The concrete exceeded all requirements significantly and provided a product that had noticeable, immediate and short term benefits to the contractor. Conversely, the A-4 deck work also proven to have certain negative aspects that need be considered to effectively evaluate working with the low permeability mix. Not nearly as labor intensive to provide impressive results. Higher compressive strengths are achieved earlier in the curing process. This reduces the time between adjacent deck pours or in building upon portions of substructure.
Productivity improves as a result of time and labor savings with respect to flashing operations.
Scheduled completion of the work can be improved as a result of reducing wait time involved in achieving minimum cure strengths. Higher ultimate compressive strength as well as lower permeability. Following removal of the curing system 2 layers of curing compound are to be applied, the second perpendicular to the first. As did the employing of this cure strictly on the low perm. There exist significant costs in terms of materials, time, and manpower resources that are associated with these changes.