WO1983000324A1 - Pre-moistening plastic fibres for concrete - Google Patents

Pre-moistening plastic fibres for concrete Download PDF

Info

Publication number
WO1983000324A1
WO1983000324A1 PCT/DK1982/000071 DK8200071W WO8300324A1 WO 1983000324 A1 WO1983000324 A1 WO 1983000324A1 DK 8200071 W DK8200071 W DK 8200071W WO 8300324 A1 WO8300324 A1 WO 8300324A1
Authority
WO
WIPO (PCT)
Prior art keywords
concrete
plastic fibres
moistening
fibres
plastic
Prior art date
Application number
PCT/DK1982/000071
Other languages
French (fr)
Inventor
Contact Agri
Beton-Industri Perstrup
Original Assignee
Strabo, Finn, Christian
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 Strabo, Finn, Christian filed Critical Strabo, Finn, Christian
Publication of WO1983000324A1 publication Critical patent/WO1983000324A1/en

Links

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
    • 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
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials

Definitions

  • the invention relates to a method for intermixing plastic fibres in concrete through pre-moistening said plastic fibres.
  • the method according to the invention consists in moistening the fibres for instance in the amount of liquid weighed for the concrete mixture, v/ith the result that the plastic fibres can be nixed in the concrete without the above problems in the form of floating layers and fiber nests. At the same time, it is possible to reduce the consumption of water, super plastifying additives and air-entraining liquids which is of crucial importance to the strength of the finished concrete.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Method for intermixing plastic fibres in a concrete mass through a pre-moistening of the plastic fibres before these are added to the concrete mixture. Such method causes an easy and even dispersion of the plastic fibres which facilitates the depositing and increases the product quality.

Description

PRE-MOISTENING PLASTIC FIBRES FOR CONCRETE
The invention relates to a method for intermixing plastic fibres in concrete through pre-moistening said plastic fibres.
For a number of years the use of plastic fibres, such as krenit, polya ide and others for reinforcing con¬ crete has been hampered since these during inter¬ mixing tend to position themselves on top of the aggregate concrete mass as a kind of floating layer and/or to tangle in fibre nests during mixing.
Therefore, it has not been possible sufficiently quickly and conveniently to add plastic fibres to concrete using traditional mixing equipment in the form of for instance gravity batch mixers.
During the last 2-3 years intensive experiments in this field have among other things been carried on at Danmarks Tekniske Højskole (The Technical University of Denmark) and at Perstrup Beton-Inaustri ApS and"" others.
The method according to the invention consists in moistening the fibres for instance in the amount of liquid weighed for the concrete mixture, v/ith the result that the plastic fibres can be nixed in the concrete without the above problems in the form of floating layers and fiber nests. At the same time, it is possible to reduce the consumption of water, super plastifying additives and air-entraining liquids which is of crucial importance to the strength of the finished concrete.
OV.P1
SΛ . v._ro Furthermore, by using the above pre-moistening tech¬ nique as regards the plastic fibres it is possible to intermix far greater amounts of plastic fibres in the concrete than ordinarily, especially if these are moistened in a mixture of water and super plastifier, whereby due to the resulting influence the fibres are easily dispersed in the concrete mass.

Claims

C L A I M
Method for intermixing plastic fibres in concrete mixtures, c h a r a c t e r i z e d i n, that before being added to the concrete the plastic fibres are moistened in water, super plastifier or another liq¬ uid both through a moistening in portions of fibres and through a continuous moistening concurrently wiτ.h the dosing of the plastic fibres in the concrete mixture.
PCT/DK1982/000071 1981-07-27 1982-07-22 Pre-moistening plastic fibres for concrete WO1983000324A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK333981A DK333981A (en) 1981-07-27 1981-07-27 PRE-HEATING OF PLASTIC FIBERS FOR CONCRETE
DK3339/81810727 1981-07-27

Publications (1)

Publication Number Publication Date
WO1983000324A1 true WO1983000324A1 (en) 1983-02-03

Family

ID=8121768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1982/000071 WO1983000324A1 (en) 1981-07-27 1982-07-22 Pre-moistening plastic fibres for concrete

Country Status (3)

Country Link
EP (1) EP0085067A1 (en)
DK (1) DK333981A (en)
WO (1) WO1983000324A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000059812A1 (en) 1999-04-07 2000-10-12 Hudson-Sharp Machine Company Conveyor apparatus for conveying stacks of articles
US7045209B1 (en) 2000-03-28 2006-05-16 Dror Selivansky Synthetic fibers and cementitious systems including same
DE19860335B4 (en) * 1997-12-25 2007-02-22 Chisso Corp. Concrete reinforcing fiber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6821881B2 (en) 2001-07-25 2004-11-23 Applied Materials, Inc. Method for chemical mechanical polishing of semiconductor substrates

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899344A (en) * 1972-11-06 1975-08-12 California Cement Shake Co Fiber reinforced concrete products and their formation
DE2816457A1 (en) * 1977-04-20 1978-11-02 Chemiefaser Lenzing Ag MIXTURE, PARTICULARLY BUILDING MATERIAL MIXTURE, AND METHOD FOR PRODUCING MOLDED BODIES FROM THIS MIXTURE
US4127417A (en) * 1976-11-22 1978-11-28 Kao Soap Co., Ltd. Method for improving workability of fresh fiber containing cement mortar and concrete
DE2055541B2 (en) * 1969-11-12 1978-12-21 National Research Development Corp., London Process for preparing a mixture containing fibrous material, cement or plaster of paris and water
DE3002484A1 (en) * 1979-02-09 1980-08-28 Amiantus Ag METHOD FOR PRODUCING A FIBER REINFORCED HYDRAULIC SETTING MATERIAL
DE3019900A1 (en) * 1979-05-25 1980-12-11 Inventa Ag METHOD FOR PRODUCING A FIBER REINFORCED HYDRAULIC BINDING AGENT
GB2065735A (en) * 1979-12-18 1981-07-01 Amrotex Ag Fibre-cement boards
EP0047158A1 (en) * 1980-08-29 1982-03-10 Dansk Eternit-Fabrik A/S A process for the manufacture of fibre reinforced shaped articles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2055541B2 (en) * 1969-11-12 1978-12-21 National Research Development Corp., London Process for preparing a mixture containing fibrous material, cement or plaster of paris and water
US3899344A (en) * 1972-11-06 1975-08-12 California Cement Shake Co Fiber reinforced concrete products and their formation
US4127417A (en) * 1976-11-22 1978-11-28 Kao Soap Co., Ltd. Method for improving workability of fresh fiber containing cement mortar and concrete
DE2816457A1 (en) * 1977-04-20 1978-11-02 Chemiefaser Lenzing Ag MIXTURE, PARTICULARLY BUILDING MATERIAL MIXTURE, AND METHOD FOR PRODUCING MOLDED BODIES FROM THIS MIXTURE
DE3002484A1 (en) * 1979-02-09 1980-08-28 Amiantus Ag METHOD FOR PRODUCING A FIBER REINFORCED HYDRAULIC SETTING MATERIAL
DE3019900A1 (en) * 1979-05-25 1980-12-11 Inventa Ag METHOD FOR PRODUCING A FIBER REINFORCED HYDRAULIC BINDING AGENT
GB2065735A (en) * 1979-12-18 1981-07-01 Amrotex Ag Fibre-cement boards
EP0047158A1 (en) * 1980-08-29 1982-03-10 Dansk Eternit-Fabrik A/S A process for the manufacture of fibre reinforced shaped articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
V.M. Malhotra, Developments in the use of superplasticizers 1981, Publication SP-68 American Concrete Institute, Detroit; V. Ramakrishman, W.V. Coyle, P.A. Kopac,T.J. Pasko, Performance Characteristics of Steel Fiber Reinforced Superplasticized Concrete, p 515-534. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860335B4 (en) * 1997-12-25 2007-02-22 Chisso Corp. Concrete reinforcing fiber
WO2000059812A1 (en) 1999-04-07 2000-10-12 Hudson-Sharp Machine Company Conveyor apparatus for conveying stacks of articles
US7045209B1 (en) 2000-03-28 2006-05-16 Dror Selivansky Synthetic fibers and cementitious systems including same

Also Published As

Publication number Publication date
DK333981A (en) 1983-01-28
EP0085067A1 (en) 1983-08-10

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