GB1376244A - Method and apparatus for the manufacture of concrete products - Google Patents

Method and apparatus for the manufacture of concrete products

Info

Publication number
GB1376244A
GB1376244A GB135672A GB135672A GB1376244A GB 1376244 A GB1376244 A GB 1376244A GB 135672 A GB135672 A GB 135672A GB 135672 A GB135672 A GB 135672A GB 1376244 A GB1376244 A GB 1376244A
Authority
GB
United Kingdom
Prior art keywords
weight
panel
mixture
water
mould
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.)
Expired
Application number
GB135672A
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.)
US TERRAZZO PANELS Inc
Original Assignee
US TERRAZZO PANELS Inc
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 US TERRAZZO PANELS Inc filed Critical US TERRAZZO PANELS Inc
Publication of GB1376244A publication Critical patent/GB1376244A/en
Expired 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2664—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements

Landscapes

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

Abstract

1376244 Fast-curing concrete panels U S TERRAZZO PANELS Inc 12 Jan 1972 [14 Jan 1971] 1356/72 Heading B5A [Also in Division C1] Concrete articles such as terrazzo panels are made by compressing in a mould a mixture comprising 20-25% by weight of hydraulic cement, 60-75% by weight of aggregate, 1-2% by weight of a vinyl acetate-dibutyl maleate copolymer and 5-10% by weight of water. The compressed mixture is removed from the mould and then cured in an atmosphere of CO 2 gas so that it undergoes an exothermic temperature rise of at least 20‹ F. in less than 5 minutes. Portland cement is used with aggregates of sand, gravel, marble or granite dust or chips, crushed limestone, quartz crystal dust, seashells, broken and coloured glass, and crushed concrete, mortar or bricks. The aggregate has mixed fine and coarse particles to give less than 1-4% volume of voids. The water includes dies or pigments. The vinyl acetatedibutyl maleate copolymer comprises 77% by weight of vinyl acetate and 23% by weight of dibutyl maleate in an emulsion form with polyvinyl alcohol as the colloid. As described, the dry components are mixed, sprayed with a mixture of copolymer and water, and blended in a double screw blender 10. The mixture is screwfed to a high pressure hydraulic press 14, fed into a mould 18, and compressed at more than 1 million 1b./sq. yd. to form a panel. The panel 22 is ejected by a plunger 20 on to an open mesh conveyer 30, and led into a CO 2 chamber having flexible seals 26, 28. The CO 2 pressure is 1-80 p.s.i.g., and the chamber height 1¢-4 times the thickness of the panel. After about 10 minutes, the cured panel 22 is ground and polished using diamond wheels and a water coolant. Several examples are described.
GB135672A 1971-01-14 1972-01-12 Method and apparatus for the manufacture of concrete products Expired GB1376244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10636471A 1971-01-14 1971-01-14

Publications (1)

Publication Number Publication Date
GB1376244A true GB1376244A (en) 1974-12-04

Family

ID=22311005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB135672A Expired GB1376244A (en) 1971-01-14 1972-01-12 Method and apparatus for the manufacture of concrete products

Country Status (3)

Country Link
DE (1) DE2201501A1 (en)
GB (1) GB1376244A (en)
IT (1) IT948863B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441999A (en) * 2006-05-23 2008-03-26 Brand & Rae Ltd A concrete building block containing crushed glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441999A (en) * 2006-05-23 2008-03-26 Brand & Rae Ltd A concrete building block containing crushed glass

Also Published As

Publication number Publication date
IT948863B (en) 1973-06-11
DE2201501A1 (en) 1972-08-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee