GLENIUM 270B 

GLENIUM 270B is a super-plasticizer of a new generation based on modified polycarboxylic ether polymers. It is designed for use in high quality ready mixed concrete, when superior performance is required, even under difficult conditions.

GLENIUM 270B combines exceptional long slump life with normal setting times. Its application is especially beneficial when used in hot climate or with demanding mix designs.

GLENIUM 270B does not contain added chloride and conforms to chloride ion limits required by concrete industry standards.

Chemistry

GLENIUM 270B is universally applicable and provides improved rheological properties for a wide-range of concrete mixes. Performance of GLENIUM 270B in concrete is superior to conventional superplasticisers due to its unique polycarboxylate ether design.

Conventional superplasticisers, such as those based on sulphonated melamine and naphthalene formaldehyde condensates, at the same time of mixing, become absorbed onto the surface of the cement particles. This absorption takes place at a very early stage in the hydration process. The sulphonic groups of the polymer chains increase the negative charge on the surface of the cement particle and dispersion of the cement occurs by electrostatic repulsion.

Contrary to conventional superplasticisers the dispersion mechanism of GLENIUM 270B is not only based on electrostatic repulsion but in addition also on steric hindrances. GLENIUM 270B achieves outstanding water reduction and workability retention without retardation of setting time.