6.8 : 흐름표 테스트

The flow table test, used to find the workability of concrete and evaluate highly flowable concrete, involves an apparatus consisting of a wooden board topped with a steel plate, with a total weight of 35 pounds.

A hinge connects the board to a base, with each side of the board measuring 27.6 inches.

The upper board is designed to be lifted to a height of 1.6 inches, and the table has specific markings that guide where the concrete should be placed.

A truncated cone 8 inches high, with an 8-inch base diameter and a 5-inch top diameter, is filled with concrete. It is gently compacted, excess concrete is cleared away, and the cone mold is carefully removed after 30 seconds.

The table is jolted 15 times, with each jolt given at an interval of 4 seconds, causing the concrete to spread.

The average of the extent of spread parallel to the two edges of the table, measured after jolting, indicates the concrete's workability, with specific values corresponding to medium or high workability.