sika fume ds

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Product Data Sheet

SikaFume ®DS

Concrete Additive

Product

DescriptionSikaFume® is a concrete additive in powder form based on silica fume technology.

Uses SikaFume® is used in Precast Elements , High Quality Concrete , Shotcrete for tunnels.

And other fields of concrete construction where great demands are required on the

quality of fresh and hardened concrete.

Characteristics /

AdvantagesSikaFume® contains extremely fine (0.15 µm) latently reactive silicon dioxide. The

presence of this substance gives greatly improved internal cohesion, water retention and

increased density when set. The fresh concrete becomes extremely soft and the pumping

properties are substantially improved. In the set concrete, the latently reactive silica fume

forms a chemical bond with the free lime.

The additional crystal formation and the fineness of SikaFume® produce a significantly mo

dense set cement matrix.

When used additionally with Sikament® superplasticiser, the concrete will show the

following properties:

• Increased durability

• High early strength

• Increased ultimate strength

• Increased resistance to abrasion

• Highly increased water tightness

• Highly increased gas tightness

• Highly reduced chloride diffusion

SikaFume® contains no chlorides or other potentially corrosive substances.

Product Data

Form

Appearance / Colour Grey to dark grey powder

Packaging 20 kg bags (bulk bag deliveries can be arranged) S I K A

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Storage

Storage Conditions /

Shelf life

12 months from the date of production if stored properly in original, unopened

and undamaged sealed packaging, in dry conditions at temperatures between +5°

and +30°C.

Technical Data

Chemical Base

(typical analysis)SiO2 > 85%

Specific surface ~ 20 m2 /gr

Size ~ 0.15 micron

Density 0.5 ± 0.1 kg/ltr (dr y bulk)

System Information

Application Details

Dosage 5 – 15% of cement content by weight. For optimum results in concrete, always

use in conjunction with retarder and superplasticiser or directly with a superplasticis

(such as Viscocrete Based Series or Sikament 170 ).

Application Instructions

Dispensing In order to achieve proper dispersion of the SikaFume® and to maximise the mix

consistency and admixture performance, the following dispensing sequence is recommen

Dry Mix Plant

1. Before batching, the truck should b e checked to ensure no water is in the drum

2. The required amount of bags of SikaFume® should be counted and certified by

the S.O. and batched in as the first ingredients.

3. 80% of the re quired added water should then be dispensed .

4. The weighed coarse and fine aggregates should be added next and lastly the cement

5. Superplasticiser should then be added.

6. The remaining part of the ‘calculated’ water shall be dispensed gradually until target slump

Is achived

Wet Mix Plant

1. SikaFume® shall be dispensed together with sand and aggregates.

2. 80% of the required added water shall be dispensed .

3. Superplasticiser is added after the total cement is batched.

4. The remaining part of the ‘calculated’ water is dispensed gradually until the target slump

Is achieved

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SIKA TUNNELINGAND MINING

Sika

For information and advice on the safe handling, stor age and disposal of chemical

products, users should refer to the most recent Material Safety Data Sheet

(available on request) containing physical, ecological, toxicological and other safety-

related data.

Sika products, are given in good faith based on Sika's current knowledge and experience

of the products when properly stored, handled and applied u nder normal conditions

in accordance with Sika’s recommendations. In practice, the differences in materia

substrates and actual site conditions are such that no warranty in respect of merchantability

of fitness for a p articular purpose, nor any liability arising out of any legal relationsh

whatsoever, can be inferred either from this information, or from any writt

recommendations, or from any other advice offered. The user of the product must test t

product’s suitability for the intended application and purpose.

Sika reserves the right to change the properties of its products. The proprietary rights

of third parties must be observed. All orders are acce pted subject to our current terms

of sale and delivery. Users must always refer to the most recent issue of the local

Product Data Sheet for the product concerned, copies of which will be supplied on request.

SIKA INDIA PVT LIMITED

620 DIAMOND HARBOUR ROAD ,COMMERCIAL COMPLEX –II

KOLKATTA -34 , Tel +91 33 24472448 , Fax +91 33 24472449

www.sika.in

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