4.4—Systems concept
When selecting a protection system, all factors affecting
the performance of that system on the structure need to be
considered in their entirety and not just the individual
components. This approach is defined as a systems
concept in ACI 515.1R. Some of the factors that should be
considered include:
• Protective materials;
• Interface of protective materials to concrete surface;
• Concrete to a depth of 40 mm (1.5 in.) (surface concrete);
• Concrete to a depth greater then 40 mm (1.5 in.);
• Structural considerations;
• As-built construction considerations (placement of
reinforcement);
• Exposure of concrete to elements;
• Stability of ground-supporting concrete (if applicable);
• Groundwater pressures (if applicable);
• Chemical exposures (if applicable); and
• Exposure to abrasion, erosion, and cavitation