AU695022B2 - Manufacture of building materials and structures as well as building slabs from fibre cement - Google Patents

Manufacture of building materials and structures as well as building slabs from fibre cement Download PDF

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Publication number
AU695022B2
AU695022B2 AU27289/95A AU2728995A AU695022B2 AU 695022 B2 AU695022 B2 AU 695022B2 AU 27289/95 A AU27289/95 A AU 27289/95A AU 2728995 A AU2728995 A AU 2728995A AU 695022 B2 AU695022 B2 AU 695022B2
Authority
AU
Australia
Prior art keywords
materials
fibres
building
cement
structures
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.)
Expired - Fee Related
Application number
AU27289/95A
Other versions
AU2728995A (en
Inventor
Rolf Berkenkamp
Horst Brix
Johannes Dietrich
Rudolf Schumm
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.)
Fulgurit Baustoffe GmbH
Original Assignee
Fulgurit Baustoffe GmbH
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 Fulgurit Baustoffe GmbH filed Critical Fulgurit Baustoffe GmbH
Publication of AU2728995A publication Critical patent/AU2728995A/en
Application granted granted Critical
Publication of AU695022B2 publication Critical patent/AU695022B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/06—Macromolecular compounds fibrous
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/02—Cellulosic materials
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/20—Waste materials; Refuse organic from macromolecular compounds
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/346—Materials exhibiting reduced plastic shrinkage cracking
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

1- P/00/O011 Regulation 3.2
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT *o a *4L* 4
ORIGINAL
Name of Applicant: Actual Inventors: Address for service in Australia: Invention Title: FULGURIT BAUSTOFFE GmbH Rolf BERKENKAMP; Horst BRIX; Johannes DIETRICH and Rudolf SCHUMM CARTER SMITH BEADLE 2 Railway Parade Camberwell Victoria 3124 Australia MANUFACTURE OF BUILDING MATERIALS AND STRUCTURES, AS WELL AS BUILDING SLABS FROM FIBRE CEMENT The following statement is a full description of this invention, including the best method of performing it known to us -2- MANUFACTURE OF BUILDING MATERIALS AND STRUCTURES, AS WELL AS BUILDING SLABS FROM FIBRE CEMENT The present invention relates to the manufacture of building materials and structures as well as building slabs from fibre cement, wherein cement is used as binder and fibres, such as pulp fibres, synthetic fibres and the like, are used as reinforcement.
With known building materials of this type there is the difficulty that the water balance or moisture can be uneven over th cross-section of building materials and building slabs, in particular in the case of compressed building materials and building slabs, if drying is uneven over the cross-section of building materials and "building slabs, wherein drier areas alternate with areas of greater moisture, which can result in cracking in the building structures or building slabs, especially in the vicinity of the edges.
15 Because these cracks present such disadvantages, the object of the present invention is to produce a building material or building slab of the type initially ,described, in which these cracks are prevented.
This task is solved according to the present invention by a portion of the reinforcing fibres being substituted by frayed recycled synthetic materials and/or waste materials.
o With this process also a portion of the reinforcing fibres can be substituted :by frayed recycled cellulose materials and/or waste materials.
It is further possible with this process to substitute a portion of the reinforcing fibres by frayed recycled synthetic materials and/or waste materials, as well as by frayed recycled cellulose materials and/or waste materials.
The result of this arrangement is firstly to enable processing of such a material on a Hatschek machine, since the cement bonding is improved in such a way by electrical surface charge on account of the use of this synthetic material that passage of the material through the perforated cylinder is greatly reduced.
In the prior art, a reduction in the cement passing through the perforated GWN:JL:#18361 31 July 1995 I -3cylinder is achieved by the addition of flocculants, resulting in so-called flocculation, wherein the size of the flakes does not fully prevent the solid material from passing through the perforated cylinder.
By way of comparison, with the arrangement according to the present invention or with the building material according to the present invention, flocculation is caused by the synthetic material; this forms flakes of a size which seem to prevent the solid material from penetrating through the openings in the perforated cylinder.
The water retention value or the retaining power of the cement in the case of the known process, as well as in the case of the process according to the present invention, is quite similar. The considerable advantage of the process according to the present invention is that the moisture distribution is even over the cross-section It• of the building structure or the building material, ensuring that the abovementioned disadvantage of cracking due to unevenness in moisture distribution is now 15 prevented.
The considerable advantage of the process according to the present invention -r :is essentially in the improved capillary formation and thus in the improved porosity of the building material, the uniformity of which eliminates cracks better than in previously known processes.
With the process according to the present invention, on the basis of the different flocculation (large flakes compared to small flakes in the prior art) another matrix is produced which exhibits the abovementioned advantages with respect to the evenness of moisture distribution. This evenness is present, irrespective of the flake size.
'd 25 This matrix lends itself to processing on a Hatschek machine, wherein there are no difficulties associated with the formation building structures or building slabs on a formatting roller and breast roll.
The proportion of synthetic can be from 5 to 25% by weight, with a quantity of 15 to 25% by weight being a particular advantage. On the basis of costing, the choice of the abovementioned recycled synthetic materials ensures economic use of OWNdL#1836 31 July 1995 ftwwmmwmwiml 4this quantity. The material thus extracted can be processed after corresponding preparation by the Hatschek method.
The so-called zeta potential differential serves to bring about the required fixing-in and delivers fine small flakes, so that additional flocculation is necessary for effective hourly capacity of the perforated cylinder and for preventing the cement from penetrating through the openings in the perforated cylinder, in which the individual flakes are essentially larger than those generated by the zeta potential.
The zeta potential is accordingly an electrical surface charge which leads to tight bonding between the cement and the fibres. This means a potential difference which lies either between plus and minus or between plus and/or two minus values.
The man skilled in the art would know and readily understand the Hatschek process. Briefly, in the Hatschek process, a fibre-cement fleece is wound in a drum until the desired thickness/strength is reached. Subsequently, it is cut and made into a plane sheet or plate.
ft...
I
I
GWN:IL#18361 31 July 1995

Claims (5)

1. A process for manufacturing building materials and structures, as well as building slabs from fibre cement in accordance with the Hatschek method, wherein cement is used as binder and fibres, such as cellulose fibres, synthetic fibres and the like, are used as reinforcement, characterised in that a portion of the reinforcing fibres includes frayed recycled synthetic materials and/or waste material.
2. Process as claimed in claim 1, characterised in that the portion of the above mentioned materials is from 5 to 25% by weight of the whole matrix.
3. Process as claimed in claim 1 or claim 2, characterised in that the portion of the abovementioned materials is from 15 to 25% by weight of the whole matrix.
4. Process as claimed in any one of the foregoing claims, characterised in that flakes of cement and fibre are formed which are essentially larger than those generated by a smaller differentiated zeta potential of the individual materials. S 15
5. A process for manufacturing building material and structures as claimed in claim 1 substantially as hereinbefore described. ft 0s 9f DATED: 23 June 1998 a CARTER SMITH BEADLE Patent Attorneys for the Applicant: FULGURIT BAUSTOFFE GmbH GWNl:IR#18361.RSI 23 June 1998 i e I~ ic'ic l ii-i i* r ABSTRACT A process for manufacturing building materials and structures as well as building slabs from fibre cement in accordance with the Hatschek method, wherein cement is used as binder and fibres, such as cellulose fibres, synthetic fibres and the like, are used as reinforcement, is carried into effect such that sufficient moisture is attained and cracks are extensively prevented. According to the present invention there is provision for a portion of the reinforcing fibres to be substituted by frayed recycled synthetic materials and/or waste material. f Juy C r t f t ti f GWN:JL#l8361 31 ly 1995
AU27289/95A 1994-08-03 1995-07-31 Manufacture of building materials and structures as well as building slabs from fibre cement Expired - Fee Related AU695022B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4427383 1994-08-03
DE4427383 1994-08-03
DE19525266 1995-07-12
DE19525266A DE19525266A1 (en) 1994-08-03 1995-07-12 Manufacture of building materials and structures as well as building boards made of fiber cement

Publications (2)

Publication Number Publication Date
AU2728995A AU2728995A (en) 1996-02-15
AU695022B2 true AU695022B2 (en) 1998-08-06

Family

ID=25938898

Family Applications (1)

Application Number Title Priority Date Filing Date
AU27289/95A Expired - Fee Related AU695022B2 (en) 1994-08-03 1995-07-31 Manufacture of building materials and structures as well as building slabs from fibre cement

Country Status (9)

Country Link
EP (1) EP0695728A3 (en)
JP (1) JPH08169738A (en)
KR (1) KR960007498A (en)
AU (1) AU695022B2 (en)
BR (1) BR9503532A (en)
CZ (1) CZ197195A3 (en)
DE (1) DE19525266A1 (en)
PL (1) PL309864A1 (en)
SK (1) SK95195A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4558851B2 (en) * 1998-08-10 2010-10-06 有限会社小川節夫研究所 Inorganic hydraulic composition and plate material
CZ298265B6 (en) * 2003-04-10 2007-08-08 D & Daxner Technology S.R.O. Mixture for producing building elements and process for producing the building elements
CZ2007206A3 (en) * 2007-03-19 2009-03-11 Ceské vysoké ucení technické v Praze Fibrous concrete intended particularly for earth structures
CZ304475B6 (en) * 2009-11-30 2014-05-21 České vysoké učení technické v Praze, Fakulta stavební Fibrous concrete for ground structures and other unexacting structures of housing construction and community buildings constructions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012832A (en) * 1978-01-20 1979-08-01 Partek Ab Process for the Production of Asbestos-Free Building Board by the Take-Up Method
DE4233208A1 (en) * 1991-04-04 1994-04-07 Hiendl Heribert Construction boarding material - formed by layers with differing filler contents to give inner light core and flanking outer surfaces of higher density

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428775A (en) * 1981-02-11 1984-01-31 National Gypsum Company Reinforced cement sheet product containing no asbestos for fabricating on hatschek machine
GB8700536D0 (en) * 1987-01-10 1987-02-11 Excel Ind Ltd Dry milled fibre cement products
AT394547B (en) * 1988-03-21 1992-04-27 Basta Walter Hydraulically settable or bound building material, for example concrete, mortar, cement/sand mixtures, etc., containing polypropylene fibres as aggregate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012832A (en) * 1978-01-20 1979-08-01 Partek Ab Process for the Production of Asbestos-Free Building Board by the Take-Up Method
DE4233208A1 (en) * 1991-04-04 1994-04-07 Hiendl Heribert Construction boarding material - formed by layers with differing filler contents to give inner light core and flanking outer surfaces of higher density

Also Published As

Publication number Publication date
KR960007498A (en) 1996-03-22
EP0695728A2 (en) 1996-02-07
PL309864A1 (en) 1996-02-05
EP0695728A3 (en) 1996-05-15
SK95195A3 (en) 1997-08-06
CZ197195A3 (en) 1996-02-14
DE19525266A1 (en) 1996-02-08
AU2728995A (en) 1996-02-15
BR9503532A (en) 1996-06-04
JPH08169738A (en) 1996-07-02

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