 2015-11-04 | 北京中企卓创科技发展有限公司 | Airport dry hard concrete rheological property test system |
Also Published As
Publication number | Publication date |
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DE102007011985B4 (en) | 2022-10-20 |
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