Hello,
Could you be a bit more specific?
Which
bath is the
right one for which
sealing?
In sealing technology, two basic types are currently distinguished:
Surface seals, where materials applied on the earth-facing side of the construction are intended to prevent the ingress of moisture. Since almost exclusively bituminous materials have been used in the past, the term
Black Bath has become established for this type. Recently, sealing materials based on plastics are also used.
Rigid seals, where the supporting structure itself, in addition to its primary function of load transfer, also takes over the sealing tasks. To produce the water-impermeable concrete required for this, blast furnace cements are often used, which result in very light-colored building materials. This appearance has given the so-called "concrete cross-section sealing method" the name
White Bath. It should be mentioned in passing that additional plasters and slurries applied on the earth-facing side can also take over the function of sealing. However, this method is hardly widespread or is used as a supplement to the White Bath.
Another well-known but forgotten and now rediscovered form of sealing is the bentonite seal. This is a surface seal where the parts of the building that come into contact with moisture, such as walls and floors, are wrapped on the earth-facing side in bentonite sheets. Bentonite is a naturally occurring, highly swelling clay that exhibits a strong sealing effect against water even in thin layers. Due to its brown color, this form of sealing is logically called
Brown Bath.
While buildings in the USA have been protected against groundwater intrusion using bentonite for many years, this building material has so far mainly been used here in landfill construction. Only through the idea of producing and laying bentonite in sheets has this material gained importance again for building sealing.
This product is made by prehydrating (pre-wetting) bentonite. The patented process produces an extremely highly sealing, plastic bentonite clay. Besides having very high swelling capacity, the building material has very good mechanical resistance. The sealing effect is maintained even after repeated frost, thaw and dry/wet cycles. It is resistant to chemical attacks and biologically non-degradable.
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Kind regards