GB2084561A

GB2084561A - Lightweight Concrete

Info

Publication number: GB2084561A
Application number: GB8030711A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1980-09-23
Filing date: 1980-09-23
Publication date: 1982-04-15

Abstract

An extremely lightweight concrete mixture comprises not less than 40% by volume of expanded polystyrene beads. There may be present aggregate e.g. sand and dolomite limestone, reinforcing agent e.g. polypropylene mesh and plasticiser.

Description

SPECIFICATION Floatcrete

Description A Revolutionary Type of Concrete 1. A very high insulation property 2. Has a high impact strength 3. It floats 4. Its one third the weight of normal mixes 5. Easily cut drilled or moulded 6. Water absorption over twelve months test less than 0.6% Analysis of Components Weight Volume Expanded polystyrene beads 4.7% 40% Polypropolene mesh 3.4% 4.5% Cement mortar 91.1% 55.5% Material density 0.7gms per cubic centimetre Analysis of Mortar Portland cement 47.5% Sand 20% Calcium carbonate 9.8% as CaCO3 Magnesium carbonate 1 3.4 % as MgCO3 Calcium carbonate/magnesium carbonate are present as aggregate as crushed dolomite limestone Ratio of Components Portland cement 1 1 Sand 0.4 0.3 Dolomite limestone 0.5 0.7 Mortar Mix Ratio Crushed dolomite and sand mixed at the ratio of 7 to 1 then cement mortar is made from equal volumes of Portland cement and the dolomite/sand mixture size and type of polypropolene mesh can be varied to suit individual requirements.

Claims 1. A concrete product of extremely lightweight, with a content of not less than 40% of Polystyrene beads by volume.

2. A concrete product as claimed in claim 1 which has a very high insulation property, high impact and cushion strength.

3. A concrete product as claimed in claims 1 and 2, for heating insulation.

4. A concrete product as claimed in claims 1 and 2 for refrigeration insulation.

5. A concrete product as claimed in claims 1 and 2 having a high degree of soundproofing.

6. A concrete product as claimed in claims 1 and 2 containing a high degree of buoyancy in the solid form.

7. A concrete product mixture of components by weight. 4.7% Polystyrene Beads. 3.4% Poiypropolene and 91.9% cement mortar.

8. A concrete product as claimed in claims 1, 2 and 7 with Dolomite Limestone as aggregate.

9. A concrete product as claimed in claims 1 to 7 containing the lightweight element, insulation, soundproofing and buoyancy.

10. A concrete product as claimed in claims 1 to 9 containing Polystyrene Beads.

11. A concrete product as claimed in claims 7, 8 and 9 and in any preceding claims.

12. A concrete product as claimed in claims 1,2, 6 and 9, effecting a high degree of buoyancy.

1 3. A concrete product as claimed in preceding claims, using Portland Cement as a bonding agent.

14. A concrete product as claimed in claims 1, 7, 8, 9 and 10, using this method of mix.

1 5. A concrete product as claimed in claims 1, 7 and 9, using Dolomite Limestone as aggregate.

1 6. A method of preparing and mixing a concrete which comprises of components claimed in preceding claims or equivalent component mixtures.

1 7. A concrete product as claimed in claims 1 to 10, absorbing less than 0.6% after twelve months immersion in water.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Floatcrete Description A Revolutionary Type of Concrete 1. A very high insulation property 2. Has a high impact strength 3. It floats 4. Its one third the weight of normal mixes 5. Easily cut drilled or moulded 6. Water absorption over twelve months test less than 0.6% Analysis of Components Weight Volume Expanded polystyrene beads 4.7% 40% Polypropolene mesh 3.4% 4.5% Cement mortar 91.1% 55.5% Material density 0.7gms per cubic centimetre Analysis of Mortar Portland cement 47.5% Sand 20% Calcium carbonate 9.8% as CaCO3 Magnesium carbonate 1 3.4 % as MgCO3 Calcium carbonate/magnesium carbonate are present as aggregate as crushed dolomite limestone Ratio of Components Portland cement 1 1 Sand 0.4 0.3 Dolomite limestone 0.5 0.7 Mortar Mix Ratio Crushed dolomite and sand mixed at the ratio of 7 to 1 then cement mortar is made from equal volumes of Portland cement and the dolomite/sand mixture size and type of polypropolene mesh can be varied to suit individual requirements. Claims

1. A concrete product of extremely lightweight, with a content of not less than 40% of Polystyrene beads by volume.

3. A concrete product as claimed in claims 1 and 2, for heating insulation.

1 8. A concrete product as claimed in preceding claims having a density of 0.7grms per cubic

centimetre.

19. A concrete product whenever mixed and prepared as in claims 1, 7, 8, 9 and 10.

20. A concrete product as claimed in claim 7, using Polypropolene as reinforcing or any substitute reinforcing.

21. A method of mixing liquid plastisizer to claims 1 to 1 5 for added working efficiency.

22. A method of substituting any aggregate for Dolomite Limestone.

23. A concrete product as claimed or prepared by a method as claimed in any of the hereinbefore claims mentioned with reference to any one of the preceding claims or examples.

23. A method of substituting bonding as claimed in claim 1 3.

24. A concrete product as claimed or prepared by a method as claimed in any of the hereinbefore claims mentioned, with reference to any one of the preceding claims or examples.

New Claims or Amendments to Claims filed on 12 May 1981.

Superseded Claims 1, 22, 23,

24.

New or Amended Claims:

1. A method for the making of a lightweight buoyant concrete, with self-supporting nonabsorbing insulative aggregates, containing pre-expanded polystyrene beads, which are infused into a limestone dolomite and cement mortar.

22. A method of substituting bonding as claimed in claim 13.