In concrete products in general and in those placed below the level of the ground level or in the vicinity of aquifers, in particular a constructive detail, moreover indispensable, such as the formwork spacers consisting of PVC tubulars, usually about 21 mm in diameter internal, constitutes a dangerous element of discontinuity, permeation and infiltration.
In fact, the water is located at the concrete-spacer interface, a place for differential shrinkage and frequent crawl spaces, an easy way of access and infiltration capable of seriously affecting the hermetic seal of the building.
The special characteristics of the Azichem hydro-expansive tires allow the protection to be extended to this true and constructive “Achilles heel”, through water-tight devices that are both easy to manufacture and economically advantageous, consisting of organically functional systems: the RINGSEAL T 21 hydro-expansive gaskets.
