Sikament® RB 858

Sikament® RB 858 follows the requirements of ASTM C494; Type G and EN 934-2

Sulphonated napthalene

12 months from date of production if stored properly

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +50°C. Mix well before using.

~1.22 kg/l (+25°C)

The standard rules of good concreting practice for production and placing must be observed when using Sikament® RB 858 in concrete. Refer to relevant standards.
Fresh concrete must be cured properly especially at high temperatures in order to prevent plastic and drying shrinkage. Use Sika® Antisol® products as a curing agent or apply wet hessian.

Sikament® RB 858 is a ready-to-use admixture to be added to the concrete as a separate component. Optimal result is obtained if Sikament® RB 858 is poured into the concrete mix right after the addition of the first 80% of the mixing water, i.e. when all solids are wetted. Avoid adding the admixture to the dry aggregates.

Sikament® RB 858 is suitable for mixes containing all types of cement and supplementary cementitious materials such as: Microsilica (Silica Fume), Fly Ash (PFA), GGBS (ground granulated blast furnace slag) and the following Sika products:
SikaPump®, Sika®FerroGard®, SikaFume®, SikaFiber®, Sika® Aer, Sika® Stabilizer, SikaControl®
We recommend to perform trial mixes to establish the required performance when combining Sikament® RB 858 with the above products or other admixtures. Please consult our Sika Technical Department.

0.8 - 2.0 % by weight of binder
Other dosages by weight of binder can be used depending on the mix design, raw materials, climatic conditions and concrete requirements.
Trial mixes must be performed to establish the exact dosage rate required.