Building core concrete floors as a "reused" material?

Office TI project in a downtown high rise building - rather than installing a finish floor product (e.g. carpet, VCT etc) throughout the entire space the design called for a grind a seal of the building core's original and existing concrete slab, as commonly seen in "creative office" designs. Being that this design decision resulted in a decrease of the virgin materials used to finish the space - can we pursue this credit based on the costs that would have otherwise been incurred to provide a flooring product throughout?