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Posted by S Rated on September 29, 2008, 4:14 pm
I'm unable to find any information pertaining to "floating" concrete
when it is poured into a form. My ultimate goal is to hide all coarse
aggregate from all surfaces when poured into a mold. I plan to use
melamine surface for the mold.
So far, I've come up with two alternatives: Only use sand as
aggregate and option two is to pour standard concrete mix and then
after braking mold, cover all surfaces with mortar mix. While I plan
to have a rebar skeleton, I'm unsure of sand-only concrete strength.
And option two is not ideal as I'd like to bypass additional steps
post mold braking, if possible.
What I'm making are table legs that will be about 6"x3"x40". Surface
finish I'm looking for is similar to this --
http://www.cgmprecast.com/images/picnic_table_leg.jpg.
TIA,
Dennis
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Posted by Nehmo Sergheyev on September 30, 2008, 2:11 am
> I'm unable to find any information pertaining to "floating" concrete
> when it is poured into a form. =A0My ultimate goal is to hide all coarse
> aggregate from all surfaces when poured into a mold. =A0I plan to use
> melamine surface for the mold.
> So far, I've come up with two alternatives: =A0Only use sand as
> aggregate and option two is to pour standard concrete mix and then
> after braking mold, cover all surfaces with mortar mix. =A0While I plan
> to have a rebar skeleton, I'm unsure of sand-only concrete strength.
> And option two is not ideal as I'd like to bypass additional steps
> post mold braking, if possible.
> What I'm making are table legs that will be about 6"x3"x40". =A0Surface
> finish I'm looking for is similar to this --http://www.cgmprecast.com/ima=
ges/picnic_table_leg.jpg.
> TIA,
> Dennis
I would hesitate to make anything concrete only 3 inches thick. Is
concrete the best material for this job? Why do you want to use
concrete? If you just want some rectangular prism shaped parts that
are heavy, consider using some scrap granite.
~~( Nehmo )~~
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Posted by S Rated on September 30, 2008, 9:53 am
> > I'm unable to find any information pertaining to "floating" concrete
> > when it is poured into a form. =A0My ultimate goal is to hide all coars=
e
> > aggregate from all surfaces when poured into a mold. =A0I plan to use
> > melamine surface for the mold.
> > So far, I've come up with two alternatives: =A0Only use sand as
> > aggregate and option two is to pour standard concrete mix and then
> > after braking mold, cover all surfaces with mortar mix. =A0While I plan
> > to have a rebar skeleton, I'm unsure of sand-only concrete strength.
> > And option two is not ideal as I'd like to bypass additional steps
> > post mold braking, if possible.
> > What I'm making are table legs that will be about 6"x3"x40". =A0Surface
> > finish I'm looking for is similar to this --http://www.cgmprecast.com/i=
mages/picnic_table_leg.jpg.
> > TIA,
> > Dennis
> I would hesitate to make anything concrete only 3 inches thick. Is
> concrete the best material for this job? Why do you want to use
> concrete? =A0If you just want some rectangular prism shaped parts that
> are heavy, consider using some scrap granite.
> ~~( Nehmo )~~
Unfortunately, yes. I'm going for concrete look.
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Posted by Roger Shoaf on October 7, 2008, 2:05 am
news:983d0fb1-b638-4e6b-bd1b-
I would hesitate to make anything concrete only 3 inches thick. Is
concrete the best material for this job? Why do you want to use
concrete? If you just want some rectangular prism shaped parts that
are heavy, consider using some scrap granite.
~~( Nehmo )~~
I guess you have never seen an old fashion laundry sink. These were only
about an inch thick.
Also consider how thick a regular old cinder bleak is.
They also make roof tiles and Hardy plank from concrete less than an inch
thick so I think the design of the item to be cast and the formula of the
concrete will make a big difference to the final useable thickness.
--
Roger Shoaf
About the time I had mastered getting the toothpaste back in the tube, then
they come up with this striped stuff.
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Posted by Rick Samuel on September 30, 2008, 6:02 am
> to have a rebar skeleton, I'm unsure of sand-only concrete strength.
Fiberglass, loose fibers. No idea how much, tho
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> when it is poured into a form. =A0My ultimate goal is to hide all coarse
> aggregate from all surfaces when poured into a mold. =A0I plan to use
> melamine surface for the mold.
> So far, I've come up with two alternatives: =A0Only use sand as
> aggregate and option two is to pour standard concrete mix and then
> after braking mold, cover all surfaces with mortar mix. =A0While I plan
> to have a rebar skeleton, I'm unsure of sand-only concrete strength.
> And option two is not ideal as I'd like to bypass additional steps
> post mold braking, if possible.
> What I'm making are table legs that will be about 6"x3"x40". =A0Surface
> finish I'm looking for is similar to this --http://www.cgmprecast.com/ima=