yes, I mix the concrete in the construction ( with this machine
http://www.facebook.com/photo.php?pid=1421179&l=67e17&id=612317804 )
with a machine that elaborates and pumps the concrete
with a yield of 15 to 20 cubics meters by day
pumping it to 20 metes of height
in the United States I have seen that they do the strained one in a
single day
we do it in several days by which a cold pour joints
is caused to us and
we considered that this within the tolerance
structures
that you think?