| 摘要 |
PROBLEM TO BE SOLVED: To provide an aggregate settler allowing an operator using it to surely settle aggregate to a desired depth from the top surface of concrete to achieve uniform settlement of the aggregate. SOLUTION: The concrete aggregate settler comprises a float board 1 with a handle 3 provided on the upper surface thereof, and a number of hanging needle-like protrusions 2 aligned on the lower surface of the float board 1. When the needle-like protrusions 2 are sunk into concrete until the lower surface of the float board 1 makes contact with the top surface of the concrete, the aggregate in the concrete can be settled by the length of the protrusion 2.
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