In these days of climate change it is up to everyone to pull together and think about how to do things greener. About 10 years ago in Australia there was only one way to change the appearance boring old grey concrete and create a decorative pattern finish. And of course that was to remove the old concrete and re pour the existing area and add a decorative finish such as slate impression, faux brick and pressed concrete.
Now consider what is involved in removing and replacing lets just say an 80 M2 area as an example. First there is the cutting of the existing concrete and then the loading of the cut concrete onto a dump truck. Already here we have fuel used in the demo saw and the bob-cat to load the truck which will use more fuel going to dump the cut concrete in the land-fill area.
Then there is the laying of the new concrete, electricity used in the concrete plant, the fuel used in the trucks that supply the concrete plants and then to deliver the concrete.
From this point in all is equal as close to the same material all bar the polymer is basically the same as that is involved in the concrete resurfacing process.
Now to be fair we should compare apples for apples, one of the main components used in spray pave or similar resurfacing is polymer and the chemicals used in the colour.
Other than that there is the driving to and from the job and if you use a petroleum powered compressor then that is it, most green operators will use the new generation of bio-degradable acids.
So overall the energy used to remove and replace old concrete as opposed to the energy used in the resurfacing process such as spray pave, make resurfacing the greener choice by along shot and a massive saving in land fill from concrete.
If you have an area that you were considering removing then search the web or your local classifieds and have your concrete inspected, as the number one reason most people remove and replace concrete is because they were unaware that the existing concrete could be repaired and resurfaced.
For FAQ on resurfacing: http://supremeresurfacing.com.au