JPH04190138A - Method and apparatus for measuring relative adsorbing solution rate of powder material - Google Patents

Abstract

PURPOSE:To test and measure the relative adsorbing water rate of a powder material with high accuracy by separating the liquid component in a sample under the same air pressure condition by the centrifugal force due to the rotation of a rotary body. CONSTITUTION:A processing chamber 30 is provided on a machine stand 20 and a rotary disc 22 being a rotary body is provided on the rotary shaft 23 of a motor mechanism within the processing chamber 30. A plurality of sample setting parts 26 are arranged on the rotary disc 22 on the peripheral side thereof and container receiving members 24 are provided on both sides of the setting parts 26 in a freely tiltable manner. The lower parts of containers 10 are provided in the receiving members 24 in a freely detachable manner and the top parts of the containers 10 are set to open parts and an atmosphere open part is formed on a part of the bottom member 16 forming a filtrate receiving chamber of each of the containers 10. When the liquid component in the sample 11 received in each container 10 is separated when the rotary disc 22 is rotated and transferred to the filtrate receiving chamber, an intermediate cylindrical body 15 and the bottom member 16 are set to the same air pressure condition to smoothly separate a liquid. By testing and measuring the samples 11 in the containers under the same condition, the measured results of a plurality of the samples 11 are obtained under the same condition within a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention J The present invention relates to a method and apparatus for measuring the relative adsorption rate of water in granular materials, and a method and apparatus for measuring the relative adsorption rate of water in powder and granular materials. The object of the present invention is to provide a method and apparatus that can accurately measure the relative adsorbed liquid ratio of powder and granular materials such as coarse aggregate.

(Industrial application field) Powders such as cement, fly ash, blast furnace slag, and silica fume are mixed with each other, or these powders are mixed with fine aggregates such as sand, coarse aggregates, and aggregates such as fiber materials with water or other A technique for quantitatively measuring the relative standard adsorbed liquid ratio between materials in cases where mixtures are obtained in the presence of liquids.

(Prior art) To prepare mortar or concrete, which is a mixture of cement, sand, and other fine aggregates, as well as coarse aggregates and fiber materials, water or a liquid containing the necessary additives is used. It is necessary to knead the mixture. Is the same thing essential for the preparation of materials for manufacturing various ceramic products or obtaining other physical and chemical products?
It is well known that when making such adjustments, there is an adsorption phenomenon (on the other hand, a dispersion phenomenon) of the material particles in the presence of a liquid, as described above, and it is not possible to obtain the desired homogeneous preparation. . Such phenomena govern the strength, flow, breathing, and other properties of products obtained using such preparations, and also affect the transportation and other handling of the preparations. The same problem is observed not only in new formulations, but also in sludge, sludge, and other mixed materials such as sand grains, fibers, and other aggregate materials, and concerns regarding their transportation, handling, storage, etc. It has various problems.

Therefore, this adsorption phenomenon has been studied to some extent, but conventionally it has been understood merely theoretically or qualitatively as the relationship between the distances between particles, and has been studied in terms of the dispersed state or agglomerated state.

In the conventional general technical state as described above, the present inventors have proposed Japanese Patent Application No. 58-5216 (Japanese Unexamined Patent Publication No. 59-13116).
Publication No. 4) and Japanese Patent Application No. 58-245233 (Japanese Unexamined Patent Publication No. 1983)
-139407 Publication), and in particular proposed a test and measurement method for quantifying adsorbed liquid on the surface of fine aggregate used in concrete or mortar, and a method for adjustment using such test and measurement results. did. In other words, this prior art classifies liquids such as water adhering to the surfaces of particles or powders as described above into those that are retained between the particles due to capillary action and those that are adsorbed on the surfaces of the particles. In particular, we are trying to quantitatively test and measure the latter, and moreover, it is possible to efficiently measure multiple samples under the same centrifugal force conditions.
For this reason, when it comes to adjusting concrete and mortar as mentioned above, it is necessary to separate and understand what is understood to be the same liquid content, and to obtain the measurement results quantitatively based on the respective conditions. Since this is a device that closes the circuit, we have achieved revolutionary improvements in terms of crosstalk and adjustment.

Furthermore, the present inventors have disclosed in Japanese Patent Application No. 61-256789 (Japanese Unexamined Patent Publication No. 63-111014) that the ratio of the aggregate to the powder is changed regarding the mixture consisting of powder, liquid, and aggregate as described above. Prepare multiple samples, apply centrifugal force to each of these samples to remove liquid, and
Measure the liquid retention rate of the powder that changes linearly in slope as the ratio of aggregate to the powder changes, and measure the slope (tanθ1) formed according to this slope straight line and the change in the ratio of aggregate to the powder. We propose to calculate the relative adsorption liquid ratio of the aggregate in the above mixture (the value obtained by dividing the liquid content of the aggregate by the amount of aggregate), in an attempt to solve the above-mentioned technical problems.

(Problems to be Solved by the Invention) Conventional boat fishing techniques as described above involve measuring the water absorption rate, coarse particle rate, actual rate, etc. in the surface dry saturated state, for example, regarding finer aggregates as specified by JIS. It attempts to understand and adjust the liquid content of kneaded materials as described above using data, but when adjusting specific kneaded materials, it is impossible to accurately understand and control the physical properties of the kneaded materials. . In other words, it is well known that physical properties such as separation breathing properties, workability, pumpability, compaction properties, etc. are important for such kneaded materials, but even if the cement is the same, these physical properties may differ. On the other hand, even if the cement is the same, the properties of the resulting kneaded product will vary depending on the sand.

Furthermore, in order to densely fill and mold such a kneaded material, it is common to apply vibration treatment, but the behavior or change of the interfering material during such vibration treatment is based on the measured value according to the same JIS regulations. In most cases, they also differ significantly. In addition, when concrete is cast in a thick layer or concrete is cast or filled using a vertical formwork, the appearance of the poured or filled fresh concrete or mortar varies in various ways.

In addition, the present inventors divided the blended water for such kneading, made a part of it evenly adhere to the fine aggregate, added cement and mixed it for the first time, then added the remaining water and mixed it for the second time. By kneading, we have developed an advantageous technique that allows us to obtain a mixed material with less bleeding and separation, and excellent workability, and to considerably increase the strength and other properties of the resulting molded product under the same compounding conditions. Even if such new technology is adopted and is well received by the industry, the degree of the above-mentioned effects in the concretely obtained kneaded product will vary depending on the type of fine aggregate used.

In order to solve such problems, the above-mentioned Japanese Patent Application No. 58-5216 and Japanese Patent Application No. 58-24 were proposed by the inventors of the present invention.
In the prior art of No. 5233, an adsorbent liquid on the particle surface,
This method not only distinguishes between adsorbed liquids but also quantitatively elucidates the adsorbed liquid, and can be said to be an extremely effective method.

Also, the above-mentioned earlier patent application No. 1983-256789
No. 111014) further solves the problems of the prior art described above, reduces the variation, or accurately measures the adhering liquid or adsorbed liquid rate of each sample when considering these techniques. It's not easy to do. In particular, this technique is based on determining the gradient formed as the ratio of powder and aggregate changes with respect to the mixture, so it is necessary to measure multiple samples, and moreover, it is necessary to measure the accuracy. In order to increase the accuracy of measurement results, it is important to use as many samples as possible.

In addition, when it comes to specific test measurements, it goes without saying that individual differences should be excluded, but the test conditions given to each individual, such as the amount, speed, time, etc., should be uniform for all of the large number of samples as mentioned above. It is necessary to give a certain amount to the measurement results, and even a slight difference can subtly affect the measurement results, causing errors in accuracy and prediction results.

Furthermore, in the concrete industry, which requires a large amount of fine aggregate, the properties of natural materials such as sand that are used sequentially must change slightly, and it is difficult to measure such materials within a short period of time. Although it is essential for high-precision management, it is difficult to clarify the characteristics in a short time in relation to liquids such as water, and when it comes to sand as an aggregate of a certain amount, it is difficult to clarify the characteristics of the relationship with liquids such as water. Due to variations in properties and other factors, it is necessary to use a considerably large number of samples, and in order to obtain accurate results, it is necessary to carry out the above-mentioned difficult but accurate measurements each time. To some extent, it is extremely difficult to secure the accuracy and uniformity mentioned above and to obtain test measurement results within a short period of time that responds immediately to the progress of work at any given time, so it is most necessary to increase the frequency of measurement. ing.

"Structure of the Invention" (Means for Solving the Problems) The present invention has been developed based on repeated studies in view of the above-mentioned circumstances.
It was confirmed that the air pressure inside the sample material in a sealed container to prevent liquid from escaping changed during the centrifugal force test, disturbing the test conditions and causing measurement errors. This method succeeded in obtaining accurate test measurements by eliminating the causes of errors, and is as follows.

(1) A sample prepared by adding and mixing water and other liquids to powdered materials such as cement and fly ash and granular materials such as sand and other aggregates is stored in a filtrate storage chamber and an upper sample storage chamber equipped with a filter material. The container is tiltably mounted on a rotating member, and the liquid in the sample is separated under the same air pressure condition by the centrifugal force caused by the rotation of the rotating member, and the granular or powdered material is separated from the sample under the same air pressure condition. A method for measuring the relative adsorbed water rate of granular materials, characterized by determining the relative adsorbed liquid rate of the material.

(2) A sample obtained by adding and mixing water or other liquid to powdery materials such as cement or fly ash and granular materials such as sand or other aggregates is stored in a filtrate storage chamber and an upper sample storage chamber equipped with a filter material. A plurality of containers are prepared, these containers are tiltably provided on a rotating body, and the liquid content in the sample is separated by centrifugal force due to the rotation of the rotating body under the same air pressure conditions as the sample, The relative adsorption liquid rate of the above granular material or powdery material is determined, and the liquid retention rate that changes linearly as the ratio of the above powdery material and granular material changes is measured, and the slope line and the above powdery material are A method for measuring the relative adsorption rate of water in powder and granular materials, characterized by determining a gradient formed according to a change in the ratio of powder and granular materials.

(3) It has a storage chamber that accommodates a certain amount of a sample of powdered materials such as cement and fly ash and granular materials such as sand and other aggregates mixed with water and other liquids, and the lower part of the storage chamber is It has a plurality of containers in which filtrate storage chambers are formed through filtration media, and a rotating body driven by a driving mechanism, and a plurality of sample setting units are disposed on the circumferential side of the rotating body, A container receiving part for removably receiving the container is provided in the sample setting part so as to be tiltable, a pressure adjustment part is formed in the top of the container and the filtrate storage chamber to maintain substantially the same air pressure, and the rotation When a liquid is moved when centrifugal force due to rotation of the parts is applied to the sample in the container, the liquid in the sample is separated under the same air pressure condition and transferred to the filtrate storage chamber. A method for measuring the relative adsorption water rate of powder and granular materials.

(Operation) A container is prepared in which a sample is mixed with powdered materials such as cement and fly ash, and granular materials such as sand and other aggregates, with water and other liquids added and mixed, with a filter material arranged in the upper storage chamber. By providing it on a rotating member, the liquid component is separated by centrifugal force due to rotation of the rotating member.

By providing a container loaded with a sample and prepared so as to be tiltable relative to the rotating body as described above, centrifugal force acts on the container when the rotating body rotates, and the same tilted state is automatically obtained. Create smooth rotation test conditions with less or less unreasonable stress.

By separating the liquid component in the sample under the same air pressure conditions of the sample using the centrifugal force generated by the rotation of the rotating member as described above, the liquid component can be separated under the same conditions of centrifugal force and air pressure.

By testing and measuring each sample in a plurality of containers under the same conditions of sample amount, centrifugal force, and air pressure as described above, measurement results for a plurality of samples under the same conditions can be obtained within a short time.

A plurality of containers are used to store samples of powdered materials such as cement and fly ash, and granular materials such as sand and other aggregates, with water and other liquids added and mixed, with filter media arranged in the upper storage chamber. By preparing, it is possible to simultaneously adjust and prepare a plurality of samples with different mixing conditions as described above.

By testing and measuring each sample in a plurality of containers under the same conditions of centrifugal force and air pressure as described above, measurement results for a plurality of samples under the same conditions can be obtained within a short time.

A fixed amount of a sample obtained by adding water or other liquid to powdered materials such as cement or fly ash and granular materials such as sand or other aggregates is stored in a filtration storage chamber through a filtration medium. , and a rotating body driven by a driving mechanism, and by arranging a plurality of sample setting sections around the circumferential side of the rotating body, a plurality of samples can be set simultaneously in a single facility.

By providing a tiltable container receiving part for removably receiving the container in the sample setting part, the container loaded with the sample can be easily and quickly set on the rotating part. During rotation, the container tilts together with the container receiving body to achieve mechanically reasonable rotational operation and centrifugal force application.

By forming a pressure adjustment part to maintain substantially the same air pressure conditions at the top of the container and the filtrate storage chamber, the liquid movement that occurs when centrifugal force due to the rotation of the rotating body is applied to the sample in the container can be avoided. The liquid component in the sample is separated under the same air pressure conditions and transferred to the filtrate storage chamber.

(Example) To further explain the present invention as described above, the present inventors have clarified the physical property changes due to the above-mentioned aggregates, coarse aggregates, etc. regarding the above-mentioned kneaded material, and have succeeded in producing a kneaded material of stable quality. As mentioned above, we succeeded in obtaining the relative adsorbed water percentage of aggregates with high precision and using the measurement results to adjust the target kneaded material rationally and with high precision. This is similar to the earlier application, Japanese Patent Application No. 61-256789 (Japanese Unexamined Patent Publication No. 63-111014).

In other words, when using this prior art, it is possible to provide new data regarding fine aggregates, such as the relative adsorbed water rate and the relative standard adsorbed water rate that does not change even if the dehydration conditions are changed. A rational explanation can be made about the kneaded material used.

However, in order to determine the relative adsorbed water percentage using such a technique, it is necessary to separate the liquid components of multiple samples under the same conditions. The inventors have carefully considered the method of storing and sealing the sample in a container and subjecting it to centrifugal force treatment in order to separate the liquid under at least the same test conditions for the sample as described above, or have conducted a rational test measurement. Despite this, there remains a tendency that desirable accuracy cannot always be obtained in the measurement results. Therefore, it varies depending on slight differences in not only the centrifugal force conditions but also the sample length and other test conditions, and therefore, in specific test measurements, the sameness is required for all of these test conditions. As a result of further investigation into the reason why accuracy cannot be ensured sufficiently, it is estimated that pressure fluctuations occur during and before and after the centrifugal force is applied to the sample in the container, and this pressure change makes it difficult to maintain orderly conditions. It was determined that at least a partial disturbance occurred in the test conditions that had been formed.

Therefore, in the present invention, based on the results of such studies,
First, we propose a device as shown in Figure 1, with machine 2
A processing chamber 30 is provided on the processing chamber 30, and in the processing chamber 30, a rotary disk 22 serving as a rotating member is horizontally attached to a rotating shaft 23 of a driving mechanism 2 provided within the machine stand 20. Further, a plurality of sample setting sections 26 are recessed and disposed on the circumferential side of the rotary disk 22, and shaft supports 2 are provided on both sides of these sample setting sections 26.
A container receiving body 24 is provided so as to be freely tiltable so as to be opposed to each other at an angle of 5°25.

The container 10 or its lower part is removably installed in the container receiving body 24 described above, and the structure of one example of the container 10 is as shown separately in FIGS. 2 and 3. That is, the second
The assembled state is shown in the figure, and as shown exploded in FIG. A collar 18 is installed inside (the collar 18 part may be formed integrally with the bottom body 16), and a liquid retaining material 19 such as sponge or cotton is filled, and the collar 18 and this liquid retaining material 19 are filled. A perforated metal plate 14, a wire mesh material 13, and a filter material 12 such as filter paper as shown on the right side of FIG. A certain amount of a liquid mixture 11 of powder and granular materials and water is charged into the container, and the lid body 17 is made of an aperture 17a that communicates with the outside air and the inside of the container. .

If the mixture 11 has a small liquid content and poor fluidity, it may not have the lid body 16 as shown in FIG.

As described above, the container IO has an open part at the top of the container 10 and an atmosphere open part 16a in a part of the bottom body 16 forming a filtrate storage chamber. When transferring to the storage chamber, the intermediate cylinder body and the bottom body 16 are kept under the same air pressure condition, so that separation of the liquid can be made smooth and backflow of the liquid can be prevented.

However, the present invention does not necessarily require that the container 10 be vented to the atmosphere. That is, in the present invention, during the centrifugal force treatment, the surroundings (especially the upper and lower parts) of the sample mixture 11 in the container 10 are kept under substantially the same air pressure conditions, and for this purpose, the air pressure conditions are set to exactly match the atmospheric pressure. However, as shown in FIG. 5, a sealing material 20 such as an O-ring is used to isolate the inside of the container 10 from the outside air, but the pneumatic communication means 31 above and below the mixture 11 is also used. If the upper and lower sides of the mixture 11 are communicated by providing a pneumatic communication means 32 inside the container 10 for the purpose of use, or by providing a pneumatic communication means 32 outside the container 10 as shown in FIG. Therefore, it is possible to precisely realize an orderly separation action by the action of centrifugal force on the whole of the contained mixture 11.

Powder materials used in the present invention include Portland cements, alumina cement, magnesia cement, gypsum, limes such as slaked lime, blast furnace slag, special cements such as expanded cement, fly ash, silica fume, stone powder, and other inorganic or organic materials. There are various powders used for coagulation, filling, and bulking purposes. In addition, when coarse aggregate is used as the material to be measured, it is preferable to use sand or other fine aggregate as the powdered material in addition to such powder.

In addition, granular materials include fine aggregates such as river sand, sea sand, mountain sand, and crushed sand, coarse aggregates such as gravel and crushed stones, fibrous materials such as metal fibers and inorganic fibers, sound insulation, heat insulation, fire resistance, and nuclear power. There are various types of aggregates that are used to provide insulation, absorbency, lightness, weight, etc.

Furthermore, the liquid is water or a typical water reducing agent,
Widely used are one or a mixture of two or more of various auxiliary agents or additives such as thickeners, quick-setting agents, and plastics.

In the present invention, samples prepared by mixing the above-mentioned materials are prepared in a non-permeable state at least under the test conditions. That is, even if liquid separation was performed by applying centrifugal force to an air-permeable sample, the effect could not be obtained evenly, and the processing results tended to be non-uniform. On the other hand, in a sample filled in a container without air permeability under the centrifugal force test conditions, the liquid is evenly separated throughout.

It is also known that in a closed container, the space above the sample contained in the container is depressurized due to volume reduction due to the movement of liquid due to centrifugal force, creating a pressure difference between the top and bottom of the sample in the container, causing variations in test results. , these relationships can also be effectively interpreted according to the present invention using breathable samples such as those described above.

Furthermore, according to the present invention, even if there are variations in test conditions such as the sample amount and the height (thickness) of the sample in the container, it is confirmed that the variations are small, which makes test measurements easier and provides additional benefits. It is clear that there are significant advantages in utilizing the measured data obtained.

Therefore, the present inventors were able to accurately obtain measurement results under favorable control conditions even for a large number of samples by using an apparatus that utilizes centrifugal force as shown in FIGS. 1 to 4 described above. Of course, it is possible to efficiently separate and measure the liquid content of powder and granular materials using compact equipment. The container 10 specifically used has an inner diameter of 5 cmφ and a height of 11.5 cm.
using a vinyl chloride intermediate cylinder 15, a wire mesh 12 made of metal wire with a diameter of 0.15 mm, a filter paper 13 and a thickness of 1.6 mm.
However, the present invention is of course not limited to such a specific container.

Some specific measurement examples by the method of the present invention carried out using the above-mentioned apparatus and comparative examples thereof are as follows.

First, the physical properties of the granular material prepared by the present inventors and others in order to determine the relative adsorbed water rate and the test results for the sieve content are as shown in Table 1 below.

Table 1 First, as a comparative example, using the above crushed sand, the bottom body 16 and the lid body 17 were completely sealed with O rings and adhesive tape, and 300 g, 250 g and 2
00g of each paste and mortar (S/C=1-3)
were charged into the container 10 and subjected to a centrifugal force test of 438 G for 30 minutes, and the measurement results showed that the liquid retention rate changed linearly as the ratio of powdery material and granular material was changed. The slope β formed by the slope straight line and the change in the specific gravity of the nine powder particles is as shown in Table 2 below, and the W/C of paste and mortar is 55. % was adopted.

In Table 2, Wl is the amount of sample filled into the container 10, W2 is the weight including the container 1o after centrifugation, and W
3 is the weight of the container 10.

Table 2 Average value: 3.33% Standard deviation: 0.644 Coefficient of variation: 19.32% That is, according to the results of Table 2, Wl, W2. Is it natural for Wz to change?
The value varies from 2.76 to 4 depending on the amount of sample used.
03, and for this reason, as mentioned above, it was assumed that the test should be conducted while keeping the sample amount, sample height in the container, etc. constant.

With respect to the results of such comparative examples, it was found that either a bottom body and a lid body were used for the intermediate cylindrical body according to the present invention, or the bottom body and the lid body were not sealed, that is, an O-ring or a lid body was used. The results obtained without applying an airtight seal with adhesive tape are as shown in Table 4 below, and the paste W/C,
W, , W2 and W3 are respectively the same as those in Table 3.

Table 3 Average value: 3.08% Standard deviation: 0.075I Coefficient of variation - 2.43% In other words, when comparing the results in Table 3 with those in Table 2 above, the amount of sample used and the sample thickness Regardless of the variation in height, the β value is 3.01 to 3.16, which is a few tenths of that in Table 2, and the standard deviation is 0.644% to 0.0751%. It has been reduced by nearly one digit, and the coefficient of variation is 19.
There was a decrease of nearly one digit from 32% to 2.43%,
It was confirmed that valid measurement results could be obtained. In other words, at this level, it can be said that there is virtually no influence from changes in the sample amount.

In addition, similar tests were conducted repeatedly on this product five times to determine the standard deviation and coefficient of variation.The standard deviation was within the range of 0.065 to 0.082%, and the coefficient of variation was 2.32. ~2.56%, which was found to be sufficiently reliable.

Furthermore, the results of a similar test conducted with the bottom body and lid body completely open are separately shown in the following 4th section.
As shown in the table, even though the β value, standard deviation, and coefficient of variation were slightly inferior, it was confirmed that the results were still significantly improved compared to the results in Table 2.

Table 4 Average value: 3.39% Standard deviation: 0.176 Coefficient of variation: 5.20% In addition, in the case of Table 4 described above for the container IO shown in FIG. 5 in which the pneumatic communication means 31 is provided The same test and measurement operation was repeated 5 times, and the standard deviation was found to be 0.062 to 0.081%, with a coefficient of variation of 2.30.
It was ~2.52%.

Furthermore, for the container shown in FIG. 6, in which the air pressure communication means 32 is provided outside the container 10, the data from the test measurements shown in Table 4 were similarly carried out five times, and the standard deviation was found to be 0. .063-0.085%, coefficient of variation 2.30-2
．． It was 63%.

That is, it has been found that even when containers such as those shown in FIG. 5.6 are used, highly accurate test measurements can be made in exactly the same way as in the case of Table 4 described above.

"Effects of the Invention" According to the present invention as explained above, it is possible to test and measure the relative adsorbed water rate in powder and granular materials with high precision with less standard deviation and fluctuation rate, and it is possible to It is possible to obtain data that is almost unaffected by this type of powder and granular material, and thereby to appropriately and easily obtain rational and reliable elucidation, prediction, or planning and design for this type of powder and granular material, so it is industrially effective. This is a great invention.

[Brief explanation of the drawing]

The drawings show the technical contents of the present invention, and FIG. 1 is a side view showing the general structural relationship of the device according to the invention, FIG. 2 is a cross-sectional view showing how the container is assembled, and FIG. Fig. 3 is a cross-sectional view of the disassembled state, Fig. 4 is a cross-sectional view of the fully open type embodiment of the present invention, and Figs. 5 and 6 are closed type containers under substantially the same pressure conditions for the top and bottom of the sample. It is each sectional view about each embodiment made to do. In these drawings, 10 is a container, 11 is a mixture (sample), 12 is a filter material, 13 is a wire mesh material, 14 is a perforated metal plate, 15 is an intermediate cylinder, 16 is a bottom body, and 17 is a lid body. , 17a is the opening, 18 is the collar, 19 is the liquid retaining material,
20 is a device, 22 is a rotary disk, 23 is a rotating shaft, 24 is a container receiving part, 25 is a shaft support, 26 is a sample setting part, 31.32
indicates pneumatic communication means. Figure A

Claims (3)

[Claims] (1) A sample obtained by adding and mixing water and other liquids to powdered materials such as cement and fly ash and granular materials such as sand and other aggregates was stored in a filtrate storage chamber and an upper sample storage chamber equipped with a filter material. A container is prepared, the container is tiltably mounted on a rotating member, and the liquid component in the sample is separated under the same air pressure condition by the centrifugal force caused by the rotation of the rotating member, and the granular or powdery material is A method for measuring the relative adsorbed water rate of powder and granular materials, characterized by determining the relative adsorbed liquid rate of . (2) A sample obtained by adding and mixing water and other liquids to powdered materials such as cement and fly ash and granular materials such as sand and other aggregates was stored in a filtrate storage chamber and an upper sample storage chamber equipped with a filter material. A plurality of containers are prepared, these containers are tiltably mounted on a rotating member, and the liquid component in the sample is separated by the centrifugal force caused by the rotation of the rotating member under the same air pressure conditions as the sample, and the above-mentioned method is performed. The relative adsorption liquid rate of the granular material or the powdery material is determined, and the liquid retention rate, which changes linearly as the ratio of the powdery material and the granular material changes, is measured, and the gradient line and the liquid retention rate of the powdery material are calculated. , a method for measuring relative adsorption liquid ratio of particulate material, characterized by determining a gradient formed according to a change in the ratio of particulate material. (3) It has a storage chamber that accommodates a certain amount of a sample of powdered materials such as cement and fly ash and granular materials such as sand and other aggregates mixed with water and other liquids, and the lower part of the storage chamber is It has a plurality of containers in which filtrate storage chambers are formed through filtration media, and a rotating body driven by a driving mechanism, and a plurality of sample setting units are disposed on the circumferential side of the rotating body, A container receiving part for removably receiving the container is provided in the sample setting part so as to be tiltable, a pressure adjustment part is formed in the top of the container and the filtrate storage chamber to maintain substantially the same air pressure, and the rotation When a liquid is moved when centrifugal force due to rotation of the parts is applied to the sample in the container, the liquid in the sample is separated under the same air pressure condition and transferred to the filtrate storage chamber. A device for measuring the relative adsorption liquid ratio of powder and granular materials.