GB1348054A – Artificial roadstones
– Google Patents
GB1348054A – Artificial roadstones
– Google Patents
Artificial roadstones
Info
Publication number
GB1348054A
GB1348054A
GB1129171A
GB1348054DA
GB1348054A
GB 1348054 A
GB1348054 A
GB 1348054A
GB 1129171 A
GB1129171 A
GB 1129171A
GB 1348054D A
GB1348054D A
GB 1348054DA
GB 1348054 A
GB1348054 A
GB 1348054A
Authority
GB
United Kingdom
Prior art keywords
extrusion
extruded
bauxite
moisture content
surface irregularities
Prior art date
1971-04-26
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
GB1129171A
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.)
Associated Portland Cement Manufacturers Ltd
Original Assignee
Associated Portland Cement Manufacturers Ltd
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.)
1971-04-26
Filing date
1972-07-26
Publication date
1974-03-13
1972-07-26
Application filed by Associated Portland Cement Manufacturers Ltd
filed
Critical
Associated Portland Cement Manufacturers Ltd
1974-03-13
Publication of GB1348054A
publication
Critical
patent/GB1348054A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B28—WORKING CEMENT, CLAY, OR STONE
B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
B28B3/26—Extrusion dies
B—PERFORMING OPERATIONS; TRANSPORTING
B28—WORKING CEMENT, CLAY, OR STONE
B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B1/00—Producing shaped prefabricated articles from the material
B28B1/004—Devices for shaping artificial aggregates from ceramic mixtures or from mixtures containing hydraulic binder
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
C04B18/023—Fired or melted materials
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
C04B33/00—Clay-wares
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
C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
E—FIXED CONSTRUCTIONS
E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
E01C7/00—Coherent pavings made in situ
E01C7/08—Coherent pavings made in situ made of road-metal and binders
E01C7/085—Aggregate or filler materials therefor; Coloured reflecting or luminescent additives therefor
Abstract
1348054 Extruded roadstones ASSOCIATED PORTLAND CEMENT MFRS Ltd 26 July 1972 [26 April 1971] 11291/71 Heading B5A A bauxite roadstone having a high resistance to polishing and a good abrasion resistance, is produced by ram extruding a moist plastic mass of particulate bauxite at a moisture content and extrusion rate which results in disruption of the extruded surface, to produce surface irregularities, which are retained during sintering of the extrudate and subsequent breaking up into the roadstone. The extrudate may be of circular, rectangular or square section, and the surface disruption is assisted by a low ratio of extrusion orifice length to depth i.e. 1/16 : 1 and by a sharp edge at the entry to the orifice. The Fig. denotes plots of extrusion pressure (P) and shear rates (R), with the curves C-K being respectively for higher water content, the desired surface irregularities being in the range between curves A and C, and ranges to the left of curve C representing brittle fracture upon extrusion at low moisture content. A table is given relating the particle size distribution of siliceous bauxite and its moisture content, and its extrusion pressure and shear rate, to the degree of surface irregularities obtained with a specific die. The examples relate to the measurements of the polishing and abrasion resistance of extrusion at specified particles size distributions comprising; (1) ferruginous bauxite with 7À5% Blue London Clay as plasticizer; (2) ferruginous bauxite extruded, with water, as a block which is crushed subsequent to sintering, in comparison with extrusion by the invention using 1% neutralized ammonium alginate as plasticizer; (3) siliceous bauxite ground and extruded, using 0À1-0À2% carboxymethyl cellulose, or neutralized sodium alginate for coarser grades extruded, compared with the same materials conventionally extruded. The extrudates may incorporate 1 % of P 2 O 5 in aqueous solution.
GB1129171A
1971-04-26
1972-07-26
Artificial roadstones
Expired
GB1348054A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB1129171
1971-04-26
Publications (1)
Publication Number
Publication Date
GB1348054A
true
GB1348054A
(en)
1974-03-13
Family
ID=9983533
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1129171A
Expired
GB1348054A
(en)
1971-04-26
1972-07-26
Artificial roadstones
Country Status (2)
Country
Link
US
(1)
US3860681A
(en)
GB
(1)
GB1348054A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN104816374B
(en)
*
2015-04-07
2017-12-19
湖北大红马建材发展有限公司
A kind of production technology of artificial stone material for decoration use
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1920773A
(en)
*
1930-07-03
1933-08-01
Patent & Licensing Corp
Granule and method of producing same
US2694245A
(en)
*
1950-11-28
1954-11-16
Bendix Aviat Corp
Molding of ceramics
US3202746A
(en)
*
1961-12-08
1965-08-24
Structural Clay Products Inst
Method and apparatus for manufacturing small clay cylinders
1972
1972-07-26
GB
GB1129171A
patent/GB1348054A/en
not_active
Expired
1972-07-31
US
US276669A
patent/US3860681A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
US3860681A
(en)
1975-01-14
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Legal Events
Date
Code
Title
Description
1974-07-24
PS
Patent sealed [section 19, patents act 1949]
1989-03-15
PCNP
Patent ceased through non-payment of renewal fee
