sissy
sissy
- Joined
- Jan 17, 2011
- Messages
- 33,086
- Reaction score
- 15,707
- Location
- Axton virginia
- Showcase(s):
- 1
- Hardiness Zone
- 7A
- Country
I think that is due to the acid leaching from the block but as the block sits around for awhile that is mostly gone . Cement takes years and years to cure . but since block is not exposed to the damp ground and has air flow all around it cures faster .Block will loose that acidic stuff faster .So by the time most people even get block it has been sitting outside exposed to weather and most of that is long gone .They say that about brick also .Look at lava rock all that is is brick clinkers /It is just a by product of the pressing of brick .I remember back in NJ on Route 1 there was a concrete manufacturing plant right down from Ford Motor company and I used to go there and get lava rock for my gardens for 2 dollars for a truckload ,used my sons big truck .You would pull into the yard there and they would scoop it up and off you went .Sometimes they would even give it away because they had so much of it .If lava rock does not cause problems block will not .Real lava rock is black or grey .I know I have real lava rock from Hawaii a friend sent me .