this term refers to a test run on fresh concrete to determine the workability of a concrete mix. Slump is related to the water/cement ratio, with lower w/c ratio's normally producing lower slumps. A good target slump for residential concrete is about 5 inches. Lower slump concrete is dryer, and thus harder to handle and place - and this can lead to extra water being added to the concrete at the jobsite to make placement easier. A much better solution is to use chemical admixtures to increase the slump and workability without adding water.
A measure of the consistency of freshly mixed concrete in which a conical metal mold is first filled with fresh concrete, inverted, then lifted off the concrete. The distance the concrete settles measured to the nearest Â1/4 inch is the slump value. A high slump value is indicative of a wet or fluid concrete.
A measure of the consistency of plastic concrete relative to the amount it falls when a slump cone filled with concrete is lifted vertically. The slump cone is then placed beside the specimen of concrete and the number of inches from the top of the cone to the top of the of specimen of concrete is the slump. (see ASTM C143).
A measure of consistency and water content of freshly mixed concrete. Slump is the subsidence measured from a specimen immediately after removal of a cone shaped mold. See ASTM C 143. Unlike ready-mixed concrete, pavers are zero slump concrete because of low water content. They are not tested for slump.
An indication of the consistency of plastic concrete. It is the distance that freshly mixed concrete subsides when a conical mold (slump cone) is lifted from the test specimen. Increasing the amount of water in concrete will increase the slump, but an increased slump is not always an indication of higher water content.
1. The stiffness of the consistency of a concrete mix. 2. Test used to measure the consistency of concrete by determining how much a specified shape or size of a quantity of concrete will slump due to gravity when the sides are unsupported.
(1) The drop in the height of a cementitious material from its original shape when in a plastic state. (2) A standardized measurement of a plastic cementitious material to determine its flow and workability.
a mass movement process in which slope failure occurs on a usually curved slip surface and the unit moves downslope as an intact block, frequently rotating outward. Slumps appear as discrete block movements, often in place, whereas slides usually break up and travel downslope.
Slump is a type of mass wasting in which a mass of soil moves as a single unit down slope along a curved failure surface. This phenomenon is commonly seen along soil-dominated stream banks and highway margins.
the slipping or falling or a mass or rock or unconsolidated material, especially the vertical drop of a mass of rock along a cliff face after the supporting material at the base of the cliff has been undercut by erosion; the mass of fallen material. [AHDOS
Slump is a form of mass wasting event that occurs when loosely consolidated materials or rock layers move a short distance down a slope. When the movement occurs in soil, there is often a distinctive rotational movement to the mass, that cuts vertically through bedding planes (landslides take place along a bedding plane or fault). This results in internal deformation of the moving mass consisting chiefly of overturned folds called "sheath folds."
A spreading of material (solder paste, adhesive, thick film, etc.) after stencil printing but before curing. An excessive slump detracts from definition. If loss of definition is the result after reflow, it is cause for rework.