Shuttering for Concrete Slab

• US 20150048543A1
• Filed: 02/22/2013
• Published: 02/19/2015
• Est. Priority Date: 02/28/2012
• Status: Abandoned Application

• Current Assignee: Permaban Limited
• Original Assignee: Permaban Limited
• Inventors: Keen, Andrew
• Application Number:
  US14/381,493
• Publication Number:
  US 20150048543A1
• Time in Patent Office: Days
• US Class Current: 264/219
• CPC Class Codes: E01C 19/502 Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes for forming individual elements E01C19/508; for grooves or like channels E01C23/021
• CPC Class Codes: E01C 19/504 adapted to, or provided with, means to maintain reinforcing or load transfer elements in a required position removable supports for positioning reinforcing or load transfer elements in general E01C23/045
• CPC Class Codes: E01C 19/508 Devices or arrangements for forming individual paving elements in situ, e.g. by sectioning a freshly-laid slab permanent forms therefor E01C9/001; imprinting freshly-laid paving to simulate stones E01C19/43; cutting sett paving E01C23/0906
• CPC Class Codes: E01C 2201/14 Puzzle-like connections
• CPC Class Codes: E01C 9/001 Paving elements formed in situ; Permanent shutterings therefor removable shutterings E01C19/502; moulding machines therefor E01C19/508; Inlays or reinforcements which divide the cast material in a great number of individual units reinforcement girders which do not break the cohesion of the covering material E01C11/16, E01C11/185
• CPC Class Codes: E04G 9/02 Forming boards or similar elements E04G9/08, E04G9/10 take precedence
• CPC Class Codes: E04G 9/10 with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air

Abstract

A method of laying concrete slabs comprising: providing shuttering having a regular wave shape along a side of a first slab to be cast at which side a second slab will subsequently be cast; casting the first slab; removing the regular-wave-shape shuttering; casting a second slab, whereby the slabs have inter-digitated protrusions of the regular wave shape along their adjoining sides.

Claims

1-14. -14. (canceled)

15. A method of laying concrete slabs comprising:

providing shuttering having a regular wave shape, when viewed from above and throughout the full depth of a slab to be lain, along a side of a first slab to be lain by casting at which side a second slab will subsequently be cast;

casting the first slab;

removing the regular-wave-shape shuttering;

casting a second slab,

whereby the slabs have inter-digitated protrusions of the regular wave shape to the full depth of the slab along their adjoining sides imparted by the shuttering.

16. A method of laying concrete slabs according to claim 15, whereby the regular wave shape of the shuttering has straight portions.

17. A method of laying concrete slabs according to claim 16, wherein the regular wave shape has portions which are one of a triangular shape, a trapezium shape or a square shape.

18. A method of laying concrete slabs according to claim 16, wherein the regular wave shape has rounded corners.

19. A method of laying concrete slabs according to claim 15, wherein the regular wave shape is tapered in its peak to peak extent with depth through the slabs.

20. A method of laying concrete slabs according to claim 15, wherein the shuttering is provided with dowels, the dowels extending from one slab, across the gap to the next slab.

21. A method of laying concrete slabs according to claim 20, wherein:

a. the shuttering is provided with housings;

b. prior to casting the first slab, dowels are installed in the housings; and

c. on removal of the shuttering from the first slab, the shuttering is drawn horizontally away from the wave shaped slab face.

22. A method of laying concrete slabs according to claim 20, wherein:

a. the shuttering is provided with projections;

b. prior to casting the first slab, plastic sleeves are fitted to the projections;

c. after casting the first slab and on removal of the shuttering, the plastic sleeves remain in place in the first slab;

d. after removal of the shuttering from the first slab and prior to casting the second slab, dowels are installed in the plastic sleeves, a portion of the dowels protruding from the plastic sleeves; and

e. on casting the second slab, the second slab is cast around the portions of the dowels protruding from the first slab.

23. A method of laying concrete slabs according to claim 22, wherein the sleeve carrying projections are removable from the shuttering, such that one of either of the shuttering or the projections may be removed from the first slab prior to removal of other one.

24. A method of laying concrete slabs according to claim 15 wherein the shuttering is provided with at least one corner abutment.

25. A method of laying concrete slabs according to claim 24, wherein corner abutments are provided between ends of two or more shuttering lengths, which are to intersect to form corners of the slabs to be cast.

26. A method of laying concrete slabs according to claim 24, wherein prior to casting the second slab, the corner abutment is removed.

27. A method of laying concrete slabs according to claim 24, wherein after the casting of the second slab the corner abutment is removed.

28. Concrete slab shuttering for use in the method of claim 15, the shuttering having a full-slab-depth, regular wave shape along its length.