Page 70 - Construction Waterproofing Handbook

2.34 CHAPTER TWO

FIGURE 2.43 Civil structure cementitious waterproofing detailing. (Courtesy of Xypex)

slab-on-grade portion, then transitions to a positive system on the walls and ceiling structure.
This transfer from negative to positive is accomplished by applying the cementitious system con-
tinuously along the slab including the area beneath the exterior walls. Cove details packed with
the manufacturer’s materials occur at the floor-wall juncture. A cove is also used for additional
protection at the construction joint in the wall. It would be recommended that waterstop be used
at the wall floor juncture and the construction joint for the most complete envelope protection.
Figures 2.44 and 2.45 present typical detailing for cementitious systems on two other
civil projects, a sewage treatment digester and a swimming pool structure. Similar detail-
ing of cementitious systems can be easily transferred to other concrete structures below-
grade. Again, combining the proper use of waterstop, cove installations at structure weak
points (note the cove installation recommendations at pipe and other similar penetrations
in Fig. 2.46), and cementitious applications in accordance with manufacturer’s instructions
will result in watertight below-grade concrete structures.

FLUID-APPLIED SYSTEMS

Fluid-applied waterproof materials are solvent-based mixtures containing a base of urethanes,
rubbers, plastics, vinyls, polymeric asphalts, or combinations thereof. Fluid membranes are