ACI SCC Testing Practice Questions - ACI Self-Consolidating Concrete Testing Technician Exam

During the slump flow test, the T50 time is:

The time, to the nearest 0.2 s, from first movement until the concrete spread first touches the 500-mm (20-in.) circle The total time from raising the mold until flow stops The time for concrete to drop 50 mm inside the slump cone The time required to fill the slump cone

Correct Answer:

The time, to the nearest 0.2 s, from first movement until the concrete spread first touches the 500-mm (20-in.) circle

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