Self consolidating concrete for precast prestressed concrete bridge elements

The proportioning plant inspector must be certain that all materials have been properly inspected and approved before permitting their use.Cement is normally accompanied by appropriate certification as described in Section 1019 of the Standard Specifications.(Sec 501.3.2) Optimized mix designs may have a reduction in cement of 0.5 sack per cubic yard from the table shown in Sec 501.3.6 of the Standard Specifications.

Representative samples may need to be sent to Construction and Materials for laboratory testing.

The mix shall be designed by absolute volume methods or an optimized mix design.

Optimized refers to a well graded combined aggregate gradation resulting in lower water demand, improved workability, and improved finishing characteristics.

The inspector must be provided information about source and type of aggregates intended for use, and mix proportions.

The inspector must be familiar with inspection procedures for determining moisture content, scale weights, and inspection of batching equipment, the performance of tests, and reports.

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