APPENDIX F: PROPOSAL TO THE ALL-WEATHER COUNCIL
Proposal for an Update
to
Recommended Practices and Guide Specifications for
Cold Weather Masonry Construction
April 1996
Background
specifications do not recommend antifreeze
The following recommendations for updating
admixtures primarily because little is known
the April 1, 1988, 11th printing of the subject doc-
about them. However, the findings from this and
ument are the product of a cooperative research
other recent studies on antifreeze admixtures
project conducted in partnership between the
have shown significant potential that merits fur-
U.S. Army Cold Regions Research and Engineer-
ther consideration.
ing Laboratory (CRREL) and the National Con-
crete Masonry Association (NCMA). This work
Recommendations
was done from 1992 to 1995 under the authority
The following recommendations are refer-
of the U.S. Army Corps of Engineers Construction
enced to the subject document by page, section,
Productivity Advancement Research (CPAR) initia-
and paragraph. Items we recommend be deleted
tive, which is a cost-shared program between the
from the document are crossed out. Items in bold
Corps and the construction industry for the pur-
italics are recommended to be added to the docu-
pose of enhancing construction productivity. Its
ment. A general comment, but one not incorpor-
primary purpose is to develop improved guid-
ated into the recommendations below, is to pro-
ance on thermal protection requirements for cold-
duce a parallel document with SI units (formerly
weather masonry construction. In addition, the
referred to as a "metric" document). ACI 318 and
feasibility of using antifreeze admixtures in
ACI 318M are an example.
masonry mortar was studied. The existing guide
47
Previous Page
