Protective Measures
Next to the water itself, concrete is the most important and widespread of materials used in watershaping.  Not only is it instrumental in creating the structures that contain water as well as the substructures that support them, concrete is also the stuff of which faux-rock panels, pre-cast or poured-in-place coping, pavers, all manner of stamped or textured decks and poured-in-place or block walls are made.  Despite its omnipresence, however, concrete remains one of the most misunderstood of all watershaping materials in this sense:  Because it is so durable in basic structural applications, there's a tendency to