DE202010005185U1 - Spacers for formwork - Google Patents
Spacers for formwork Download PDFInfo
- Publication number
- DE202010005185U1 DE202010005185U1 DE201020005185 DE202010005185U DE202010005185U1 DE 202010005185 U1 DE202010005185 U1 DE 202010005185U1 DE 201020005185 DE201020005185 DE 201020005185 DE 202010005185 U DE202010005185 U DE 202010005185U DE 202010005185 U1 DE202010005185 U1 DE 202010005185U1
- Authority
- DE
- Germany
- Prior art keywords
- spacer
- concrete
- formwork
- admixture
- crystal
- 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.)
- Expired - Lifetime
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/075—Tying means, the tensional elements of which are fastened or tensioned by other means
- E04G17/0755—Tying means, the tensional elements of which are fastened or tensioned by other means the element consisting of several parts
- E04G17/0758—Tying means, the tensional elements of which are fastened or tensioned by other means the element consisting of several parts remaining completely or partially embedded in the cast material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Abstandhalter für Schalungswandelemente, zur Anordnung in einem Schalungshohlraum, dadurch gekennzeichnet, daß der Abstandhalter (12) mit wenigstens einem unter Wasser- oder Feuchtigkeitseinwirkung kristallbildenden Betonzusatzmittel ausgestattet ist.Spacer for formwork wall elements, for arrangement in a formwork cavity, characterized in that the spacer (12) is equipped with at least one concrete additive which forms crystals under the influence of water or moisture.
Description
Die Erfindung betrifft einen Abstandhalter für Schalungswandelemente, zur Anordnung in einem Schalungshohlraum.The invention relates to a spacer for formwork wall elements, for arrangement in a formwork cavity.
Derartige Abstandhalter sind bekannt und werden beispielsweise auch als Distanzrohre bezeichnet. Sie dienen beispielsweise zur Sicherung von Schalungen, indem Ankerstäbe durch den Abstandhalter hindurch quer durch den Schalungsquerschnitt geführt werden, mit denen gegenüberliegende Schalungswandelemente miteinander verspannt werden.Such spacers are known and are for example also referred to as spacer tubes. They serve, for example, to secure formwork by anchor rods are guided through the spacer transversely through the formwork cross-section, with which opposite shuttering wall elements are clamped together.
Es sind Abstandhalter bekannt, die aus Faserbeton hergestellt sind. Dadurch ergibt sich ein guter Verbund zwischen dem Abstandhalter und dem ummantelndem Beton.There are known spacers made of fiber concrete. This results in a good bond between the spacer and the sheathing concrete.
Aufgabe der Erfindung ist es, einen Abstandhalter der eingangs genannten Art zu schaffen, mit dem eine qualitativ besonders hochwertige Betonierung erzielt werden kann.The object of the invention is to provide a spacer of the type mentioned, with a high quality concrete concreting can be achieved.
Diese Aufgabe wird erfindungsgemäß durch einen Abstandhalter für Schalungswandelemente, zur Anordnung in einem Schalungshohlraum gelöst, bei dem der Abstandhalter mit wenigstens einem unter Wasser- oder Feuchtigkeitseinwirkung kristallbildenden Betonzusatzmittel ausgestattet ist.This object is achieved by a spacer for formwork wall elements, for arrangement in a formwork cavity, in which the spacer is equipped with at least one under water or moisture crystal-forming concrete admixture.
Wenn sich im Betonbauteil in der Umgebung des Abstandhalters feine Kapillarrisse oder Kapillarporen bilden, so können diese durch das beispielsweise vom Abstandhalter in den umgebenden Beton transportierte Betonzusatzmittel durch Bildung von Kristallen verschlossen werden. Das kristallbildende Betonzusatzmittel kann somit die Wasserundurchlässigkeit eines Betonbauteils steigern. Dies ist insbesondere im Bereich unterhalb eines Abstandhalters vorteilhaft, wenn hier aufgrund der begrenzten Fließfähigkeit des Frischbetons der Beton nicht einheitlich verdichtet wird.If fine capillary cracks or capillary pores form in the concrete component in the vicinity of the spacer, they can be closed by the formation of crystals, for example, by the concrete admixture, for example transported by the spacer into the surrounding concrete. The crystallizing concrete admixture can thus increase the water impermeability of a concrete component. This is particularly advantageous in the area below a spacer, if the concrete is not uniformly compacted here due to the limited flowability of the fresh concrete.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
Vorzugsweise ist der Abstandhalter im wesentlichen aus einem Beton gefertigt. Dies verbessert den Verbund zum umgebenden Beton.Preferably, the spacer is essentially made of a concrete. This improves the bond to the surrounding concrete.
Vorzugsweise ist der Abstandhalter zumindest im noch nicht mit Frischbeton vergossenen Zustand mit dem Zusatzmittel ausgestattet. Das heißt, der Abstandhalter ist zumindest in noch nicht im Schalungshohlraum mit Beton vergossenem Zustand, beispielsweise im Lieferzustand, bereits mit dem Zusatzmittel ausgestattet.Preferably, the spacer is equipped at least in not yet poured with fresh concrete condition with the additive. That is, the spacer is at least not yet in the formwork cavity with concrete potted state, for example, in the delivery condition, already equipped with the additive.
Ein bevorzugtes Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung näher erläutert.A preferred embodiment of the invention will be explained in more detail below with reference to the drawing.
Es zeigen:Show it:
Die in
Zwischen den Schalungswänden
Der quer zu den Schalungswänden
Der Abstandhalter
Beispielsweise kann das wenigstens eine kristallbildende Betonzusatzmittel dem Beton des Abstandhalters beigefügt sein. Unter Feuchtigkeitseinwirkung kann das Betonzusatzmittel beispielsweise aus dem Abstandhalter ausgelaugt oder ausgewaschen werden und beispielsweise in einem Kapillarriss im umgebenden Beton kristallisieren.For example, the at least one crystal-forming concrete admixture may be added to the concrete of the spacer. Under the action of moisture, the concrete admixture can be leached or washed out of the spacer, for example, and crystallized, for example, in a capillary crack in the surrounding concrete.
Beispielsweise kann das wenigstens eine kristallbildende Betonzusatzmittel zumindest an der Außenseite des Abstandhalters angeordnet sein. Beispielsweise kann alternativ oder zusätzlich zur Beifügung des Betonzusatzmittels in den Beton des Abstandhalters der Abstandhalter auf seiner Außenseite eine Schicht
In
Der Verbund zum umgebenden Beton kann zusätzlich dadurch verbessert werden, dass der Abstandhalter
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201020005185 DE202010005185U1 (en) | 2010-04-13 | 2010-04-13 | Spacers for formwork |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201020005185 DE202010005185U1 (en) | 2010-04-13 | 2010-04-13 | Spacers for formwork |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202010005185U1 true DE202010005185U1 (en) | 2011-08-30 |
Family
ID=44730962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201020005185 Expired - Lifetime DE202010005185U1 (en) | 2010-04-13 | 2010-04-13 | Spacers for formwork |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202010005185U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018102333U1 (en) | 2018-04-25 | 2019-07-26 | Sven Obernolte | Device for sealing concrete joints |
US20200123793A1 (en) * | 2017-01-27 | 2020-04-23 | Meva Schalungs-Systeme Gmbh | Seal for a lead-through for a tie rod through a panel formwork element |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4398959A (en) * | 1981-04-15 | 1983-08-16 | W. R. Grace & Co. | Mortar topping with calcium nitrite |
DE8805715U1 (en) * | 1988-04-30 | 1988-06-30 | Max Frank Gmbh & Co Kg, 8448 Leiblfing, De | |
US5427819A (en) * | 1992-11-13 | 1995-06-27 | Virginia Tech Intellectual Properties, Inc. | Corrosion inhibiting repair and rehabilitation treatment process for reinforced concrete structures |
-
2010
- 2010-04-13 DE DE201020005185 patent/DE202010005185U1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4398959A (en) * | 1981-04-15 | 1983-08-16 | W. R. Grace & Co. | Mortar topping with calcium nitrite |
DE8805715U1 (en) * | 1988-04-30 | 1988-06-30 | Max Frank Gmbh & Co Kg, 8448 Leiblfing, De | |
US5427819A (en) * | 1992-11-13 | 1995-06-27 | Virginia Tech Intellectual Properties, Inc. | Corrosion inhibiting repair and rehabilitation treatment process for reinforced concrete structures |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200123793A1 (en) * | 2017-01-27 | 2020-04-23 | Meva Schalungs-Systeme Gmbh | Seal for a lead-through for a tie rod through a panel formwork element |
US11047143B2 (en) * | 2017-01-27 | 2021-06-29 | Meva Schalungs-Systeme Gmbh | Seal for a lead-through for a tie rod through a panel formwork element |
DE202018102333U1 (en) | 2018-04-25 | 2019-07-26 | Sven Obernolte | Device for sealing concrete joints |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R163 | Identified publications notified | ||
R207 | Utility model specification |
Effective date: 20111020 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years | ||
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20130617 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years | ||
R152 | Utility model maintained after payment of third maintenance fee after eight years | ||
R071 | Expiry of right |