DE2312261A1 - Extracting setting retardants from fibrous materials - designated for compounding with hydraulic cement to produce structural materials - Google Patents

Extracting setting retardants from fibrous materials - designated for compounding with hydraulic cement to produce structural materials

Info

Publication number
DE2312261A1
DE2312261A1 DE2312261A DE2312261A DE2312261A1 DE 2312261 A1 DE2312261 A1 DE 2312261A1 DE 2312261 A DE2312261 A DE 2312261A DE 2312261 A DE2312261 A DE 2312261A DE 2312261 A1 DE2312261 A1 DE 2312261A1
Authority
DE
Germany
Prior art keywords
materials
compounding
designated
hydraulic cement
water
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.)
Pending
Application number
DE2312261A
Other languages
German (de)
Inventor
Friedrich-Wilhelm Broeker
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.)
BROEKER FRIEDRICH WILHELM DIPL
Original Assignee
BROEKER FRIEDRICH WILHELM DIPL
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 BROEKER FRIEDRICH WILHELM DIPL filed Critical BROEKER FRIEDRICH WILHELM DIPL
Priority to DE2312261A priority Critical patent/DE2312261A1/en
Publication of DE2312261A1 publication Critical patent/DE2312261A1/en
Pending 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
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

Organic fibrous materials, e.g. wood chips, are subjected to extraction with hot water, whereby organic setting retardants are removed. This simple and inexpensive method permits utilisation of fibrous materials for the prodn. of cement-base structural materials.

Description

Verfahren zur Aufbereitung organischer Materialien mit zementg g erhärtungsstörenden Substanzen Die Erfindung betrifft ein Verfahren zur Aufbereitung organischer, zementerhärtungsstörende Substanzen enthaltender Fasermaterialien mit dem Zweck, dieses Material als Zuschlag für die Herstellung von anorganisch hydraulisch gebundenen Leichtbaustoffen geeignet zu machen.Process for the preparation of organic materials with cement-disrupting hardening Substances The invention relates to a method for the preparation of organic substances which interfere with cement setting Fiber materials containing substances with the purpose of using this material as an aggregate suitable for the production of inorganically hydraulically bound lightweight building materials close.

Es ist bekannt, daß bestimmte Inhaltsstoffe im Holz und in ligno -cellulosehaltigen landwirtschaftlichen Abfällen wie beispielsweise Stroh und Bagasse die Erhärtung von anorganischen Bindemitteln, beispielsweise Zement, stören bzw. verhindern.It is known that certain ingredients in wood and in lignocellulose-containing agricultural waste such as straw and bagasse is hardening of inorganic binders, for example cement, interfere or prevent.

Bei dieses Stoffen handelt es sich um wasserlösliche Kohlenhydrate und Phenole sowie um wasserunlösliche Verbindungen, die unter alkalischem Einfluß wasserlöslich werden (SANDERMANN u. KOHLER 1964). Es sind nun Verfahren bekannt, die die erhärtungsstörende Wirkung der Inhibitoren durch Umhüllung der organischen Faser mit beispielsweise Zement zu verhindern versuchen. Es sind auch Verfahren bekannt, die zur Unschädlichmachung der Inhibitoren die organischen Fasern einer Vorbehandlung - Mineralisierung -mit beispielsweise Calciumchlorid vorsehen (DT-Patent 915 317, DT-Auslegeschrift i 696 395).These substances are water-soluble carbohydrates and phenols as well as water-insoluble compounds that are under alkaline influence become water-soluble (SANDERMANN and KOHLER 1964). Methods are now known the disruptive hardening effect of the inhibitors by enveloping the organic Try to prevent fiber with cement, for example. There are procedures too known to render the inhibitors harmless, the organic fibers of a Provide pretreatment - mineralization - with, for example, calcium chloride (DT patent 915 317, DT-Auslegeschrift i 696 395).

Versuche zeigten jedoch, daß bei der Herstellung zementgebundener Werkstoffe trotz der Faservorbehandlung erneut Erhärtungsstörungen auftraten.Experiments showed, however, that in the production of cement-bound Materials, despite the fiber pretreatment, hardening faults reappeared.

Die Aufgabe der Erfindung ist es nun, durch ein geeignetes Verfahren die löslichen erhärtungsstörenden Stoffe auf einfache Weise aus den Fasern zu entfernen.The object of the invention is now, through a suitable method to remove the soluble substances which interfere with setting from the fibers in a simple manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Fasermaterial mit Wasser, dessen Temperaturen bis zum Siedepunkt reichen, behandelt wird, so daß die Inhibitoren aus dem Fasermaterial gelöst bzw. die Konzentration der löslichen Stoffe verringert wird. Durch geeignete Verfahren, beispielsweise Filter, werden die gelösten Stoffe aus dem Wasser ausgefällt, so daß das Wasser mehrmals in beispielsweise einer Gegenstromanlage benutzt werden kann. Das noch warme Fasermaterial kann nach einer eventuellen Vorbehandlung mit Chemikalien, die bereits im Vorbehandlungs-Wasser sein können, sofort mit dem anorganischen Bindemittel vermischt werden, was die Erhärtung beschleunigt.This object is achieved according to the invention in that the fiber material is treated with water, the temperatures of which reach up to the boiling point, so that the inhibitors are dissolved from the fiber material or the concentration of the soluble ones Substances is reduced. Using suitable processes, e.g. filters, will the solutes precipitated from the water, so that the water several times in for example a countercurrent system can be used. The still warm fiber material can after any pretreatment with chemicals that are already in the pretreatment water can be immediately mixed with the inorganic binder, what the Hardening accelerates.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, lösliche Inhibitoren aus Fasermaterialien auf einfache Weise mit Wasser ohne teure Chemikalien zu entfernen, so daß diese Materialien für die Herstellung von anorganisch gebundenen Werkstoffen verwendet werden können.The advantages that can be achieved with the invention are, in particular, soluble inhibitors from fiber materials easily with water without expensive To remove chemicals, so that these materials for the manufacture of inorganic bonded materials can be used.

Beispielsweise ist nach SANDERMANN u. KOHLER die Bestimmung der Hydratationstemperatur von erhärtenden Späne-Zement-Gemischen ein ausgezeichnetes Verfahren, um die Erhärtungsstörung zu erfassen.For example, according to SANDERMANN and KOHLER, the determination of the hydration temperature is of hardening chip-cement mixtures is an excellent method to counteract the hardening disturbance capture.

marx. Hydra- Zeit bis zum Faktor I nach tationstem- Erreichen der WEATHERAX u. marx. Hydra- time to factor I after tationstem- reaching the WEATHERAX u.

peratur max. Hydrata- TAREOW (1967) t ionst emperatur C Stunden PZ 450 47 14,6-Makore (Dumoria heckelti HUTCH. u. DALZ) ' 30 47,0 223, Q2 Makore, 10 Min. mit 90 C heißem Wasser behandelt 45,3 16,5 i3,4 Wie aus der Tabelle ersichtlich, sind beispielsweise bei Makore, das nach SANDERMANN u. KOHLER zur Herstellung zementgebundener Holzwerkstoffe nicht geeignet ist, bereits nach zehnminütiger Heißwasserbehandlung bei 90 0C die Inhibitoren so weit entfernt, daß dieses Holz nun für die Herstellung zementgebundener Holzwerkstoffe geeignet ist. temperature max.hydrata- TAREOW (1967) t ionst temperature C hours PZ 450 47 14.6-Makore (Dumoria heckelti HUTCH. And DALZ) '30 47.0 223, Q2 Makore, 10 Min. Treated with 90 C hot water 45.3 16.5 i3.4 As can be seen from the table, are for example at Makore, that according to SANDERMANN and KOHLER for the production of cement-bound Wood-based panels are not suitable after ten minutes of hot water treatment at 90 ° C. the inhibitors are so far removed that this wood is now ready for production cement-bound wood-based materials is suitable.

Claims (1)

Patentanspruch:Claim: 1. Verfahren zur Aufbereitung organischer, zementerhärtungsstören de Substanzen enthaltender Fasermaterialien, dadurch gekennzeichnet, daß das Fasermaterial mit Wasser, dessen Temperaturen bis zum Siedepunkt reichen, behandelt wird.1. Process for the preparation of organic, cement hardening disturbances de fiber materials containing substances, characterized in that the fiber material is treated with water at temperatures up to the boiling point. Verfahren nach 1 dadurch gekennzeichnet, daß die löslichen Stoffe aus dem Wasser mit geeigneten Verfahren ausgefällt werden. Method according to 1, characterized in that the soluble substances precipitated from the water using suitable methods. Verfahren nach 1 dadurch gekennzeichnet, daß die warmen Fasermaterialien mit den hydraulischen Bindemitteln vermischt werden Literaturangabe SANDERMANN u. KOHLER Holzforschung 18 (1964) 53-59 WEATHERWAX u. TARKOW Forest Prod. Journal 17 (1967) 30-32 DT-Patent 915 317 DT-Auslegeschrift 1 696 395 Method according to 1, characterized in that the warm fiber materials are mixed with the hydraulic binders, reference SANDERMANN u. KOHLER Holzforschung 18 (1964) 53-59 WEATHERWAX and TARKOW Forest Prod. Journal 17 (1967) 30-32 DT Patent 915 317 DT Auslegeschrift 1,696,395
DE2312261A 1973-03-12 1973-03-12 Extracting setting retardants from fibrous materials - designated for compounding with hydraulic cement to produce structural materials Pending DE2312261A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2312261A DE2312261A1 (en) 1973-03-12 1973-03-12 Extracting setting retardants from fibrous materials - designated for compounding with hydraulic cement to produce structural materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2312261A DE2312261A1 (en) 1973-03-12 1973-03-12 Extracting setting retardants from fibrous materials - designated for compounding with hydraulic cement to produce structural materials

Publications (1)

Publication Number Publication Date
DE2312261A1 true DE2312261A1 (en) 1974-09-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252021A1 (en) * 1986-06-19 1988-01-07 M3EMME TRE CORKS S.n.c. di MANCA Francesco & F.lli Process for the production of light-weight heat and sound insulating products, and products obtained by this process
FR2669020A1 (en) * 1990-11-13 1992-05-15 Ascher Gerard Process for the manufacture of fibre-filled cellular composite mortar and material obtained by this process
WO1999043908A1 (en) * 1998-02-25 1999-09-02 Johan Human Method for the manufacture of a wall section for a main body of a house and the wall section itself

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252021A1 (en) * 1986-06-19 1988-01-07 M3EMME TRE CORKS S.n.c. di MANCA Francesco & F.lli Process for the production of light-weight heat and sound insulating products, and products obtained by this process
FR2669020A1 (en) * 1990-11-13 1992-05-15 Ascher Gerard Process for the manufacture of fibre-filled cellular composite mortar and material obtained by this process
WO1999043908A1 (en) * 1998-02-25 1999-09-02 Johan Human Method for the manufacture of a wall section for a main body of a house and the wall section itself

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