US3631643A - Method and device for the manufacture of concrete building elements - Google Patents

Method and device for the manufacture of concrete building elements Download PDF

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Publication number
US3631643A
US3631643A US861783A US3631643DA US3631643A US 3631643 A US3631643 A US 3631643A US 861783 A US861783 A US 861783A US 3631643D A US3631643D A US 3631643DA US 3631643 A US3631643 A US 3631643A
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United States
Prior art keywords
wedges
slab
building elements
concrete
concrete building
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Expired - Lifetime
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US861783A
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English (en)
Inventor
Per Olof Jonell
Sven Melker Nilsson
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INGENIORSFIRMAN NILCON AB
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Nilcon Ab Ing Firman
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Publication date
Application filed by Nilcon Ab Ing Firman filed Critical Nilcon Ab Ing Firman
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/08—Load-carrying floor structures formed substantially of prefabricated units assembled of block-shaped elements, e.g. hollow stones

Definitions

  • the invention relates to building structures in which slabs are laid on beams, and in which it is desired to maintain the slabs coplanar irrespective of difference in level of the beams and slabs.
  • the invention provides rubber wedges. used in pairs so as to be adjustable to different thicknesses, located between the slabs and beams at intervals and held in place by adhesive.
  • Composite building elements with exactly the same thickness can be produced by this method, even if the individual elements have been given different thickness during casting.
  • one disadvantage of this method is that because of the relative hardness of the cast material the sound insulation is not as effective as might be desired, and also it is not possible to supply air between the adjacent building elements.
  • the object of the present invention is to overcome these disadvantages.
  • support wedges made of flexible material and cooperating in pairs, so that the inclined surfaces of the wedges face each other and the total thickness of the wedges can be changed by relative axial movement thereof.
  • wedges are of such material and dimensions that under an increase in load on the slab by for instance 50 kg. they are compressed by about 0.2-0.5 mm.
  • Neoprene rubber or a similar isotropic synthetic rubber material is used for making the wedges, the danger of cold flow under high loads on the slab, such as often occurs when foamed materials are used for soundproofing, does not arise.
  • FIG. 1 is a vertical section through a joint between two adjacent building elements in accordance with the invention
  • FIG. 2 is a vertical section on the line IlII of FIG. 1, showing a building element during the assembly of its various parts,
  • FIG. 3 is a similar section, with the slab lowered into its correct position on the corresponding support wedges,
  • FIG. 4 shows two cooperating wedges in perspective
  • FIG. 5 shows in perspective wedges according to a variation of the invention.
  • the concrete building element shown in the drawings consists of a concrete coffer l strengthened by reinforcing bars (not shown) and a superimposed flat concrete slab 2, also strengthened by reinforcing bars (not shown).
  • sound insulation 4 which will be described in more detail below.
  • the cavity 5 in the coffer 1 contains a layer 6 of mineral wool or like heatand sound-insulating material.
  • the concrete coffer 1 is supported at its ends by beams 7.
  • each building element has the same thickness and they can be produced in a factory without necessitating any levelling off at the building site, since no differences of level would occur.
  • a support 11 on which the concrete coffer l is lowered so that its ends 12 rest on this support.
  • a support 11 On which the concrete coffer l is lowered so that its ends 12 rest on this support.
  • vertically adjustable and clampable stop means 13 Above the support 11 are disposed vertically adjustable and clampable stop means 13.
  • wedges 16, 17 made of Neoprene or similarly flexible isotropic material, superimposed in pairs and placed in the gap at intervals on the top surface 15 of the concrete coffer 1.
  • the wedges 16, 17 are shaped with their side faces of generally parallel trapezoidal shape, with an oblique surface 18, 19; these latter faces are opposite each other when the wedges are assembled, and their inclination is such that the flat side 20 of wedge 16 which is nearest the concrete coffer edge 15 runs parallel to the flat side 21 adjacent the slab 2.
  • the one wedge 16 is provided with a longitudinal rib 22 on its inclined surface 18, and the wedge 17 has a corresponding longitudinal groove 23 along its inclined surface 19, into which the rib 22 of wedge 16 can fit.
  • the inclined surfaces l8, 19' of the wedges 16', 17' are each provided with transverse ridges 24 which interengage when the wedges are superimposed.
  • the wedges in the embodiment shown in FIG. 4 can also be provided with corresponded cross ridging.
  • the wedges 16, 17 are held in their set position by the rib and groove joint 22, 23 and the grooves 24.
  • the concrete coffer l is lowered on to the support 11 (FIG. 2) and a concrete slab 2 is laid loosely on the coffer, whereupon the suction discs 14 are lowered into contact with the upper side of slab 2.
  • a predetermined suction is now applied to the interior of the suction discs, whereafter these are lifted, taking the slab 2 with them, until the latter meets the stop means 13.
  • the stop means 13 should be set to a height B above the support I l which exceeds by a certain amount, e.g., 30 mm., the total thickness A of the finished building element. Height B consequently is 330 mm.
  • Another method of assembling building elements is to raise the slab 2 to the correct height in the manner given above, to feed the wedges 16, 17, provided with an adhesive, into the gap 3 and then to displace the wedges in each pair by a tool, in a direction relative to each other so that they are pressed together, with the lower wedge 16 pressed against the top of the cofi'er-shaped part I and the upper wedge 17 against the underside of slab 2.
  • the number of pairs of wedges, their mutual spacing, the choice of material and the dimensions of the wedges should be such that under an increase in load on the slab by, e.g., 50 kg./m. all the pairs of wedges undergo a compression of about 0.2-0.5 mm.
  • an airstream l.g., a hot airstream
  • a hot airstream through the gap between the concrete coffer l and the slab 2 of all the building elements assembled into a support layer.
  • the mutual axial displacement of wedges 16, 17 can advantageously be effected by a tonglike tool so shaped that when both limbs are inserted into the gap 3 between the concrete coffer 1 and the slab 2, with one limb lying against the upper edge of the cofi'er and the other against the slab 2, the two opposite limbs of this tool move the wedges 16, 17 axially towards or away from each other to the correct predetermined total thickness D, whereupon the wedges with this total thickness are inserted into the gap 3 and laid out at equal spacings on the upper surface 15 of the concrete coffer.
  • the embodiment shown and described is only to be considered as an example, and the various parts of the building element can be changed in a number of ways within the scope of the following claims.
  • the supporting coffershaped portion 1 may be given a different shape or material.
  • the wedges l6, 17 should be provided with a quick-setting adhesive both on their inclined surfaces 18, 19 and the parallel surfaces 20, 21, so that the pairs of wedges are firmly bonded both to the slab 2 and the concrete coffer 1 when the slab is lowered.
  • each element comprising:
  • wedges made of flexible isotropic synthetic rubber material which will resist cold flow between contiguous surfaces of said module and said slab, said wedges having frictionally roughened inclined surfaces facing each other and being dimensioned so that, under an increase in load of 50 kg./m. on the slab, they are compressed in the range of 0.2 to 0.5 mm., whereby the total thickness of the wedges is changed by relative axial movement thereof;

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Rod-Shaped Construction Members (AREA)
US861783A 1968-10-01 1969-09-29 Method and device for the manufacture of concrete building elements Expired - Lifetime US3631643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1322768 1968-10-01

Publications (1)

Publication Number Publication Date
US3631643A true US3631643A (en) 1972-01-04

Family

ID=20297056

Family Applications (1)

Application Number Title Priority Date Filing Date
US861783A Expired - Lifetime US3631643A (en) 1968-10-01 1969-09-29 Method and device for the manufacture of concrete building elements

Country Status (9)

Country Link
US (1) US3631643A (enrdf_load_stackoverflow)
CH (1) CH520841A (enrdf_load_stackoverflow)
DE (1) DE1946254A1 (enrdf_load_stackoverflow)
DK (1) DK119575B (enrdf_load_stackoverflow)
FI (1) FI48772C (enrdf_load_stackoverflow)
FR (1) FR2019602A1 (enrdf_load_stackoverflow)
GB (1) GB1267047A (enrdf_load_stackoverflow)
NL (1) NL6914373A (enrdf_load_stackoverflow)
NO (1) NO123149B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731965A (en) * 1987-02-19 1988-03-22 Jensen Brian A Adjustable shim
US5442882A (en) * 1994-04-20 1995-08-22 Repasky; John Universal slope compensator for use in constructing a flat surface
EP1528170A1 (en) * 2003-10-28 2005-05-04 Echo Floor system, prefabricated element and process for manufacturing the prefabricated element
US10724235B2 (en) * 2015-04-23 2020-07-28 Hughes General Contractors, Inc. Joint-free concrete

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926488B2 (de) * 1979-06-30 1981-06-11 Mainbau Estrich- und Fußboden GmbH, 8500 Nürnberg Höhenverstellbares Lager für die Abstützung eines aufgeständerten Bodens od.dgl.
US6018916A (en) * 1998-09-15 2000-02-01 Henry; Mark Door and window shim
GB2412930A (en) * 2004-04-08 2005-10-12 T D I Sound absorbent insulation for flooring
DK176854B1 (da) 2007-08-16 2009-12-14 Junckers Ind As F Kilesæt, især til brug ved opklodsning af gulvströer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR662205A (fr) * 1927-10-14 1929-08-05 Ig Farbenindustrie Ag Procédé d'impression de laine avec des sels éthérifiés de composés leuco de colorants pour cuve
FR43505E (fr) * 1933-05-18 1934-06-23 Perfectionnements appliqués à la fabrication et pose des parquets
GB544382A (en) * 1941-01-13 1942-04-10 Harry Mason Improvements relating to building bricks and blocks
DE1023875B (de) * 1956-03-19 1958-02-06 Metallgummi G M B H Zwischenlage aus Gummi oder aehnlichen elastischen Stoffen fuer die Auflagerung von Betonbauteilen
US3107377A (en) * 1959-09-18 1963-10-22 Hamilton Kent Mfg Company Bridge pad and its use
FR1463160A (fr) * 1965-11-10 1966-06-03 Complexes Bois Resines Du Sud Dispositif de construction de cloisons fixes ou démontables
US3278158A (en) * 1964-08-06 1966-10-11 Saldana Juan Angel Lifting mechanism, actuating means therefor and slab anchoring means therefor
CH447569A (de) * 1967-02-27 1967-11-30 Novopan Ag Unterlagsboden aus Holz- oder Holzwerkstoffplatten für Gehbeläge
NL6710164A (enrdf_load_stackoverflow) * 1966-07-22 1968-01-23

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR662205A (fr) * 1927-10-14 1929-08-05 Ig Farbenindustrie Ag Procédé d'impression de laine avec des sels éthérifiés de composés leuco de colorants pour cuve
FR43505E (fr) * 1933-05-18 1934-06-23 Perfectionnements appliqués à la fabrication et pose des parquets
GB544382A (en) * 1941-01-13 1942-04-10 Harry Mason Improvements relating to building bricks and blocks
DE1023875B (de) * 1956-03-19 1958-02-06 Metallgummi G M B H Zwischenlage aus Gummi oder aehnlichen elastischen Stoffen fuer die Auflagerung von Betonbauteilen
US3107377A (en) * 1959-09-18 1963-10-22 Hamilton Kent Mfg Company Bridge pad and its use
US3278158A (en) * 1964-08-06 1966-10-11 Saldana Juan Angel Lifting mechanism, actuating means therefor and slab anchoring means therefor
FR1463160A (fr) * 1965-11-10 1966-06-03 Complexes Bois Resines Du Sud Dispositif de construction de cloisons fixes ou démontables
NL6710164A (enrdf_load_stackoverflow) * 1966-07-22 1968-01-23
CH447569A (de) * 1967-02-27 1967-11-30 Novopan Ag Unterlagsboden aus Holz- oder Holzwerkstoffplatten für Gehbeläge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731965A (en) * 1987-02-19 1988-03-22 Jensen Brian A Adjustable shim
US5442882A (en) * 1994-04-20 1995-08-22 Repasky; John Universal slope compensator for use in constructing a flat surface
EP1528170A1 (en) * 2003-10-28 2005-05-04 Echo Floor system, prefabricated element and process for manufacturing the prefabricated element
BE1015755A3 (nl) * 2003-10-28 2005-08-02 Echo Vloersysteem, geprefabriceerd element en werkwijze voor vervaardigen van geprefabriceerd element.
US10724235B2 (en) * 2015-04-23 2020-07-28 Hughes General Contractors, Inc. Joint-free concrete

Also Published As

Publication number Publication date
DK119575B (da) 1971-01-25
FI48772B (enrdf_load_stackoverflow) 1974-09-02
FI48772C (fi) 1974-12-10
CH520841A (de) 1972-03-31
FR2019602A1 (enrdf_load_stackoverflow) 1970-07-03
DE1946254A1 (de) 1970-04-16
GB1267047A (enrdf_load_stackoverflow) 1972-03-15
NL6914373A (enrdf_load_stackoverflow) 1970-04-03
NO123149B (enrdf_load_stackoverflow) 1971-10-04

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