EP0295245A1 - Composite cement block - Google Patents

Composite cement block

Info

Publication number
EP0295245A1
EP0295245A1 EP87901003A EP87901003A EP0295245A1 EP 0295245 A1 EP0295245 A1 EP 0295245A1 EP 87901003 A EP87901003 A EP 87901003A EP 87901003 A EP87901003 A EP 87901003A EP 0295245 A1 EP0295245 A1 EP 0295245A1
Authority
EP
European Patent Office
Prior art keywords
mix
building unit
block
dry
dimension
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Withdrawn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
EP87901003A
Other languages
German (de)
French (fr)
Other versions
EP0295245A4 (en
Inventor
Leon Kruss
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0295245A4 publication Critical patent/EP0295245A4/en
Publication of EP0295245A1 publication Critical patent/EP0295245A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • B28B7/183—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for building blocks or similar block-shaped objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/24—Unitary mould structures with a plurality of moulding spaces, e.g. moulds divided into multiple moulding spaces by integratable partitions, mould part structures providing a number of moulding spaces in mutual co-operation
    • B28B7/241—Detachable assemblies of mould parts providing only in mutual co-operation a number of complete moulding spaces
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • 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
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
    • 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
    • E04C2/043—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 of plaster
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a building composition, a building unit and a method of making same.
  • the text of Australian provisional specification PH6196 and Australian provisional specification PH4396 is incorporated herein by cross-reference.
  • Relatively complicated composition typically comprising many more than three components. Poor fire resistance or fire rating. Poor compression strength.
  • a relatively light block can be built from the composition.
  • the resulting block has good compressive strength and good fire withstand capability.
  • the resulting block will reliably hold screws, nails and the like.
  • a dry mix suitable for making a building unit comprising, by dry weight: sawdust in the range 20% - 50% cement in the range 30% - 50% lime in the range 5% - 20%
  • the mix comprises, by dry weight, about 50% sawdust, about 35% cement, and about 15% lime.
  • a building unit manufactured from the above mix is provided.
  • a method of making a building unit comprising the steps of initially creating a dry mix as defined above, producing a wet mix by mixing said dry mix with water in the above specified proportions, pouring said wet mix immediately into at least one mould, allowing said wet mix to drain and set in said at least one mould, and removing said building unit from said at least one mould upon setting of said wet mix.
  • a building unit and, specifically, a building block is made according to the above method.
  • a mortar mix based on the above described dry mix
  • Figure 2 depicts a mould in an open state suitable for making a block of the preferred embodiment
  • Figure 3 depicts the mould of Figure 2 with tubular inserts inserted
  • Figure 4 depicts a group of moulds as arranged for mass production.
  • An object of at least a preferred embodiment of the present invention is to produce a building composition, building unit and method of making same which possess as a common factor:
  • a building unit in particular a building block having desirable properties and of dimensions 600mm x 200mm x 100mm is constructed as follows:
  • a dry mix comprising by weight 50% sawdust 35% cement 15% lime of sufficient quantity to fill five moulds of internal dimension 600mm x 200mm x 100mm is mixed with 25 litres of water to produce approximately 1 square metre of wall surface area of blocks (5 blocks) of dimension 600mm x 200mm x 100mm.
  • the wet mix is poured into moulds of construction as depicted in Figs. 2 to 4 (except without the tubular inserts) of the internal dimension 600mm x 200mm x 100mm and allowed to set. Excess water mix is allowed to drain naturally frcm the moulds. Setting takes place within 24 hours whereupon the blocks can be released from the moulds.
  • the blocks are allowed to cure for a period of time, for example a few days, at room temperature.
  • the resultant block is preferably of solid construction having no channels or voids within the structure.
  • composition together with the solid structure provides a block having the following characteristics as construed in terms used in the trade: the block will accept screws and nails; the block may be cut without crumbling or cracking; the block weighs under 10 kilograms; the block exhibits excellent acoustic, strength and fire rating properties - fire rating typically 4 hours - compression typically 20 MPa - acoustic insulation minimum 41 dBa.
  • the block of this example is preferably for internal use.
  • 1% glue can be added to the dry weight composition.
  • a building unit, in particular a building block having desirable properties and of dimension 600 mm x 300 mm x 100 mm is constructed as follows: a dry mix comprising sawdust 60%; cement 30%; lime 10% of sufficient quantity to fill five moulds of internal dimension 600 mm x 300 mm x 100 mm is mixed with 25 litres of water to produce approximately 1 square metre wall surface area of blocks (5 blocks) of dimension 600 mm x 300 mm x 100mm.
  • the wet mix is poured into moulds of construction as depicted in Figs. 2 to 4 of internal dimension 600 mm x 300 mm x 100 mm and allowed to set. Excess water mix is allowed to drain naturally from the moulds. Setting takes place within 24 hours whereupon the blocks can be released from the moulds.
  • the blocks are allowed to cure for a period of time, for example, a few days, at room temperature.
  • the resultant block 1 is depicted in Fig. 1 having parallel, circular cross-section voids 2 extending therethrough as shown.
  • the block so produced has the following characteristics as construed in terms used in the trade: the block will accept screws and nails without the need for any form of plug to be initially inserted. The screws and nails are retained in a manner similar to their retention in timber; the block may be cut without crumbling or cracking; the block weighs approximately 9 to 10 kgs which allows it to be lifted unaided by a building worker under current industrial regulations; the block is substantially crack resistant; the block is dimensionally stable under varying conditions of temperature, humidity and age; the block exhibits accoustic, strength and fire rating properties which render it suitable for use in domestic and commercial buildings according to current building regulations and market trends - refer elsewhere in the specification; the block is relatively quick and simple to produce.
  • the material composition of the dry mix can be varied over the following range (by dry weight): sawdust 50-70%; cement 40-20%; lime 10%.
  • the lime composition should always be approximately 10% as indicated above.
  • the sawdust and cement components can be interchanged within the ranges given providing their total comes to approximately 90% of the total dry mix weight. Reducing the cement component makes the resulting block somewhat more brittle and reduces its compressive strength. A variation of a few percent on either side of the above ranges should be allowable in practice and yet still provide a block with the characteristics described. Ambient conditions and the quality of the components may affect these ranges and, therefore, when employing a mix near the endpoints of the specified range trial and error experimentation is advisable to ensure that the required characteristics are indeed produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Une composition anhydre, utilisée pour fabriquer une unité de construction, comprend, exprimés en poids à sec, 20 à 50% de sciure de bois, 30 à 50% de ciment et 5 à 20% de chaux (oxyde de calcium). Dans un mode de réalisation préféré, ladite composition peut également contenir jusqu'à 1% de colle. L'unité de construction qui en résulte peut servir à former des blocs de construction dont les dimensions sont de préférence égales à 600mm x 300mm x 100mm ou 600mm x 200mm x 100mm. Lorsqu'ils sont fabriqués sous leur forme finale, lesdits blocs présentent des propriétés de compression, de résistance au feu et d'isolation acoustique améliorées.An anhydrous composition, used to manufacture a construction unit, comprises, expressed in dry weight, 20 to 50% of sawdust, 30 to 50% of cement and 5 to 20% of lime (calcium oxide). In a preferred embodiment, said composition can also contain up to 1% of adhesive. The resulting construction unit can be used to form building blocks whose dimensions are preferably equal to 600mm x 300mm x 100mm or 600mm x 200mm x 100mm. When produced in their final form, said blocks exhibit improved compression, fire resistance and sound insulation properties.

Description

Composite Cement Block
TECHNICAL FIELD The present invention relates to a building composition, a building unit and a method of making same. The text of Australian provisional specification PH6196 and Australian provisional specification PH4396 is incorporated herein by cross-reference.
BACKGROUND ART In the above referenced earlier provisional specifications prior art building block materials were discussed. In summary, prior art compositions and the building blocks resulting therefrom suffer from one of more of the following defects:
Relatively complicated composition typically comprising many more than three components. Poor fire resistance or fire rating. Poor compression strength.
Crack or crumble or other wise deteriorate relatively quickly upon exposure to the elements, particularly water. Will not reliably hold fixing devices such as screws or nails. Where such prior art compositions do not suffer from the above defects then they are typically relatively heavy.
It is an object of the present invention to provide a building composition and method of making same which overcomes one or more of the defects of the prior art. The advantages to be gained by use of the selected composition of the present invention include one or more of the following:
A relatively light block can be built from the composition. The resulting block has good compressive strength and good fire withstand capability. The resulting block will reliably hold screws, nails and the like.
DISCLOSURE OF INVENTION In a preferred form there is provided a dry mix suitable for making a building unit, said mix comprising, by dry weight: sawdust in the range 20% - 50% cement in the range 30% - 50% lime in the range 5% - 20%
In yet a further preferred form the mix comprises, by dry weight, about 50% sawdust, about 35% cement, and about 15% lime. In a further broad form there is provided a building unit manufactured from the above mix.
In a preferred form enough dry mix to manufacture five blocks of dimension 600mm by 300mm by 100mm is combined with 25 litres of water, placed in block moulds and allowed to drain and set.
In yet a further broad form there is provided a method of making a building unit comprising the steps of initially creating a dry mix as defined above, producing a wet mix by mixing said dry mix with water in the above specified proportions, pouring said wet mix immediately into at least one mould, allowing said wet mix to drain and set in said at least one mould, and removing said building unit from said at least one mould upon setting of said wet mix.
Preferably, a building unit and, specifically, a building block is made according to the above method. In a further broad form there is provided a mortar mix based on the above described dry mix
BRIEF DESCRIPTION OF DRAWINGS Embodiments of the present invention and a method of making same will now be described with reference to the drawings in which:- Figure 1 is a perspective view of a block of a preferred embodiment according to Example 1 proposed using the moulds of Example 2;
Figure 2 depicts a mould in an open state suitable for making a block of the preferred embodiment;
Figure 3 depicts the mould of Figure 2 with tubular inserts inserted;
Figure 4 depicts a group of moulds as arranged for mass production.
MODES OF CARRYING OUR THE INVENTION An object of at least a preferred embodiment of the present invention is to produce a building composition, building unit and method of making same which possess as a common factor:
- simplicity of ingredients;
- cheap, readily available components;
- production of a building unit or building composition having improved utility over gypsum/plaster blocks or concrete blocks;
- ease of manufacture due to simplicity of components and favourable setting and curing characteristics.
EXAMPLE 1
A building unit, in particular a building block having desirable properties and of dimensions 600mm x 200mm x 100mm is constructed as follows:
A dry mix comprising by weight 50% sawdust 35% cement 15% lime of sufficient quantity to fill five moulds of internal dimension 600mm x 200mm x 100mm is mixed with 25 litres of water to produce approximately 1 square metre of wall surface area of blocks (5 blocks) of dimension 600mm x 200mm x 100mm. The wet mix is poured into moulds of construction as depicted in Figs. 2 to 4 (except without the tubular inserts) of the internal dimension 600mm x 200mm x 100mm and allowed to set. Excess water mix is allowed to drain naturally frcm the moulds. Setting takes place within 24 hours whereupon the blocks can be released from the moulds. Preferably, the blocks are allowed to cure for a period of time, for example a few days, at room temperature.
The resultant block is preferably of solid construction having no channels or voids within the structure.
The composition together with the solid structure provides a block having the following characteristics as construed in terms used in the trade: the block will accept screws and nails; the block may be cut without crumbling or cracking; the block weighs under 10 kilograms; the block exhibits excellent acoustic, strength and fire rating properties - fire rating typically 4 hours - compression typically 20 MPa - acoustic insulation minimum 41 dBa.
The block of this example is preferably for internal use. In a preferred form, 1% glue can be added to the dry weight composition.
EXAMPLE 2
A building unit, in particular a building block having desirable properties and of dimension 600 mm x 300 mm x 100 mm is constructed as follows: a dry mix comprising sawdust 60%; cement 30%; lime 10% of sufficient quantity to fill five moulds of internal dimension 600 mm x 300 mm x 100 mm is mixed with 25 litres of water to produce approximately 1 square metre wall surface area of blocks (5 blocks) of dimension 600 mm x 300 mm x 100mm. The wet mix is poured into moulds of construction as depicted in Figs. 2 to 4 of internal dimension 600 mm x 300 mm x 100 mm and allowed to set. Excess water mix is allowed to drain naturally from the moulds. Setting takes place within 24 hours whereupon the blocks can be released from the moulds. Preferably, the blocks are allowed to cure for a period of time, for example, a few days, at room temperature.
The resultant block 1 is depicted in Fig. 1 having parallel, circular cross-section voids 2 extending therethrough as shown.
The block so produced has the following characteristics as construed in terms used in the trade: the block will accept screws and nails without the need for any form of plug to be initially inserted. The screws and nails are retained in a manner similar to their retention in timber; the block may be cut without crumbling or cracking; the block weighs approximately 9 to 10 kgs which allows it to be lifted unaided by a building worker under current industrial regulations; the block is substantially crack resistant; the block is dimensionally stable under varying conditions of temperature, humidity and age; the block exhibits accoustic, strength and fire rating properties which render it suitable for use in domestic and commercial buildings according to current building regulations and market trends - refer elsewhere in the specification; the block is relatively quick and simple to produce.
The materials from which the block is made are readily available and relatively cheap.
The material composition of the dry mix can be varied over the following range (by dry weight): sawdust 50-70%; cement 40-20%; lime 10%.
The lime composition should always be approximately 10% as indicated above. However, the sawdust and cement components can be interchanged within the ranges given providing their total comes to approximately 90% of the total dry mix weight. Reducing the cement component makes the resulting block somewhat more brittle and reduces its compressive strength. A variation of a few percent on either side of the above ranges should be allowable in practice and yet still provide a block with the characteristics described. Ambient conditions and the quality of the components may affect these ranges and, therefore, when employing a mix near the endpoints of the specified range trial and error experimentation is advisable to ensure that the required characteristics are indeed produced.
Reduction of cement below the range specified creates a block with defects as previously outlined in respect of plaster blocks. Additionally, the mix of the above preferred embodiment of Example 1, due to its relatively fine structure and controlled and short time drying properties, makes it suitable to produce blocks in individual moulds in groups, each block having parallel apertures extending at least substantially the whole of the way through the block in one direction. These apertures may extend quite close to the edges of the block without lowering the structural strength characteristics of the block to unacceptably low levels. This is, in part, due to the fine structure of the block mix.

Claims

1. A dry mix suitable for making a building unit, said mix comprising, by dry weight: sawdust in the range 20% - 50% cement in the range 30% - 50% lime in the range 5% - 20%
2. A mix suitable for making a building unit, said mix comprising, by dry weight, about 50% sawdust, about 35% cement and about 15% lime.
3. A building unit manufactured from the mix of claim 1 or claim 2.
4. A building unit according to claim 3 manufactured in solid block form of approximate dimension 600mm x 300mm x 100mm.
5. A building unit according to claim 3 manufactured in solid block form of approximate dimension 600mm x 200mm x 100mm.
6. A method of making a building unit comprising the steps of initially creating a dry mix as claimed in claim 1 or claim 2, producing a wet mix by mixing said dry mix with water, pouring said wet mix immediately into at least one mould, allowing said wet mix to drain and set in said at least one mould, and removing said building unit from said at least one mould upon setting of said wet mix.
7. The method of claim 6 wherein said wet mix is scaled proportionately on the basis approximately 25 litres of water together with said dry mix in sufficient quantity to manufacture 5 blocks of dimension 600mm x 300mm x 100mm.
8. The method of claim 6 wherein said wet mix is scaled proportionately on the basis approximately 25 litres of water together with said dry mix in sufficient quantity to manufacture 5 blocks of dimension 600mm x 200mm x 100mm.
9. A mortar mix comprising a sufficient quantity of water mixed together with the dry mix of claim 1 or claim 2.
10. The mix of claims 1, 2 or 9 further including approximately 1% by weight glue.
11. A block made from the mix of claim 10 of dimension 600mm x 200mm x 100mm.
EP87901003A 1986-01-31 1987-02-02 Composite cement block Withdrawn EP0295245A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AU4396/86 1986-01-31
AUPH439686 1986-01-31
AU6196/86 1986-05-30
AUPH619686 1986-05-30
AU8863/86 1986-11-07
AUPH886386 1986-11-07

Publications (2)

Publication Number Publication Date
EP0295245A4 EP0295245A4 (en) 1988-11-24
EP0295245A1 true EP0295245A1 (en) 1988-12-21

Family

ID=27157284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87901003A Withdrawn EP0295245A1 (en) 1986-01-31 1987-02-02 Composite cement block

Country Status (2)

Country Link
EP (1) EP0295245A1 (en)
WO (2) WO1987004700A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT474U1 (en) * 1995-05-16 1995-11-27 St A D Bauprojektentwicklungs BUILDING MATERIAL WITH WOOD FLOUR
DE10036668A1 (en) * 2000-07-26 2002-02-28 F I X Gmbh Prefabricated plaster wall construction panel has series of parallel inner channels opening onto opposite end surfaces
ES2356877B1 (en) * 2009-06-15 2012-03-06 Horbiopat S.L. CONSTRUCTION MATERIAL, PROCEDURE FOR OBTAINING SUCH MATERIAL, CONSTRUCTION ELEMENT ELABORATED USING SUCH MATERIAL AND USE OF THE MATERIAL AS CO2 SUPPLIER TO IMMOBILIZE LONG-TERM CARBON.
CN101929202B (en) * 2009-06-19 2012-06-27 詹德威 Heat-preservation cold-resistance sound-insulation device and hollow bearing wall construction method using same
CN103465356A (en) * 2013-09-30 2013-12-25 遵义吉安轻质墙材有限公司 Gypsum block pouring die

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Publication number Priority date Publication date Assignee Title
DE407365C (en) * 1923-07-17 1924-12-11 Josef Weibel Process for the production of components
CH118657A (en) * 1926-03-03 1927-01-17 Marcel Fazan Method of manufacturing construction elements.
CH166136A (en) * 1932-12-09 1933-12-31 Kiefer Adolf Process for the production of a weatherproof and volume-resistant, acid-free cement-concrete mass with wood flour as filling material.
GB445460A (en) * 1934-07-05 1936-04-02 Hendrikus Franciscus Waards Process of manufacturing stucco, plates, panels and the like covering and building elements
US2594280A (en) * 1949-03-11 1952-04-29 Julian F Beaudet Cement bonded natural cellulose aggregate impregnated with cured synthetic resin and method of making the same
DE847725C (en) * 1951-03-04 1952-08-28 Albert Halstenberg Materials for the production of nailable stones, lightweight panels, floor coverings, etc. like
FR1052895A (en) * 1952-01-16 1954-01-28 Manufacturing process of a coating forming thermal and acoustic insulation for the coating of walls, ceilings and floors of buildings
FR1148735A (en) * 1955-04-26 1957-12-13 Process for the production of building blocks, building elements and the like
FR2484995A3 (en) * 1979-08-09 1981-12-24 Aschero Leon Insulating composite materials with good insulating properties - comprising resinous sawdust, opt. wood chips, glue and synthetic cement
AU530787B2 (en) * 1982-08-05 1983-07-28 Ausi-Crete Pty. Ltd. Lightweight building/formwork element

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No relevant documents have been disclosed. *
See also references of WO8704700A1 *

Also Published As

Publication number Publication date
WO1987004699A1 (en) 1987-08-13
WO1987004700A1 (en) 1987-08-13
EP0295245A4 (en) 1988-11-24

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