Rheomac GF320 

Features and Benefits

• Exceeds the performance specification for cable duct grouting.
• Very high flowability (as measured by the Flow Cone Test) without bleed water or with a very flowable mix.  Under vacuum, of 600mm Hg, over 90% of the water is retained by the flowable grout.  Inadequate water retention would allow water to separate from solid components when the grout is forced through strands of tendons.
• High mix water retention.  This is very important property imparts high cohesion to the very flowable mix.  Under vacuum, of 60mm Hg, over 90% of the water is retained by the flowable grout.  Inadequate water retention would allow water to separate from solid components when the grout is forced through strands of tendons.
• Absence of shrinkage, and expansion ranging from 200-800 um/m depending upon the type of cement used.
• Initial setting time in excess of 3 hours at +30°C.
• High early and ultimate strengths:  depending on the type of Portland cement used, strengths can range from 20-40 N/mm2 at 1 day and from 50-70 N/mm2 at 28 days.  Slightly lower values are obtained if pozzolanic or slag cements are used.