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EP0183526A1 - Improvements in fibre reinforced cement - Google Patents

Improvements in fibre reinforced cement 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Withdrawn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
German (de)
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/en
Withdrawn legal-status Critical Current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.

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  • 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)

Abstract

A building panel comprises a laver of glass reinforced cement (12) cast in a mould (20, 22) to a required thickness or thicknesses. In order to reinforce the structure and also to resist cracking during hardening of the material a mesh of reinforcement (24) is embedded in at least a part of the layer (12), the elements (26, 28) of the mesh (24) being fixed' together to support the material through the reinforced zone.

Description

  • 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. Thus, 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. Furthermore, 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. Early on in the development of GRC, 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. 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.
  • In summary, therefore, whilst 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.
  • Preferahlv, 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.
  • In accordance with a second aspect of the present invetion, there is provided a permanent formwork panel comprising a building panel according to said first aspect of the present invention.
  • In accordance with a third aspect of the present invention, there is provided 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.
  • When the formwork panel of the building structure is loaded in tension, 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. In turn, the fibre reinforcement in the cement reinforces the cement between the elements of the reinforcing arrangement. Thus, there are two levels of reinforcement. On the one hand, 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.
  • Tests have shown that excessive loading of the panels does not cause few and large cracks, but instead causes micro-cracking within the areas of the reinforcing arrangement, which has little detrimental effect on either the weather resistance of the panel or the appearance of the panel.
  • In addition to reducing large scale cracking as a result of loading the panel, the inclusion of the reinforcing arrangement also relieves stresses built up in the panel due to curing, creep, moisture and/or thermal movement.
  • It is, of course, known to provide steel reinforcement in concrete structures in order to increase the ability of the structure to cope with tension. Whilst the reinforcing arrangement employed in the present invention does have that effect, this is not the only effect. The reinforcing arrangement and the reinforcing fibres interact to particular advantage to provide two stages of reinforcement which improve the long-term structural integrity of the panel.
  • Figure 1 of the drawings has already been described above.
  • There now follows a description, bv way of example, of one specific embodiment of the invention, reference being made to the following drawings in which:
    • Figure 2 is a partial sectional view of a bridge decking panel according to the invention; and
    • Figure 3 is a partial perspective view, partly cut awav of the panel of Figure 2; and
    • Figures 4 to 6 illustrate a further embodiment.
  • Referring to Figures 2 and 3, 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. During construction of the bridge, 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.
  • Tn use, 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.
  • Reference is now made to Figures 4 to 6 of the accompanying drawings which show a similar bridge decking panel to that of Figures 2 and 3 and like parts have been allotted the same reference numerals. The important differences are that the reinforcing mesh 24 is confined to the bottom parts only of the flat bottom V-shaped portions 18 and does not extend up the sides of the V-shaped portions as in the previous construction and also that the sections of mesh 24 are wholly embedded in the flass fibre reinforced cement panel. Further important differences are that the 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.

Claims (7)

  1. l.A building panel composed of, or having an outer layer of fibre reinforced cement, characterised in that an arrangement of tension resistant reinforcement (24) embedded in at least a part of the panel (121 in or adjacent the fibre reinforced cement, the reinforcement comprising a multiplicity of elongate members (26,28) arranged in a mesh with the members secured together where they intersect to constrain the material of the panel throughout the zone in which the reinforcement lies.
  2. 2.A panel as claimed in Claim 1, characterised in that the mesh comprises one set of spaced parallel extending elongate elements (26) and a second set of spaced parallel extending elements (28) extending transverse to the first set and secured thereto where they intersect the first set.
  3. 3.A panel as claimed in Claim 2, characterised in that the typical length of the fibres in the cement and the size of the spaces in the mesh (24) are of the same order.
  4. 4.A panel as claimed in any preceding claim, characterised in that the reinforcement elements (26,28) are of steel or are of plastics material and the elements are secured together by welding.
  5. 5.A panel as claimed in any preceding claim, characterised in that the fibre in the cement (121 is of one or more of the following materials: glass fibre, mineral fibre, steel fibre, synthetic fibre or vegetable fibre.
  6. 6.A permanent formwork panel comprising a building panel as claimed in any preceding claim.
  7. 7.A building structure having an outer surface portion provided by a permanent formwork panel (12) as claimed in any preceding claim, and a structural concrete portion (32) bonded to the permanent formwork panel.
EP85308579A 1984-11-28 1985-11-26 Improvements in fibre reinforced cement Withdrawn EP0183526A1 (en)

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 (en) 1986-06-04

Family

ID=10570373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308579A Withdrawn EP0183526A1 (en) 1984-11-28 1985-11-26 Improvements in fibre reinforced cement

Country Status (7)

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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017057A1 (en) * 1990-05-26 1991-11-28 Peter Breidenbach CLAY PLATE AND METHOD FOR THEIR PRODUCTION
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 (en) * 2001-06-26 2003-01-08 동국엔지니어링 주식회사 Deck plate for bridge construction
EP1709257A4 (en) * 2004-01-20 2008-07-02 Jetstone Building Systems Pty Composite constructional element and method of manufacturing a composite constructional element
CN112359721A (en) * 2020-11-06 2021-02-12 同济大学建筑设计研究院(集团)有限公司 High-performance fiber reinforced cement-based concrete bridge deck continuous structure and construction method

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IT8721826A0 (en) * 1987-09-08 1987-09-08 Francesco Fatati SYSTEM FOR CREATING STRUCTURES, EVEN PREFABRICATED, HOWEVER COMPLEX, OF EXTREMELY LOW OVERALL WEIGHT, IN CONCRETE, OF SMALL THICKNESS, REINFORCED WITH MESH.
DK23896A (en) * 1996-03-04 1997-09-05 Cemsystems I S Roc-composite system
US9499980B2 (en) 2013-09-16 2016-11-22 National Gypsum Properties, Llc Lightweight cementitious panel possessing high durability background
MX359620B (en) * 2013-09-16 2018-10-04 Nat Gypsum Properties Llc Lightweight cementitious panel possessing high durability.
US9914245B2 (en) 2013-09-16 2018-03-13 National Gypsum Properties, Llc Controlling the embedding depth of reinforcing mesh to cementitious board
US9676118B2 (en) 2013-09-16 2017-06-13 National Gypsum Properties, Llc Formation of cementitious board with lightweight aggregate
CN104453079B (en) * 2014-12-08 2017-08-25 重庆市臻成建材有限公司 The anti-folding light cellular partition board of assembled
EP3405476B1 (en) 2016-01-20 2022-05-18 Polypeptide Laboratories Holding (PPL) AB METHOD FOR PREPARATION OF PEPTIDES WITH psWANG LINKER
CN113733299A (en) * 2021-08-18 2021-12-03 河北宏京新型建材有限公司 Production process of glass fiber reinforced concrete GRC

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DE2357557B1 (en) * 1973-11-17 1975-04-10 Friedrich 7407 Moessingen Haarburger Reinforcement insert for lightweight structures
US4021258A (en) * 1972-09-25 1977-05-03 Teijin Limited Concrete structure and method of preparing same
EP0002267A1 (en) * 1977-12-02 1979-06-13 Hermann Schemel Method of manufacturing fibre-reinforced concrete structural elements and structural elements manufactured according to this method
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 (en) * 1979-12-31 1981-07-23 Histeel S.A., Lausanne Multiphase construction material with low sensitivity to impact - where concrete contg. metal, polymer, and/or glass fibres, is reinforced by steel rods or plate
GB2123048A (en) * 1982-06-10 1984-01-25 Hong An Se Building board and its method of manufacture

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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 (en) * 1975-11-04 1981-07-16 Veldhoen Jan Hendrik METHOD FOR MANUFACTURING A CEMENT PRODUCT WITH A PLASTIC COATING

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 (en) * 1973-11-17 1975-04-10 Friedrich 7407 Moessingen Haarburger Reinforcement insert for lightweight structures
EP0002267A1 (en) * 1977-12-02 1979-06-13 Hermann Schemel Method of manufacturing fibre-reinforced concrete structural elements and structural elements manufactured according to this method
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 (en) * 1979-12-31 1981-07-23 Histeel S.A., Lausanne Multiphase construction material with low sensitivity to impact - where concrete contg. metal, polymer, and/or glass fibres, is reinforced by steel rods or plate
GB2123048A (en) * 1982-06-10 1984-01-25 Hong An Se Building board and its method of manufacture

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4017057A1 (en) * 1990-05-26 1991-11-28 Peter Breidenbach CLAY PLATE AND METHOD FOR THEIR PRODUCTION
DE4017057C2 (en) * 1990-05-26 1999-11-04 Peter Breidenbach Clay building board and process for its manufacture
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 (en) * 2001-06-26 2003-01-08 동국엔지니어링 주식회사 Deck plate for bridge construction
EP1709257A4 (en) * 2004-01-20 2008-07-02 Jetstone Building Systems Pty Composite constructional element and method of manufacturing a composite constructional element
CN112359721A (en) * 2020-11-06 2021-02-12 同济大学建筑设计研究院(集团)有限公司 High-performance fiber reinforced cement-based concrete bridge deck continuous structure and construction method

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GB2167466A (en) 1986-05-29
AU5044885A (en) 1986-06-05
WO1986003245A1 (en) 1986-06-05
ES8700372A1 (en) 1986-10-01
GB8529076D0 (en) 1986-01-02
GB8429992D0 (en) 1985-01-09
ES549327A0 (en) 1986-10-01
ZA859114B (en) 1986-08-27
NO854749L (en) 1986-05-29

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