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| 1993 | |||
| Special Provisions | |||
| SP421-023 | RTF | PORTLAND CEMENT CONCRETE - Voids and replaces ''Mixing Water'' to adopt the National Standard (ASTM & AASHTO) requirements with some modifications that retain current TxDOT requirements. All projects with Item 421 (beginning with 01/00 letting). Replaces SP421-020 .Replaced by SP421-024 . Statewide Use. | |
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