In concrete products in general and in those placed underground 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 finds inside the tubular elements (even in the presence of the usual closure plugs) an easy way of access and infiltration capable of seriously affecting the hermetic seal of the product.
The particular characteristics of the Azichem hydro-expansive rubbers allow to extend the protection to this real constructive “Achilles heel”, through water-tight devices that are easy to make and economically advantageous, consisting of organically functional systems: the CORKSEAL T21 hydro-expansive plug, used to permanently plug the holes caused by the PVC spacers.

 

 

CORKSEAL T21

CORKSEAL T­21 is a special sealing closure device for tubular formwork spacers, consisting of a rigid core made of polyamide plastic material and a corrugated cap in hydro-expansive rubber. The core of CORKSEAL T­21 is provided with special circular lamellas that surround it and that, if properly inserted into the spacer, provide a high pressure mechanical seal, so that the sealing element is not removed from the seat where it is placed even in the presence of negative thrust. CORKSEAL T­21's hydro-expansive cap is designed to ensure the hermetic sealing of the internal part of the tubular spacer.

CORKSEAL T21

CORKSEAL T­21 is a special sealing closure device for tubular formwork spacers, consisting of a rigid core made of polyamide plastic material and a corrugated cap in hydro-expansive rubber. The core of CORKSEAL T­21 is provided with special circular lamellas that surround it and that, if properly inserted into the spacer, provide a high pressure mechanical seal, so that the sealing element is not removed from the seat where it is placed even in the presence of negative thrust. CORKSEAL T­21's hydro-expansive cap is designed to ensure the hermetic sealing of the internal part of the tubular spacer.

Technical Data Sheet

Safety data sheet