Whatever the location of the building site, or wherever you manufacture concrete around the world and in the UK and Ireland, Yara can supply you with your NitCal concrete accelerating admixture at the time you want it.

Whatever the location of the building site, or wherever you manufacture concrete around the world, Yara can supply you with your NitCal concrete accelerating admixture at the time you want it.

A concrete hardening retarder which comprises a polymer (A) having the ability to retard concrete hardening.

Cracking of the concrete foundation prior to the complete curing of the concrete.

The concrete sets around the aquagels in the initial set stage.

By using the polypropylene fibres, the setting process of the concrete improves, so that the liquid-tightness of the eventual concrete construction is improved.

The inventive compositions accelerate the setting and hardening of the fresh concrete and increase the strength of the concrete.

Such methods can be used to resist ASR in fresh concrete, in concrete that is setting, or in hardened concrete.

Concrete to which accelerator has been added sets rapidly.

The present invention is directed towards a lifting anchor for embedment in a concrete member.

Once said elements have been coupled, centring is positioned and the concrete is then poured; setting then follows.

It is then poured into a mould and left to set, and a retarder is admixed at least partially to the lightweight concrete.

In one embodiment, a circular blade is coated with a chemical which retards the setting of the concrete.

The wood or cellulose product thus obtained is particularly useful as a filler of concrete, asphalt and plastics, and, e.g., incorporated into a concrete mix, it does not impair the hardening of the mix.

The time of initial setting of cement is about 30 minutes.