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Hopper flow factor tests

A useful approximation of B for a conical hopper is B = 22f/a, where a is the bulk density of the stored product. The apparatus for determining the properties of solids has been developed and is offered for sale by the consulting firm of Jenike and Johansen, Winchester, Massachusetts, which also performs these tests on a contract basis. The flow-factor FF tester, a constant-rate-of-strain, direct-shear-type machine, gives the locus of points for the FF cui ve as well as ( ), the... [Pg.1938]

Due to the desired thin layer of the mortar (about 10 mm), a very fluid but still sedimentation free mortar is needed. It was planned to fill the mortar into a textile formwork which is wrapped around the steel tower. Whether a certain mortar mixture is suitable to fill such a narrow space can be tested with a specifically developed testing formwork [8]. The initial mortar composition was successfully filled into the testing formwork, confirming the fact that the fresh mortar properties should not show dramatic changes by the addition of polymers. An important factor to determine a successful filling process is the hopper flow time of the mortar, from which conclusions concerning the viscosity and the workability of the mortar can be drawn. [Pg.152]

A material s flow function, which can be determined only by shear tests, is often strongly influenced by its temperature, time of storage at rest, moisture content and particle size distribution. A hopper s flow factor is a function of the effective angle of internal friction (6), wall friction angle (< w) and hopper geometry. [Pg.75]


See other pages where Hopper flow factor tests is mentioned: [Pg.142]    [Pg.278]    [Pg.28]    [Pg.3276]    [Pg.3282]    [Pg.43]    [Pg.175]    [Pg.10]    [Pg.7]    [Pg.107]    [Pg.65]   
See also in sourсe #XX -- [ Pg.277 ]




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