DE1184688B - Tubular insert intended for post-treatment of fresh concrete - Google Patents
Tubular insert intended for post-treatment of fresh concreteInfo
- Publication number
- DE1184688B DE1184688B DET13926A DET0013926A DE1184688B DE 1184688 B DE1184688 B DE 1184688B DE T13926 A DET13926 A DE T13926A DE T0013926 A DET0013926 A DE T0013926A DE 1184688 B DE1184688 B DE 1184688B
- Authority
- DE
- Germany
- Prior art keywords
- treatment
- post
- fresh concrete
- concrete
- tubular insert
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/061—Solidifying concrete, e.g. by application of vacuum before hardening by applying vacuum or vacuum combined with vibration
Description
Schlauchförmige, zur Nachbehandlung von frischem Beton bestimmten Einlage Die Erfindung bezieht sich auf eine schlauchförmige, zur Nachbehandlung von frischem Beton, wie Entzug des überflüssigen Arunachwassers, bestimmte Einlage im Beton.Tubular, intended for the post-treatment of fresh concrete Insert The invention relates to a tubular, for post-treatment of fresh concrete, such as removal of the superfluous Arunach water, certain insert in concrete.
Es sind bereits rohrförnüge Filter bekannt, dessen aus Filtermaterial bestehende Rohrkörper um ein Skelett herum angeordnet sind, welches aus einer oder mehreren Schraubenfedern besteht, die sich längs einer der Erzeugenden des Rohres erstrecken und die Ringe, an denen sie befestigt sind, auf Distanz halten.There are already rohrförnuge filters known whose tubular bodies made of filter material are arranged around a skeleton which consists of one or more helical springs which extend along one of the generators of the tube and keep the rings to which they are attached at a distance.
Diese bekannten Skelettformen ermöglichen das Reinigen des Filters, indem nach Verkürzung des Filters infolge eines auf den oder die Schraubenfedern wirkenden Kompressionsdruckes diese plötzlich entspannt werden, wodurch die Filterhülsen geschüttelt werden, so daß das an diesen anhaftende Material abfällt. Bei diesen bekannten Filtern wurde jedoch nicht dafür Sorge getragen, daß sich in dem Filterrohr selbst keine Falten bilden konnten.These well-known skeletal shapes make it possible to clean the filter, by after shortening the filter as a result of an on the coil spring or springs acting compression pressure these are suddenly relaxed, whereby the filter sleeves be shaken so that the material adhering to them falls off. With these known filters, however, was not taken to ensure that it is in the filter tube could not form wrinkles themselves.
Der Erfindung liegt die Aufgabe zugrunde, ein Filter zu schaffen, welches zur Nachbehandlung in frischem Beton verbleibt und eine Filtration über eine große Länge ermöglicht.The invention is based on the object of creating a filter which remains in fresh concrete for post-treatment and a filtration over allows a great length.
Die schlauchförmige Einlage gemäß der Erfindung ist dadurch gekennzeichnet, daß diese im Beton verbleibende Einlage in an sich bekannter Weise eine von geflochtenen Textilfasern umgebene Federspirale aufweist, die jedoch unter axialer Druckspannung steht und infolge ihrer Reaktionswirkung die Hülse aus geflochtenen Textilfasern faltenfrei spannt.The tubular insert according to the invention is characterized in that that this deposit remaining in the concrete in a manner known per se is one of braided Has spring coil surrounded by textile fibers, but under axial compressive stress stands and due to their reaction effect the sleeve made of braided textile fibers Wrinkle-free tensioned.
Die Vermeidung von größeren Falten, selbst dann, wenn das Filter stärkeren Richtungswechseln unterliegt, wird durch das »Unterspannungsetzen« der Hülse durch die komprimierte Schraubenfeder vermieden und weiterhin durch die Ausbildung dieser Hülse als Geflecht und nicht als Gewebe, wodurch eine große Variation der Länge der Hülse und eine relativ große, wirksame Filterfläche erzielt wird.Avoiding larger wrinkles, even if the filter is stronger Subject to change of direction, is carried out by "putting under tension" the sleeve the compressed coil spring avoided and continued through the formation of this Sleeve as a braid rather than a woven fabric, creating a large variation in length the sleeve and a relatively large, effective filter area is achieved.
Die Zeichnung zeigt schematisch eine Ausführungsform der erfindungsgemäßen Hülse, wobei ein Teil der Außenhülle nicht dargestellt ist.The drawing shows schematically an embodiment of the invention Sleeve, part of the outer shell not being shown.
Die in der Zeichnung dargestellte poröse, nachgiebige Hülse 2 besteht im wesentlichen aus einem geflochtenen rohrförinigen Körper, der unter Spannung eine Federspirale 3 umschließt. Die Feder ist leicht zusammengedrückt, so daß durch ihre Reaktionswirkung der geflochtene Rohrkörper zwischen ihren Windungen gespannt wird. Sie stellt also ein nachgiebiges Skelett des Rohrkörpers dar, durch welches ein praktisch konstanter Querschnitt desselben auch dann aufrechterhalten wird, wenn die durch diese beiden Elemente gebildete Einlage Üach einer Kurve gekrümmt ist.The porous, flexible sleeve 2 shown in the drawing consists essentially of a braided tubular body which encloses a spring coil 3 under tension. The spring is slightly compressed, so that the braided tubular body is tensioned between its coils due to its reaction effect. It thus represents a flexible skeleton of the tubular body, through which a practically constant cross-section of the same is maintained even when the insert formed by these two elements is curved around a curve.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU1184688X | 1956-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1184688B true DE1184688B (en) | 1964-12-31 |
Family
ID=19734836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET13926A Pending DE1184688B (en) | 1956-08-04 | 1957-07-26 | Tubular insert intended for post-treatment of fresh concrete |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1184688B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0545346A1 (en) * | 1991-12-03 | 1993-06-09 | Technische Universität Dresden | Filter core for dewatering during the pressing of fresh concrete |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE472246C (en) * | 1929-02-22 | Ed Wilh Straus Scharina | Cylindrical or pyramidal bag filter with a spring-loaded wire frame | |
US2186440A (en) * | 1937-08-03 | 1940-01-09 | Motor Improvements Inc | Filtering unit and method of making the same |
FR986095A (en) * | 1949-03-03 | 1951-07-26 | Process for manufacturing reinforced flexible pipes, and pipes obtained by this method |
-
1957
- 1957-07-26 DE DET13926A patent/DE1184688B/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE472246C (en) * | 1929-02-22 | Ed Wilh Straus Scharina | Cylindrical or pyramidal bag filter with a spring-loaded wire frame | |
US2186440A (en) * | 1937-08-03 | 1940-01-09 | Motor Improvements Inc | Filtering unit and method of making the same |
FR986095A (en) * | 1949-03-03 | 1951-07-26 | Process for manufacturing reinforced flexible pipes, and pipes obtained by this method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0545346A1 (en) * | 1991-12-03 | 1993-06-09 | Technische Universität Dresden | Filter core for dewatering during the pressing of fresh concrete |
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