This is noce (color) travertine coping. All natural stone materials are prone to salt water damage. We do use a hydrophobic stone sealer that helps to prevent water intrusion, but it is more of a band aid that will need to be reapplied each year. The issue is that salt-laden water penetrates the pores in the stone, and as the water evaporates, the salt crystal is left behind. As it reforms and expands, the crystalline pressure can be around 10,000 psi. that does not fare well against a 3500 psi travertine, or 1500 psi flagstone.

If you are dead set on a salt based chlorine generator, I suggest using a manufactured material such as artistic pavers. The product is around 9,000 psi and comes in a bull nosed material. While it will cost more up front, you will not be facing replacement very soon. I have a pool that is salt chlorine, with artistic pavers it is 9 years old now, and looks great. Also, be sure to use ceramic, non-porous tile, or glass is an option.
Please realize that you will have a greater issue with a white salt line at the waterline of the pool as it s constantly falling out of solution and scaling the tile.

My alternate suggestion for the desired "low chlorine pool water" is the use of UV and ozone to minimize the chlorine that you have to maintain in the pool. These coupled together are great for oxidizing bacteria and do not off set your PH levels like a salt system does. They also have no other corrosive issues.

I hope that my description has helped you make a more educated decision about your pool.

Thank you very much for the info. Do you do pool remodels in Houston?