JP3124511U - Cement composition storage container - Google Patents

Abstract

The present invention provides a cement composition in which at least two components having different average particle diameters such as an SL material and a grout material are mixed and can be taken out with a substantially constant composition from the beginning to the end without separating each component. A container for storing the composition is provided.
A cement composition storage container 10 has a cement composition supply port 11 in an upper portion and a discharge port 12 in a lower portion, and the inside of the container is disposed between the cement composition supply port and the discharge port. A grid-like partition plate 13 is provided.
[Selection] Figure 1

Description

  The present invention relates to a cement composition storage container such as a cement composition silo and a cement composition construction truck tank.

  Conventionally, silos are used to store powder, and tank trucks are used to transport powder. Powder cement compositions also use silos for storage and tank trucks for transport.

  However, a cement composition is usually a mixture of two or more components (cement powder, aggregate, etc.) having different average particle sizes, and when this is extracted from the tank of a silo or tank truck, In some cases, the components are separated such that the material is discharged first and the cement powder is discharged later, so that the cement composition having a desired composition cannot be stably taken out. In particular, cement composition having self-leveling properties, that is, cement-based self-leveling material (hereinafter referred to as SL material), grout material, etc., cement fine powder having an average particle size of 5 to 100 μm and average particle size of 100 to 1500 μm. In the case of a cement composition containing a fine aggregate, it is difficult to prevent the separation of components and keep the composition uniform from beginning to end.

  The present invention has been made in view of such problems, and without separating each component, a cement composition in which at least two components having different average particle diameters such as SL material and grout material are mixed. It is an object of the present invention to provide a cement composition storage container that can be taken out from the beginning to the end with a substantially constant composition.

  The present invention relates to the following items.

1. A container for storing a cement composition in which at least two components having different average particle sizes are mixed,
It has a cement composition supply port at the top and a discharge port at the bottom.
A container for storing a cement composition, comprising a grid-like partition plate for partitioning the inside of the container between a supply port and a discharge port for the cement composition.

2. Among the components contained in the cement composition,
The average particle size of the component having the smallest average particle size is in the range of 5 to 100 μm,
2. The cement composition storage container according to 1 above, wherein the component having the largest average particle size has an average particle size in the range of 100 to 1500 μm.

3. ^3. The cement composition storage container according to 1 or 2 above, wherein a difference in true specific gravity between a component having a maximum true specific gravity and a component having a minimum true specific gravity is 5 g / cm ³ or less among components contained in the cement composition.

  4). The cement composition storage container according to any one of 1 to 3, which is a silo.

  5). 4. The cement composition storage container according to any one of the above 1 to 3, which is a tank of a cement composition construction truck.

  6). A truck for cement composition construction comprising the tank according to 5 above.

  According to the present invention, a cement composition, which is stored in a cement composition storage container and is mixed with at least two components having different average particle sizes, is substantially constant from the beginning to the end without separating each component. It can be taken out with the composition.

  When the cement composition is withdrawn from a cement composition storage container such as a silo or a truck tank, since the cement composition is discharged while flowing, particularly in the upper layer, the separation of components occurs due to the difference in particle size. It will be discharged from the big one. By dividing the inside of the cement composition storage container with a grid-like partition plate, the lateral flow of the cement composition is hindered, and component separation can be suppressed.

  One embodiment of a cement composition storage container (silo) of the present invention will be described with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of a silo for cement composition of the present invention, and FIG. 2 is a sectional view taken along the line A-A ′.

  The silo 10 for cement composition according to the present invention only needs to be divided into a lattice in the silo. The silo is divided between the cement composition supply port 11 and the lower discharge port 12 at the upper part of the silo. A grid-like partition plate 13 is provided.

  The partition plate may be in the form of a lattice, and is preferably an equidistant lattice as shown in FIGS. The lattice spacing is not particularly limited and can be determined as appropriate.

  The upper end of the partition plate is preferably as high as possible so that the cement composition can be supplied to the entire silo interior. On the other hand, it is preferable that the lower end of the partition plate is at the same height as the upper end of the inclined wall surface 14 of the hopper part whose cross section is reduced toward the discharge port 12 at the lower part of the silo.

  The silo for cement composition of the present invention as shown in FIG. 1 and FIG. 2 is provided in the silo where the cement composition is supplied from the supply port 11 with the discharge port 12 closed, and is provided with a grid-like partition plate. Stored in. Then, when necessary, the discharge port 12 is opened, and the cement composition is taken out therefrom. At this time, since the flow of the cement composition is hindered by the lattice-like partition plate 13 in the silo, the separation of components having different average particle diameters of the cement composition is suppressed, and the composition is stored with a substantially constant composition from the beginning to the end. The cement composition that has been used can be removed.

  Next, an embodiment of a cement composition construction truck provided with a cement composition storage container (tank) according to the present invention will be described with reference to the drawings. 3 is a longitudinal sectional view of the cement composition construction truck of the present invention, FIG. 4 is a plan view thereof, and FIG. 5 is a rear view thereof.

  The cement composition construction truck 20 of the present invention only needs to have a tank 24 for accommodating the cement composition, the interior of which is partitioned in a lattice pattern. The tank 24 has a cement composition supply port 21 in the upper portion and a discharge port in the lower portion, and is provided with a grid-like partition plate 23 that partitions the inside of the tank therebetween. In the cement composition construction truck shown in FIGS. 3 to 5, a screw feeder 22 is provided inside the tank 24, whereby the cement composition is sent from the tank 24 to a hopper 25 and a cement kneader (mixer) 26. It is supposed to be.

  Similar to the silo for cement composition of the present invention, the partition plate in the tank may be in the form of a lattice, and is preferably an equidistant lattice as shown in FIGS. The lattice spacing is not particularly limited and can be determined as appropriate.

  It is preferable that the upper end of the partition plate is as high as possible so that the cement composition can be supplied to the entire tank interior. On the other hand, it is preferable that the lower end of the partition plate is in the vicinity of the upper end of the outlet of the tank or the screw feeder 22 inside the tank.

  The cement composition construction truck 20 of the present invention is provided with a cement kneading device 26 and a necessary amount of cement composition from the tank 24 to the cement kneading device 26 so that a kneaded product (cement composition slurry) of cement and water can be produced. And a screw feeder 22 for supplying goods. Further, the cement composition construction truck 20 is provided with a water tank 27 for transporting and supplying water for kneading, and the water in the tank passes through a water supply pipe 29 by a water supply pump 28. It is supplied to the cement kneader 26.

  The cement composition construction truck of the present invention as shown in FIGS. 3 to 5 has a cement composition in a tank 24 provided by a grid-like partition plate 23 from a supply port 21 with a discharge port closed. Things are supplied. And after putting a predetermined amount of cement composition in the tank 24, the supply port 21 is closed and it moves to a construction site. After arriving at the construction site, when necessary, the lower outlet of the tank 24 is opened, and the cement composition is taken out therefrom. At this time, since the flow of the cement composition is hindered by the grid-like partition plate 23 in the tank, the separation of components having different average particle diameters of the cement composition is suppressed, and the cement composition has a substantially constant composition from the beginning to the end. Things can be taken out.

  The cement composition is then introduced into the cement kneader 26 under the control of the screw feeder 22. The cement kneading device 26 is supplied with water for kneading from the water tank 27 almost simultaneously while adjusting the amount of water supplied. The water for kneading is filled and transported in a water tank mounted on a cement composition construction truck, but may be procured on site and supplied to a kneading apparatus. The mixture of the cement and water kneaded by the cement kneader 26 becomes a cement composition slurry, and is discharged from the cement composition slurry storage hopper 30 to the outside through the slurry hose 32 by the slurry pump 31. The cement composition slurry storage hopper 30 may then be adapted to continue stirring the cement composition slurry. In addition, when the slurry pump with which the construction site is equipped can be used, the slurry pump 31 does not need to be provided.

  The cement composition construction truck shown in FIGS. 3 to 5 has a cement kneading device 26 and the like and is configured to produce a kneaded mixture of cement and water, but only transports the cement composition. If it is a track for the purpose, these may be omitted.

  Next, the cement composition to which the present invention is applied will be described.

  Examples of the cement composition to which the present invention is applied include self-leveling materials and grout materials.

  The cement composition to which the present invention is applied includes at least two components having different average particle sizes. The average particle size of the component having a small average particle size is preferably 5 to 100 μm, more preferably 8 to 80 μm, and particularly preferably 10 to 50 μm. The average particle diameter of the component having a large average particle diameter is preferably 100 to 1500 μm, more preferably 110 to 1200 μm, and particularly preferably 120 to 1000 μm. When the cement composition contains three or more components having different average particle diameters, it is preferable that the average particle diameters of the component having the smallest average particle diameter and the component having the largest average particle diameter are within the above ranges.

  When components having greatly different average particle sizes are mixed, a maximum peak based on the components is usually observed when the particle size distribution of the composition after mixing is measured.

The particle size distribution of the cement composition in which at least two components having different average particle sizes are mixed is shown in FIG.

  The particle size distribution of the cement composition is obtained by sieving the cement composition into a particle having a particle size of less than 150 μm and a particle having a particle size of 150 μm or more using a sieve having a sieve size of 150 μm. The particle size distribution measurement was performed using a SK Laser Micron Sizer LMS-30 manufactured by the company, and the particle size distribution was measured by sieving using particles having a larger sieve size than 150 μm.

  In the cement composition shown in FIG. 6, the maximum is about 24 μm and about 210 μm. What is maximized at about 24 μm is a group of fine particles mainly composed of cement powder, and the average particle size of the raw cement powder measured alone using an SK laser micronizer is 22 μm. Coarse particles mainly composed of aggregates are those having a maximum at about 210 μm, and the average particle diameter measured by conducting a sieving test on the raw material aggregates alone is 228 μm. The difference between these average particle diameters is 206 μm, and according to the present invention, such a cement composition can also be extracted from the cement storage container while maintaining a uniform composition.

  In addition, the cement composition to which the present invention is applied preferably has a maximum particle size of 5 mm or less, more preferably 4 mm or less, particularly preferably 3 mm or less. When the maximum particle size exceeds 5 mm, it tends to be difficult to keep the distribution of coarse particles in the cement composition uniform.

Among the components contained in the cement composition to which the present invention is applied, the difference between the maximum and minimum true specific gravity is 5 g / cm ³ or less, more preferably 4 g / cm ³ or less, particularly preferably 3 g. / Cm ³ or less is preferable. If the difference in true specific gravity exceeds 5 g / cm ³ , it may be difficult to stably prevent the separation of the components of the cement composition even when the cement composition storage container of the present invention is used.

With respect to the cement composition shown in FIG. 6, when the true specific gravity of each component was measured by Seisin Corporation MAT-7000, the cement powder was 3.2 g / cm ³ and the aggregate was 2.6 g / cm ^3. It was. The difference was 0.6 g / cm ³ .

  According to the present invention, such a cement composition can be stably extracted from the beginning to the end of the cement composition storage container while keeping the composition uniform.

It is a longitudinal cross-sectional view which shows an example of the silo for cement compositions of this invention. It is a cross-sectional view which shows an example of the silo for cement compositions of this invention. It is a longitudinal cross-sectional view which shows an example of the truck for construction of the cement composition of this invention. It is a top view which shows an example of the truck for cement composition construction of this invention. It is a rear view which shows an example of the truck for cement composition construction of this invention. It is a graph which shows the particle size distribution of a cement composition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Silo for cement composition 11 Cement composition supply port 12 Cement composition discharge port 13 Partition plate 14 Inclined wall surface 20 Cement composition construction truck 21 Cement composition supply port 22 Screw feeder 23 Partition plate 24 Tank 25 Hopper 26 Cement kneading Equipment (mixer)
27 Water tank 28 Water supply pump 29 Water supply pipe 30 Cement composition slurry storage hopper 31 Slurry pump 32 Slurry hose

Claims (6)

A container for storing a cement composition in which at least two components having different average particle sizes are mixed,
It has a cement composition supply port at the top and a discharge port at the bottom.
A container for storing a cement composition, comprising a grid-like partition plate for partitioning the inside of the container between a supply port and a discharge port for the cement composition. Among the components contained in the cement composition,
The average particle size of the component having the smallest average particle size is in the range of 5 to 100 μm,
The cement composition storage container according to claim 1, wherein the component having the largest average particle size has an average particle size in the range of 100 to 1500 µm. The container for storing a cement composition according to claim 1 or 2, wherein, among the components contained in the cement composition, the difference in true specific gravity between the largest and smallest true specific gravity is 5 g / cm ³ or less. .   It is a silo, The container for cement composition storage in any one of Claims 1-3.   It is a tank of the truck for cement composition construction, The container for cement composition storage in any one of Claims 1-3. A truck for cement composition construction comprising the tank according to claim 5.

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