ES2349967B1 - PERFECTION IN EDOMETERS FOR APPLICATION OF LOADS IN EDOMETRIC CELLS. - Google Patents

PERFECTION IN EDOMETERS FOR APPLICATION OF LOADS IN EDOMETRIC CELLS. Download PDF

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ES2349967B1
ES2349967B1 ES200803283A ES200803283A ES2349967B1 ES 2349967 B1 ES2349967 B1 ES 2349967B1 ES 200803283 A ES200803283 A ES 200803283A ES 200803283 A ES200803283 A ES 200803283A ES 2349967 B1 ES2349967 B1 ES 2349967B1
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oedometric
cells
application
loads
frame
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ES2349967A1 (en
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Jose Luis Justo Alpañes
Manuel Vazquez Boza
Percy Durand Neyra
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Universidad de Sevilla
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Universidad de Sevilla
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Priority to PCT/ES2009/000536 priority patent/WO2010058045A2/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0076—Hardness, compressibility or resistance to crushing
    • G01N2203/0085—Compressibility
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0266—Cylindrical specimens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0284—Bulk material, e.g. powders
    • 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
    • G01N33/24—Earth materials

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  • 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)
  • Measurement Of Force In General (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

Perfeccionamientos en edómetros para aplicación de cargas en células edométricas.Improvements in edometers for application of loads in oedometric cells.

Los perfeccionamientos consisten en unos medios de
adaptación del edómetro para poder aplicar cargas en células edométricas de hasta 210 mm de diámetro con o sin control de succión.The improvements consist of a means of
Oedometer adaptation to be able to apply loads in oedometric cells up to 210 mm in diameter with or without suction control.

Para ello, los perfeccionamientos comprenden básica-
mente un primer marco exterior de reacción (15) de mayor dimensión que incorpora un transductor de carga (7) y un segundo marco interior (16) de aplicación de carga que se fija sobre una bancada edométrica (1), asentando sobre ésta una célula edométrica (2), sobre la que presiona un elemento regulable en altura (9) anclado en el marco interior (16), elemento sobre el cual contacta a su vez el extremo inferior del transductor de carga (7) fijado en el marco exterior (15).To do this, the improvements include basic-
mind a first outer reaction frame (15) of larger dimension that incorporates a load transducer (7) and a second inner frame (16) of load application that is fixed on an oedometric bench (1), seating a cell on it Oedometric (2), on which it presses a height adjustable element (9) anchored in the inner frame (16), element on which in turn contacts the lower end of the load transducer (7) fixed in the outer frame ( fifteen).

Description

Perfeccionamientos en edómetros para aplicación de cargas en células edométricas.Improvements in edometers for application of loads in oedometric cells.

Objeto de la invenciónObject of the invention

La presente invención, según se expresa en el enunciado de esta memoria descriptiva, se refiere a unos perfeccionamientos en edómetros para aplicación de cargas en células edométricas. El edómetro tiene en principio la finalidad de medir el grado de compresión unidimensional de un suelo, basándose los perfeccionamientos de la invención en unos medios de adaptación del edómetro para poder aplicar cargas en células edométricas de hasta 210 mm de diámetro con o sin control de la succión.The present invention, as expressed in the set forth in this specification, refers to some improvements in edometers for application of loads in cells Oedometric The Oedometer has in principle the purpose of measuring the degree of one-dimensional compression of a soil, based on improvements of the invention in means of adapting the Oedometer to be able to apply loads in edometric cells of up to 210 mm in diameter with or without suction control.

La aplicación de la invención se enmarca dentro de las series científicas de la ingeniería del terreno y la ingeniería mecánica.The application of the invention is framed within of the scientific series of ground engineering and mechanical Engineering.

Más concretamente los sectores de actividad y tecnológicos en los que serían de aplicación la invención serían los campos de la mecánica del suelo, presas, terraplenes de carreteras, cimentaciones y también los aparatos científicos.More specifically the activity sectors and technology in which the invention would apply would be the fields of soil mechanics, dams, road embankments, foundations and also scientific devices.

Estos campos de actividades son propios de la investigación, la ingeniería civil y geotécnica, la geología y la arquitectura.These fields of activities are typical of the research, civil and geotechnical engineering, geology and architecture.

Antecedentes de la invenciónBackground of the invention

El edómetro convencional, como elemento habitual en un laboratorio de mecánica del suelo, está diseñado para células edométricas de hasta 150 mm de diámetro, con alturas máximas de 90 mm.The conventional oedometer, as usual element in a soil mechanics laboratory, it is designed for cells Oedometers up to 150 mm in diameter, with maximum heights of 90 mm

Este tipo de edómetro, en su configuración convencional, no es viable actualmente para su uso con las nuevas células edométricas que están apareciendo en el mercado conforme avanzan las investigaciones en mecánica del suelo parcialmente saturado. Estas nuevas células, debido al control de la succión que llevan incorporado y a los requerimientos mecánicos que este control les impone, necesitan ampliar su tamaño hasta un valor del orden del doble de su valor convencional, tanto en diámetro como en altu-
ra.This type of oedometer, in its conventional configuration, is currently not viable for use with the new oedometric cells that are appearing on the market as the research on partially saturated soil mechanics progresses. These new cells, due to the control of the suction that they have incorporated and to the mechanical requirements that this control imposes on them, need to expand their size to a value of the order of double their conventional value, both in diameter and height.
ra.

Actualmente, la posibilidad de uso de estas células edométricas en los ensayos de laboratorio convencionales pasa por su colocación en bancadas edométricas de gran tamaño que no son habituales en la mecánica del suelo, ya que, además de su elevado coste, generan problemas para su instalación debido a que requieren un gran espacio dentro de un laboratorio, pasando a desecharse los edómetros comunes.Currently, the possibility of using these Oedometric cells in conventional laboratory tests it goes through its placement in large oedometric benches that do not they are common in soil mechanics, since, in addition to their high cost, generate problems for installation because they require a large space inside a laboratory, moving on to discard common edometers.

Descripción de la invenciónDescription of the invention

Con el fin de alcanzar los objetivos y evitar los inconvenientes mencionados en los apartados anteriores, la invención propone unos perfeccionamientos en edómetros para aplicación de cargas en células edométricas de hasta 210 mm de diámetro con o sin control de la succión.In order to achieve the objectives and avoid the drawbacks mentioned in the previous sections, the invention proposes improvements in edometers for application of loads in oedometric cells up to 210 mm of diameter with or without suction control.

Los perfeccionamientos de la invención comprenden dos partes bien diferenciadas con unas características estructuras con respecto a los antecedentes existentes en su campo de aplicación.The improvements of the invention they comprise two distinct parts with characteristics structures with respect to the background in your field of application.

Una primera parte consiste en un nuevo marco de aplicación de carga, el cual se compone de dos vástagos laterales y un travesaño en el que se coloca un tornillo de regulación que permite el ajuste entre el sistema de aplicación de carga y la célula edométrica. Este marco se acopla al cuerpo de un edómetro, permitiéndose de esta forma un acople perfecto que se realiza por procedimiento de atornillado u otro sistema adecuado.A first part consists of a new framework of loading application, which is composed of two lateral stems and a crossbar in which a regulating screw is placed that allows adjustment between the charging application system and the Oedometric cell This frame is attached to the body of an edometer, allowing in this way a perfect coupling that is made by screwing procedure or other suitable system.

Una segunda parte consistente en un marco de reacción, compuesto por un dintel con altura regulable en función del tamaño del transductor de carga usado y dos soportes atornillados en sus bases a través de las correspondientes placas de anclaje y tornillos, siendo viable su instalación en cualquier tipo de superficie.A second part consisting of a framework of reaction, consisting of a lintel with height adjustable function the size of the load transducer used and two brackets screwed into their bases through the corresponding plates of anchor and screws, being viable installation in any type Of surface.

El transductor de carga queda anclado así al dintel del marco de reacción a través de un tornillo que realiza la función de prisionero.The load transducer is thus anchored to the lintel of the reaction frame through a screw that performs the prisoner function.

Tanto el marco de aplicación de carga como el marco de reacción se han concebido con uniones atornilladas que permiten su fácil montaje y desmontaje, facilitando el cambio de configuración del edómetro convencional tanto para células de tamaños habituales como para células de gran diámetro.Both the load application framework and the reaction frame have been conceived with bolted joints that allow easy assembly and disassembly, facilitating the change of configuration of the conventional oedometer for both cells usual sizes as for large diameter cells.

A continuación para facilitar una mejor comprensión de esta memoria descriptiva y formando parte integrante de la misma se acompañan unas figuras en las que con carácter ilustrativo y no limitativo se ha representado el objeto de la invención.Next to facilitate a better understanding of this descriptive report and being an integral part of the same accompany some figures in which with character illustrative and not limiting the object of the invention.

Breve descripción de los dibujosBrief description of the drawings

Figura 1.- Muestra una vista en perspectiva explosionada de los perfeccionamientos en edómetros para aplicación de cargas en células edométricas, objeto de la invención.Figure 1.- Shows a perspective view exploded of improvements in edometers for application of loads in oedometric cells, object of the invention.

Figura 2.- Muestra una vista en perspectiva de un edómetro con los perfeccionamientos de la invención.Figure 2.- Shows a perspective view of an oedometer with the improvements of the invention.

Descripción de la forma de realización preferidaDescription of the preferred embodiment

Considerando la numeración adoptada en las figuras, los perfeccionamientos en edómetros comprenden en principio un primer conjunto de marco exterior de reacción (15) de mayor dimensión y un segundo conjunto de marco interior (16) de aplicación de carga que es de menor tamaño que el primero.Considering the numbering adopted in the figures, improvements in edometers include in principle a first outer reaction frame assembly (15) of greater dimension and a second set of interior frame (16) of application of load that is smaller than the first.

El marco de reacción (15) comprende a su vez un dintel (3) acoplado en dos columnas laterales (4) constitutivas del soporte del marco (15), de manera que tales columnas laterales (4) poseen unos tramos roscados superiores (18) que se complementan con unos orificios pasantes (19) del dintel (3) para permitir el acoplamiento regulable en altura del mismo, fijándose cada posición con ayuda de unos pares de tuercas (5) acopladas en los tramos roscados citados (18) con interposición de unas arandelas (5').The reaction frame (15) in turn comprises a lintel (3) coupled in two lateral columns (4) constituting the frame support (15), so that such lateral columns (4) they have upper threaded sections (18) that are complemented by through holes (19) of the lintel (3) to allow height-adjustable coupling thereof, fixing each position with the help of a couple of nuts (5) coupled in the sections cited threads (18) with interposition of washers (5 ').

En el dintel (3) se puede alojar un transductor de carga (7) que queda fijado al mismo a través de un tornillo prisionero (8) con lo que se permite el registro digital de la variable fuerza.A transducer can be housed in the lintel (3) of load (7) that is fixed to it through a screw prisoner (8) with which the digital registration of the variable force

Todo este primer conjunto de marco exterior (15) queda fijado en su posición definitiva a través de unas placas base (17) dispuestas en los extremos inferiores de las columnas laterales (4), placas base (17) que se anclan a cualquier superficie mediante unos tornillos (6) y sus correspondientes tacos no representados en las figuras u otros medios de fijación adecuados.All this first set of outer frame (15) is fixed in its final position through some base plates (17) arranged at the lower ends of the side columns (4), base plates (17) that are anchored to any surface by screws (6) and their corresponding plugs not shown in the figures or other suitable fixing means.

El segundo conjunto de marco interior (16) comprende dos vástagos laterales (11) con tramos roscados inferiores (21') y otros tramos roscados superiores (21) donde se acopla un travesaño (10) afectado de unos orificios pasantes complementarios (20) con tales tramos roscados superiores (21) de los vástagos laterales (11) para facilitar el acoplamiento de éstos con respecto al travesaño superior (10) con ayuda de unas tuercas (13) y arandelas (13').The second interior frame set (16) comprises two lateral stems (11) with lower threaded sections (21 ') and other upper threaded sections (21) where a crossbar (10) affected by complementary through holes (20) with such upper threaded sections (21) of the stems sides (11) to facilitate the coupling of these with respect to the upper cross member (10) with the help of nuts (13) and washers (13 ').

En los tramos inferiores roscados (21') de las columnas (11) del marco menor (16) se acoplan unas piezas de fijación (12), las cuales poseen unos orificios pasantes (26) donde se ajustan sus tramos inferiores roscados (21'), asegurándose la unión mediante unas tuercas (27) y arandelas (27').In the threaded lower sections (21 ') of the columns (11) of the smaller frame (16) are coupled pieces of fixing (12), which have through holes (26) where their threaded lower sections (21 ') are adjusted, ensuring the union by means of nuts (27) and washers (27 ').

Esta estructura de marco interior (16) descrita se conecta a una bancada edométrica convencional (1) (figura 1) a través de las citadas piezas de fijación (12) que poseen unos entrantes (23) donde se ajustan unos topes (24) solidarios de los laterales de la citada bancada (1), asegurándose la conexión mediante una unión atornillada en la que participan unos tornillos (14), tuercas (22) y arandelas (22').This interior frame structure (16) described it is connected to a conventional oedometric bench (1) (figure 1) a through the aforementioned fixing pieces (12) that have some incoming (23) where some stops (24) integral with the sides of said bench (1), ensuring the connection by means of a screw connection in which some screws participate (14), nuts (22) and washers (22 ').

El travesaño superior (10) del marco de aplicación de carga (16) incorpora un tornillo de ajuste (9) con contratuerca (25) que permite el ajuste del citado marco de aplicación de carga (16), una célula edométrica (2) y el transductor de carga (7), cuyo extremo inferior está en contacto con la cabeza del citado tornillo de ajuste (9).The upper crossbar (10) of the frame loading application (16) incorporates an adjustment screw (9) with locknut (25) that allows the adjustment of said frame of load application (16), an oedometric cell (2) and the transducer of load (7), whose lower end is in contact with the head of said adjustment screw (9).

Por otro lado, cabe señalar que las posibilidades de aplicación de la invención se circunscriben en la realización de los siguientes ensayos:On the other hand, it should be noted that possibilities of application of the invention are limited in the performing the following tests:

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Edómetricos con succión controlada.Oedometric with suction controlled.

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Presión de hinchamiento.Swelling pressure

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Inundación bajo carga.Flood under load.

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Hinchamiento libre, etc.Free swelling, etc.

Claims (8)

1. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, que estando encaminados los perfeccionamientos para poder aplicar cargas en células edométricas de hasta 210 mm de diámetro con o sin control de la succión, se caracterizan porque comprenden:1. Improvements in oedometers for application of loads in oedometric cells, which being perfected to be able to apply loads in oedometric cells up to 210 mm in diameter with or without suction control, are characterized because they comprise: - Un marco exterior de reacción (15) de mayor dimensión que comprende en principio dos columnas laterales (4) de fijación sobre una superficie inferior y un dintel (3) regulable en altura donde se ha fijado un transductor de carga (7);- An external reaction frame (15) of greater dimension comprising in principle two lateral columns (4) of fixation on a lower surface and a lintel (3) adjustable in height where a load transducer (7) has been fixed; - un marco interior (16) de aplicación de carga que comprende dos vástagos laterales (11) y un travesaño (10) donde se acopla un elemento centrado regulable en altura (9), tal como un tornillo, sobre cuya cabeza contacta el extremo libre del transductor de carga (7), incorporándose además medios de fijación del marco interior (16) sobre una bancada edométrica (1), sobre la que presiona la cara inferior de una célula edométrica (2) mientras que sobre su cara superior presiona el elemento roscado(9) regulable en altura instalado en el marco interior (16).- an inner frame (16) of load application comprising two lateral stems (11) and a crossbar (10) where a height-adjustable centered element (9) is coupled, such as a screw, on whose head it contacts the free end of the load transducer (7), also incorporating fixing means of the inner frame (16) on an oedometric bench (1), on the which presses the underside of an oedometric cell (2) while which on its upper face presses the threaded element (9) height adjustable installed in the inner frame (16). 2. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según la reivindicación anterior, caracterizados porque las columnas laterales (4) del marco mayor (15) incorporan unos tramos roscados superiores (18) ajustados en unos orificios laterales (19) del dintel (3), a la vez que en tales tramos roscados (18) se acoplan pares de tuercas (5) y arandelas (5') como medios para regular la altura del dintel (3).2. Improvements in oedometers for application of loads in oedometric cells, according to the preceding claim, characterized in that the lateral columns (4) of the main frame (15) incorporate upper threaded sections (18) adjusted in lateral holes (19) of the lintel (3), while in such threaded sections (18) pairs of nuts (5) and washers (5 ') are coupled as means to regulate the height of the lintel (3). 3. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según una cualquiera de las reivindicaciones anteriores, caracterizados porque las columnas laterales (4) del marco mayor (15) incorporan en sus extremos inferiores unas placas base (17) para fijación del citado marco (15) sobre una superficie con ayuda de elementos de anclaje, tales como tornillos (6).3. Improvements in edometers for application of loads in oedometric cells, according to any one of the preceding claims, characterized in that the lateral columns (4) of the major frame (15) incorporate in their lower ends base plates (17) for fixing said frame (15) on a surface with the help of anchoring elements, such as screws (6). 4. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según una cualquiera de las reivindicaciones anteriores, caracterizados porque los medios de fijación del marco interior (16) con respecto a la bancada edométrica (1), consisten tales medios en unas piezas (12) ancladas inferiormente en los vástagos del citado marco (16), piezas (12) que poseen unos entrantes (23) complementados con unos topes (24) solidarios de la bancada edométrica (1), asegurándose la fijación con al menos unos tornillos (14) y tuercas (22).4. Improvements in edometers for application of loads in oedometric cells, according to any one of the preceding claims, characterized in that the fixing means of the inner frame (16) with respect to the oedometric bench (1), such means consist of parts ( 12) anchored inferiorly in the stems of the aforementioned frame (16), pieces (12) that have recesses (23) complemented with stops (24) integral with the oedometric bench (1), ensuring the fixation with at least some screws ( 14) and nuts (22). 5. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según la reivindicación 4, caracterizados porque las piezas de fijación (12) poseen unos orificios pasantes (26) donde se ajustan unos tramos roscados inferiores (21') de los vástagos laterales (11), asegurándose la inmovilización de tales piezas (12) mediante unas tuercas (27) y arandelas (27').5. Improvements in oedometers for application of loads in oedometric cells, according to claim 4, characterized in that the fixing pieces (12) have through holes (26) where lower threaded sections (21 ') of the lateral stems ( 11), ensuring the immobilization of such parts (12) by means of nuts (27) and washers (27 '). 6. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según una cualquiera de las reivindicaciones anteriores, caracterizados porque el travesaño (10) del marco interior (16) cuenta con unos orificios pasantes (20) donde se ajustan unos tramos superiores roscados (21) de los vástagos (11) para solidarizar éstos con dicho travesaño (10) con ayuda de unos pares de tuercas (13) y arandelas (13').6. Improvements in oedometers for application of loads in oedometric cells, according to any one of the preceding claims, characterized in that the crossbar (10) of the inner frame (16) has through holes (20) where threaded upper sections ( 21) of the rods (11) to support these with said crossbar (10) with the help of a couple of nuts (13) and washers (13 '). 7. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según una cualquiera de las reivindicaciones anteriores, caracterizados porque el transductor de carga (7) se inmoviliza al dintel (3) del marco exterior (15) mediante un tornillo prisionero (8).7. Improvements in oedometers for application of loads in oedometric cells, according to any one of the preceding claims, characterized in that the load transducer (7) is immobilized to the lintel (3) of the outer frame (15) by means of a captive screw (8) . 8. Perfeccionamientos en edómetros para aplicación de cargas en células edométricas, según una cualquiera de las reivindicaciones anteriores, caracterizados porque el elemento roscado regulable en altura (9) acoplado en el travesaño (10) del marco menor (16) se complementa con una contratuerca (25) como medio para inmovilizar su posición.8. Improvements in oedometers for application of loads in oedometric cells, according to any one of the preceding claims, characterized in that the height adjustable threaded element (9) coupled to the cross member (10) of the smaller frame (16) is complemented by a lock nut (25) as a means to immobilize its position.
ES200803283A 2008-11-18 2008-11-18 PERFECTION IN EDOMETERS FOR APPLICATION OF LOADS IN EDOMETRIC CELLS. Active ES2349967B1 (en)

Priority Applications (2)

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ES200803283A ES2349967B1 (en) 2008-11-18 2008-11-18 PERFECTION IN EDOMETERS FOR APPLICATION OF LOADS IN EDOMETRIC CELLS.
PCT/ES2009/000536 WO2010058045A2 (en) 2008-11-18 2009-11-17 Improvements to oedometers for applying loads in oedometer cells

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US9557254B2 (en) 2012-03-07 2017-01-31 Saudi Arabian Oil Company Portable device and method for field testing proppant
CN108680723A (en) * 2018-04-03 2018-10-19 温州大学 Consolidation apparatus
CN110108852B (en) * 2019-04-26 2021-07-06 武汉科技大学 Loading-controllable and size-adjustable analog simulation test device

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GB690204A (en) * 1951-06-05 1953-04-15 George William Stockton Apparatus for use in determining the characteristics of coated metal sheets
US2760370A (en) * 1954-05-17 1956-08-28 Us Rubber Co Motor-driven load-deflection tester
US2811038A (en) * 1954-07-19 1957-10-29 Reuben H Karol Apparatus for the consolidation of materials
GB1224314A (en) * 1967-03-09 1971-03-10 Wykeham Farrance Engineering L Improvements relating to oedometers
FR1586414A (en) * 1968-08-01 1970-02-20
GB1501083A (en) * 1973-12-22 1978-02-15 Parry R Testing of soils and like materials
CA2306275C (en) * 1999-04-23 2009-11-03 Bio Syntech Canada Inc. Universal mechanical testing device

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