HK181795A - Method for modifying concrete properties - Google Patents

Method for modifying concrete properties Download PDF

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Publication number
HK181795A
HK181795A HK181795A HK181795A HK181795A HK 181795 A HK181795 A HK 181795A HK 181795 A HK181795 A HK 181795A HK 181795 A HK181795 A HK 181795A HK 181795 A HK181795 A HK 181795A
Authority
HK
Hong Kong
Prior art keywords
concrete
admixture
paper
bag
repulpable
Prior art date
Application number
HK181795A
Other languages
English (en)
French (fr)
Inventor
A Valle Stephen
E Sorenson John
C Hegger Robert
W Wydra Walter
Original Assignee
W.R. Grace & Co.-Conn.
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
Priority claimed from US07/563,580 external-priority patent/US5224774A/en
Application filed by W.R. Grace & Co.-Conn. filed Critical W.R. Grace & Co.-Conn.
Publication of HK181795A publication Critical patent/HK181795A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
    • B28C5/402—Methods
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B28C7/064—Supply from sacks; Sack openers
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Paper (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Paving Structures (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Reinforced Plastic Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Saccharide Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Claims (9)

  1. Verfahren zum Modifizieren der Eigenschaften von Beton, bei dem
    a) ein ungeöffneter Papierbeutel aus wasserunlöslichem, aufschließbarem Holländer-Papier, welcher Fasern enthält, die geeignet sind, den Beton bei Aushärten des Betons zu verstärken, und aus Stahl, Glas, synthetischem Material oder einer Kombination derselben zusammengesetzt sind, in den frischen Beton eingebracht wird und
    b) der frische Beton aus Schritt a) in einem Chargenmischer für eine ausreichende Zeit gemischt wird, damit sich der Papierbeutel aus wasserunlöslichen, aufschließbaren Holländer-Papier unter Fragmentieren in Stücke zersetzen und sich das Gemisch relativ gleichmäßig im frischen Beton verteilen kann.
  2. Verfahren nach Anspruch 1, bei dem der aufschließbare Holländer-Papierbeutel mehrwandiges Kraft-Papier umfaßt.
  3. Verfahren nach Anspruch 1 oder 2, bei dem das Papier ein aufschließbares Holländer-Papier mit einem Flächengewicht von etwa 22,7 kg (50 lbs.), einer Reißfestigkeit in Maschinenrichtung von etwa 109 und einer Zugfestigkeit in Maschinenrichtung von etwa 16 ist.
  4. Verfahren nach Anspruch 3, bei dem das aufschließbare Holländer-Papier aus 100% Kiefer-Zellstoff hergestellt ist.
  5. Verfahren nach einem der vorhergehenden Ansprüche, bei dem der Beutel mit einem wasserlöslichen Klebstoff verschlossen ist.
  6. Verfahren nach Anspruch 5, bei dem der wasserlösliche Klebstoff eine Einkomponenten-Acrylcopolymer-Emulsion ist.
  7. Verfahren nach einem der Ansprüche 1 bis 6, bei dem ein solcher Beutel pro Kubikmeter Beton verwendet wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, bei dem die Fasern aus Polypropylen in kollationierter, fibrillierter Form bestehen.
  9. Verfahren nach einem der Ansprüche 1 bis 8, bei dem die Fasern 13,6 bis 19,1 mm (1/2 bis 3/4 inch) lang sind.
HK181795A 1990-08-07 1995-11-30 Method for modifying concrete properties HK181795A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/563,580 US5224774A (en) 1990-08-07 1990-08-07 Concrete additive product and method of use
US07/683,214 US5203629A (en) 1990-08-07 1991-04-10 Method for modifying concrete properties

Publications (1)

Publication Number Publication Date
HK181795A true HK181795A (en) 1995-12-08

Family

ID=27073327

Family Applications (1)

Application Number Title Priority Date Filing Date
HK181795A HK181795A (en) 1990-08-07 1995-11-30 Method for modifying concrete properties

Country Status (18)

Country Link
US (1) US5203629A (de)
EP (1) EP0470829B1 (de)
JP (1) JPH04251711A (de)
KR (1) KR920004299A (de)
AT (1) ATE121712T1 (de)
AU (1) AU634409B2 (de)
CA (1) CA2048468C (de)
DE (1) DE69109204T2 (de)
DK (1) DK0470829T3 (de)
ES (1) ES2071225T3 (de)
FI (1) FI104164B1 (de)
HK (1) HK181795A (de)
IL (1) IL99004A (de)
MY (1) MY106787A (de)
NO (1) NO308129B1 (de)
NZ (1) NZ239188A (de)
PT (1) PT98581B (de)
TW (1) TW223049B (de)

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Also Published As

Publication number Publication date
CA2048468A1 (en) 1992-02-08
NO913003L (no) 1992-02-10
AU8144991A (en) 1992-02-13
IL99004A (en) 1996-10-16
FI104164B (fi) 1999-11-30
DE69109204T2 (de) 1995-08-31
ATE121712T1 (de) 1995-05-15
EP0470829B1 (de) 1995-04-26
TW223049B (de) 1994-05-01
KR920004299A (ko) 1992-03-27
NO913003D0 (no) 1991-08-01
CA2048468C (en) 1996-10-22
NZ239188A (en) 1993-09-27
FI913734L (fi) 1992-02-08
AU634409B2 (en) 1993-02-18
DK0470829T3 (da) 1995-07-17
FI104164B1 (fi) 1999-11-30
FI913734A0 (fi) 1991-08-06
US5203629A (en) 1993-04-20
JPH04251711A (ja) 1992-09-08
ES2071225T3 (es) 1995-06-16
IL99004A0 (en) 1992-07-15
EP0470829A1 (de) 1992-02-12
MY106787A (en) 1995-07-31
PT98581A (pt) 1992-06-30
DE69109204D1 (de) 1995-06-01
NO308129B1 (no) 2000-07-31
PT98581B (pt) 1997-07-31

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PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040807