I was told by a friend that you should always put a small amount of
liquid dish detergent into your concrete or stucco mix to make it more
workable with less water.
a) Does it actually make the mixture more workable?
b) Does it decrease the strength or increase the strength due to the
need for less water?
c) How much should you put in?
d) Anything else I should know? Perhaps it is against city code
because it isn't an "approved admixture", etc?
Just hoping for some verification or denial.
PS: I understand that you can purchase superplasticisers but that is
beyond the scope of many small projects such as rebuilding steps,
stuccoing a framed in porch, etc.
Somehow I get the feeling this is a poor idea. I don't think anyone
will be able to answer authoritatively as I doubt if anyone has, or will,
BTW the amount of water in the mix is not, or should not, be dependent
on desired workability, There are specific ratios and messing with them
will reduce the strength of the final product. Water becomes part of the
concrete. With a proper mix very little evaporates.
On Thu, 12 Apr 2007 19:05:28 -0400, "Joseph Meehan"
Might be the Discovery Channel showing the bridge pour below the
Hoover Dam. Said to be the largest single pour; ever?
Trucks lined up and up. One person's job to check the mix on every
truck. They even moved trucks up ahead of the line, timing travel,
sitting time, etc. Great show.
"The voices in my head may not be real, but they have some good ideas!"
there are additives that replace the water that affect the workability of
the concrete and affect the time for setting.
cave creek, az
I have never heard of this but I would be cautious of this kind of
experiment. I recall where a bridge had to me torn down when some one
spilled their coffee into a mixer truck the sugar caused an adverse reaction
that caused a failure of the concrete.
Seems to me that if simple dish soap was a good idea then it would be
something that the cement companies would advocate.
If you are not part of the solution, you are not dissolved in the solvent.
I find it hard to imagine that 6 to 10 cubic yards of concrete would be
affected by a couple of spoonfuls of sugar. Worse things can be found in the
aggregate, especially if animals have been using it lately.
I also find the coffee story questionable. I thought that sugar,
although harmful when used to excess, was commonly used in small
amounts as an additive to increase workability time during long
difficult pours in hot weather, in much the same way as calcium
chloride is used to speed up the reaction in cold weather.
I looked in google but they have surprisingly little about this...
perhaps I just clicked the wrong responses.
An alleged drywall guy told me to use a small amout of Dawn in the last
coat of mud on tape to make it creamy. It indeed does make it creamy. But
I guess if I watered the piss out of it it would be creamy too.
What does that have to do with your question? Well, nothing.
It so happens that someone has tried this. Believe it or not the CIA.
Addition of even small amounts of liquid soap (I believe Ivory was
used in the test) to concrete does not seem to change the curing time
or what it looks like BUT the strength of the resultant concrete after
setting will be severely reduced. We did it as a form of sabotage.
Ex-CIA 25 years in the business.
On 12 Apr 2007 14:13:24 -0700, " email@example.com"
email response not expected but to respond remove .uk at end
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