Page 100 - Construction Waterproofing Handbook
P. 100
BELOW-GRADE WATERPROOFING 2.63
FIGURE 2.81 Clay system applied directly to shotconcrete foundation wall. (Courtesy of TC MiraDRI)
Bentonite clays are not particularly resistant to chemicals present in groundwater such
as brines, acids, or alkalines.
Bentonite material derivatives are now being added to other waterproofing systems
such as thermoplastic sheets and rubberized asphalts. These systems were developed
because bulk bentonite spray applications cause problems, including thickness control
and substrate adhesion. Bentonite systems are currently available in the following
forms:
