Kelly ball test
Kelly ball test[′kel·ē ′bȯl ‚test]
A test for the consistency of concrete using the penetration of a half sphere; a 1-inch (2.5-centimeter) penetration by the Kelly ball corresponds to about 2 inches (5 centimeters) of slump.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Kelly ball test, ball test
A test which uses a device consisting of a metal plunger (having a hemispherical bottom) which is guided by side stirrups; indicates the consistency of fresh concrete by the depth of penetration when the plunger drops.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.