<html>
<body>
Learned in an article at
<a href="http://www.ancient-origins.net/history/ten-things-ancients-did-better-us-004557" eudora="autourl">
http://www.ancient-origins.net/history/ten-things-ancients-did-better-us-004557</a>
that the Romans made concrete by mixing lime, volcanic rock, and
seawater that contained the ideal crystalline structure of Tobermorite.
Purportedly the Roman concrete had a greater strength and durability than
modern concrete as well as only requiring baking the limestone at
900<font face="Arial, Helvetica" size=4>°</font>C. Any present attempts
at duplicating this process?<br><br>
Another concrete observation: I've been watching a series on public TV
called Grand Designs where the builders use inordinate quantities of
concrete, with some of the slab pours having the consistency of soup. Is
this normal practice in the UK? It reminds me of the building methods of
Mike "I don't use one stud when I can use five"
Holmes.<br><br>
Peter</body>
</html>