Is it possible to mix concrete with seawater instead of fresh? Never had reason to wonder until recently.
Thanks NomadsBruce R Leech - 2-27-2006 at 07:50 PM
yes it is possible but it doesn't hold up very long.jerry - 2-27-2006 at 08:19 PM
and be sure to check your gravel and sand if there salty the cement will decentgrate in no time its a dead givaway if you see sea shells in the cement
its not gona hold up
if your going to build have the block teasted also
have a good one jerrydjh - 2-27-2006 at 08:52 PM
So THAT'S why one (older) section of my fence is turning into.... a beach??
djhcomitan - 2-27-2006 at 09:10 PM
Sea Water
8-3. Sea water and cement can be mixed with satisfactory results; however, concrete strength may be reduced by 10 to 20 percent. Salt water acts as an
accelerant much the same as calcium chloride (CaCl 2 ). Avoid using sea water in reinforced concrete if possible; but as a field expedient, decrease
the water-to-cement ratio to offset the strength loss. If the water-to-cement ratio cannot be changed, consider the following to offset strength
reduction:
If using ocean water with an average salt content, multiply the design thickness by 1.15 to obtain a thickness of equal strength.
If using water from a landlocked sea, such as the Dead Sea, with an extremely high salt content, multiply the design thickness by 1.25 to obtain a
thickness of equal strengthPompano - 2-28-2006 at 05:50 AM
If you are looking for steady employment, use seawater in your cement. If you want a lifelong job, use beachsand also.
Get the point?Diver - 2-28-2006 at 06:03 AM
As Comitan mentions, you can increase the thickness of the concrete to achieve a specified design load carrying capacity. However, the longevity of
the concrete will also be severely compromised with salt water or salty sand. Excess salt interferes with the chemical reaction that "sets" the
concrete. Excess salt deposits will also remain within the cured concrete causing the surface to deteriorate more quickly when subjected to moisture;
this condition will also prevent long-term bonding of any paint or sealant. Not to mention that excess salts can speed deterioration of any rebar
within the pour.
Don't do it !
concrete and saltwater
rocknrog - 5-25-2006 at 05:36 AM
no the don't mix, don't do itshari - 5-26-2006 at 06:37 PM
just a suggestion...evrywhere we look cement houses and walls are crumbling here on the coast after only a few years....so we build everything new out
of fieldstone now which lasts forever, plus you don't have to paint it and it looks gorgeous...with the price of blocks, cement, and especially rebar
(super expensive here), rock works out to be about the same price per meter.rts551 - 5-26-2006 at 07:59 PM
Shari
While I agree that the rock is the way to go (and plenty of it around the area)... the builders have learned to use better sand in their concrete
here in Abreojos... NO BEACH SAND.. and it is lasting longer. My house is showing no wear after ten years. The block now comes from Vizcaino with a
better quality than what we used to have... and there is a cement plaster coating over the block. Quality is getting much better than when I started
15 years ago.cat127 - 9-11-2006 at 09:16 PM
Does any use 3/4" rock when pouring concrete?jerry - 9-11-2006 at 11:11 PM
cat127 most of the gravel is screened not crushed the graval for makin block is about 3/4 -- its taken out of the arroyos and not very cleanSantiago - 9-12-2006 at 07:01 AM
Quote:
Originally posted by Pompano
If you are looking for steady employment, use seawater in your cement. If you want a lifelong job, use beachsand also.
Get the point?
As soon as I saw the thread title I just knew this would bring Pompano in!
Yeah, well
Hook - 9-12-2006 at 11:40 AM
it brought him in about 8 months ago.
I miss the guy. I guess he no longer lives in Baja. So what! He has a wealth of info on the place still.
