Desciption:

A blend of water soluble, high molecular weight polymers, supplied as a white powder. Cebex 653 is designed for addition to cementitious grout mixes to enable them to be placed in moving water conditions without excessive washout of cement. Cebex 653 is a tunnel annulus grout admixture used to produce an instantaneous gelation and fast set behind tunnel linings.

Uses:

•  Stabilisation of cement grouts for pumping into cavities or fissures subject to water flow
• Tunnel annulus grouting in soft ground or rock
•  Shaft grouting

Advantages:

•  Enables cement grouts to be used in moving water conditions
•  Reduced wash-out saves cement
•  Early invert support gives increased productivity in tunnel ring lining
•  Can be used in marine environments in contact with sea water
•  Gives production flexibility derived from controlled grout thixotropy