Big Green: "greener" concrete

[Peter Reppe]

Dear all, especially the structural engineers among us:
Are the following specs for concrete for a small plaza area "green" enough?
(foot-traffic only, location Eugene, OR, i.e., occassional ground frost):
-100% crushed/recycled concrete as sub base;
-80% crushed/recycled concrete as aggregate;
-50% of the cementitous material to be class C flyash.

Can these percentages (for this type of application) be increased? By how
much?

Thanks a bunch,
Peter


-- 
SOLARC Architecture/Engineering, Inc.
223 W. 12th Ave.
Eugene, OR, 97401

Ph: 541.349.0966
Fx: 541.343.1533
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