Cliff Rohrabacher
02-21-2009, 12:23 PM
I have a small ( & small in geometry too) DIY application I'm fiddling with that'll require a concrete that can:
1.) Tolerate about 1000 Def F over extended periods lasting months.
2.) Be highly dense with a high pressure strength (no numbers available)
3. Be porous so to wick away and allow fast evaporation of any ambient moisture to prevent spalling from bursting bubbles of trapped moisture.
The only moisture (after cure) the product will see will be that which it will wick up during high humidity situations but no direct contact with lliquid water will occur.
I figure I can use a finely ground silica for the aggregate instead of sand (much like the silicates Custom Products Co uses in it's epoxy mortar).
But the wicking porous concrete part has me stumped. I know about porous concret for drainage but, I haven't a clue how they achieve it.
Any one know about porous concrete?
1.) Tolerate about 1000 Def F over extended periods lasting months.
2.) Be highly dense with a high pressure strength (no numbers available)
3. Be porous so to wick away and allow fast evaporation of any ambient moisture to prevent spalling from bursting bubbles of trapped moisture.
The only moisture (after cure) the product will see will be that which it will wick up during high humidity situations but no direct contact with lliquid water will occur.
I figure I can use a finely ground silica for the aggregate instead of sand (much like the silicates Custom Products Co uses in it's epoxy mortar).
But the wicking porous concrete part has me stumped. I know about porous concret for drainage but, I haven't a clue how they achieve it.
Any one know about porous concrete?