- This special provision increases the minimum Class F fly ash replacement percentage to 25% for mix design Option 1 and disallows mix design Options 6, 7, and 8. Required for all projects using Item 512 ''Portable Concrete Traffic Barrier'', beginning with the September 2009 letting.
Replaces SP512-001 . (Change Memo: de-31-09). Statewide Use.
- States that air-entrained concrete will not be required in precast concrete traffic barrier, unless otherwise shown on the plans. Required on all projects with Item 512 beginning with the March 2006 letting.
Replaced by SP512-002 . (Change Memo: de-55-05). Statewide Use.