Product Data Sheet Show all documents

Sikament®-561 M

(Formerly MRheobuild 561 M) 

                                                                                                           

  High range, water reducing superplasticiser for rheoplastic concretes

Sikament®-561 M is formulated from synthetic polymers specially designed to impart rheoplastic qualities to concrete.
A rheoplastic concrete is a fluid concrete with a slump of at least 200 mm, easily flowing, but at the same time free from segregation and having the same water / cement ratio as that of a low slump concrete (25 mm) without admixture.
Sikament®-561 M is chloride free.

Sikament®-561 M considerably improves the properties of fresh and hardened concrete.                
  • Reduced thermal peaks
  • High workability for longer periods
  • Lower pumping pressure
  • Delayed setting with longer workability
  • Higher ultimate strengths
  • Reduced permeability
  • Improved durability
Product Data Sheet Show all documents

Usage

  • Microsilica concrete
  • Mass concrete pours
  • Ready mixed concrete
  • Long-distance transport
  • Pumped concrete
  • Casting in hot climates
 

Advantages

Sikament®-561 M considerably improves the properties of fresh and hardened concrete.                
  • Reduced thermal peaks
  • High workability for longer periods
  • Lower pumping pressure
  • Delayed setting with longer workability
  • Higher ultimate strengths
  • Reduced permeability
  • Improved durability

Packaging

Sikament®-561 M is available in  210 litre drums, 1000 litre IBCs or in bulk.

Colour

Brownish liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

ASTM C-494 Type B, D and G
BS 5075 Part 1 and 3
Product Information

Shelf Life

Shelf life is 12 months from date of manufacture when stored in undamaged, unopened packaging.

Storage Conditions

Store under cover out of direct sunlight and protect from extremes of temperatures.

The freezing point is -2°C; Sikament®-561 M can be reconstituted if stirred, after leaving to thaw.

Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage and disposal advice consult your local Sika South Africa (Pty) Ltd Technical Services Department.

 

Density

1.120 -1.190

Flash Point

None

pH-Value

6.0 – 8.0
System information

Compatibility

Sikament®-561 M is compatible with all cements and most air-entraining agents meeting the ASTM standards. The addition of Sikament®-561 M and SikaControl-100 AER (air-entraining agent) to concrete is recommended where it is required to withstand freezing and thawing cycles.

      

Without the use of an air entraining agent the typical air content of the concrete is 1-2%, dependant on dosage
Technical Information

Concreting Guidance

Sikament®-561 M ensures that rheoplastic concrete remains workable in excess 3 hours at 20°C. Workability loss is dependent on temperature, and on the type of cement, the nature of aggregates, the method of transport and initial workability.

Application

Application Information

Dispensing

Sikament®-561 M is a ready-to-use liquid which is dispensed into the concrete together with the mixing water. The plasticising effect and water reduction are higher if the admixture is added to the concrete after 50 to 70% of the mixing water has been added.

The addition of Sikament®-561 M to dry aggregate or cement is not recommended. Automatic dispensers are available.


It is strongly recommended that concrete should be properly cured particularly in hot and dry climates.

 
Consumption

Recommended Dosage

Sikament®-561 M is normally dispensed at a rate of:

0.6 to 1.2% by weight of binder, dependant on ambient conditions and requirements.

For further information please consult your local Technical Services Department.

Documents