Any truth to Tennessee flag stone being harder?? PB saying it is and they charge a bit extra for it.
Oklahoma vs Tennessee Crab Orchard Stone
- Thread starter zebramoray
- Start date
Did he leave you any samples? Can you get some samples? Try drilling a hole through both with a concrete bit, see which one takes longer. You could also see how difficult it is to scratch the surfaces with a nail, scratching the same spot attempting to gouge them. To could also take a rock hammer and chip the edges to get a feel for the strength of the stone. I'm sure there is a more technical way.
Do you have landscaping or stone supply place that he might be using, you could go there and ask...
Do you have landscaping or stone supply place that he might be using, you could go there and ask...
My PB told me the same thing that Tenessee was harder - but they didn't charge anymore for it. I chose the Tenessee, but don't have any time under my belt. My pool build just finished last week.
What a coincidence. I am redoing my pool right now and I am doing Tennessee Crab Orchard flagstone. I am planning on ordering mine in the next week or so. I have a few samples and it seems pretty hard but I have nothing to compare it to. The quarry says that it works well as a pool deck. I guess we shall see.
ASTM C616 classifies Quartz-Based Dimension Stone into three categories: Sandstone (Type I), Quartzitic Sandstone (Type II), and Quartzite (Type III). The stone is classified by the following physical properties: absorption by weight, density, compressive strength, modulus of rupture, and abrasion resistance.
Sandstone is the weakest. I think that regular sandstone is not a good choice in most cases. It tends to be too weak and does not hold up well.
Quartzitic sandstone is very strong and durable. It is composed of grains of Quartz bonded by Silica. I think that the best choice in most cases for decks is a quartzitic sandstone. It has a good texture, a good slip resistant surface, and very good weatherability.
Quartzite is stone that was originally sandstone but has been heated and pressurized in the earth into a harder and more durable stone than sandstone. During heating and pressurization, the grains of sand are melted together. This tends to give quartzite a slicker surface. In cases of water immersion, especially with a salt pool, I think that a true quartzite is usually a better choice.
Tennessee Crab Orchard Stone is usually a quartzitic sandstone. It is sometime referred to as a quartzite, but I don't think that it is a true quartzite. Many stone suppliers will be able to tell you the physical properties and composition of the stone, and to which classification the stone belongs. If there is any question, you might want to consult with a stonemason.
You want a denser stone that has less open pore space. You should get a stone with a density of at least 150 pounds per cubic foot and a water absorption by weight of not more than 3%. Water absorption can cause freeze/thaw damage, and creates more damage from salts and other chemicals.
http://www.clevelandquarries.com/archit ... .php#specs
http://www.astm.org/Standards/C616.htm
http://www.cmc-concrete.com/CMC%20Flyer ... esting.pdf
ftp://ftp.ebuild.com/woc/M950530.PDF
http://isse.utk.edu/ccp/projects/natura ... dstone.pdf
Sandstone is the weakest. I think that regular sandstone is not a good choice in most cases. It tends to be too weak and does not hold up well.
Quartzitic sandstone is very strong and durable. It is composed of grains of Quartz bonded by Silica. I think that the best choice in most cases for decks is a quartzitic sandstone. It has a good texture, a good slip resistant surface, and very good weatherability.
Quartzite is stone that was originally sandstone but has been heated and pressurized in the earth into a harder and more durable stone than sandstone. During heating and pressurization, the grains of sand are melted together. This tends to give quartzite a slicker surface. In cases of water immersion, especially with a salt pool, I think that a true quartzite is usually a better choice.
Tennessee Crab Orchard Stone is usually a quartzitic sandstone. It is sometime referred to as a quartzite, but I don't think that it is a true quartzite. Many stone suppliers will be able to tell you the physical properties and composition of the stone, and to which classification the stone belongs. If there is any question, you might want to consult with a stonemason.
You want a denser stone that has less open pore space. You should get a stone with a density of at least 150 pounds per cubic foot and a water absorption by weight of not more than 3%. Water absorption can cause freeze/thaw damage, and creates more damage from salts and other chemicals.
http://www.clevelandquarries.com/archit ... .php#specs
http://www.astm.org/Standards/C616.htm
http://www.cmc-concrete.com/CMC%20Flyer ... esting.pdf
ftp://ftp.ebuild.com/woc/M950530.PDF
http://isse.utk.edu/ccp/projects/natura ... dstone.pdf
dlandrum
0
- Oct 3, 2011
- 20
I sealed my coping with deck-o-seal (http://www.deckoseal.com/)
Now the water visibly beads on it.
When building the pool, I would think you want some form of absorption or else the mortar will not bond with the stone.
Now the water visibly beads on it.
When building the pool, I would think you want some form of absorption or else the mortar will not bond with the stone.
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