EP0360858A1 - Agregat leger pour beton - Google Patents

Agregat leger pour beton

Info

Publication number
EP0360858A1
EP0360858A1 EP89903995A EP89903995A EP0360858A1 EP 0360858 A1 EP0360858 A1 EP 0360858A1 EP 89903995 A EP89903995 A EP 89903995A EP 89903995 A EP89903995 A EP 89903995A EP 0360858 A1 EP0360858 A1 EP 0360858A1
Authority
EP
European Patent Office
Prior art keywords
cement
concrete
grains
foam
aggregate
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.)
Ceased
Application number
EP89903995A
Other languages
German (de)
English (en)
Inventor
Joachim Dunkel
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 EP0360858A1 publication Critical patent/EP0360858A1/fr
Ceased legal-status Critical Current

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
    • 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
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • 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
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/027—Lightweight materials

Definitions

  • the invention relates to a method for producing a porous light aggregate as well as a porous light aggregate itself and lightweight concrete structures or elements which are manufactured using the aforementioned light aggregate.
  • porous light aggregates for lightweight concrete, e.g. sintered fly ash, hut pumice, granulated slag, broken foam lava and the like.
  • porous, absorbent substances such as vermiculite or perlite, as well as foam glass grains (DE-GM 19 58 264) that are not absorbent Easy to use.
  • DE-GM 71 30 969 coarse-grained natural pumice or expanded clay with gypsum as a binder are to be processed into lightweight building boards.
  • Expanded clay is currently also being used to a greater extent as a lightweight aggregate for lightweight concrete. It is made from natural clay by blowing and burning and mostly has a spherical grain shape and a fine pore structure.
  • the aforementioned light supplements have the disadvantage that they are either relatively expensive and / or have to be specially produced in places where the basic material is available in sufficient quantities, or that they are produced as waste materials in the manufacture of industrial products or that they are first obtained as relatively rare natural products, sometimes with considerable effort, and then mostly have to be procured on long transport routes. Such conditions stand in the way of poorly developed locations or locations far away from industrial areas, for example in underdeveloped countries.
  • the invention has for its object to provide a light impact with a grain shape similar to natural gravel, which is easy, simple and economical to produce anywhere, without the need for a complex and extensive machine park and which all to him demands with regard to good thermal insulation as well as sufficient strength and durability.
  • the invention thus relates on the one hand on the spezi ⁇ fishing porous Textilzusc was on the other hand to a method for the production thereof, but how or -ele duck, takes concrete structure oncht ⁇ for as concrete aggregate of erf ⁇ ndungsgema 'SSE Le chtzusc was used.
  • the light aggregate according to the invention can be obtained in a very simple manner as follows: By mixing in an aqueous air foam produced with the aid of a foam generator from a foam former solution into a cement slurry (cement paste), a foam cement with a bulk density of produced about 200 to 600 kg / m.
  • the fresh foam cement is then placed in molds or in an elongated, trough-shaped bed, where it solidifies and hardens due to the hydration of the cement.
  • the mass produced in the manner mentioned with a very high pore content is then suitably comminuted by cutting or breaking or the like so far that the largest grain is about 25 mm.
  • the entire material resulting from the disintegration can be used as a supplement for the production of light concrete building blocks with good thermal insulation.
  • An excess of fine material with a grain size of 0 to about 2 mm is advantageously sieved and separated. It can be used for the production of mortar, e.g. can be used as insulating insulating plaster or as grout for filling the joints between lightweight concrete structures or elements.
  • the lightweight aggregate grains produced in the manner described above are suitable grain compositions with cement, mixing water and optionally further light or normal aggregates and optionally mixed with concrete admixtures and / or concrete admixtures. This is done in a concrete mixer, as usual and conveniently.
  • the ready-to-use mixture is filled at the place of use as light concrete in a formwork, or it is introduced into molds for the production of lightweight precast elements or elements, such as hollow blocks, solid blocks, slabs and the like.
  • the light aggregates obtained according to the invention meet the strength requirements for the production of highly heat-insulating lightweight concrete.
  • this can be achieved by coating the grains with one, two or possibly three layers of cement stone. This is done in the simplest way either by covering the grains with cement glue or by dusting the sufficiently moist or moistened grains with cement or by rolling them in cement so as to produce a solid shell which increases the grain strength by hardening the cement.
  • the lightweight aggregate materials are used which, as far as cement and water are concerned, are available at every construction site anyway and, as far as it is a foam liner or other additives, can be easily and inexpensively transported anywhere. because they are only needed in very small quantities.
  • aggregate-light lightweight concrete and lightweight concrete with a closed structure can be produced with dry raw densities of approximately 500 to 1800 kg / m, these concretes having favorable thermal insulation properties, particularly in the low bulk density range. In addition, they are non-flammable and weatherproof enough.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

Selon un procédé de fabrication d'un agrégat léger poreux en matériaux minéraux moussés, on mélange des quantités prédéterminées de ciment, d'eau et de la mousse d'un agent moussant de façon à obtenir une masse qui présente une fois durcie une masse volumique apparente sèche comprise entre 200 et 600 kg/m3 environ. Afin de former des corps moulés en forme de panneaux ou des blocs ou similaires, on introduit le mélange dans des moules et, une fois les corps moulés durcis, on les triture afin d'obtenir des granulés dont la grosseur des grains s'élève à 25 mm environ au maximum.
EP89903995A 1988-03-29 1989-03-29 Agregat leger pour beton Ceased EP0360858A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810683 1988-03-29
DE3810683A DE3810683A1 (de) 1988-03-29 1988-03-29 Leichtbetonbaukoerper mit einem leichtzuschlag aus schaumzement und verfahren zu seiner herstellung

Publications (1)

Publication Number Publication Date
EP0360858A1 true EP0360858A1 (fr) 1990-04-04

Family

ID=6350985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89903995A Ceased EP0360858A1 (fr) 1988-03-29 1989-03-29 Agregat leger pour beton

Country Status (5)

Country Link
EP (1) EP0360858A1 (fr)
KR (2) KR930009896B1 (fr)
AU (1) AU3341989A (fr)
DE (2) DE3810683A1 (fr)
WO (1) WO1989009195A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442810A1 (de) * 1994-12-01 1996-06-05 Cerasiv Gmbh Granulat zur Herstellung hochporöser Formkörper
AT412210B (de) * 2003-05-27 2004-11-25 Kranzinger Norbert Verfahren zum herstellen eines porösen granulats
KR100830550B1 (ko) * 2007-04-06 2008-05-22 이건테크놀로지 주식회사 경량 기포 콘크리트
BE1018894A5 (nl) * 2009-10-29 2011-10-04 Hooghe Johan D Het gebruik gerecycleerd cellenbeton in chape.
US20200087215A1 (en) * 2018-09-19 2020-03-19 Steven Patrick Miles Lighter weight composition material with low thermal conductivity
CN115611544A (zh) * 2021-07-16 2023-01-17 协兴建筑科技有限公司 无机膨化珍珠岩轻质颗粒及其制备工艺与应用

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE311856B (fr) * 1967-12-13 1969-06-23 Ytong Ab
DE2016677A1 (en) * 1970-04-08 1971-10-28 Baustoffwerk Castrop-Rauxel GmbH & Co KG, 5603 Wülfrath Insulating mortar contg granulated aerated cement aggregate
DE2524147B2 (de) * 1975-05-30 1978-10-12 Ytong Ag, 8000 Muenchen Verfahren zum Herstellen von Leichtbauplatten aus einem porösen Zuschlagstoff und Gips
DD130782B1 (de) * 1977-03-02 1981-01-28 Siegfried Bowens Masse zur isolierung gegen hohe temperaturen
DE3537265A1 (de) * 1985-10-19 1987-04-23 Hebel Alzenau Gmbh & Co Verfahren zur herstellung von dampfdruckgehaertetem porenbeton, insbesondere gasbeton
DE3631221C1 (en) * 1986-09-13 1988-02-11 Krause Heinz Josef Process for producing granules or shaped blocks
DE3631220A1 (de) * 1986-09-13 1988-03-24 Heinz Josef Krause Baustein, bestehend aus einem silikatbildenden stoff und einem hydraulischen bindemittel, wie z.b. kalk oder zement
DE3704014A1 (de) * 1987-02-10 1987-10-08 Gerhard Fabritz Verfahren zur herstellung von schwer entflammbarem leichtbeton

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8909195A1 *

Also Published As

Publication number Publication date
WO1989009195A1 (fr) 1989-10-05
DE3810683A1 (de) 1989-10-12
KR900700408A (ko) 1990-08-13
DE8816997U1 (fr) 1992-01-23
AU3341989A (en) 1989-10-16
KR930009896B1 (ko) 1993-10-13

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Legal Events

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