SU1173259A1 - Apparatus for determining mixture thickness - Google Patents

Abstract

DEVICE FOR DETERMINING THE DENSITY OF A MIXTURE, for example, a gypsum polymer, comprising a plate, a hollow cylinder and a device for squeezing the mixture out of a cylinder, characterized in that, in order to improve the measurement accuracy, the plate has a central opening for extruding the test mixture and is attached along the perimeter of the hole to the end of the hollow cylinder diameter equal to the diameter of the hole, and the end surface of the device for. extrusion is made of a material corresponding to the material of the plate. THX

Description

Phie. 1 1 The invention relates to instrument making and can be used to determine the thickness of mixtures, in particular gypsopolymer. The aim of the invention is to improve the measurement accuracy. FIG. 1, a schematic representation of the proposed device, a section; in fig. 2 - the same, top view. The device for determining the thickness of the mixture contains a glass plate 1 with a central hole 2. To eliminate bending and for centering, the plate is glued to a metal disk 3 with an internal hole diameter equal to the diameter of the hole in glass plate 1. Bottom around the perimeter of the hole 2 to a metal disk 3 ground floors: a cylinder of stainless steel 4 with a fitting device which is a rod 5 with a piston 6 and a stop 7. The tool for pressing can move along the axis of the cylinder 4 on the wheel rank equal length itoka 5. The diameter of the piston 5 is equal to the inner diameter of the cylinder 4 and the diameter of the holes 2 in the glass plate 1. The surface of the piston 6, kontaktirukntsa a mixture is made of the same material as the plate 1, for example of plexiglass. The device works as follows. In the lower position of the mounting tool, the hollow cylinder 4 is filled with a gypsum polymer mixture of a certain size. After that, the extrusion device is moved up to the surface of the glass plate I, so that the end surface of the extrusion device is exactly at the same level as the surface of the glass plate 1. For this. a cake on the surface of the plate 1, after which its diameter is measured. The size of the diameter of the mixture is judged. The proposed design makes it possible to carry out much more efficient experiments to determine the plasticity of gypsum polymer mixtures, especially with a progressive polymer gypsum ratio. Due to the complete extrusion of the mixture, the dispersion of indications is reduced to a minimum. Thus, the processing of static data is practically excluded. The spread on the disk more clearly reflects the plasticity of the composition. The results of the experiments to determine the diameter of the molten gypsum polymer composition are given in the comparative table. From the analysis of the above results, it follows that with a decrease in the liquid-solid ratio of the gypsum polymer mixture, the relative strength of the proposed device increases significantly less than in the prototype, which indicates the stability of the obtained results.

100

I. Gypsum

Caroamnan resin 2i

IS

Water

100 Gpps

Caroamide resin 2S

ten

Water 100

Gypsum Carbagvka resin 2}

Water5

0.4

0.3}

2.7

O.E

Claims (1)

DEVICE FOR DETERMINING THE DENSITY OF THE MIXTURE, for example, a gypsum-polymer mixture, including a plate, a hollow cylinder and a device for squeezing the mixture out of the cylinder, which requires that, in order to increase the measurement accuracy, the plate is equipped with a central hole for extruding the test mixture and attached to the perimeter of the hole to the end of the hollow cylinder with a diameter equal to the diameter of the hole, and the end surface of the device for. finishing materials in construction. M .: Stroyizdat, 1977, p. 1520. the pressure is made of a material corresponding to the material of the plate. FIG. 1