I have seen sidewalks that were poured and then a decorative stone was placed on the top of the cement. Could anybody tell me at what point do you put the stone on,how deep do you float it and how do you clean it afterwards.
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R U sure it's real stone and not stamped concrete?
For real flags or slate, you finish the crete rough top scratched, then use mortar to set and grout the stone after the crete cures. The rough top on the crete is to provide a good key for the mortar.
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I think he is talking about spreading decorative rock on wet concrete and troweling it into the surface. Usually use uniform colored/sized stones from landscape suppliers to do this.
They can't get your Goat if you don't tell them where it is hidden.
I don't know. I have seen larger flagstones on crete base sidewalks so that is where my mind went. Isn't very clear from his writing, I don't think
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Most often what you see is exposed aggregate concrete - a nice-looking aggregate (like river gravel) is used in the mix and a retarder is sprayed on the surface. After a pre-determined interval the surface cement (uncured due to the retarder) is washed off, leaving the aggregate exposed.
Jeff
"Seeded concrete" is what that is called here.
Screed the crete,bull float it just enough to flatten it, sprinkle the gravel evenly across the lightly floated cream.
Now take the bull float and run it over the applied gravel until all traces of the rock disappear, use a hand float where need be.
The trick is to apply even pressure to the surface so that the stones all end up at the same level and are covered with the cream.
Use a Fresno to do the final passes and remove any bull float edge marks.
Do not use edgers or scorers that leave a defined lines in the cream as they will push the rock down and leave an edge line as opposed to a clean flat surface.
Spray the surface with a retarder used for exposed aggregate, wait the amount of time needed until the surface cream is still soft and the underlying surface has hardened.
Carefully water spray the cream off the stones and the bedding crete.
Over working the cream or too much float pressure will force the stone down to deep, not enough and the stone will not be bedded into the crete well enough to stay without popping.
Thankyou,seeded concrete is what I was looking for. If you could answer a couple more questions it would be a great help. The retarder that you apply is there a brand name or will my supplier know what I need and what is a fresno. I do blacktop for a living,tired of seeing it-have limited experience with concrete but I think I can handle this, thanks so much for your help
Retarder: Yes, a concrete supply house will know what to sell you if you explain what it is you are trying to do. Fresno : http://www.marshalltown.com/Products.aspx?D=200&S=243 Bull Float : http://www.marshalltown.com/Products.aspx?D=200&S=203 Found this along with a number of other articles via google. http://www.decorstone.com.au/esnotes.pdf
They can't get your Goat if you don't tell them where it is hidden.
Thanks for all your help
No problem at all. If it is your first time doing this I would advise asking around and see if you can find an experienced person to either help or at least advise you at your site while you do the work.. (Thinking retired experienced ....)
Also , do small sections at a time until you get a handle on the process and the timing involved. It is far more labor intensive than just pouring normal flat work and timing is everything.
They can't get your Goat if you don't tell them where it is hidden.
I recently poured a sidewalk and exposed the aggregate in some areas.
I ordered peagravel in my mix so that is what was exposed.
This Website is helpfull. http://www.exposedaggregateconcrete.com/menu.htm
The menu on the left has a few categories about exposing aggregate.
Exposing aggregate chemically is pretty common.
Will Rogers