surname, attested from late 12c., probably meaning bald head; cf. Wyclif Stye up, ballard, where Coverdale translates Come vp here thou balde heade [2 Kg.2:23-24, where God kills 42 children for making fun of Elijah's lack of hair.]
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or rock layers moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. Comments.
The slump of a mix with the same aggregate, cement and water can vary significantly by adding an admixture. The admixture does not reduce the quality of the material. Slump and Vibration. Vibration is not allowed in the slump test procedures under ASTM, AASHTO or other test procedures.