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22 This chapter provides an interpretation of the findings in terms of highway engineering practice. Recommendations for revisions to the AASHTO LRFD Specifications are presented in Attachment A. Suggested methods for testing SCC are described in Attachment C. Guidelines for quality control testing, acceptance specifications, and proportioning of SCC for precast, prestressed concrete bridge elements are provided in Attachment C. These guidelines can be of particular interest to bridge engineers and specifiers, concrete producers, testing laboratories, and manufacturers; will facilitate successful use of SCC; and will contribute to its acceptance. Adopting quality control measures for producing SCC leads to enhanced durability and longer life expectancy of bridge structures. Eliminating the need for vibration in precast bridge elements also provides a potential for enhancing the manufac- turerâs environmental, health, and safety conditions. The standard test methods and others (e.g., slump flow and T-50, J-Ring flow, column segregation, and VSI) can be used to assess workability characteristics of SCC. Based on this projectâs findings, filling capacity and surface settlement test methods are recommended for use in evaluating the filling capacity and static stability of SCC. C H A P T E R 3 Interpretation, Appraisal, and Application
