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I I I I I I I I I I II I I I I I I I I , 346 PORTLAND CEMENT CONCRETE. (REV 9-21-05) (FA 12-6-05) (7-06) SECTION 346 (Pages 283-301) is deleted and the following substituted: SECTION PORTLAND CEMENT CONCRETE 346 346-1 Description. Use concrete composed of a mixture of portland cement, aggregate, water, and, where specified, admixtures, pozzolan and ground granulated blast furnace slag. Deliver the portland cement concrete to the site of placement in a freshly mixed, unhardened state. Obtain concrete from an approved concrete production facility meeting the production and Quality Control (QC) of concrete provisions of this Section and Chapter 9.2 of the Materials Manual Concrete Production Facilities Guidelines, which may be viewed at the following URL: www.dot.state.fl.us/specificationsoffice/materialsmanual/section92. pdf . If the concrete production facility's approval is suspended, the Contractor is solely responsible to obtain the services of another approved concrete production facility or await the re-approval of the affected concrete production facility prior to the placement of any further concrete on the project. There will be no changes in the contract time or completion dates. Bear all delay costs and other costs associated with the concrete production facility approval or re-approval. 346-2 Materials. 346-2.1 General: Meet the following requirements: Coarse Aggregate............................................. Section 901 Fine Aggregate * ............................................... Section 902 Portland Cement............................................... Section 921 Water............................................................. Section 923 Admixtures...................................................... Section 924 Pozzolans and Slag ...........................................Section 929 *Use only silica sand except as provided in 902-5.2.3. Do not use materials containing hard lumps, crusts or frozen matter, or that is contaminated with dissimilar material. 346-2.2 Types of Cement: Unless a specific type of cement is designated elsewhere, use Type I, Type IP, Type IS, Type IP (MS), Type II, or Type III cement in all classes of concrete. Use only the types of cements designated for each environmental condition in structural concrete. A mix design for a more aggressive environment may be substituted for a lower aggressive environmental condition. TABLE 1 BRIDGE SUPERSTRUCTURES Slightly Aggressive Moderately Extremely Aggressive Component Aggressive Environment Environment Environment Precast Su perstructure Type I or Type III Type I or Type III with Type II with Fly Ash March 2007 01000-88 03-4122.0