concrete

CHRYSO®Tard CHR

Chloride-free set retarding water reducing/ plasticising admixture

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CHRYSO®Tard CHR is classified as a set retarding water reducing/plasticising admixture according to SANS 50934-2(EN 934-2). The admixture thus induces the following major effects on a concrete mix:

Produces the combined effects of a high range reducing/plasticising admixture (primary function) and
A set retarding admixture (secondary function).

Water reduction significantly improves compressive strengths at all ages. CHRYSO®Tard CHR allows strength grades to be met at reduced cement content or increased workability.
Water reduction enhances durability through production of low permeability concrete.
Controlled retardation extends the working life and the stiffening time for ease of construction, minimising delay problems.
Control of stiffening improves slip forming and assists in preventing the formation of cold joints in large pours.
Reduces slump loss, particularly at higher temperatures.
Chloride free, safe for use in pre-stressed and reinforced concrete.
CHRYSO®Tard CHR does not modify the consistency of the concrete.
CHRYSO®Tard CHR can be used in conjunction with a superplasticiser from the CHRYSO®Fluid Optima Range.