AU2009100759A4

AU2009100759A4 - Resurfacing of Paving

Info

Publication number: AU2009100759A4
Application number: AU2009100759A
Authority: AU
Inventors: Michael George David Gandy; John Charles William McKenzie; Jason Peter John Thompson
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-27
Filing date: 2009-08-04
Publication date: 2009-09-10
Anticipated expiration: 2017-08-04

Description

AUSTRALIA ORIGINAL COMPLETE SPECIFICATION INNOVATION PATENT Invention Title: "Resurfacing of Paving" Name of Applicants: Jason Peter John Thompson John Charles William McKenzie Michael George David Gandy Actual Inventors: Jason Peter John Thompson John Charles William McKenzie Michael George David Gandy Address for service: WRAYS Ground Floor, 56 Ord Street West Perth WA 6005 Attorney code: WR The following statement is a full description of this invention, including the best method of performing it known to me: -1- -2 "Resurfacing of Paving" Field of the Invention The present invention relates to the resurfacing of paving. A particular application relates to the resurfacing of concrete paved surfaces. 5 Background Art The following discussion of the background art is intended to facilitate an understanding of the present invention only. The discussion is not an acknowledgement or admission that any of the material referred to is or was part of the common general knowledge as at the priority date of the application. 10 Typically the paving of ground areas is effected by assembling formwork around the area to be paved, pouring concrete into the area defined by the formwork and allow the concrete to set and cure. When such paving becomes worn or cracked or damaged the conventional practice is to remove the previous paving and replace it. This is very time consuming and expensive in terms of labour, and the 15 equipment and materials required. An alternative solution is to paint the surface or cover it with a synthetic coating. Disclosure of the Invention Throughout this specification and claims, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be 20 understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers. Throughout this specification and claims, unless the context requires otherwise, the term "cementitious material" shall be taken as comprising a mixture of a Portland cement and a crushed aggregate mixed with water. 25 According to one aspect of the invention resides in a method for resurfacing a paved area comprising the steps of: cleaning the surface of the paved area; -3 applying an adhesive over the surface; applying a layer of a settable cementitious composition over the adhesive prior to the hardening of the adhesive; screeding the layer of cementitious material incorporating a n aggregate in 5 the form of crushed limestone to form a surface having the desired texture; and allowing cementitious material to set and cure. According to a preferred feature of the invention the adhesive is allowed to harden at least 12 hours to set and cure. According to a preferred feature of the 10 invention approximately 36 hours is allowed for the adhesive to set and cure . According to a preferred feature of the invention the thickness of the layer of adhesive is approximately 2 to 10mm.. According to a preferred feature of the invention the layer of cementitious material is of the order of at least 2 mm. 15 According to a preferred feature of the invention the method further comprises applying a sealer to the exposed surface of the cementitious material after it has set. According to a preferred feature of the invention the method further comprises polishing the exposed surface of the cementitious material after it has set. 20 According to a preferred feature of the invention, the adhesive is a polymeric adhesive. According to a preferred feature of the invention, the adhesive is a cement based adhesive. According to a preferred feature of the invention, the cementitious material 25 includes a coloured pigment, -4 According to a preferred feature of the invention, the method for manufacturing a construction element further comprises the steps of installing barriers over the surface intermediate of the sides of the area to define a plurality of separate regions. According to a preferred feature of the invention at least one of the 5 regions is filled with a cementitious material having a different colour to the other regions. According to preferred feature of the invention the texture of at least on region differs from the other regions.. According to a preferred feature of the invention, the barriers are formed by contoured strips of material adapted to define expansion joints between the 10 regions. According to a preferred feature of the invention, the barriers are formed by contoured sections having a flange which able to be fixed to the surface. According to a preferred feature of the invention the section has a T or L-shaped cross-section. 15 According to a preferred feature of the inventions the upper face of the barrier is exposed in the finished surface. According to a preferred feature of the invention the upper face is visually distinctive from the exposed face of the regions. According to a preferred feature of the invention the barrier includes an illumination means. According to a preferred feature of the invention the 20 illumination means comprises a plastic strip which incorporates a set of spaced LEDs and which are fixed to the barrier. According to another aspect of the invention resides in a surface obtained by the method in as described above. According to a preferred feature of the invention, the paved area is selected from 25 the group consisting of an indoor or outdoor floor, a driveway, a set of steps or a roof. The invention will be more fully understood in the light of the following description of several specific embodiments, Brief Description of the Drawings The description is made with reference to the accompanying drawings of which: Figure 1 is a plan view of a paved area according to a first embodiment of the invention; 5 Figures 2a to 2c are cross-sections along the line A-A' (shown in figure 1) showing each step for resurfacing the paved area according to the first embodiment of the invention; Figure 3 is cross-section along the line A-A' (shown in figure 1) of the resurfaced paving area on completion of the method according to the first 10 embodiment of the invention; Figure 4 is cross-sections along the line B-B' (shown in figure 1) of the resurfaced paving area on completion of the method according to the first embodiment of the invention. Detailed Description of Specific Embodiments 15 The embodiment relates to a method of resurfacing of an area of concrete paving It is the object of the embodiment to restore an area of concrete paving such as driveway by resurfacing the area without the requirement of removing the existing paving and replacing it. The method according to the embodiment as shown at Figures 1, 2a and 2b and 20 comprises cleaning the desired area 10 of existing concrete paving 14 and then applying an adhesive layer 16 over the surface of the existing concrete paving 14 whereby the thickness of the adhesive layer 16 is of the order of 2 to 10 mm. The layer of adhesive then has applied to it a layer 20 of a cementitious material 18 in which the aggregate takes the form of crushed limestone. The thickness of the 25 layer of cementitious material 20 is of the order of at least 2mm and is dependant to at least some extent upon the dimensions of the limestone particles. Subsequently, the layers of adhesive 16 and of the cementitious material 20 are allowed to set and cure.

-6 The curing time is dependent on the type of adhesive used and the weather conditions and can be of the order of between 12 to 36 hours. It is understood that during the setting and curing process the adhesive diffuses into the adjacent surface region of cementitious material to define a substantially single 5 undifferentiated layer 24 over the existing concrete paving 14 as shown in Figure 3 which is bonded to the existing concrete paving 14 as result of the presence of the adhesive. To complete the resurfacing the new surface 26 may be ground using a dry or wet grinding process to provide a polished finish to the new surface 26. Alternatively 10 or in addition the new surface 26 may be sealed with an appropriate sealer. The adhesive according to the embodiment takes the form of a powdered cement based adhesive which has in the past been specifically formulated to bond tiles or the like to a surface and which can be mixed with water to reduce the viscosity but without any loss of the adhesives bonding characteristics. Alternatively, other 15 types of adhesives may be used which can include example, polymer or elastomeric based adhesives. Adhesives comprising resins, epoxies or mixtures thereof may be also suitable. The cementitious material may be coloured using a pigment. The method according to the embodiment may be applied to indoor or outdoor 20 floors, driveways, steps and roofs, among others. According to a second embodiment of the invention and as shown at Figures 1 and 4 the paved area may be separated into separate regions 28, 30 and 32. As shown in Figure 4, in the case of the embodiment the separate regions 28, 30 and 30 are formed by the use of barrier elements 34 which are laid over the surface 12 25 according to the desired pattern. The barrier elements 34 may be formed from the material used to provide expansion joints in concrete structure. Alternatively the barrier elements may be formed of strips having a or T or L- shaped plastic or metal section and which can be bent to define the requisite contours required for a boundary between regions.

-7 At least one of the regions is to be coloured differently form the other regions as result of the cementitious material to be laid in the at least one region being coloured differently through the use of appropriate pigments or colouring material. In addition or alternatively at least one region may have its upper surface finished 5 top have different texture from the other regions. The creation of differently coloured and/or textured regions the forming of different patterns, such as flags, shapes of continents or countries, among others. According to another embodiment which is a variation of the second embodiment the upper face of the barrier which is to be exposed at the exposed face of the 10 finished paving is visually distinctive in that it is coloured and or textured to be able to be distinguished from the adjacent surfaces of the cementitious material. According to one form of the embodiment the barrier includes a strip which incorporates a set of spaced LEDs or like illumination means which can be activated to illuminated the separation of the regions. The strip is formed of a 15 plastic material and fully encloses the LEDS and is bonded to the T or L- shaped plastic or metal section which is fixed to the substrate. It should be appreciated that the scope of the invention is not limited to the scope of the embodiment disclosed. By way of example, the construction element may comprise indoor or outdoor floors, driveways, a step elements, walls, roofs, 20 among other. According to other embodiments of the invention the construction element may be a prefabricated construction element such as tiles or panels, paving slabs or bricks, steps, or the like. The present invention is not to be limited in scope by any of the specific 25 embodiments described herein. These embodiments are intended for the purpose of exemplification only. Functionally equivalent products and methods are clearly within the scope of the invention as described herein.

Claims

1. A method for resurfacing a paved area comprising the steps of: a. cleaning the surface of the paved area; 5 b. applying an adhesive over the surface; c. applying a layer of a settable cementitious composition incorporating an aggregate in the form of crushed limestone over the adhesive prior to the hardening of the adhesive; d. screeding the layer of cementitious material to form a surface having 10 the desired texture; and e. allowing the cementitious material to set and cure.

2. A method as claimed at claim 1 wherein the adhesive is allowed to harden at least 12 hours to set and cure.

3. A method as claimed at claim 1 or 2 wherein approximately 36 hours is 15 allowed for the adhesive to set and cure .

4. A method as claimed at claim 1 or 2 or 3 wherein the thickness of the layer of adhesive is approximately 2 to 10mm..

5. A method as claimed at any one of the preceding claims wherein the layer of cementitious material is of the order of at least 2 mm. 20

6. A method as claimed at any one of the preceding claims wherein the method further comprises applying a sealer to the exposed surface of the cementitious material after it has set.

7. A method as claimed at any one of the preceding claims wherein the method further comprises polishing the exposed surface of the 25 cementitious material after it has set.

8. .A method as claimed at any one of the preceding claims wherein the adhesive is a polymeric adhesive.

9. A method as claimed at any one of claims 1 to 7 wherein the adhesive is a cement based adhesive. 30

10. A method as claimed at any one of the preceding claims wherein the cementitious material includes a coloured pigment. -9

11. A method as claimed at any one of the preceding claims wherein the method further comprises the steps of installing barriers over the surface intermediate of the sides of the area to define a plurality of separate regions. 5

12. A method as claimed at claim 11 wherein at least one of the regions is filled with a cementitious material having a different colour to the other regions.

13. A method as claimed at claim 11 or 13 wherein the texture of at least one region differs from the other regions..

14. A method as claimed at claim 11 or 12 or 13 wherein, the barriers are 10 formed by contoured strips of material adapted to define expansion joints between the regions.

15. A method as claimed at claim 11 or 12 or 13 wherein, the barriers are formed by contoured sections having a flange which is able to be fixed to the surface. 15

16. A method as claimed at claim 15 wherein the section has a T or L-shaped cross-section.

17. A method as claimed at any one of claims 13 to 16 wherein the upper face of the barrier is exposed in the finished surface.

18. A method as claimed at claim 17 wherein the upper face is visually 20 distinctive from the exposed face of the regions.

19. A method as claimed at any one of claims 11 to 18 wherein the barrier includes an illumination means.

20. A method as claimed at claim 19 as dependant from claim 15 wherein the illumination means comprises a plastic strip which incorporates a set of 25 spaced LEDs and which are fixed to the barrier.

21. A method for resurfacing a paved area substantially as herein described with reference to the accompanying drawings

22. A surface obtained by the method as claimed at any one of the preceding claims. 30

23. A surface as claimed at claim 23 wherein the paved area is selected from the group consisting of an indoor or outdoor floor, a driveway, a set of steps or a roof. -10

24. A surface substantially as herein described with reference to the accompanying drawings.