MMC 5542 48 Feb '16 cc

Speed up
setting time
Yara NitCal for cold
weather concreting 3
Yara NitCal ® passes corrosion
inhibition ASTM certification
Yara supply NitCal ® , a calcium nitrate based
multi-function admixture, to the worldwide
concrete using industry. The product is a setting
accelerator as per BS-EN934-2 and is used
extensively for cold weather concreting to
prevent delays due to slow set. In cold weather
Yara NitCal ® ensures your specified mix will set
in your timescale whereas use of heated mixes
or heated sites is often a costly and ‘hit and
miss’ solution. An added benefit is that the
concrete takes longer to cool down due to the
exothermic nature of the accelerated reaction
thus reducing the loss of workability, the risk of
freeze damage, and a sub-standard set.
Corrosion inhibition
In 2015 Yara submitted Yara NitCal ® to ENCO for
certification as per ASTM C1582/C1582M-11 ‘The
Standard Specification for Admixtures to Inhibit
Chloride-Induced Corrosion of Reinforcing Steel
in Concrete’ following on from previous research
by SINTEF and UCLA. Using test method G109,
which is an accelerated test that measures the
efficacy of an admixture in reducing or
preventing chloride corrosion, Yara NitCal ®
passed and is certified for use as a chloride
corrosion prevention admixture. Initial research
also indicated that Yara NitCal ® reduced
carbonation by 40% in an accelerated test.
A simple admixture
Yara NitCal ® is a simple compound, fast acting
and easy to use. It dissolves rapidly without
residue or side effect. Also it has a low dose
requirement – no more than 4% of cement
weight.
Ask your admixture company about Yara NitCal ®
for your specified mix or admixture. Or contact
Adam Reid at adam.reid@yara.com or 07768
866452.
Yara have over a 100 years of chemical
production and industry experience and are a
global supplier of industrial chemicals, technical
support, research and development, and
expertise.
Yara NitCal for cold
weather concreting 2
MMC February 2016 33