Sikament® RB 3251

Sikament® RB 3251 follows the requirements of ASTM C494; Types A & F and BS EN 934-2

Sulphonated naphthalene

12 months from date of production when stored properly

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +45°C. Mix well before use.

~1.13 kg/l (+25°C)

The standard rules of good concreting practice for production and placing must be observed when using Sikament® RB 3251 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 3251 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:
▪ Sikament®
▪ SikaPump®
▪ Sika® FerroGard®,
▪ SikaFume®
▪ SikaFiber®
▪ Sika® Aer
▪ Sika® Stabilizer
▪ SikaControl®

We recommend for trial mixes to be performed to establish the required performance when combining Sikament® RB 3251 with the above products or other admixtures. Please consult our Sika Technical Department for further assistance.

Sikament® RB 3251 should be added to the mix with the gauging water. No extension to the mixing time is necessary. Never add Sikament® RB 3251 to dry cement. When using Sikament® RB 3251 to produce flowing concrete at site using ready mix trucks, it can be added to the concrete via the feed hopper at the rear of the truck. Mix before discharge for 5 minutes at 10 rpm to produce a fully homogenous mix.

Sikament® RB 3251 is normally dispensed at a rate of 0.7 – 2.0 Iitres per 100 kg of total binder. Other dosages may 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.