Current Issue Flipbook

Trade Journals for the Concrete Industry

Current Issue Archive Online Flipbooks CPI Middle East CPI TV Events Buyers' Guide Newsletter Advertising Subscription

Calcium Nitrate as a Multifunctional Concrete Admixture

20 Years of Evolution of an Admixture


The use of concrete admixtures increases the possibilities to produce concrete with special properties as well as under harsh conditions. Over the years many inorganic and organic admixtures have been investigated and brought to market. After more than 20 years of application Calcium Nitrate turns out to be a very versatile concrete admixture. Initially, Calcium Nitrate has been used as a chloride free set accelerator. And soon it became popular as cold weather concrete admixture – “Anti-freeze”. The setting acceleration has been used, too, for the compensation of retardation by water reducers (Plasticisers). And over the years it was observed that the use of Calcium Nitrate leads in most cases to a moderate enhancement of the long term compressive strength. And last but not least the corrosion inhibitor effect for embedded reinforcement steel against chloride induced corrosion has been found. The setting acceleration may be achieved by small dosages (in the range 0.2% - 1.0% dry admixture by mass of cement). The interaction with polymers but also strength enhancement demands moderate dosages (1% - 3%). The corrosion inhibition requires high dosages (3% and above).

Show article
Download article


Yara Italia S.p.A.
Via Benigno Crespi, 57
20159 Milan, Italy
T +39 0275416325
Mob. +39 3356323883

CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

About us
ad-media GmbH

Industriestrasse 180
50999 Cologne

T: + 49 2236 96 23 90
F: + 49 2236 96 23 96

  • Magazine
  • CPi-tv
  • Events
  • Buyers' Guide
  • Newsletter
  • Advertising
  • Patents
  • ad-media GmbH
  • Linkedin
  • Imprint
  • Data Protection
We are using Cookies on www.cpi-worldwide.com. Some of them are essential, while others help us improve this website and your experience. More information can be found in our privacy policy. Accept all Extended Configuration
Cookies of this category are required for the basic functions of the website. They are used for safe and proper use and therefore cannot be deactivated.
Cookies of this category allow us to analyze (Google Analytics) the use of the website and measure performance. They also help us to provide useful functions.
Cookies of this category allow us to show third-party content (social networks, videos)
Save settings and close Accept all