ES2361433A1 - Reinforced concrete structure (Machine-translation by Google Translate, not legally binding) - Google Patents
Reinforced concrete structure (Machine-translation by Google Translate, not legally binding) Download PDFInfo
- Publication number
- ES2361433A1 ES2361433A1 ES200902152A ES200902152A ES2361433A1 ES 2361433 A1 ES2361433 A1 ES 2361433A1 ES 200902152 A ES200902152 A ES 200902152A ES 200902152 A ES200902152 A ES 200902152A ES 2361433 A1 ES2361433 A1 ES 2361433A1
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- Prior art keywords
- fibers
- concrete
- reinforcing material
- constituted
- aramid
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- 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.)
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- 239000011150 reinforced concrete Substances 0.000 title claims description 8
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000004760 aramid Substances 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 15
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 14
- 239000012779 reinforcing material Substances 0.000 claims abstract description 10
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012615 aggregate Substances 0.000 claims abstract description 5
- 239000012634 fragment Substances 0.000 claims abstract description 5
- 239000002344 surface layer Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 15
- 230000002787 reinforcement Effects 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 206010016256 fatigue Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/065—Polyacrylates; Polymethacrylates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0691—Polyamides; Polyaramides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Reinforcement Elements For Buildings (AREA)
- Laminated Bodies (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Estructura de hormigón reforzado.Reinforced concrete structure.
La presente invención se refiere a una estructura de hormigón reforzado destinada a soportar grandes cargas y esfuerzos de cizalladura y tracción con un menor peso.The present invention relates to a reinforced concrete structure designed to withstand large loads and shear and tensile stresses with a lower weight.
En la actualidad el hormigón es muy utilizado para la realización de construcciones de ingeniería civil y de arquitectura en general.Nowadays concrete is widely used for the realization of civil engineering constructions and of architecture in general.
El hormigón está constituido principalmente con una mezcla de agua, cemento y áridos, que una vez fraguada conforma un elemento sólido que soporta muy bien esfuerzos de compresión, pero no de tracción y cizalladura. Para mejorar las condiciones del hormigón, se añaden elementos de armado, principalmente varillas y armaduras complejas de hierro, y que son pretensadas para que la pieza de hormigón realizada mejore sus propiedades mecánicas.The concrete consists mainly of a mixture of water, cement and aggregates, which once set forms a solid element that supports compression efforts very well, but not traction and shear. To improve the conditions of concrete, reinforced elements are added, mainly rods and complex iron armor, and which are prestressed so that the piece of concrete made improve its mechanical properties.
También es conocido el añadido al hormigón de otras sustancias de refuerzo, por ejemplo partículas de fibra de vidrio, que una vez ha fraguado el cemento permiten obtener una mejor microestructura del hormigón.It is also known the addition to concrete of other reinforcing substances, for example fiber particles of glass, which once the cement has set allows to obtain a Better concrete microstructure.
Sin embargo la combinación de las técnicas anteriores no ofrece resultados duraderos, ya que las fibras de vidrio se pueden ver atacadas químicamente por los álcalis del hormigón y las varillas y armaduras de hierro se oxidan por efecto de la humedad y el agua.However the combination of techniques previous offers no lasting results, since the fibers of glass can be seen chemically attacked by the alkalis of the concrete and iron rods and reinforcements oxidize by effect of moisture and water.
La estructura de hormigón reforzado, objeto de esta invención, presenta unas particularidades técnicas destinadas a ofrecer una respuesta mecánica mejorada, sobre todo en esfuerzos a tracción y a cizalladura y una duración prolongada, principalmente mediante la utilización de materiales inertes a la agresión de la intemperie o de otros materiales del hormigón. Así esta estructura se puede realizar en la propia obra o constituir elementos prefabricados que se unen o incorporan en la construcción final.The reinforced concrete structure, object of This invention presents some technical peculiarities for offer an improved mechanical response, especially in efforts to traction and shear and prolonged duration, mainly by using materials inert to the aggression of the weathering or other concrete materials. So this structure it can be done in the work itself or constitute elements prefabricated that join or incorporate in the final construction.
La estructura de hormigón reforzado, comprenden una masa fraguada de cemento, áridos, agua, y uno o más materiales de refuerzo.The reinforced concrete structure, comprise a set mass of cement, aggregates, water, and one or more materials reinforcement
De acuerdo con la invención el material de refuerzo comprende unas fibras, tejidos y/o cordones constituidos por al menos uno de los siguientes tipos de fibras: fibras de carbono, fibras de aramida, y fibras poliacrílicas.According to the invention the material of reinforcement comprises fibers, fabrics and / or cords constituted by at least one of the following types of fibers: carbon, aramid fibers, and polyacrylic fibers.
En una primera realización el material de refuerzo está constituido por fibras de aramida y fibras poliacrílicas, cortadas en fragmentos y mezcladas con el hormigón. Estas fibras cortadas en fragmentos mejoran la resistencia en las tres dimensiones de la estructura y evita la formación de microfisuras en el hormigón por esfuerzos de tracción y cizalladura principalmente. Las fibras cortadas en fragmentos proporcionan un aumento del módulo resistente del material. Estas fibras presentan una alta adherencia química y mecánica con la matriz cimentada. Una resistencia sin degradación, estabilidad a largo plazo y son resistentes a los agentes biológicos. Además las fibras presentan una elevada resistencia térmica y a la rotura, y aportan una reducción de ruido y tolerancia a dilataciones.In a first embodiment the material of reinforcement consists of aramid fibers and fibers polyacrylic, cut into fragments and mixed with concrete. These fragmented fibers improve the resistance in the three dimensions of the structure and prevents the formation of microcracks in concrete by tensile and shear stress mainly. The fragmented fibers provide a increase of the resistant module of the material. These fibers have high chemical and mechanical adhesion with the foundation matrix. A resistance without degradation, long-term stability and are resistant to biological agents. In addition the fibers present high thermal and breakage resistance, and provide a noise reduction and dilation tolerance.
Por ejemplo, las fibras de aramida y las fibras poliacrílicas presentan una finura de 2,5 dtex y una longitud de 8 a 36 milímetros.For example, aramid fibers and fibers Polyacrylics have a fineness of 2.5 dtex and a length of 8 to 36 mm
En una realización el material de refuerzo está constituido por un tejido abierto de fibras de carbono empotrado, al menos parcialmente, en la capa superficial de la estructura de hormigón.In one embodiment the reinforcing material is constituted by an open weave of embedded carbon fibers, at less partially, in the surface layer of the structure of concrete.
Este tejido abierto es poroso, en forma de panal y presenta unos orificios o aberturas para el paso del hormigón, garantizando así una unión mecánica firme. Es un tejido con mucho volumen tridimensional para que el hormigón penetre en los orificios y después del fraguado presente suficiente adherencia. Además este tejido abierto es muy flexible y se adapta con facilidad a cualquier configuración exterior que tenga que presentar la estructura de hormigón armado facilitando su manipulación.This open weave is porous, honeycomb and has holes or openings for the passage of concrete, thus guaranteeing a firm mechanical bond. It is a fabric with a lot three-dimensional volume for the concrete to penetrate the holes and after setting present sufficient adhesion. Also this Open fabric is very flexible and easily adapts to any exterior configuration that has to present the structure of reinforced concrete facilitating its handling.
En una realización de la invención el material de refuerzo comprende una o varias capas de tejido de alta densidad de fibras de carbono, alternadas con capas de resina de epoxi, y dispuestas sobre la superficie exterior de la estructura de hormigón.In an embodiment of the invention the material reinforcement comprises one or several layers of high density fabric of carbon fibers, alternated with layers of epoxy resin, and arranged on the outer surface of the structure of concrete.
Estas capas exteriores presentan tramas en múltiples direcciones que permiten redistribuir los esfuerzos de estiramiento y cizalladura.These outer layers have frames in multiple addresses that allow redistributing the efforts of stretching and shearing.
Estas capas exteriores de fibras de carbono son útiles en la realización de vigas, ya sean de sección circular o rectangular, las cuales permiten reforzar otras estructuras de mayor envergadura, tal como elemento semi-prefabricados. Estas capas exteriores de fibras de carbono con epoxi mejoran el agarre de la viga dentro de estructuras de mayor envergadura.These outer layers of carbon fibers are useful in the realization of beams, whether of circular section or rectangular, which allow to reinforce other structures of greater wingspan, such as semi-prefabricated element. These outer layers of carbon fibers with epoxy improve the grip of the beam within larger structures.
En una realización de la invención, los materiales de refuerzo están constituidos por unos cables trenzados de fibras de aramida formando elementos resistentes interiores. Estos cables trenzados de fibras de aramida están pretensados, permitiendo obtener un incremento de la resistencia a tracción y a la cizalladura considerable con una gran reducción del peso de la estructura.In an embodiment of the invention, the reinforcement materials consist of twisted cables of aramid fibers forming resistant inner elements. These stranded aramid fiber cables are pre-tensioned, allowing to obtain an increase in tensile strength and considerable shear with a large reduction in the weight of the structure.
Esta estructura permite obtener resultados
satisfactorios en: placas con alta resistencia para suelos
circulación maquinaria pesada, vigas que sufran fatigas de
vibraciones o sísmicas, estructuras especiales que requieren alta
resistencia, menor peso estructural y mayor resistencia,
edificaciones antisísmicas, placas para edificaciones y placas para
fachada entre
otros.This structure allows to obtain satisfactory results in: plates with high resistance for heavy machinery circulation floors, beams that suffer fatigue or seismic fatigue, special structures that require high resistance, lower structural weight and greater resistance, earthquake buildings, building plates and plates for facade between
others.
Para complementar la descripción que se está realizando y con objeto de facilitar la comprensión de las características de la invención, se acompaña a la presente memoria descriptiva un juego de dibujos en los que, con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:
- La figura 1 muestra una vista esquematizada de una porción de hormigón donde se observa la distribución tridimensional de las fibras cortadas en fragmentos en el seno del hormigón fraguado.- Figure 1 shows a schematic view of a portion of concrete where the distribution is observed three-dimensional fibers cut into fragments within the set concrete.
- La figura 2 muestra un detalle seccionado del tejido abierto de fibras de carbono, empotrado superficialmente en el hormigón.- Figure 2 shows a sectioned detail of the open carbon fiber fabric, surface embedded in the concrete.
- La figura 3 muestra un detalle seccionado del tejido abierto de fibras de carbono empotrado en el seno del hormigón a mayor profundidad.- Figure 3 shows a sectioned detail of the open weave of carbon fibers embedded within the deeper concrete.
- La figura 4 muestra una sección esquematizada de una estructura en forma de viga, que presenta el material de refuerzo conformado por la capa de tejido abierto de fibras de carbono empotrado superficialmente y las capas de tejido de alta densidad de fibras de carbono y resina de epoxi alternadas exteriormente.- Figure 4 shows a schematic section of a beam-shaped structure, which presents the material of reinforcement formed by the open weave layer of fibers of surface recessed carbon and high tissue layers density of alternating carbon fibers and epoxy resin externally.
- La figura 5 muestra una sección esquematizada de una estructura en forma de viga de sección circular presenta una combinación de los materiales refuerzo constituidos por: fibras de aramida y poliacrílicas cortadas, tejido abierto de fibras de carbono empotrado superficialmente, tejido de alta densidad de fibras de carbono alternadas con capas de resina epoxi, y cables trenzados de fibras de aramida para su armado interior.- Figure 5 shows a schematic section of a beam-shaped structure of circular section presents a combination of reinforcement materials consisting of: fibers of aramid and polyacrylic cut, open fiber fabric surface embedded carbon, high density fabric alternating carbon fibers with epoxy resin layers, and cables braided aramid fibers for its interior assembly.
Como se puede observar en las figuras referenciadas la estructura de hormigón reforzado comprende una masa fraguada de cemento, áridos, agua y unos materiales de refuerzo de dicho hormigón (H). Estos materiales de refuerzo comprenden fibras de aramida y fibras poliacrílicas, cortadas en fragmentos (1) y mezcladas con el hormigón (H), tal como se representa en la figura 1.As can be seen in the figures referenced reinforced concrete structure comprises a mass Forged cement, aggregates, water and reinforcement materials said concrete (H). These reinforcing materials comprise fibers of aramid and polyacrylic fibers, cut into fragments (1) and mixed with concrete (H), as shown in the figure one.
En una realización, el material de refuerzo está constituido por un tejido abierto (2) de fibras de carbono empotrado en la capa superficial de la estructura de hormigón (H), tal como se muestra en la figura 2, Este tejido abierto (2) de fibras de carbono presenta una configuración porosa con unos orificios o aberturas, y un volumen tridimensional considerable, habilitando el paso del hormigón (H) y la fijación mecánica firme después del fraguado. En la figura 2 se observa como dicho tejido abierto (2) se dispone superficialmente, en tanto que en la figura 3, el tejido abierto (2) está dispuesto en el interior del hormigón (H).In one embodiment, the reinforcing material is constituted by an open fabric (2) of embedded carbon fibers in the surface layer of the concrete structure (H), as shown in figure 2, This open weave (2) of carbon fibers it has a porous configuration with holes or openings, and a considerable three-dimensional volume, enabling the passage of concrete (H) and firm mechanical fixation after setting. In Figure 2 shows how said open tissue (2) is arranged superficially, while in Figure 3, the open tissue (2) It is arranged inside the concrete (H).
En la figura 4 se representa una estructura, más concretamente una viga de sección rectangular, la cual presenta añadidas en su exterior unas capas de tejido de alta densidad (3) de fibras de carbono, estando estas capas de tejido de alta densidad (3) de fibras de carbono alternadas con capas de resina de epoxi (4) que las fija al hormigón (H) y al tejido abierto (2), evitando deslizamientos por los esfuerzos de tracción y cizalladura.Figure 4 shows a structure, plus specifically a rectangular section beam, which has external layers of high density fabric (3) of carbon fibers, these layers of high density fabric being (3) of carbon fibers alternated with epoxy resin layers (4) which fixes them to concrete (H) and open fabric (2), avoiding landslides by tensile and shear stress.
En una realización, una viga tal como la viga anteriormente descrita, se refuerza mediante la colocación en su interior de unos cables trenzados de fibras de aramida, formando unos elementos resistentes interiores, distribuidos longitudinalmente, a modo de armaduras, que en este caso están pretensadas para aumentar las propiedades mecánicas respecto a resistencia a la tracción y a la cizalladura.In one embodiment, a beam such as the beam previously described, it is reinforced by placing inside of stranded wires of aramid fibers, forming resistant interior elements, distributed longitudinally, by way of armor, which in this case are prestressed to increase mechanical properties with respect to tensile and shear resistance.
Una vez descrita suficientemente la naturaleza de la invención, así como un ejemplo de realización preferente, se hace constar a los efectos oportunos que los materiales, forma, tamaño y disposición de los elementos descritos podrán ser modificados, siempre y cuando ello no suponga una alteración de las características esenciales de la invención que se reivindican a continuación.Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.
Claims (6)
(H).2. Structure according to claim 1, characterized in that the reinforcing material consists of aramid fibers and polyacrylic fibers, cut into fragments (1) and mixed with the concrete
(H).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200902152A ES2361433B1 (en) | 2009-11-12 | 2009-11-12 | REINFORCED CONCRETE STRUCTURE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200902152A ES2361433B1 (en) | 2009-11-12 | 2009-11-12 | REINFORCED CONCRETE STRUCTURE. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2361433A1 true ES2361433A1 (en) | 2011-06-17 |
| ES2361433B1 ES2361433B1 (en) | 2012-04-04 |
Family
ID=44072799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200902152A Expired - Fee Related ES2361433B1 (en) | 2009-11-12 | 2009-11-12 | REINFORCED CONCRETE STRUCTURE. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2361433B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999058468A1 (en) * | 1998-05-14 | 1999-11-18 | Bouygues | Concrete comprising organic fibres dispersed in a cement matrix, concrete cement matrix and premixes |
| WO2002016281A1 (en) * | 2000-08-21 | 2002-02-28 | Lafarge S.A. | Hydraulic binder concrete for making prefabricated tiles, panels and the like |
| ES2244683T3 (en) * | 2001-03-29 | 2005-12-16 | Ruredil S.P.A. | MORTAR OF CEMENT, STRUCTURE AND METHOD TO REINFORCE BUILDING COMPONENTS. |
| US20080050612A1 (en) * | 1990-06-19 | 2008-02-28 | Dry Carolyn M | Self-Repairing, Reinforced Matrix Materials |
| JP2009298636A (en) * | 2008-06-12 | 2009-12-24 | Teijin Techno Products Ltd | Staple fiber for reinforcing cement |
-
2009
- 2009-11-12 ES ES200902152A patent/ES2361433B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080050612A1 (en) * | 1990-06-19 | 2008-02-28 | Dry Carolyn M | Self-Repairing, Reinforced Matrix Materials |
| WO1999058468A1 (en) * | 1998-05-14 | 1999-11-18 | Bouygues | Concrete comprising organic fibres dispersed in a cement matrix, concrete cement matrix and premixes |
| WO2002016281A1 (en) * | 2000-08-21 | 2002-02-28 | Lafarge S.A. | Hydraulic binder concrete for making prefabricated tiles, panels and the like |
| ES2244683T3 (en) * | 2001-03-29 | 2005-12-16 | Ruredil S.P.A. | MORTAR OF CEMENT, STRUCTURE AND METHOD TO REINFORCE BUILDING COMPONENTS. |
| JP2009298636A (en) * | 2008-06-12 | 2009-12-24 | Teijin Techno Products Ltd | Staple fiber for reinforcing cement |
Non-Patent Citations (1)
| Title |
|---|
| BASE DE DATOS WPI EN EPOQUE, AN 2009-S58717 & JP 2009298636 A (TEIJIN TECHNO), 24.12.2009, resumen. * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2361433B1 (en) | 2012-04-04 |
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