Areas to be grouted should be prepared to ensure substrates are clean, sound, and then pre-wetted. The unrestrained surface area of the grout must be kept to a minimum. Place the grout within 20 minutes of mixing to gain the full benefit of the expansion process. Adopt usual placing or pumping procedures ensuring a continuous operation. Overdosing of Cebex increases expansion and may cause frothing.
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Temperatures above 20 0 C may slightly reduce these times. Compatibility : Cebex is compatible with all types of portland cement.
Cebex may be used in mixes containing certain other Fosroc admixtures. Fosroc shall be contacted for further information. The grout admixture must be iron-free and chloride-free and shall be added to the cement grout in the proportion of g per 50kg of cement. 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 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. Cleaning Grouts mixed with Cebex should be removed from tools and equipment with clean water immediately after use. Cured material should be removed mechanically or with Reebaklens, multi purpose cleaning agent. Limitations Cebex is incompatible with High Alumina Cement. Estimating Cebex is supplied in g packs.
Fosroc® Cebex 100