EP2859160B1 - Modular element in sintered expanded-polystyrene for building reinforced-concrete floors - Google Patents

Modular element in sintered expanded-polystyrene for building reinforced-concrete floors Download PDF

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Publication number
EP2859160B1
EP2859160B1 EP13756672.5A EP13756672A EP2859160B1 EP 2859160 B1 EP2859160 B1 EP 2859160B1 EP 13756672 A EP13756672 A EP 13756672A EP 2859160 B1 EP2859160 B1 EP 2859160B1
Authority
EP
European Patent Office
Prior art keywords
polystyrene
expanded
modular
sintered
metal sections
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.)
Active
Application number
EP13756672.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2859160A1 (en
Inventor
Pierluigi ORSINI
Marco Rovellini
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.)
DST Constructions Ltd
Original Assignee
DST Constructions Ltd
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 DST Constructions Ltd filed Critical DST Constructions Ltd
Priority to PL13756672T priority Critical patent/PL2859160T3/pl
Publication of EP2859160A1 publication Critical patent/EP2859160A1/en
Application granted granted Critical
Publication of EP2859160B1 publication Critical patent/EP2859160B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/18—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
    • E04B5/19—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members the filling members acting as self-supporting permanent forms
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/18—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly cast between filling members
    • E04B5/21—Cross-ribbed floors

Definitions

  • the present invention refers to prefabricated elements made of insulating materials to be used in the construction of floors, and in particular to a modular element made of sintered expanded-polystyrene for building reinforced-concrete floors.
  • the invention also relates to a reinforced-concrete floor built by using a plurality of said modular elements, arranged one adjacent to the other, which remain integrated in the floor.
  • the floor building technique is substantially identical in both cases and provides to form said casting plane through a plurality of self-supporting elements arranged side by side, preferably with overlap or mutual joints, and resting at their ends against perimeter walls or pillars.
  • reinforcing rods are arranged in a fully conventional manner, so that, once the casting has occurred, the floor embeds within itself both the expanded-polystyrene elements and the reinforcing rods.
  • longitudinal joists are hence formed, which provide the mechanical strenght of the floor once the concrete has hardened.
  • the floor with expanded-polystyrene elements has - the mechanical strenght being the same - a remarkably smaller weight and a much greater thermal insulation coefficient.
  • WO-A-98/16703 is a representative document of the technique illustrated above which discloses a prefabricated element made of polystyrene wherein two Z-shaped longitudinal metal sections are embedded, upon fabrication of said elements, which metal sections provide a self-support feature thereto.
  • the lower sides of the L-shaped sections are in view and resting on the lower face of the prefabricated element, so that they may be used to fasten a metal reinforcing mesh thereto by welding.
  • Such mesh is meant to ease the anchoring of a lower covering such as plaster and to guarantee the overall mechanical solidity of the construction even in case of fire, in which situation the expanded-polystyrene material might melt due to the high temperatures:
  • the problem at the basis of the invention is to provide a prefabricated polystyrene element of the type illustrated above which allows, in addition to the reinforced-concrete longitudinal joists described above, also building crosswise joists, so that the mechanical strenght of the floor is identical in the two directions forming a so-called plate floor with remarkably better performances.
  • WO-A-2005/121467 discloses a modular element according to the preamble of claim 1 and has a structure fully similar to the one described above for WO-A-98/16703 , of which it recalls all the essential elements.
  • the metal sections which make the polystyrene element self-supporting have an L shape, wherein the upper end of the section is folded on itself, hence causing a slight thickening thereof.
  • the element is conceptually identical to the one described above and it hence allows building floors only provided with reinforced-concrete joists having a longitudinal direction.
  • the metal sections are not provided during the manufacturing process of the polystyrene elements, but are inserted later, into respective seats formed in the polystyrene through a mechanical cutting process (for example by hot thread) of the element.
  • This separate-steps fabrication method hence allows to form also a series of crosswise grooves in the polystyrene element into which reinforcing rods may then be arranged to thus finally obtain a plate floor having reinforced-concrete joists oriented in two perpendicular directions.
  • a first disadvantage is due to the fact that the metal sections are no longer securely anchored to the expanded material - as occurs instead in the simultaneous manufacturing process in which said material penetrates, in the fluid state, in the holes existing on the wings of said sections - but are simply inserted in the same. That close connection between sections and expanded material is hence lacking, which connection being the only feature apt to cause an even and correct distribution of the mutual loads both during the transport and laying operations and during the floor-building step.
  • a second remarkable operational disadvantage is furthermore connected to the fact that the operation of laying the reinforcing rods in the crosswise channels may of course be accomplished only after the metal sections have been positioned, thus creating a plurality of barriers within said channels. It is hence not possible to arrange the rods in said channels from above, according to the standard building site procedure, but the rods must instead be inserted laterally introducing them one by one into the holes provided on the wings of the different metal sections which interrupt the continuity of said channels. Hence an operation which is not always possible to be performed, due to the evident need for a free space next to the floor under construction having a size at least corresponding to that of the floor itself, and in any case an extremely long, difficult and labour-intensive operation.
  • WO-A-2006/040624 addresses the same problem, however, offering a solution of a different type, in which the polystyrene elements are divided into two separate layers which are mounted only during the installation on-site.
  • a first base layer forms a low-thickness continuous plane and embeds the metal sections which provide a self-support feature thereto.
  • a second layer consists instead of individual parallelepiped elements which are positioned one-by-one according to a grid-like pattern on the base layer, forcedly inserting them on a portion of the metal sections protruding from the base layer, so as to leave between them both longitudinal channels and crosswise channels in which the reinforcing rods are then arranged.
  • the object of the present invention is hence that of providing a prefabricated polystyrene element of the self-supporting type which solves the above-described problem of allowing building a plate floor comprising reinforced-concrete joists in two orthogonal directions, however, without being affected by the above-described drawbacks of the prior art.
  • a second object of the present invention is to provide a prefabricated polystyrene element of the type described above, already perfectly complete and available in modules extending in a longitudinal direction at a desired length, so that such element may be directly installed side by side to other similar elements, without requiring any other further mounting or finishing operation or insertion of additional bodies, despite allowing the desired creation of said crosswise channels.
  • each modular element E of the present invention consists of a single sintered, expanded-polystyrene body, within which two metal sections A are embedded which impart a self-support feature to the element, in a fully similar way to the reference known art consisting of above-described patent WO-A-98/16703 .
  • the polystyrene body has any length and a substantially rectangular section from which lateral wings 4 project below, said wings 4 having a reduced thickness compared to the one of the main inner portion 1 of said body.
  • the modular element of the present invention is characterised - compared to the prior art - by the fact that metal sections A have an ⁇ -shaped section, preferably comprising edge-connected planar sides, as well as by the fact that the overall height h of such sections is substantially equal to the thickness of the wings 4 of element E. Due to this particular construction it is possible to provide within each element E a series of crosswise recesses 2 being so depth as to extend up to the upper part of the metal sections A.
  • Recesses 2 can thus have a fully equivalent size, both in width and in depth, to the longitudinal cavities 3 which are formed in the junction area between two adjacent elements E, according to the teachings of the prior art, said recesses 2 and cavities 3 thereby defining the inner portions 1 of modular element E which have a square or rectangular shape depending on whether the pitch of recesses 2 is equal to or different from the width of portions 1.
  • a network of orthogonal channels 2 or 3 is thus formed, within which it is easy and immediate to arrange, from above, reinforcing rods F while, where desirable, a metal reinforcement mesh R may simply be rested above the inner portions 1 of elements E.
  • a concrete cast C above the casting plane consisting of elements E positioned side by side, builds the desired plate floor provided with reinforced-concrete joists both in a longitudinal direction and in a crosswise direction, thus reaching the object of the invention.
  • metal sections A have an ⁇ -shaped section, to be precise consisting of five edge-connected planar sides.
  • the two terminal sides and the central one of the section are parallel to the lower face of element E while the two intermediate sides are perpendicular or moderately inclined with respect to such face.
  • one of said terminal sides is positioned adjacent to and outside the expanded-polystyrene body, so as to be able to be used for the anchoring of a metal reinforcing mesh, in a manner known per se, while the other terminal side is embedded in the expanded-polystyrene body.
  • the modular, expanded-polystyrene element E of the present invention has fully achieved the set objects.
  • it is an element which is completely prefabricated in all its details in the desired length and which may hence be installed in a fast and easily automatable way.
  • the metal sections A which provide the self-support feature thereof are entirely embedded in the expanded-polystyrene body and hence perfectly integral with the same.
  • the arrangement of multiple adjacent elements E hence allows to obtain - with no further operations but the simple laying, from above, of reinforcing rods F in a conventional manner - a casting plane already prepared with orthogonal channels for building a plate floor with bidirectional reinforced joists.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
EP13756672.5A 2012-06-12 2013-06-11 Modular element in sintered expanded-polystyrene for building reinforced-concrete floors Active EP2859160B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13756672T PL2859160T3 (pl) 2012-06-12 2013-06-11 Element modułowy w spiekanym styropianie do budowania stropów żelbetowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001022A ITMI20121022A1 (it) 2012-06-12 2012-06-12 Elemento modulare in polistirene espanso sinterizzato per la formazione di solai in calcestruzzo armato e solaio in calcestruzzo armato comprendente una pluralita' di detti elementi modulari.
PCT/IB2013/054772 WO2013186698A1 (en) 2012-06-12 2013-06-11 Modular element in sintered expanded-polystyrene for building reinforced-concrete floors

Publications (2)

Publication Number Publication Date
EP2859160A1 EP2859160A1 (en) 2015-04-15
EP2859160B1 true EP2859160B1 (en) 2016-07-27

Family

ID=46397452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13756672.5A Active EP2859160B1 (en) 2012-06-12 2013-06-11 Modular element in sintered expanded-polystyrene for building reinforced-concrete floors

Country Status (9)

Country Link
EP (1) EP2859160B1 (ko)
JP (1) JP6343277B2 (ko)
KR (1) KR102171006B1 (ko)
CN (1) CN104583506B (ko)
HK (1) HK1209804A1 (ko)
IN (1) IN2015DN00086A (ko)
IT (1) ITMI20121022A1 (ko)
PL (1) PL2859160T3 (ko)
WO (1) WO2013186698A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019006123A1 (en) * 2017-06-28 2019-01-03 Innovative Design Solutions Llc PREFABRICATED CONCRETE PANEL AND METHOD
US11214963B2 (en) 2014-01-31 2022-01-04 Innovative Design Solutions Llc Method of forming a concrete panel
CN104005502B (zh) * 2014-05-04 2016-09-07 黄涛 一种预制轻质楼盖板及工业化建筑房屋楼层板结构
US20180142472A1 (en) * 2015-04-28 2018-05-24 Mansoor Aliabadi Farahani Easy waffle ceiling with i shape section
CN105178603A (zh) * 2015-06-17 2015-12-23 深圳建业工程集团股份有限公司 一种eps聚苯免拆模板混凝土楼盖板施工工艺方法
KR102206668B1 (ko) * 2019-09-25 2021-01-25 중산하이픽스 주식회사 결속 간격재
CN111395621A (zh) * 2020-03-24 2020-07-10 河北智构建筑科技发展有限公司 一种装配式轻质承重楼板、建筑装置及其制备方法

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JPH085982B2 (ja) * 1989-09-27 1996-01-24 東レ株式会社 繊維強化発泡体およびその製造方法
DK0749511T3 (da) * 1994-03-10 1998-05-18 Joergen Lassen Element til brug ved fremstilling af en armeret betonstruktur med hulrum, fyldelegeme til fremstilling af et sådant element, samt fremgangsmåde ved fremstilling af en armeret betonstruktur med hulrum
US5893248A (en) * 1996-09-19 1999-04-13 Beliveau; Jean-Louis Insulating panel and method for building and insulating a ceiling structure
IT1284961B1 (it) 1996-10-15 1998-05-28 Plastedil Sa Elemento costruttivo autoportante in materia plastica espansa in particolare per la realizzazione di solai e pareti di edifici
ITMI20030985A1 (it) * 2003-05-16 2004-11-17 Plastedil Sa Elemento costruttivo composito, in particolare per la realizzazione di strutture di parete per edifici e procedimento per la sua fabbricazione.
ITMI20041189A1 (it) 2004-06-14 2004-09-14 Plastedil Sa Elemento costruttivo autoportante in materia plastica espansa in particolare per la realizzazione di solai di edifici e struttura di solaio incorporante tale elemento
ITMI20041935A1 (it) * 2004-10-13 2005-01-13 Plastedil Sa Struttura di solaio perfezionata
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Also Published As

Publication number Publication date
JP2015523480A (ja) 2015-08-13
KR102171006B1 (ko) 2020-10-29
KR20150042183A (ko) 2015-04-20
WO2013186698A1 (en) 2013-12-19
CN104583506A (zh) 2015-04-29
JP6343277B2 (ja) 2018-06-13
PL2859160T3 (pl) 2017-05-31
HK1209804A1 (en) 2016-04-08
EP2859160A1 (en) 2015-04-15
CN104583506B (zh) 2017-04-19
IN2015DN00086A (ko) 2015-05-29
ITMI20121022A1 (it) 2012-09-11

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