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+--- Thread: Importing Sand (/showthread.php?tid=3230)
Importing Sand - sansei - 08-19-2007
Article in the Honolulu Advertiser: Isle concrete suppliers forced to import sand http://www.honoluluadvertiser.com/apps/pbcs.dll/article?AID=/20070819/BUSINESS/708190338/1071
Did I just hear cha ching on building costs? Of course commercial builders that typically use more concrete are more affected.
The other thing of concern is that oil prices continue to go up and that means fuel surchages on transporting the sand only has one direction to go.
Larry
RE: Importing Sand - Jeffhale - 08-19-2007
I just constructed a small rock wall, last week. Had to go to Puna Rock In Kea`u for sand.. It is ground up lava, (blue stone) mined and ground right there, on the spot. Price seemed reasonable too, at $40 per ton.. So, unless this is inferior, I wouldn't be worrying much about getting sand, not at all.
At least, I didn't notice any shortage of lava on the B.I.
RE: Importing Sand - emorata - 08-20-2007
hi jeff,
so is that black sand vs white sand produced? Thats a good price per tone
RE: Importing Sand - Bob Orts - 08-20-2007
Is the sand used in concrete the same as pulverizing rock to sand like consistency? I thought they were two different things from a construction point of view?
RE: Importing Sand - sansei - 08-21-2007
Natural sand is smooth and rounded from wear. Crushed rock is irregular and angular. The aggregate would tend to dominate a concrete mix and I would not expect to see any difference between natural and manufactured sand. A mortar mix for pointing or grouting may not work as smoothly with the pointy man made sand. There may also be some descernable difference in shotcrete or gunnite. Someone from Pacific Gunnite may be able to answer that.
Larry
RE: Importing Sand - Carey - 08-22-2007
Right now there is a lot of FREE black sand from the Wailoa dredging. It has tested safe (a fact that seemed to surprise the county). The only hitch is, like all ocean beach sand, it has a very high salt content, and most likely is not good for concrete, unless you want a really low temp cure (just joking...but they do add salt to concrete up north in the winter...) Of course you can wash it, but it really does have a lot of salt....which does kill most planting & such.
RE: Importing Sand - Kahunascott - 08-22-2007
Carey,
It's also full of organic matter and wouldn't have any strength.
RE: Importing Sand - Puna Kite Man - 09-13-2007
I wonder if that would be ok for planting grass.
RE: Importing Sand - Carey - 09-13-2007
Unless your grass is VERY salt tolerant, or the sand is washed of most of the salt, it may burn the grass. We had some that was used for a science project where the sand was water seived. The left over sand was put in a shallow depression in our yard that was weedy. Even after a little rinsing, the weeds died. There are now some grasses that are growing (after 2 months), so if you are not in any hurry...