ESSRBOND GS 500 is a hydrophobic injection grout based on polyurethane.
It reacts in contact with water to form a closed cell foam while expanding its
volume up to 27 times. The cured material is of a constant volume. Since
water is not a component of the foam structure, the cured material is
essentially not affected by water or dryness. It is also possible to be used as
Negative side application. It has excellent bond to the
contact surfaces. It has tendency of deep penetration
into hairline cracks.
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