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ASTM C360; AASHTO T183; California Test Method CTM533 The Ball Penetration Apparatus (Kelly Ball) determines the depth of penetration of metal weight into plastic concrete. The apparatus consists of a 30 lb cylinder with a hemispherical bottom and handle.
The Ball Penetration Apparatus (Kelly Ball) determines the depth of penetration of metal weight into plastic concrete. The apparatus consists of a 30 lb cylinder with a hemispherical bottom and handle. The stirrup or frame, guides the handle and acts as a reference for measuring the depth of penetration. The handle features graduations in quarter inch increments on one side and half centimeter increments on the other side.
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