Grouts

Product Details:

Plasticised expanding grout admixture

Uses:

Cebex 100 is an admixture for cementitious grouts where a reduced water/cement ratio and positive expansions are required. Applications include bed grouting, duct grouting, non-shrink infilling and jointing.

Advantage:

• Gaseous  expansion  system  compensates  for  plasticshrinkage  and  settlement  in  properly  designedcementitious  grout.
• Reduced water/cement ratio mixes in the grout mix ensure slow permeability and long term durability in service.
• Gives grout high fluidity with low water/cement ratio, thusmaking placement or injection of the grout easy.
• No metallic iron content to corrode and cause staining ordeterioration due to rust expansion in the grout.
• Composition  allows  high  early  strength  development  ingrouts, without  the  use  of  chlorides.

Description

Cebex 100, a plasticised expanding grout admixture is supplied as a powder. The material is a combination of a plasticising agent and a gas producing expansion medium. The plastisicing agent allows the use of a reduced water/ cement ratio with consequent increased strengths and durability. The expansive medium counteracts the natural settlement and plastic shrinkage of the grout and aids stability and cohesion.

Specification clauses

Performance specification

All grouting (specify details and areas of application) must be carried out with a cement based grout incorporating a plasticised, expanding powder admixture. The grout admixture must be iron-free and chloride-free and shall be added to the cement grout in the proportion of 225g per 50kg of cement. The grout admixture shall provide an expansion of up to 4% in the plastic grout, by means of a gaseous system. The grout admixture must be stored, handled and mixed strictly in accordance with the manufacturer's instructions.

Application instructions

Mixing

For best results a mechanically powered grout mixer must be used. For quantities upto 50kg, a slow speed drill fitted with a hig shear paddle is suitable. Large quantities will require a high volume drum mixer. It is essential that machine mixing capacity and labour availability is adequate to enable the grouting operation to be carried out continuously. This may require the use of a holding tank with provision for gentle agitation to maintain fluidity. The selected water content should be accurately measured into the mixer. The cement (and sand if required) shall be slowly added to Cebex 100. Mixing shall be continued for 5 minutes, making sure that a smooth even consistency is obtained. 

Application

It shall be ensured that areas to be grouted are clean, sound, and then pre-wetted. The unrestrained surface area of the grout must be kept to a minimum. The grout shall be placed within 20 minutes of mixing to gain the full benefit of the expansion process. Usual placing or pumping procedures shall be adopted ensuring a continuous operation. 

Curing 
On completion of the grouting operation, any exposed areas which are not to be cut back should be thoroughly cured by means of water application, concure*  curing membrane or wet hessian.

Limitations

Cebex 100 is incompatible with High Alumina Cement.