That would be a calcium aluminate cement.  I call it pothole cement.  

-----Original Message-----
From: The listserv where the buildings do the talking
[mailto:[log in to unmask]] On Behalf Of Ruth Barton
Sent: Thursday, July 16, 2009 11:12 AM
To: [log in to unmask]
Subject: Re: [BP] Flocculate with Expansive Clay

We bought a small bucket of something called "hydraulic cement" the other
day for a sewer line repair project my husband is attempting.  The guy said
you have to work really fast with it as it sets up in about 5 minutes.  The
damned stuff is expensive.  That's all I know about it.  Ruth


At 6:25 AM -0400 7/9/09, Gabriel Orgrease wrote:
Google books, "Clay Materials Used in Construction " edited by G.M. Reeves,
I. Sims & J.C. Cripps,

<http://tinyurl.com/kne72v>http://tinyurl.com/kne72v

includes information on natural hydraulic lime cements, etc.

find an excerpt on Bentonite here,
<http://tinyurl.com/mcxt2w>http://tinyurl.com/mcxt2w

][<en

-- 
Ruth Barton
[log in to unmask]
Dummerston, VT

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