EP0183526A1 - Faserverstärkter Zement - Google Patents

Faserverstärkter Zement Download PDF

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Publication number
EP0183526A1
EP0183526A1 EP85308579A EP85308579A EP0183526A1 EP 0183526 A1 EP0183526 A1 EP 0183526A1 EP 85308579 A EP85308579 A EP 85308579A EP 85308579 A EP85308579 A EP 85308579A EP 0183526 A1 EP0183526 A1 EP 0183526A1
Authority
EP
European Patent Office
Prior art keywords
panel
fibre
reinforcement
grc
mesh
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Withdrawn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
EP85308579A
Other languages
English (en)
French (fr)
Inventor
Edward Kempster
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.)
PERMANENT FORMWORK Ltd
Original Assignee
PERMANENT FORMWORK 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 PERMANENT FORMWORK Ltd filed Critical PERMANENT FORMWORK Ltd
Publication of EP0183526A1 publication Critical patent/EP0183526A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E04C3/294—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete of concrete combined with a girder-like structure extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • 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
    • E04C2/06—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 reinforced
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E04C5/073—Discrete reinforcing elements, e.g. fibres
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/262—Concrete reinforced with steel fibres
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/264—Concrete reinforced with glass fibres
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/266—Concrete reinforced with fibres other than steel or glass

Definitions

  • Glass fibre reinforced cement f'GRC has been known for many years.
  • the main advantages of the material are that, at least initially, it has a high flexural strength compared with concrete; in view of its high cement content it is extremely weather-resistant; and it can be formed into thin shaped sheets of the order of 10mm thick with a pleasing surface texture.
  • the material is useful in making, for example, permanent formwork is erected from GRC panels, and concrete is then cast using the GRC panels as a mould with the panels supporting the pressure of the concrete whilst it sets.
  • the concrete bonds to the GRC panels, which form a permanent, weather-resistant, aesthetically pleasing, outer skin to the cast concrete.
  • the GRC panels are usually designed so that during construction they are sufficiently strong to support a workman's weight, and this is especially advantageous when GRC is used in the construction of bridge decking.
  • GRC does, however, have some disadvantages.
  • alkali attack of the glass fibres was a serious problem. It has been alleviated to some extent by the use of special glass, for example, glass having a high zirconium content. Nevertheless, aging is still a problem. As the material is reduced, until after about twenty vears in normal weather conditions the glass fibres have little effect at all on the material.
  • Figure 1 of the accompanying drawings is a stress-strain diagram for GRC, the full line and dashed line showing the behavious of young GRC and aged GRC, respectively, in tension. For moderate stresses, both young and aged GRC act substantially as elastic materials.
  • GRC With larger stresses aged GRC fails, but young GRC does not, the stress being taking to a substantial extent by the glass fibres. Building structures are usually designed so that the GRC is stressed only in the elastic region. However, due to incorrect design calculations or overloading of the structure, the GRC may be subjected to stresses above the elastic limit. Young GRC can withstand such stresses, but aged GRC will crack. Furthermore, repeated excessive loading of young GRC will break down the glass-fibre matrix with the result that after a short time the material will exhibit similar properties to aged GRC. A further disadvantage of GRC is that it shrinks more than concrete and except in the case of relatively small elements or members, cracks tend to occur in the weakest zone.
  • GRC can assist in the production of concrete structures and can initially provide a weather-resistant, aesthetically-pleasing outer skin for the concrete, with time and/or excessive loading the GRC cracks and thus its weather resistance and aesthetic appeal are reduced.
  • the object of the present invention is to provide a material which has the advantage of GRC as described above but which suffers to a lesser extent from at least some of the disadvantages described above.
  • This invention provides a building panel composed of, or having an outer layer of fibre reinforced cement, with an arrangement of tension resistant reinforcement embedded in at least a part of the panel or adjacent the fibre reinforced cement, the reinforcement comprising a multiplicity of elongate members secured together where they intersect to constrain the material of the panel throughout the zone in which the reinforcement lies.
  • the arrangement of reinforcement comprises a mesh.
  • the reinforcement is preferably of steel, which may be galvanised or stainless, but the mesh may be of high modulus plastics material, eg, "Netlon” (Trade Mark).
  • the fibre in the fibre reinforced cement is preferably of glass, but it may be one or more of the following materials: glass fibre, mineral fibre, steel fibre, high modulus synthetic fibre and vegetable fibre.
  • a permanent formwork panel comprising a building panel according to said first aspect of the present invention.
  • a building structure having an outer surface provided by a permanent formwork panel according to said second aspect of the present invention, and a structural concrete portion bonded to the permanent formwork panel.
  • the reinforcement arrangement of the panel takes the stress to a substantial extent and thus the stress pattern across the panel is even or varies progressively rather than having discontinuities due to the onset of cracking.
  • the fibre reinforcement in the cement reinforces the cement between the elements of the reinforcing arrangement.
  • the added reinforcement arrangement provides overall reinforcement of the panel and the fibre reinforcement provides localised reinforcement to the cement within the added reinforcement arrangement.
  • the inclusion of the reinforcing arrangement also relieves stresses built up in the panel due to curing, creep, moisture and/or thermal movement.
  • a bridge decking panel 10 has a lower exterior face 12 and an upper face 14 on which concrete is poured to provide the bridge deck.
  • the panel spans between two spaced supports with opposite edges 16 of the panel resting on the supports.
  • the panel has a plurality of flat-bottomed V-shaped portions 18, two of which are shown in Figure 2.
  • the panel is fabricated on a generally horizontal mould shaped to form the lower surface 12 of the panel.
  • Mortar is sprayed generally vertically downwardly onto the mould and at the same time chopped glass fibres, typically 35mm long, are also sprayed to form a random fibre reinforcement in the mortar.
  • the mortar is sprayed to a thickness of about 12mm on the horizontal portion 20 and about 8 1/2mm on the inclined portions 22.
  • the glass fibre reinforced mortar is then rolled in order to compact it.
  • a reinforcing arrangement is provided for each of the flat-bottomed V-shaped portions 18 by a galvanised steel mesh 24 having a plurality of longitudial elements 26 and a plurality of transverse elements 28 which are welded together. Each element has a diameter of about 2.3mm, and the spacing of the elements is about 50mm. Each mesh 24 is bent so that its shape is complementary to the sprayed GRC layer and is layed onto and becomes at least partially embedded in the surface of the GRC.
  • An elongate trapezoidal section expanded polystyrene former 30 is then suspended above each mesh, and concrete 32 containing a super-plasticiser is poured into each trough formed by the GRC so as to encapsulate the polystyrene formers 30 and provide a level upper face 14 of the panel.
  • the panel is then cured and demoulded.
  • the panel 10 fabricated as described above then has a GRC outer surface 12 with a reinforcing mesh 24 embedded at the interface of concrete 32 and the GRC layers.
  • the panels are assembled as a formwork and then concrete is poured behind the panels and into contact with the surface 14 so that upon curing of the concrete it bonds to surface 14.
  • polystyrene formers 30 utilised to cast the upper faces 14 of the panels are lodged in the V-shaped portions 18 part-way down the recess thereon to permit a non-structural glass reinforced cement layer to be cast over the formers to a level just below the top surface of the deck panel. Thus a completely enclosed void is created below the formers 30 in the finished structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Panels For Use In Building Construction (AREA)
  • Laminated Bodies (AREA)
EP85308579A 1984-11-28 1985-11-26 Faserverstärkter Zement Withdrawn EP0183526A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848429992A GB8429992D0 (en) 1984-11-28 1984-11-28 Fibre reinforced cement
GB8429992 1984-11-28

Publications (1)

Publication Number Publication Date
EP0183526A1 true EP0183526A1 (de) 1986-06-04

Family

ID=10570373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308579A Withdrawn EP0183526A1 (de) 1984-11-28 1985-11-26 Faserverstärkter Zement

Country Status (7)

Country Link
EP (1) EP0183526A1 (de)
AU (1) AU5044885A (de)
ES (1) ES8700372A1 (de)
GB (2) GB8429992D0 (de)
NO (1) NO854749L (de)
WO (1) WO1986003245A1 (de)
ZA (1) ZA859114B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017057A1 (de) * 1990-05-26 1991-11-28 Peter Breidenbach Lehmbauplatte und verfahren zu ihrer herstellung
WO1998035115A1 (en) * 1997-02-07 1998-08-13 Fibrobeton Yapi Elemanlari Sanayii Insaat Ve Tic.Ltd.Sti. Prefabric fiber reinforced cement (grc) wallpanel
WO2002010529A1 (en) * 2000-08-02 2002-02-07 Paragon Holdings Limited Prefabricated building
WO2002068768A1 (en) * 2001-02-20 2002-09-06 Precompressi Centro Nord S.P.A. Structural component for horizontal structures and floor structures
KR20030001685A (ko) * 2001-06-26 2003-01-08 동국엔지니어링 주식회사 교량 시공용 데크플레이트
EP1709257A1 (de) * 2004-01-20 2006-10-11 Jetstone Building Systems Pty Ltd. Verbund-konstruktionselement und verfahren zur herstellung eines verbund-konstruktionselements
CN112359721A (zh) * 2020-11-06 2021-02-12 同济大学建筑设计研究院(集团)有限公司 高性能纤维增强水泥基混凝土桥面连续构造及施工方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8721826A0 (it) * 1987-09-08 1987-09-08 Francesco Fatati Sistema per realizzare strutture, anche prefabbricate, comunque complesse, di peso globale estremamente ridotto, in calcestruzzo, di spessore esiguo, armato con reti.
DK23896A (da) * 1996-03-04 1997-09-05 Cemsystems I S Roc-Kompositsystem
MX359620B (es) * 2013-09-16 2018-10-04 Nat Gypsum Properties Llc Panel cementoso de peso ligero que posee alta durabilidad.
US9676118B2 (en) 2013-09-16 2017-06-13 National Gypsum Properties, Llc Formation of cementitious board with lightweight aggregate
US9914245B2 (en) 2013-09-16 2018-03-13 National Gypsum Properties, Llc Controlling the embedding depth of reinforcing mesh to cementitious board
US9499980B2 (en) 2013-09-16 2016-11-22 National Gypsum Properties, Llc Lightweight cementitious panel possessing high durability background
CN104453079B (zh) * 2014-12-08 2017-08-25 重庆市臻成建材有限公司 装配式抗折轻质隔墙板
WO2017127007A1 (en) 2016-01-20 2017-07-27 Poypeptide Laboratories Holding (Ppl) Ab METHOD FOR PREPARATION OF PEPTIDES WITH psWANG LINKER
CN113733299A (zh) * 2021-08-18 2021-12-03 河北宏京新型建材有限公司 一种玻璃纤维增强混凝土grc的生产工艺

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2357557B1 (de) * 1973-11-17 1975-04-10 Friedrich 7407 Moessingen Haarburger Verstärkungseinlage für Leichtbaukörper
US4021258A (en) * 1972-09-25 1977-05-03 Teijin Limited Concrete structure and method of preparing same
EP0002267A1 (de) * 1977-12-02 1979-06-13 Hermann Schemel Verfahren zum Herstellen von faserbewehrten Betonformteilen und nach diesem Verfahren hergestellte Formteile
GB2026585A (en) * 1978-07-26 1980-02-06 Fibermold Ltd Shuttering for casting bridge decks
GB2065742A (en) * 1979-10-03 1981-07-01 Kurimoto Ltd Glass fibre reinforced cement plates and method and apparaus for their manufacture
DE2952783A1 (de) * 1979-12-31 1981-07-23 Histeel S.A., Lausanne Multiphasen-material mit einer phase aus zement
GB2123048A (en) * 1982-06-10 1984-01-25 Hong An Se Building board and its method of manufacture

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1352203A (en) * 1971-10-29 1974-05-08 Barnards Ltd Reinforcement for concrete
GB1332621A (en) * 1972-03-24 1973-10-03 Sumaspace Ltd Reinforced concrete structural members
GB1450091A (en) * 1973-04-16 1976-09-22 Chubb & Sons Lock & Safe Co Concrete security structures
NL159906C (nl) * 1975-11-04 1981-07-16 Veldhoen Jan Hendrik Werkwijze voor het vervaardigen van een cementprodukt met een deklaag van kunststof.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021258A (en) * 1972-09-25 1977-05-03 Teijin Limited Concrete structure and method of preparing same
DE2357557B1 (de) * 1973-11-17 1975-04-10 Friedrich 7407 Moessingen Haarburger Verstärkungseinlage für Leichtbaukörper
EP0002267A1 (de) * 1977-12-02 1979-06-13 Hermann Schemel Verfahren zum Herstellen von faserbewehrten Betonformteilen und nach diesem Verfahren hergestellte Formteile
GB2026585A (en) * 1978-07-26 1980-02-06 Fibermold Ltd Shuttering for casting bridge decks
GB2065742A (en) * 1979-10-03 1981-07-01 Kurimoto Ltd Glass fibre reinforced cement plates and method and apparaus for their manufacture
DE2952783A1 (de) * 1979-12-31 1981-07-23 Histeel S.A., Lausanne Multiphasen-material mit einer phase aus zement
GB2123048A (en) * 1982-06-10 1984-01-25 Hong An Se Building board and its method of manufacture

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017057A1 (de) * 1990-05-26 1991-11-28 Peter Breidenbach Lehmbauplatte und verfahren zu ihrer herstellung
DE4017057C2 (de) * 1990-05-26 1999-11-04 Peter Breidenbach Lehmbauplatte und Verfahren zu ihrer Herstellung
WO1998035115A1 (en) * 1997-02-07 1998-08-13 Fibrobeton Yapi Elemanlari Sanayii Insaat Ve Tic.Ltd.Sti. Prefabric fiber reinforced cement (grc) wallpanel
WO2002010529A1 (en) * 2000-08-02 2002-02-07 Paragon Holdings Limited Prefabricated building
WO2002068768A1 (en) * 2001-02-20 2002-09-06 Precompressi Centro Nord S.P.A. Structural component for horizontal structures and floor structures
KR20030001685A (ko) * 2001-06-26 2003-01-08 동국엔지니어링 주식회사 교량 시공용 데크플레이트
EP1709257A1 (de) * 2004-01-20 2006-10-11 Jetstone Building Systems Pty Ltd. Verbund-konstruktionselement und verfahren zur herstellung eines verbund-konstruktionselements
EP1709257A4 (de) * 2004-01-20 2008-07-02 Jetstone Building Systems Pty Verbund-konstruktionselement und verfahren zur herstellung eines verbund-konstruktionselements
CN112359721A (zh) * 2020-11-06 2021-02-12 同济大学建筑设计研究院(集团)有限公司 高性能纤维增强水泥基混凝土桥面连续构造及施工方法

Also Published As

Publication number Publication date
GB2167466A (en) 1986-05-29
GB8429992D0 (en) 1985-01-09
WO1986003245A1 (en) 1986-06-05
ES8700372A1 (es) 1986-10-01
GB8529076D0 (en) 1986-01-02
ZA859114B (en) 1986-08-27
AU5044885A (en) 1986-06-05
NO854749L (no) 1986-05-29
ES549327A0 (es) 1986-10-01

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Inventor name: KEMPSTER, EDWARD