| 摘要 |
PCT No. PCT/FI87/00129 Sec. 371 Date Mar. 30, 1989 Sec. 102(e) Date Mar. 30, 1989 PCT Filed Sep. 24, 1987 PCT Pub. No. WO88/02481 PCT Pub. Date Apr. 7, 1988.A method for the determination of the properties of mouldable materials, such as the granular and pulverous masses of fresh concrete, and stiff liquids, particularly for the determination of the plastic and reologic properties thereof. A sample of a known weight is taken from the mass; the sample is subjected to a moulding effect; and a compression (S) and the number of working revolutions required therefor are determined. In order that the behavior of the material to be measured can be controlled accurately during the measuring process and that the obtained measuring results are accurate and reliable, the sample is compressed in two axially opposite directions with a constant force (P); the sample is moulded under a constant compression between two parallel inclined planes which change the rotationally change the direction of inclination thereof; the volume (V and Vt) of the sample is measured prior to the moulding and after a determined number of working revolutions (n); and the magnitude of the torque resisting the rotational change in direction of inclination of the inclined planes is measured from the sample at least at one determined shear speed of the sample, which shear speed depends on the revolving speed of the inclined planes and the angle of incline thereof. |
