WATCHEM SCC
SUPERPLASTCIZER FOR SELF COMPACTING CONCRETE (SCC) |
| DESCRIPTION |
Watchem SCC is specially formulated admixture based on modified carboxylic ether. It produces flowing concrete, that is able to consolidate under its own weight. It is supplied as reddish colored liquid, miscible with water. |
STANDARD
Confirms to the recommended values of developed test methods for SCC like Slump flow/ Spread , V funnel, L Box etc. Also it conforms to IS: 9103:1999 and ASTM –C 494M – 99a, 1999 Type G as slump retaining, retarding super plasticizer. |
SALIENT FEATURES
- Produces self compacting concrete, with controlled delay of slump loss and workability.
- Flowing yet very cohesive concrete is produced without bleeding and segregation , which can easily be pumped.
- High early strength due to high water reduction up to 30-40%.
- Improves impermeability & durability.
- Eliminates vibration & reduces labor cost & time.
- Can be placed in congested reinforcement.
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APPLICATIONS
- Precast & Ready mix concrete,
- Safe for use in pre-stressed and reinforced concrete,
- Hot weather concreting where rapid slump loss occurs,
- High Performance concrete.
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DIRECTIONS FOR USE
Watchem SCC is added to pre-wetted concrete mix, at a rate of 0.4 to 0.8 % by weight of Cementatious material . However actual site trials have to be carried out to determine the optimum dose for the intended application. The measured quantity of Watchem SCC is mixed with remaining 10-20 % part of gauging water and then added to the mix. For further assistance in optimum dosage, trials and design mix , please contact our Technical Service Department.
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COMPATIBILITY
Compatible with all types of cement. It is also compatible with other WATCHEM’S CONCRETE ADMIXTURES like Watchem VISCO –viscosity Modifying Admixture, but should be added separately. |
TYPICAL ANALYSIS
- Appearance - Reddish/ brown colored liquid
- pH - 6.0 to 8.0
- Sp. Gr. @ 30° c - 1.12 ± 0.03
- Chlorides : nil
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TECHNICAL DATA
The following results were obtained under normal laboratory conditions.
Mix Design : M-30
Cement - 350 Kg/m³. River sand - 848 Kg/m³
Fly Ash - 170 Kg/M³ Aggregate-10 mm – 272 Kg/m³
Crushed sand - 187 Kg/M³ Aggregate-20 mm – 253 Kg/m³
Water - 190 Ltr . W/c ratio - 0.367
DOSAGE : Watchem SCC - O.8 % bw of Cementatious.
Watchem RETARD - 0.3 % b wt of cementatious
WATCHEM VISCO -O.3 % bw of Total water.
Fresh concrete properties; |
Hardened concrete properties |
Slump Flow / Spread
0 min.- 680 mm
60 min. - 620 mm |
Compressive strength
3 days – 16 MPa
7 days - 24 MPa
28 days - 34 MPa |
V funnel - 7 seconds |
L box (h2 /h1) - 0.90 |
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PACKING
Watchem SCC is available in 1 & 5 Lts. HDPE / 9-16 MT Bulk |
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STORAGE
Watchem SCC should be stored preferably in shade and in original containers. It has a shelf life of 12 months when stored in cool , dry place. |
HEALTH & SAFETY
Watchem SCC is non toxic, non- hazardous . Usual precautions like wearing gloves and goggles when handling should be followed. Accidental splashes on skin and in eyes should be washed off with plenty of plain water.
If necessary seek medical advice. |
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