Product Data Sheet Show all documents

Sikament® MR-8

MID RANGE WATER-REDUCING AND SET RETARDING CONCRETE ADMIXTURE

Sikament® MR-8 is a superplasticizer for producing soft consistency concrete in hot climate and also a substantial water reducing agent for promoting ultimate strength.
Sikament® MR-8 complies with ASTM C494 type D & G.

Sikament® MR-8 provides the concrete properties:
As a superplasticizer with set retarding effect:
  • Highly effective without increased w/c ratio;
  • Lasting control of slump loss;
  • Controlled setting time;
  • Avoidance of cold joints;
  • No adverse effect on ultimate strength.
As a water reducer:
  • Strength significantly increased;
  • Allow substantial cement reduction compared to plain concrete;
  • Especially suitable for hot climate;
  • No excessive air entrainment;
  • No adverse shrinkage effect;
  • Improved surface finish.
Product Data Sheet Show all documents

Usage

Sikament® MR-8 is mainly suitable for the manufacture of concrete for RMC plants and site batch concrete.
Sikament® MR-8 is used for the following types of concrete:
  • Long hauls concrete;
  • Foundations;
  • Floor slabs;
  • Slender components with densely packed reinforcement;
  • Walls, columns, beams.
 

Advantages

Sikament® MR-8 provides the concrete properties:
As a superplasticizer with set retarding effect:
  • Highly effective without increased w/c ratio;
  • Lasting control of slump loss;
  • Controlled setting time;
  • Avoidance of cold joints;
  • No adverse effect on ultimate strength.
As a water reducer:
  • Strength significantly increased;
  • Allow substantial cement reduction compared to plain concrete;
  • Especially suitable for hot climate;
  • No excessive air entrainment;
  • No adverse shrinkage effect;
  • Improved surface finish.

Packaging

200 / 1000 L

Colour

Liquid / brown

Product Details

Product Information

Chemical base

Blend of Lignosulphonates and modified Polycarboxylates

Shelf life

12 months if stored properly in original unopened packaging

Storage conditions

Stored in dry conditions, protected from direct sunlight and at temperatures between +5 °C and +30 °C

Density

1.050–1.070 kg/l

(At 20 °C)
Technical Information

Concreting Guidance

Concrete placing: With the use of Sikament® MR-8, concrete of highest quality is being produced, however state of the art concrete technology, such as mixing, placing vibrating and curing must be respected and applied.
Curing: Effective measures for concrete curing must be followed.

Specific Advice

Sikament® MR-8 is added to the gauging water prior to its addition to the dry mix or added separately to the wetted concrete mix.
For optimum utilization of the ultra-high range water reducer we recommend a minimum wet mixing time of 60 seconds.
When adding the balance of the batching water to adjust concrete consistency this should be done after a minimum of 2/3 of the wet mixing time to avoid surplus water in the concrete.

Application

Application Information

Compatibility

Sikament® MR-8 may be combined with all Sikament, Sika® Aer, Sika® Pump, Sikacrete® PP-1 products, but must be added separately to the mix and not premixed prior its addition.
Sikament® MR-8 is compatible with all Portland cement types.
Consumption

Recommended Dosage

0.5–1.2 L per 100 kg of cement
Typical 0.7–1.1 L per 100kg

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