Geotechnical News • June 2015
29
THE GROUT LINE
Paolo Gazzarrini
Overture
39th episode of the Grout Line and for
this issue we have an article about a
"different" type of grouting written by
my good friend Jim Warner, Grouting
Consultant. Jim is author of the Grout-
ing Bible: Practical Handbook of
Grouting - Soil, Rock and Structure,
which, in my opionion, all grouters
should have in their library.
The article is not related to convention-
al grouting in soil or rock, but in struc-
tures, mainly concrete and masonry. I
agree with Jim that established grout-
ers could make better use of opportuni-
ties where structural grouting could be
used.
Enjoy your reading!
And, as usual, the same request, ask-
ing you to send me your grouting com-
ments or grouting stories or case histo-
ries. My coordinates are:
Paolo Gazzarrini, paolo@paologaz.
com,
or paolo@
groutline.com
Ciao! Cheers!
Grouting in Structures
James Warner
While pressure grouting is most of-
ten used in geomaterials, it is also a
favorable technology for the repair
and retrofit of structural concrete and
masonry. While many “geotechnical”
grouters turn their back to such appli-
cations, there is significant benefit of
such work, which involves essentially
the same principals and parameters as
geotechnical applications, with the ex-
ception that significantly smaller quan-
tities are common, and thus smaller,
lower capacity equipment. Also, grout
stability, shrinkage, and strength be-
come essential considerations.
Figure 1. Here are two defects in one location. Both
honeycomb and a crack are visible.
Figure 2. Tight fitting form over honeycombed surface
contains grout during injection.
