FR2547338A1 - LOST FORMWORK CONCRETE FORM - Google Patents
LOST FORMWORK CONCRETE FORM Download PDFInfo
- Publication number
- FR2547338A1 FR2547338A1 FR8309750A FR8309750A FR2547338A1 FR 2547338 A1 FR2547338 A1 FR 2547338A1 FR 8309750 A FR8309750 A FR 8309750A FR 8309750 A FR8309750 A FR 8309750A FR 2547338 A1 FR2547338 A1 FR 2547338A1
- Authority
- FR
- France
- Prior art keywords
- concrete
- formwork element
- lost formwork
- lost
- formwork
- 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.)
- Granted
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000004793 Polystyrene Substances 0.000 claims abstract description 5
- 229920002223 polystyrene Polymers 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011324 bead Substances 0.000 description 3
- 208000035992 Postmortem Changes Diseases 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8605—Walls made by casting, pouring, or tamping in situ made in permanent forms without spacers
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/049—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Laminated Bodies (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
L'ELEMENT DE COFFRAGE PERDU EST REALISE SOUS FORME D'UNE PLANCHE EN BETON ISOLANT LEGER RENFORCE MECANIQUEMENT PAR UNE ARMATURE DE PEAU SUR AU MOINS UNE DE SES FACES; LE BETON ISOLANT LEGER EST OBTENU A PARTIR D'UN MELANGE COMPRENANT UN LIANT HYDRAULIQUE, DES BILLES DE POLYSTYRENE ET DE L'EAU.THE LOST FORMWORK ELEMENT IS MADE IN THE FORM OF A LIGHT INSULATING CONCRETE BOARD MECHANICALLY REINFORCED BY A SKIN REINFORCEMENT ON AT LEAST ONE OF ITS FACES; LIGHTWEIGHT INSULATING CONCRETE IS OBTAINED FROM A MIXTURE INCLUDING A HYDRAULIC BINDER, POLYSTYRENE BALLS AND WATER.
Description
Element de coffrage perdu en forme de planche en béton.Formwork element lost in the form of a concrete plank.
La présente invention a pour objet un élément The subject of the present invention is an element
de coffrage perdu en forme de planche en béton. formwork lost in the form of a concrete plank.
Actuellement, les planches en bois sont toujours très largement utilisées pour les coffrages de béton Une fois le béton en place, ces planches sont Currently, wooden planks are still very widely used for concrete forms Once the concrete is in place, these planks are
démontées et nettoyées Pour éviter cette dernière opération, il est connu d'utiliser des coffrages perdus. dismantled and cleaned To avoid this last operation, it is known to use lost formwork.
Il a en particulier été envisagé dans la demande de brevet français n 78 11 587,déposée par le demandeur, d'utiliser des planches en béton, munies d'une armature en résille, pour former des coffrages perdus Toutefois, ces planches en béton connues peuvent difficilement être découpées et sciées sur chantier, ce qui constitue un It was in particular envisaged in the French patent application n 78 11 587, filed by the applicant, to use concrete planks, provided with a mesh reinforcement, to form lost formwork However, these known concrete planks can hardly be cut and sawn on site, which is a
handicap certain par rapport aux planches de bois tradi15 tionnelles. certain handicap compared to traditional wooden planks.
Aussi, la présente invention a-t-elle pour but de fournir une planche en béton pour coffrage qui conserve les avantages d'utilisation des planches en bois légèreté, possibilité de sciage sur chantier à la main 20 ou à la machine tout en présentant les caractéristiques nécessaires pour pouvoir avantageusement être laissée Also, the present invention aims to provide a concrete board for formwork which retains the advantages of using light wooden boards, possibility of sawing on site by hand 20 or by machine while presenting the characteristics necessary to be able to advantageously be left
en place après coulée du béton.in place after pouring the concrete.
Ce but est atteint du fait que, conformément à l'invention, la planche est réalisée en béton isolant léger renforcé mécaniquement par une armature de peau sur This object is achieved because, in accordance with the invention, the board is made of light insulating concrete mechanically reinforced by a skin reinforcement on
au moins une de ses faces.at least one of its faces.
L'utilisation du béton isolant léger permet effectivement d'obtenir un produit léger pouvant être facilement découpé aux dimensions voulues En outre, 30 utilisé comme coffrage perdu, il permet, d'une part, d'économiser le temps et la main d'oeuvre nécessaires au démontage et au nettoyage des coffrages et, d'autre part, contribue à l'isolation thermique des parois De plus encore, l'on retrouve dans l'application comme The use of light insulating concrete effectively makes it possible to obtain a light product which can be easily cut to the desired dimensions. In addition, used as a lost formwork, it saves, on the one hand, time and labor. necessary for dismantling and cleaning the formwork and, on the other hand, contributes to the thermal insulation of the walls Furthermore, we find in the application as
coffrage perdu les qualités de durabilité et d'ininflam- formwork lost the qualities of durability and inflammability
mabilité du béton isolant léger, et l'on dispose d'un produit qui est compatible avec le béton coulé in-situ et qui permet un bon accrochage des enduits plastiques light insulating concrete, and there is a product which is compatible with concrete poured in situ and which allows good adhesion of plastic coatings
ou traditionnels.or traditional.
Le béton isolant léger est réalisé à partir d'un mélange de liant% hydrauliques, billes de polystyrène et eau L'adhérence entre les billes de polystyrène et la pâte est améliorée par l'utilisation d'adjuvants à base de protéines d'origine animale Dans une 10 réalisation préférée, l'adjuvant utilisé est du cruor atomisé à raison de 1 % du poids de liant Le cruor peut être remplacé par du sang liquide stabilisé par voie bactérienne, le dosage étant alors d'environ 5 % du The light insulating concrete is made from a mixture of% hydraulic binder, polystyrene beads and water. The adhesion between the polystyrene beads and the paste is improved by the use of protein-based adjuvants of animal origin. In a preferred embodiment, the adjuvant used is atomized cruor at a rate of 1% of the weight of binder. The cruor can be replaced by liquid blood stabilized by bacterial route, the dosage then being approximately 5% of the
poids de liant hydraulique.weight of hydraulic binder.
Les planches sont fabriquées aux dimensions voulues par compression, vibration ou autre procédé connu The boards are made to the desired dimensions by compression, vibration or other known process
tel que laminage, filage ou extrusion par exemple. such as rolling, spinning or extrusion for example.
De préférence, l'épaisseur des planches est au moins égale à 3 cm et peut aller jusqu'à 10 cm, une épais20 seur type étant d'environ 5 cm et la largeur est au moins égale à 10 cm et peut aller jusqu'a un maximum de lm, une largeur type étant d'environ 20 cm La longueur des Preferably, the thickness of the boards is at least equal to 3 cm and can go up to 10 cm, a typical thickness being about 5 cm and the width is at least equal to 10 cm and can go up to a maximum of lm, a typical width being about 20 cm The length of the
planches est déterminée en fonction des besoins. boards is determined as needed.
Le produit obtenu est particulièrement léger. 25 En fonction des quantités respectives de liant et de billes de polystyrène, la masse volumique peut varier The product obtained is particularly light. 25 Depending on the respective amounts of binder and polystyrene beads, the density may vary
3 3 33 3 3
entre 300 kg/m 3 et 800 kg/m 3 voire 1 000 kg/m Le renforcement mécanique des planches est réalisé au moyen d'un revêtement de peau disposé sur 30 une des faces ou sur les deux Ce revêtement de peau est par exemple réalisé sous forme d'un treillis en fibres minérales (verre) ou végétales (lin) mis en place dans une barbotine de ciment ou liants hydrauliques Malgré cette armature de peau et, d'autre part, 35 en raison de la nature du béton utilisé et de l'absence d'armature interne, la découpe peut facilement être -3 between 300 kg / m 3 and 800 kg / m 3 or even 1000 kg / m The mechanical reinforcement of the boards is carried out by means of a skin covering placed on one or both sides This skin covering is for example produced in the form of a trellis of mineral fibers (glass) or vegetable fibers (flax) placed in a cement slip or hydraulic binders Despite this skin reinforcement and, on the other hand, 35 due to the nature of the concrete used and the absence of internal reinforcement, the cut can easily be -3
effectuée sur chantier par sciage à la main. carried out on site by sawing by hand.
Les planches fabriquées comme indiqué ci-dessus The boards manufactured as indicated above
présentent des propriétés mécaniques largement suffisantes pour I'application envisagée. have mechanical properties largely sufficient for the intended application.
A titre indicatif, une résistance à la compression supérieure à 1 M Pa ( 10 bars) et une résistance en traction par flexion supérieure à 3 I Pa ( 30 bars) (avec armatures As an indication, a compressive strength greater than 1 M Pa (10 bars) and a tensile strength by bending greater than 3 I Pa (30 bars) (with reinforcement
depeau sur les deux faces) peuyent aisément être atteintes. skin on both sides) can easily be reached.
Bien entendu, diverses modifications ou adjonc10 tions pourront être apportées au mode de réalisation décrit plus haut d'un élément de coffrage perdu selon Of course, various modifications or additions can be made to the embodiment described above of a formwork element lost according to
l'invention sans pour cela sortir de la protection définie par les revendications annexées. the invention without thereby departing from the protection defined by the appended claims.
Claims (4)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8309750A FR2547338B1 (en) | 1983-06-13 | 1983-06-13 | LOST FORMWORK CONCRETE FORM |
| EP84401179A EP0128832A3 (en) | 1983-06-13 | 1984-06-07 | Permanent shuttering element in the form of a concrete board |
| ES533334A ES533334A0 (en) | 1983-06-13 | 1984-06-12 | MANUFACTURING PROCEDURE OF A LOST FORMWORK ELEMENT IN SHEET FORM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8309750A FR2547338B1 (en) | 1983-06-13 | 1983-06-13 | LOST FORMWORK CONCRETE FORM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2547338A1 true FR2547338A1 (en) | 1984-12-14 |
| FR2547338B1 FR2547338B1 (en) | 1986-05-30 |
Family
ID=9289726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8309750A Expired FR2547338B1 (en) | 1983-06-13 | 1983-06-13 | LOST FORMWORK CONCRETE FORM |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0128832A3 (en) |
| ES (1) | ES533334A0 (en) |
| FR (1) | FR2547338B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT397399B (en) * | 1989-08-17 | 1994-03-25 | Stracke Ing Markus | CONSTRUCTION PART |
| WO2007061276A1 (en) * | 2005-11-23 | 2007-05-31 | Muros R De Mexio, Sociedad De Responsabilidad Limitada De Capital Variable | Modular construction system for the construction of reinforced concrete walls, using lightweight concrete permanent formwork |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1125726A (en) * | 1954-06-04 | 1956-11-06 | Siporex Int Ab | Process for the production of so-called elements |
| CH442677A (en) * | 1966-06-29 | 1967-08-31 | Allmen Marc Von | Method of constructing a building using prefabricated elements and building obtained by this process |
| FR1513329A (en) * | 1966-10-17 | 1968-02-16 | Construction process for a load-bearing, waterproof, isothermal and isophone wall | |
| DE1559585A1 (en) * | 1964-08-17 | 1970-03-05 | Kruschandl Edward Victor | Formwork element for the production of concrete walls and method for erecting buildings using such formwork elements |
-
1983
- 1983-06-13 FR FR8309750A patent/FR2547338B1/en not_active Expired
-
1984
- 1984-06-07 EP EP84401179A patent/EP0128832A3/en not_active Withdrawn
- 1984-06-12 ES ES533334A patent/ES533334A0/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1125726A (en) * | 1954-06-04 | 1956-11-06 | Siporex Int Ab | Process for the production of so-called elements |
| DE1559585A1 (en) * | 1964-08-17 | 1970-03-05 | Kruschandl Edward Victor | Formwork element for the production of concrete walls and method for erecting buildings using such formwork elements |
| CH442677A (en) * | 1966-06-29 | 1967-08-31 | Allmen Marc Von | Method of constructing a building using prefabricated elements and building obtained by this process |
| FR1513329A (en) * | 1966-10-17 | 1968-02-16 | Construction process for a load-bearing, waterproof, isothermal and isophone wall |
Also Published As
| Publication number | Publication date |
|---|---|
| ES8600449A1 (en) | 1985-09-16 |
| EP0128832A3 (en) | 1985-08-21 |
| ES533334A0 (en) | 1985-09-16 |
| FR2547338B1 (en) | 1986-05-30 |
| EP0128832A2 (en) | 1984-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |