WO1989000153A1 - Method for producing of concrete with variable density - Google Patents

Method for producing of concrete with variable density Download PDF

Info

Publication number
WO1989000153A1
WO1989000153A1 PCT/SE1988/000369 SE8800369W WO8900153A1 WO 1989000153 A1 WO1989000153 A1 WO 1989000153A1 SE 8800369 W SE8800369 W SE 8800369W WO 8900153 A1 WO8900153 A1 WO 8900153A1
Authority
WO
WIPO (PCT)
Prior art keywords
concrete
density
cement
agent
producing
Prior art date
Application number
PCT/SE1988/000369
Other languages
English (en)
French (fr)
Inventor
Ingemar Johansson
Kjell Svedman
Original Assignee
Danes Verkstäder Ab
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 Danes Verkstäder Ab filed Critical Danes Verkstäder Ab
Priority to AT88906208T priority Critical patent/ATE84292T1/de
Priority to DE8888906208T priority patent/DE3877362T2/de
Publication of WO1989000153A1 publication Critical patent/WO1989000153A1/en
Priority to NO895224A priority patent/NO176601C/no

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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam

Definitions

  • the present invention concerns a method for pro ⁇ ducing concrete with variable density, particularly with- in the range of 800-2000 kg/m 3 , where also the compres ⁇ sion strength can be kept high, e.g. more than 12 MPa at a density of 1600 kg/m 3 .
  • the capacity can be made bigger for a stationary plant.
  • the ballast is constituted by sand, gravel and stone and the density of the stabilized concrete normally is about 2300 kg/m 3 .
  • the strength re ⁇ quirements can vary.
  • the test method for the compression strength has been standardized and is carried out in the way that a cube is moulded with a side of 150 mm with certain requirements of side-parallelism and angel-accu ⁇ racy.
  • the cube After hardening of the cube at a room temperature of 20°C a varying number of days, in most cases 8 and 28 days, the cube will be tested by pressing between flat surfaces and the highest load is registrated before the cube starts cracking.
  • a value of the compression strength around 60 MPa can be achieved under certain circumstan ⁇ ces, but maximum values of about 40 MPa are most common.
  • the con ⁇ crete price can be cheapened particularly by increasing the rate of weight between participating water and cement in the concrete mass, the so called water cement factor. This is used to be indicated vet.
  • Blowing air into the liquid concrete mass to get air porousities in the concrete occurs, making the con ⁇ crete less affected by frost, among others in bridges and outdoor-balconies. Injection of air also is made to lower the density. However the compression strength will be dramatically lowered and the porousities are so irregu ⁇ larly spread that already at a density of 2000 kg/m 3 the method is debatable.
  • a concrete with very good strength characteristics also in the range 800-2000 kg/m 3 can be produced by adding a porousity agent made of water, cement and a foaming agent, to e.g. a conventionally produced liquid concrete mass, mixed up by cement, ballast and water, e.g. in a stationary con ⁇ crete station, and have these to mix well together.
  • a porousity agent made of water, cement and a foaming agent
  • a normal concrete mass was produced in a labo ⁇ ratory scale in a simple mixer, aiming for a density of about 2200 kg/m 3 and a compression strength after 28 days hardening of about 0 MPa.
  • a smaller amount of porousity agent was produced.
  • vet 48 was obtained.
  • To 6 litre of the concrete mass 0,6 litre porousity agent was added during stirring. Test cubes was moulded from the concrete mass as well as from the latter mixture with the porousity agent jumbled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
PCT/SE1988/000369 1987-07-08 1988-07-05 Method for producing of concrete with variable density WO1989000153A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT88906208T ATE84292T1 (de) 1987-07-08 1988-07-05 Verfahren zur herstellung von beton wechselnder dichte.
DE8888906208T DE3877362T2 (de) 1987-07-08 1988-07-05 Verfahren zur herstellung von beton wechselnder dichte.
NO895224A NO176601C (no) 1987-07-08 1989-12-22 Fremgangsmåte for fremstilling av betong med varierende densitet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702806-4 1987-07-08
SE8702806A SE460120B (sv) 1987-07-08 1987-07-08 Saett att tillverka betong med varierande densitet

Publications (1)

Publication Number Publication Date
WO1989000153A1 true WO1989000153A1 (en) 1989-01-12

Family

ID=20369090

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000369 WO1989000153A1 (en) 1987-07-08 1988-07-05 Method for producing of concrete with variable density

Country Status (7)

Country Link
US (1) US5160540A (sv)
EP (1) EP0380493B1 (sv)
AT (1) ATE84292T1 (sv)
DE (1) DE3877362T2 (sv)
NO (1) NO176601C (sv)
SE (1) SE460120B (sv)
WO (1) WO1989000153A1 (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998057906A1 (en) * 1997-06-17 1998-12-23 Stable Air Inc Foam, foam/cement mixture and method for making air-entrained concrete
US5900191A (en) * 1997-01-14 1999-05-04 Stable Air, Inc. Foam producing apparatus and method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2570288Y2 (ja) * 1991-11-25 1998-05-06 古河電気工業株式会社 光ファイバ用被覆装置
IL114494A0 (en) * 1995-07-06 1995-11-27 Te Eni Moshe System and method for controlling concrete production
US6227039B1 (en) 1998-01-06 2001-05-08 Moshe Te'eni System and method for controlling concrete production
SE9800082D0 (sv) * 1998-01-16 1998-01-16 Akzo Nobel Surface Chem Sätt vid injektering av betong
US7621995B2 (en) * 2005-09-09 2009-11-24 Jack B. Parson Companies Concrete mixtures having high flowability
US8167997B2 (en) 2005-09-09 2012-05-01 Jack B. Parson Companies Concrete mixtures having stabilized foam admixture
US20070056479A1 (en) * 2005-09-09 2007-03-15 Gray Lonnie J Concrete mixtures incorporating high carbon pozzolans and foam admixtures
US7670426B2 (en) * 2005-09-09 2010-03-02 Jack B. Parson Companies Concrete mixtures having aqueous foam admixtures

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513430A1 (de) * 1974-04-03 1975-10-09 Igeco Pontello Prefab Leichter, zellenfoermiger beton

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285701A (en) * 1968-08-23 1972-08-16 Laing & Son Ltd John Improvements in low density concretes and their manufacture
US3758319A (en) * 1970-10-22 1973-09-11 Stanley Works Method for forming foamed concrete structures
US3804058A (en) * 1972-05-01 1974-04-16 Mobil Oil Corp Process of treating a well using a lightweight cement
US3979217A (en) * 1973-06-01 1976-09-07 Halliburton Company Lightweight cellular cement compositions and methods of casting the same
DE2345692B1 (de) * 1973-09-11 1975-03-06 Wasagchemie Ag Konstruktionsleichtbeton besonders geringer Dichte
GB2095227B (en) * 1981-03-24 1985-05-01 Cempol Sales Making lightweight concrete
IT1218465B (it) * 1985-02-08 1990-04-19 Chiffre Chiara De Procedimento per calcestruzzo aerato

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513430A1 (de) * 1974-04-03 1975-10-09 Igeco Pontello Prefab Leichter, zellenfoermiger beton

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5900191A (en) * 1997-01-14 1999-05-04 Stable Air, Inc. Foam producing apparatus and method
US6046255A (en) * 1997-01-14 2000-04-04 Paul T. Gray Foam and foam/cement mixture
WO1998057906A1 (en) * 1997-06-17 1998-12-23 Stable Air Inc Foam, foam/cement mixture and method for making air-entrained concrete

Also Published As

Publication number Publication date
SE460120B (sv) 1989-09-11
EP0380493B1 (en) 1993-01-07
SE8702806L (sv) 1989-01-09
DE3877362T2 (de) 1993-05-06
EP0380493A1 (en) 1990-08-08
NO176601C (no) 1995-05-03
NO176601B (no) 1995-01-23
US5160540A (en) 1992-11-03
SE8702806D0 (sv) 1987-07-08
ATE84292T1 (de) 1993-01-15
NO895224L (no) 1989-12-22
DE3877362D1 (de) 1993-02-18
NO895224D0 (no) 1989-12-22

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