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1. (AU1991090349) Lightweight aggregate

Office : Australia
Application Number: 90349/91 Application Date: 05.12.1991
Publication Number: 1991090349 Publication Date: 09.11.1995
Publication Kind : A
Prior PCT appl.: Application Number:GB1991002157 ; Publication Number: Click to see the data
IPC:
C04B 16/10
C04B 18/02
C04B 28/08
C04B 38/08
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
16
Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
04
Macromolecular compounds
08
porous, e.g. expanded polystyrene beads
10
Treatment for enhancing the mixability with the mortar
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
18
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
02
Agglomerated materials
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28
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
02
containing hydraulic cements other than calcium sulfates
08
Slag cements
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
38
Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
08
by adding porous substances
CPC:
C04B 18/027
Y02W 30/92
Applicants: National Power plc
Inventors: Walker, Bryan James
Agents: Spruson & Ferguson
Priority Data: 9026682 07.12.1990 GB
Title: (EN) Lightweight aggregate
Abstract:
(EN) The present invention relates to a lightweight aggregate in the form of pellets or granules and, in particular to a lightweight aggregate in the form of pellets or granules for use in the building industry. The present invention provides a method for forming a lightweight aggregate comprising mixing together from 80 % to 99 % by weight of pulverised fuel ash, from 1 % to 20 % by weight of cement and an amount of polystyrene beads having a particle size of less than 2.5 millimetres, such that the volume of polystyrene beads is from 15 % to 80 % of the total volume of the final mixture to form a pelletisable mix, forming the mix into pellets having a diameter of less than 15 millimetres and curing the pellets in a moist atmosphere at a temperature below the vapourising temperature of any solvent within the polystyrene beads.
Also published as:
EP0560837ES2089487JPH06503061CA2097699DE000069119606DK0560837
WO/1992/010438