EP0650812A1 - Verfahren zur Herstellung von vorgefertigten Raumzellen oder ähnlichen Gegenständen aus Stahlbeton und durch das Verfahren hergestellte Formkörper - Google Patents

Verfahren zur Herstellung von vorgefertigten Raumzellen oder ähnlichen Gegenständen aus Stahlbeton und durch das Verfahren hergestellte Formkörper Download PDF

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Publication number
EP0650812A1
EP0650812A1 EP94830503A EP94830503A EP0650812A1 EP 0650812 A1 EP0650812 A1 EP 0650812A1 EP 94830503 A EP94830503 A EP 94830503A EP 94830503 A EP94830503 A EP 94830503A EP 0650812 A1 EP0650812 A1 EP 0650812A1
Authority
EP
European Patent Office
Prior art keywords
manufactured article
fact
strong structure
reinforced concrete
manufactured
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.)
Withdrawn
Application number
EP94830503A
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English (en)
French (fr)
Inventor
Giuseppe Zanetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COSTRUZIONI E RICERCHE S.R.L.
Original Assignee
COSTRUZIONI E RICERCHE SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by COSTRUZIONI E RICERCHE SpA filed Critical COSTRUZIONI E RICERCHE SpA
Publication of EP0650812A1 publication Critical patent/EP0650812A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes

Definitions

  • the present invention relates to a process for carrying out box-like prefabricated reinforced concrete manufactured articles and manufactured article produced thereby, particularly, for forming beams, bent tiles for covering attics, elements for bridges and for galleries, etc..
  • a first constructive method provides the making of a concrete casting in a form having a metal inner form that is taken away from the top after the setting of the same casting. Then, the final casting is carried out to form a slab closing the box-like manufactured article.
  • Another constructive method provides the insertion of a disposable inner form made of polystyrene or other light material.
  • this constructive method shows different disadvantages.
  • polystyrene members are particularly expensive, it is not possible to get rid of their residuals and in case of fire the polystyrene expands therefore causing dangerous stresses in the structure.
  • Moroever the polystyrene crumbles rather easily, so that small polystyrene pieces enter the concrete casting impairing the strength.
  • Another very important disadvantage is due to the fact it is very difficult to hold the polystyrene inner form since during the forming of the casting, the inner form receives a thrust equal to the weight of the concrete displaced.
  • a third method for forming manufacturing articles is an extrusion processing that allows to produce finished elements, however, this method can be used for carrying out small size manufactured articles (generally having an height of 30-40 cm) but very heavy.
  • a fourth method provides the use of a metal inner stiff inner form, that after the forming of the casting it shrinks so it can be taken away.
  • the most troublesome is the difficulty of securely holding the pipings during the forming of the concrete casting.
  • the pipes are subjected to a strong thrust directed to the top that is equal to the weight of the displaced concrete.
  • Another object of the present invention is to avoid, thanks to this method, noxious pollutants contrary to the prior art that was not able to get rid of the polystyrene.
  • Another object of the present invention is to obtain manufactured articles having different geometrical and static features without the necessity to change the forms structure.
  • the present method allows to insure a correct positioning of the inner forms during the casting forming contrary to the prior art.
  • a further object of the present invention is to carry out a manufactured article having improved structural characteristics with an increased strength ability to withdraw stresses.
  • a still further object of the present invention is to build such manufactured articles having limited plant and equipment costs, reduced storing rooms, shorter manufacturing times and high flexibility of use.
  • numeral 1 generally shows a box-like manufactured article produced according to the process of the present invention.
  • the manufactured article is basically formed by a first bed plate-like element 2 suitably reinforced in a substantially known way and anyhow according to the strength characteristics required by its final use, at least one suitably reinforced rib which raises from the bed element 2 and a second covering plate-like element 4 which is also suitably reinforced.
  • the manufactured article 1 of the embodied described example shown in figure 1, is provided with vertical ribs 3a, 3b and 3c.
  • the manufactured article 1 comprises a inner form element 5 which is substantially formed by a strong structure 5a having a preestablished shape according to the shape of the manufacturing article to be obtained.
  • the inner form element 5 is not a disposable element or an element to be reused for other manufactured articles, as it usually happens in the prior art, because it cooperates with the structure of the manufactured article and it is an integral part of it.
  • the strong structure 5a is formed by an electro-welded lathing that can be galvanized or coated with epoxy resin to improve the strength characteristics also in particularly corrosive environments.
  • the strong structure 5a can be made by metal or plastic elements which are suitably shaped and connected together.
  • the membrane 6 covering the same structure in order to make the structure waterproof.
  • the membrane 6 is made of a thermoretractable material in order to better adhere to the strong structure and to act as a barrier for the concrete during the casting, behaving as a baffle to keep out and to protect from the external agents, e.g. steam.
  • other several kinds of material can be used for carrying out the membrane 6, such metal sheet, rubber, aluminium, and like.
  • the strong structure 5a shows an outer surface that is compact enough, it is possible to avoid the covering membrane 6 (for example when the electro-welded lathing has very dense meshes or when the structure is formed by plates).
  • the strong structure 5a shows a plurality of elements 10a, 1ob and 10c anchoring the same structure, this elements are fixed to the plate-like element 2, the ribs 3a, 3b and 3c and the second plate-like element 4 respectively.
  • the inner form element 5 is equipped with a plurality of crosspieces 7 provided for strengthening the strong structure 5a and also the manufactured article in case it is necessary.
  • the crosspieces 7 shows anchoring element 7a which are embedded in the concrete of the bed element 2, of the ribs 3a, 3b and 3c and of the covering element.
  • the manufactured article 1 is provided with plates and/or attaching means 9 for transporting and storing the same manufactured article.
  • the present process provides a plurality of steps, some of these steps are substantially known, such as the arrangement of a form by cleaning and coating it with oil for the following dismantling, the placing of a plurality of strands for prestressing and tensioning the same and the placing of a metal reinforcement which is necessary for the bed element forming the lower slab of the manufactured article.
  • the following steps of process provide the arrangement of a metal reinforcement for the ribs, the concrete casting and a corresponding vibration for obtaining the bed element, as illustrated in figure 2.
  • the process provides the arrangement of the inner form elements which are anchored to the bed element by dipping the lower anchoring elements in the green concrete mass. As the time goes by, it is obtained the hardening of the concrete and the total consequent blocking of the inner form element as shown in figure 3.
  • a very important step is the arrangement of the inner form elements which are prepared every time depending on the characteristics of the manufactured article to carry out.
  • the arrangement step of the inner form elements comprises a step of preparing the strong structure by, for example, the bending of the electro-welded lathing depending on the shaping of the manufactured article to obtain.
  • the structure, obtained in this way is stiffened by adding crosspieces which are welded to the same lathing and the anchoring elements are arranged.
  • the strong structure is coated by the membrane which is heated to adhere to the electro-welded lathing making the inner form element waterproof.
  • the present invention avoid the necessity of having the several forms, the room necessary for stacking them and the cost for their preparation.
  • the invention can be used to change the number of ribs present in the manufactured article besides the presence of cross ribs having also different heights for producing manufactured articles having a certain slope since it is sufficient to insert many inner form elements suitably shaped.
  • the inner mold element partially absorbs the stress caused by moving the manufactured article in the factory and during the storing and transport.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
EP94830503A 1993-10-29 1994-10-27 Verfahren zur Herstellung von vorgefertigten Raumzellen oder ähnlichen Gegenständen aus Stahlbeton und durch das Verfahren hergestellte Formkörper Withdrawn EP0650812A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMN930022 1993-10-29
IT93MN000022A IT1267079B1 (it) 1993-10-29 1993-10-29 Procedimento per la realizzazione di manufatti prefabbricati in c.a. e relativo manufatto ottenuto

Publications (1)

Publication Number Publication Date
EP0650812A1 true EP0650812A1 (de) 1995-05-03

Family

ID=11384425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94830503A Withdrawn EP0650812A1 (de) 1993-10-29 1994-10-27 Verfahren zur Herstellung von vorgefertigten Raumzellen oder ähnlichen Gegenständen aus Stahlbeton und durch das Verfahren hergestellte Formkörper

Country Status (2)

Country Link
EP (1) EP0650812A1 (de)
IT (1) IT1267079B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011151475A1 (es) * 2010-05-31 2011-12-08 Medran Lopez Francisco Procedimiento de fabricación de módulos compactos para la construcción

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1811186A1 (de) * 1968-11-27 1970-06-11 Hugo Schmidt Schalvorrichtung zur Herstellung in sich geschlossener Raumfertigteile aus Stahlbeton in einem Guss in variablen Groessen fuer Wohnraumbauten
FR2022380A1 (de) * 1968-11-01 1970-07-31 Robinson Building Techn
US4372906A (en) * 1978-09-14 1983-02-08 Master Modular Homes, Inc. Method and apparatus for pre-casting steel reinforced concrete box-like modules
DE3436690A1 (de) * 1983-11-10 1985-05-23 Carl, Heinz, Ing.(grad.), 8644 Pressig Schalung fuer fundamentteile
DE8709148U1 (de) * 1987-07-02 1987-11-26 Hiendl, Heribert, 94315 Straubing Schalungselement
EP0299226A2 (de) * 1987-07-17 1989-01-18 Peca-Verbundtechnik Gmbh Schalung zum Herstellen von Betonbauteilen
FR2673437A1 (fr) * 1991-02-28 1992-09-04 Varenne Bernard Philippe Procede de fabrication d'un caveau funeraire en beton.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2022380A1 (de) * 1968-11-01 1970-07-31 Robinson Building Techn
DE1811186A1 (de) * 1968-11-27 1970-06-11 Hugo Schmidt Schalvorrichtung zur Herstellung in sich geschlossener Raumfertigteile aus Stahlbeton in einem Guss in variablen Groessen fuer Wohnraumbauten
US4372906A (en) * 1978-09-14 1983-02-08 Master Modular Homes, Inc. Method and apparatus for pre-casting steel reinforced concrete box-like modules
DE3436690A1 (de) * 1983-11-10 1985-05-23 Carl, Heinz, Ing.(grad.), 8644 Pressig Schalung fuer fundamentteile
DE8709148U1 (de) * 1987-07-02 1987-11-26 Hiendl, Heribert, 94315 Straubing Schalungselement
EP0299226A2 (de) * 1987-07-17 1989-01-18 Peca-Verbundtechnik Gmbh Schalung zum Herstellen von Betonbauteilen
FR2673437A1 (fr) * 1991-02-28 1992-09-04 Varenne Bernard Philippe Procede de fabrication d'un caveau funeraire en beton.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8834754B2 (en) 2010-05-30 2014-09-16 Francisco Medran-Lopez Manufacturing process of compact monolithic prismatic modules for construction
WO2011151475A1 (es) * 2010-05-31 2011-12-08 Medran Lopez Francisco Procedimiento de fabricación de módulos compactos para la construcción
CN103097621A (zh) * 2010-05-31 2013-05-08 弗朗西斯科·梅德拉-罗皮兹 建筑用紧凑型模块的制作方法
CN103097621B (zh) * 2010-05-31 2015-04-29 弗朗西斯科·梅德拉-罗皮兹 建筑用紧凑型模块的制作方法
EA023316B1 (ru) * 2010-05-31 2016-05-31 Франсиско Медран Лопес Способ изготовления компактных строительных модулей

Also Published As

Publication number Publication date
IT1267079B1 (it) 1997-01-24
ITMN930022A1 (it) 1995-04-29
ITMN930022A0 (it) 1993-10-29

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