Product Data Sheet Show all documents

SikaGrind®-870

Efficient grinding aid and quality improver for the production of cement

SikaGrind®-870 is a chloride free, liquid cement additive. SikaGrind®-870 is powered by Sika® ViscoCrete® to optimize the efficiency of modern separators and cement mills.

SikaGrind®-870 provides the following advantages in the cement production:
  • Increased production rate
  • Easier achievement of the desired cement fineness
  • Cost savings due to lower specific power consumption per ton
  SikaGrind®-870 provides the following advantages to the finished cement:
  • Increased early strength
  • Improved powder flow characteristics
 
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Product Data Sheet Show all documents

Usage

  • Increase the production rate of cement
  • Increase the early and final strength of cement

Advantages

SikaGrind®-870 provides the following advantages in the cement production:
  • Increased production rate
  • Easier achievement of the desired cement fineness
  • Cost savings due to lower specific power consumption per ton
  SikaGrind®-870 provides the following advantages to the finished cement:
  • Increased early strength
  • Improved powder flow characteristics
 

Packaging

1000 kg IBC
Bulk deliveries

Colour

Yellowish liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

SikaGrind®-870 is produced under Quality management systems according to EN ISO 9001.
Product Information

Chemical Base

Blend of polycarboxylates and amines

Shelf Life

At least 12 months shelf life from date of production if stored properly in undamaged, unopened, original sealed packaging.

Storage Conditions

Stored at temperatures between +5°C and +35°C. Protect from frost, direct sunlight and contamination.

Note: When delivered in bulk, the tanks and equipment used must be free from contaminants.

Density

1.07 ± 0.03 kg/l (at +20°C)

pH-Value

8.0 ± 1.0

Viscosity

< 35 mPas (at +20°C)

Total Chloride Ion Content

< 0.1 M%

Application

Application Information

Compatibility

Cements treated with SikaGrind®-870 are compatible in concretes produced with all commercial admixtures including air entrainers, water reducers, retarders and superplasticizers. The performance of concrete admixtures is not adversely affected by the use of SikaGrind®-870.

Dispensing

SikaGrind®-870 shall be added onto the clinker feed shortly before the mill entrance or directly into the grinding mill. Suitable dosage pumps with adjustable flow rates shall be used for accurate dosing.

Note: Periodically, the end of the additive tube/hose shall be checked to ensure that it is not blocked.
Consumption

Recommended Dosage

Typical dosage rates of SikaGrind®-870 are between 0.2 - 0.5 kg per ton of cement (0.02% - 0.05% of total weight = cement clinker + additions). The optimum dosage to achieve the desired characteristics shall be determined in plant trials. Influencing factors are e.g. the properties of clinker, type of cement and other plant variables.

For consistent results, SikaGrind®-870 must be accurately dispensed.

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