SIKACEM FLC 100

SikaCem® FLC 100 is a chloride free admixture in
powder form. It is added at the rate of 6% by weight
of cement to produce a flowable, pumpable, nonshrink, non-segregating, impermeable grout, providing
high strength and high bond to steel. The most important property SikaCem® FLC 100 imparts to grout is
the ability to protect cables against corrosion from aggressive agents and stress.
Inadequate protection against corrosion offered by
normal grouts is due to:
a) Excessive capillary microporosity due to high water/cement ratio. Using SikaCem® FLC 100 the
water/cement ratio is reduced to 0.3
b) High macroporosity caused by bleed water collecting under strands and in the upper part of the sheath.
When bleed water evaporates and is reabsorbed by
the cement paste, voids form thus providing easy access for corrosive substances. European recommendations on prestressed concrete (FIP) prescribe that the
volume of bleed water must not exceed 0.5%. With
the use of SikaCem® FLC 100, the volume of bleed water is considerably lower: it ranges from 0 to a maximum of 2% depending upon the type of cement used.

c) Shrinkage of cement paste and consequent cracking. With normal cement grouts final shrinkage varies
from 2 to 3mm. SikaCem® FLC 100 allows not only
shrinkage to be eliminated completely, but also slight
expansion to occur during setting and hardening.