From: richard lewis <rlewistx(--nospam--at)juno.com>
Date: Wed, 4 Apr 2001 13:17:00 -0500
Yes, the material is very limited, and the quality is very questionable.
The sand and stone will probably be dirty. I watched them make aggregate
as we drove down the road. I would see several women sitting by a pile
of large rock. They then proceeded to break the big rock into smaller
coarse aggregate. Basically, I will have cement, dirty sand and dirty
aggregate, and probably lots of dirty water.
On Wed, 4 Apr 2001 10:53:35 -0500 "Bill Polhemus" <bill(--nospam--at)polhemus.cc>
> Do you have any restrictions as to what may be used? In other words,
> are you
> restricted to essentially portland cement-based materials, or can
> you use
> some of the later-tech engineereed materials?
> William L. Polhemus, Jr., P.E.
> Polhemus Engineering Company
> Katy, Texas
> Phone 281-492-2251
> Fax 281-492-8203
> -----Original Message-----
> From: richard lewis [mailto:rlewistx(--nospam--at)juno.com]
> Sent: Wednesday, April 04, 2001 8:24 AM
> To: seaint(--nospam--at)seaint.org
> Subject: Concrete topping
> I have a concrete slab the is severely dusting on the surface. By
> I mean the top one inch is turning to powder. It was built in the
> 80's out in the bush of Kenya. I must assume it was prematurely
> and probably overwetted during the finishing process. I am not sure
> else would cause that much of the surface to deteriorate. It is an
> interior condition.
> What I would like to know is a recommended mix design for a topping
> of about 1" thick. It will be mixed by hand at the site. What is
> recommended for aggregate size and proportions of aggregate and
> As far as surface preparation, my thought is to remove the dust down
> sound concrete. I hope we can find some! Then, wet the surface and
> a topping.
> Thanks for your help.
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