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Best Con A71 is a soluble Silica formaldehyde resin based
superplasticizer. lt has no air-entraining. A chloride free admixture
based on Silica fonnaldehyde, fomulated for the production of
rheoplastic concrete .Available as a liquid or in powder form
which must be dissolved in water prior to use.
A rheoplastic concrete is a fluid, but cohesive mix with a slump value
of at least 200mm. lt is virtuailly self compacting, but as the same
time free from segration and with a water/cement ratio as a no-slum
concrete with an nlmixture.