Concrete raw material storage bag and concrete mixing method

Abstract

To provide a concrete raw material storage bag that allows concrete and mortar to be mixed inside thereof even without using a mixing container or a mixing tool.SOLUTION: A concrete raw material storage bag includes: a storage bag body that has its inside water-proofed and can be swung in various directions; a concrete aggregate and cement stored inside the storage bag body; and a water supply passage that is provided in the storage bag body and can supply water to the lower part of the storage bag body. The water supply passage is a tube-like member provided in the storage bag body, having such length that: the upper end thereof is approximately flush with the upper end of the storage bag or protrudes upward from the upper end of the storage bag while the bottom end thereof is positioned at the lower part of the storage bag body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a concrete raw material storage bag that can be transported so as to easily produce ready mixed concrete on-site, and a method for mixing concrete. [Background technology]

[0002] Conventionally, when mixing concrete using cement, it was necessary to use a container or a mixing tool for mixing and mixing concrete raw materials and water. Patent Document 1 discloses a bag containing powdered material that solves this problem. The problem of Patent Document 1 is to propose a bag containing powdered material such as dry mortar that does not require a mixing container such as a bucket, and the solution is a bag containing powdered material such as dry mortar, in which a convex bag part that can be cut off is formed on one side of the bag body, a zipper part that can be opened and closed is formed on the other side, and a seal part that closes the bag is formed on the outside of the zipper part, and the powdered material such as dry mortar is stored in the bag.

[0003] Therefore, the powder-containing bag of Patent Document 1 is a sealed bag having a zipper that can be opened and closed freely, and allows the powder-containing bag, such as dry mortar, to be mixed with water to create mortar. However, since the powder-containing bag cannot sufficiently mix mortar or the like by simply adding water, in order to mix the materials in the bag, a rod-shaped mixing tool or a bucket must be inserted from the outside of the bag (outside of the bag) to the inside of the bag (inside of the bag) and mixed. Therefore, there is a drawback in that after mixing, the insertion tip of the rod-shaped mixing tool or the bucket must be thoroughly washed and dried. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 8-244798 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above-mentioned conventional drawbacks, the present invention aims to provide a concrete raw material storage bag that can efficiently mix concrete aggregate, cement, etc. with concrete or mortar inside the bag without using a kneading tool that is inserted from the outside of the bag to the inside of the bag.

[0006] The above and other objects and novel features of the present invention will become more fully apparent from the following description taken in conjunction with the accompanying drawings. However, the drawings are for illustrative purposes only and are not intended to limit the technical scope of the present invention. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the concrete raw material storage bag described in claim 1 of the present invention comprises a storage bag body whose interior is waterproofed and which can be shaken in multiple directions, concrete aggregate and cement stored inside the storage bag body, and a water supply channel provided in the storage bag body and capable of supplying water to the lower part of the storage bag body, wherein the water supply channel is a tubular member provided inside the storage bag body and has an upper end that is approximately flush with the upper end of the storage bag or protrudes upward from the upper end of the storage bag, and has a length such that the lower end is positioned at the lower part of the storage bag body.

[0008] The concrete raw material storage bag according to claim 2 is composed of a kneading means incorporated in the storage bag body, and the kneading means is characterized in that when water is added to the storage bag body and the concrete aggregate and cement are kneaded, the storage bag body is shaken multiple times, thereby kneading the water, concrete aggregate and cement in a shearing manner.

[0009] The concrete raw material storage bag according to claim 3 is characterized in that at least a part of the water supply channel at its lower end is obliquely cut out.

[0010] The cement in the concrete raw material storage bag according to claim 4 is stored in a water-dissolving bag so as to be placed on top of the concrete aggregate.

[0011] The concrete mixing method described in claim 5 is characterized in that it comprises a water supplying step of supplying water via the water supplying path to a storage bag body having a lower inner surface, the inside of which is waterproofed and containing concrete aggregate and cement, and a mixing step of mixing the concrete aggregate and cement by shaking the bag body in multiple directions after the water supplying step. Effect of the Invention

[0012] As is clear from the above description, the present invention provides the following effects. (1) In each of the inventions described in claims 1 and 5, cement and concrete aggregates are stored inside a waterproofed storage bag body, and further, a water supply passage is provided near the bottom of the storage bag body to supply water. Therefore, by adding water and shaking the storage bag body, for example, left and right or front and back, multiple times, the water is distributed throughout the concrete raw materials, and ready-mix concrete, mortar, etc. can be produced without using external buckets or mixing equipment, etc. (2) The invention described in claim 2 has the same effect as the above (1), and by further providing a mixing means, the concrete can be efficiently sheared and mixed. (3) The invention described in claim 3 also provides the same effects as those described above in (1) and (2), and since the lower end of the water supply passage is cut out at an angle, water can be efficiently supplied near the bottom surface of the storage bag body. (4) The invention described in claim 4 can obtain the same effects as those of the above (1) to (3) and can also reliably prevent moisture from adhering to the cement during storage, transportation, etc. [Brief description of the drawings]

[0013] 1 to 5 are explanatory diagrams showing a first embodiment of the present invention. 6 to 9 are explanatory diagrams showing a second embodiment of the present invention. 10 to 13 are explanatory diagrams showing a third embodiment of the present invention. [Figure 1] 1 is an explanatory diagram showing a concrete raw material storage bag according to a first embodiment, as viewed from the front. [Diagram 2] 1 is a longitudinal sectional view of a concrete raw material storage bag showing a first embodiment. [Diagram 3] FIG. 4 is an explanatory diagram of a storage bag body, a water supply channel, and a kneading means. [Figure 4] FIG. [Diagram 5] 1 is a process diagram of a concrete mixing method showing a first embodiment. [Figure 6] FIG. 6 is a longitudinal sectional view of a concrete raw material storage bag showing a second embodiment. [Figure 7] FIG. 4 is an explanatory diagram of a storage bag body, a water supply channel, and a kneading means. [Figure 8] FIG. [Figure 9] 5 is a process diagram of a concrete mixing method showing a second embodiment. [Figure 10] FIG. 11 is a longitudinal sectional view of a concrete raw material storage bag showing a third embodiment. [Figure 11] FIG. 4 is an explanatory diagram of a storage bag body, a water supply channel, and a kneading means. [Figure 12] FIG. [Figure 13] 11 is a process diagram of a concrete mixing method according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings. In a first embodiment for carrying out the present invention shown in Figs. 1 to 6, reference numeral 1 denotes a concrete raw material storage bag (hereinafter referred to as "storage bag") of the present invention capable of storing concrete raw materials 2 therein.

[0015] 1 and 2, this storage bag 1 is composed of a storage bag body 3 whose inside is waterproofed, concrete raw materials 2 consisting of concrete aggregate 4 and cement 5 stored inside the storage bag body 3, a kneading means 6 provided inside the storage bag body 3, and a water supply channel 13 that can supply water to the lower part of the storage bag body 3. The lower part of the storage bag body 3 refers to the part below the center of the storage bag body 3 in the height direction (the vertical direction in FIG. 1).

[0016] The storage bag body 3 is made of a material such as craft paper, polyethylene, polypropylene, etc., formed into a bag shape, and when a paper or cloth material such as craft paper is used, the inside is waterproofed with resin, etc. This storage bag body 3 is formed in a shape that can be lifted by hand or with a tool and swung in multiple directions, and in this embodiment, it is large enough to store about 20 kg of concrete raw materials 2, and is formed in a substantially square or rectangular shape when viewed from the front. In this embodiment, the storage bag body 3 is formed into a bag shape of about 450 mm x 670 mm by welding or sewing the periphery of a rectangular material such as polyethylene, and in this embodiment, the bag shape is formed by welding. The storage bag body 3 is sealed with the concrete raw materials 2 stored therein when sold, stored, or transported.

[0017] The water supply passage 13 is provided inside the storage bag main body 3, and is a tubular member having an upper end that is approximately flush with the upper end of the storage bag 3 or protrudes upward from the upper end of the storage bag, and a length such that the lower end is positioned at the lower part of the storage bag main body.In this embodiment, the water supply passage 13 is formed into a vertically elongated cylindrical shape with an open lower end that is arranged to follow the welded portion on the side of the storage bag main body 3.

[0018] The water supply channel 13 is made by folding the same material as the storage bag main body 3 into a vertically long cylindrical shape and fixing the open end by welding to form a cylindrical shape. It is preferable to weld the vertically long cylindrical water supply channel 13 together when welding the sides of the storage bag main body 3.

[0019] In this embodiment, the entire one side surface and the upper end of the water supply channel 13 are welded to the inside surface of the storage bag main body 3, but for example, the vicinity of the lower end and the vicinity of the upper end may be welded. In this case, for example, after welding the bottom surface and side surface of the storage bag main body 3 near the lower end, the water supply channel 13 is stored so that the position of the corner of the inner surface of the storage bag main body 3 and the corner of the water supply channel 13 are aligned, and this corner is welded at an angle together with the storage bag main body 3 so as not to block the water discharge port 13b. For the vicinity of the upper end, it is desirable to weld the vicinity of the upper end of the water supply channel 13 together with the storage bag main body 3 when sealing the storage bag main body 3.

[0020] In this embodiment, the upper end of the water supply channel 13 is formed to protrude above the upper end of the storage bag body 3, but the upper end of the water supply channel 13 and the upper end of the storage bag body 3 may be welded so as to be flush with each other. In such a case, the length (vertical dimension) of the water supply channel 13 may be formed to be approximately the same as the internal height (vertical dimension) of the storage bag body 3, or the length of the water supply channel 13 may be made longer than the internal height of the storage bag body 3, a part of the middle part of the water supply channel 13 may be folded in an accordion-like shape, and the upper end of the water supply channel 13 may be welded together with the upper end of the storage bag body 3. By folding and welding the water supply channel 13 in this manner, when the storage bag body 3 is opened and water is poured in, the water supply channel 13 can be made to protrude above the storage bag body 3, and water can be poured in efficiently.

[0021] In this embodiment, a water inlet 13a at an upper end of the water supply channel 13 is provided so as to protrude slightly above the upper end of the storage bag body 3. The upper end of the water supply channel 13 is sealed by welding or the like.

[0022] In this embodiment, the lower end of the water supply passage 13 is formed to a length that positions it near the bottom of the storage bag body 3, and a portion of the water discharge port 13b is cut out at an angle to form a notch 17. By providing such a notch 17, the cross-sectional area of ​​the lower end of the water supply passage becomes large, and water is also discharged in the lateral direction, so that water can be supplied efficiently. It is also possible to form the notch 17 by cutting out the entire lower end of the water supply passage 13 at an angle.

[0023] Furthermore, it is desirable to provide a sealing means 9 near the upper end of the water supply channel 13, which can be resealed after opening the water supply channel 13. As the sealing means 9, a zipper, a hook-and-loop fastener, a double-sided tape, or the like can be used, and by using such sealing means 9, mixing can be performed in a sealed state, and concrete raw materials, etc. can be mixed without spilling.

[0024] In this embodiment, the water supply passage 13 is provided inside the storage bag main body 3, but it may also be configured, for example, such that the water supply passage 13 is provided outside the storage bag main body 3 and the water discharge outlet 13b is connected to the lower part of the storage bag main body 3.

[0025] The concrete raw materials 2 can be changed as appropriate depending on the specifications of the ready-mix concrete (including mortar) to be produced. When producing concrete, coarse aggregate 4a, fine aggregate 4b, and cement 5 are stored as the concrete aggregate 4, and when producing mortar, fine aggregate 4b and cement 5 are stored as the concrete aggregate 4.

[0026] When storing the coarse aggregate 4a, the fine aggregate 4b, and the cement 5, it is preferable to layer the fine aggregate 4b, the coarse aggregate 4a, and the cement 5 in this order from the bottom of the storage bag body 3. It is also preferable to store the cement 5 in a water-soluble bag 10 that is water-soluble and placed on top of the coarse aggregate 4a.

[0027] In this embodiment, a kneading means 6 is provided inside the storage bag body 3. When water 11 is added to the storage bag body 3 and the concrete aggregate 4 and cement 5 are kneaded, the kneading means 6 can knead the water, concrete aggregate, and cement in a shearing manner by tilting the storage bag body 3, and in this embodiment, the kneading means 6 is composed of a string member 7 having one end fixed near the upper part inside the storage bag body 3 and a ball member 8 fixed to the other end of the string member 7. In this embodiment, two kneading means 6 are provided. Only one kneading means 6 may be provided inside the storage bag body 3 according to the amount of the concrete raw material 2, or three or more may be provided.

[0028] The string member 7 has a strength sufficient to not break even when the concrete raw material 2 and water are mixed, and is made of hemp string, metal fiber formed into a string shape, high-strength resin formed into a string shape, or the like.

[0029] The ball members 8 are generally spherical members made of resin or metal, etc., with a certain weight, and in this embodiment, a generally spherical ball member 8 is used, which is made by combining three generally disk-shaped plastic plates so that they intersect at right angles (for example, along the XY, YZ, and ZX planes). By using such ball members 8, the concrete raw materials 2 can get into the spaces between the ball members 8, and the concrete raw materials 2 can also be sheared by the ball members 8. In this embodiment, by using the ball member 8 made of resin having a certain degree of flexibility, it is possible to prevent the storage bag main body 3 from being damaged.

[0030] When manufacturing the concrete raw material storage bag 1 of the present invention, the lower end and side of the storage bag body 3 are sealed by welding or the like, and the upper end of the string member 7 is fixed near the upper inside of the storage bag body 3. When welding the side of the storage bag body 3, the water supply channel 13 is also welded. Next, the concrete aggregate 4 is stored in the storage bag body 3. When aggregate 4a and fine aggregate 4b are used, it is preferable to store the fine aggregate 4b and the coarse aggregate 4a in this order from the bottom of the storage bag body 3. Next, the cement 5 stored in the water-dissolving bag is placed on top of the concrete aggregate 4. Although the cement 5 is stored in the water-dissolving bag 10, a sheet-shaped water-dissolving member may be laid on top of the concrete aggregate 4 and the cement 5 may be stored on top of it, or the cement 5 may be directly stored on top of the concrete aggregate 4 without using a water-dissolving member or the like.

[0031] Thereafter, the upper end of the storage bag body 3 and the upper end of the water supply channel 13 are sealed by welding or the like to make the inside hermetically sealed. Incidentally, in this embodiment, the upper end of the string member 7 is fixed near the upper inside portion, but the upper ends of the string members 7 may be welded together when sealing the upper end of the storage bag body 3 by welding or the like.

[0032] The concrete mixing method 14 using the concrete raw material storage bag 1 of the present invention is composed of a water supply process 15 in which water is supplied via a water supply channel 13 to the lower inner surface of the storage bag body 3, which in this embodiment is near the bottom surface, and a mixing process 16 in which the concrete aggregate 4 and cement 5 are mixed by shaking the storage bag body 3 in multiple directions after the water supply process 15.

[0033] In the water supplying step 15, first, the upper end of the water supply channel 13 is cut or otherwise opened, and a predetermined amount of water is injected into the vicinity of the bottom surface inside the storage bag body 3 through the water supply channel 13. Thereafter, the water inlet 13a at the upper end of the water supply channel 13 is sealed by the sealing means 9.

[0034] In the kneading step 16, the storage bag body 3 is lifted and shaken multiple times in multiple directions, such as left and right and front and back, so that the water and concrete raw materials 2 are efficiently kneaded by the kneading means 6 to produce ready-mix concrete 12.

[0035] Although the cement 5 is sealed in the water-dissolving bag 10, when the water mixes with the concrete aggregate 4 and the moisture reaches the water-dissolving bag 10, the water-dissolving bag 10 dissolves and the cement mixes with the concrete aggregate 4.

[0036] In this way, since there is no need to use an external container or tool for kneading separate from the storage bag body 3, the storage bag body 3 can be simply discarded after kneading, eliminating the need to wash the container or tool, making post-processing extremely easy.

[0037] [Different modes for carrying out the invention] Next, different embodiments for carrying out the present invention will be described with reference to Figures 6 to 13. In describing these different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention will be designated by the same reference numerals, and duplicated descriptions will be omitted.

[0038] The second form for carrying out the present invention shown in Figures 6 to 9 mainly differs from the first form for carrying out the present invention in that the kneading means 6A uses a metallic, approximately spherical ball member 8A, and a water supply passage 13A formed of a resin pipe is provided inside the storage bag body.Even with a concrete raw material storage bag 1A using such kneading means 6A and water supply passage 13A, and a concrete mixing method 14A which performs a water supply step 15A and a kneading step 16A using such water supply passage 13A and kneading means 6A, it is possible to obtain the same effects as the first form for carrying out the present invention.

[0039] In this embodiment, a water supply path 13A formed of a resin pipe such as polyvinyl chloride is housed inside the storage bag body 3, and in the water supply step 15A, water is supplied to the vicinity of the bottom surface of the storage bag body 3 through the water supply path 13A formed of this resin pipe. In this embodiment, since a resin pipe is used as the water supply path 13A, the concrete raw materials 2 are not crushed even when the concrete raw materials 2 are stored therein, and water can be supplied more easily.

[0040] The water supply passage 13A may be long enough to be stored entirely in the storage bag body 3, but may be slightly longer than the height of the storage bag body 3 and may protrude slightly upward from the upper end of the storage bag body 3. In this case, it is preferable to extend a part of the storage bag body 3 upward to seal the water supply passage 13A. In this embodiment, the notch 17 is not formed in the water outlet 13b, but the notch 17 may be formed as in the first embodiment.

[0041] This water supply channel 13A may be provided in a fixed state in the storage bag body 3, but it is preferable that it is provided (contained) in a state in which it can move freely. By providing it in this manner, when performing the kneading step 16A, kneading can be performed with the water supply channel 13A removed.

[0042] Furthermore, in the kneading step 16A of this embodiment, by using the heavy metal ball members 8A, the force with which the ball members 8A move vertically due to gravity during kneading is increased, allowing for more efficient kneading.

[0043] In the third form for carrying out the present invention shown in Figures 10 to 13, the main difference from the first form for carrying out the present invention is that a kneading means 6B is used that does not have a ball member, and even with a concrete raw material storage bag 1B using such kneading means 6B and a concrete mixing method 14B in which a kneading step 16B is performed with such kneading means 6B, it is possible to obtain the same effects as in the first form for carrying out the present invention.

[0044] 9, in this embodiment, one end of the string member 7 is fixed near the upper part inside the storage bag main body 3, and the other end of the string member 7 is fixed near the lower part of the opposite side by welding or the like, so that the string member 7 is fixed so as to connect diagonals of the storage bag main body 3 in side view. When multiple string members 7 are fixed inside the storage bag main body 3, the multiple string members 7 can be arranged to cross each other in side view to enable more efficient kneading.

[0045] In the embodiments of the present invention, a ball member is provided at the tip of the string member, but as in the third embodiment, a ball member may not be provided, or a member having a shape other than a ball may be fixed to the lower end of the string member as the kneading means.

[0046] In addition, the upper end of the water supply passage is arranged to protrude slightly upward from the upper end of the storage bag body, but the upper end of the storage bag body and the upper end of the water supply passage may be formed so as to be approximately flush with each other.

[0047] Furthermore, although the embodiment of the present invention has been described with a kneading means, it is not necessary to provide a kneading means. Even if a kneading means is not provided, water can be supplied to the vicinity of the bottom surface of the storage bag body through the water supply passage, so that the concrete raw material can be sufficiently kneaded. [Industrial Applicability]

[0048] The present invention is utilized in industries such as those producing concrete raw materials. [Explanation of symbols]

[0049] 1, 1A, 1B: concrete raw material storage bag, 2: concrete raw material, 3: storage bag body, 4: concrete aggregate, 5: cement, 6, 6A, 6B: kneading means, 7: string member, 8, 8A: ball member, 9: sealing means, 10: Water dissolving bag, 11: Water, 12: ready-mix concrete; 13, 13A: water supply channel; 14, 14A, 14B: Method of mixing concrete; 15, 15A: water supplying process; 16, 16A, 16B: kneading process; 17: Cutout.

Claims

1. A concrete raw material storage bag comprising a storage bag body with a waterproof interior that can be shaken in multiple directions, concrete aggregates and cement stored inside the storage bag body, and a water supply passage provided in the storage bag body for supplying water to the lower part of the storage bag body. The water supply passage is a tubular member provided in the storage bag body, having an upper end flush with or protruding above the upper end of the storage bag and a lower end located at the lower part of the storage bag body.

2. The concrete raw material storage bag according to claim 1, further comprising kneading means installed inside the storage bag body. When adding water to the storage bag body to knead the concrete aggregates and cement, the kneading means shakes the storage bag body multiple times to shear the water, concrete aggregates, and cement for kneading.

3. The concrete raw material storage bag according to claim 1 or 2, wherein the water supply passage has an inclined notch formed at the water discharge port at its lower end.

4. The concrete raw material storage bag according to any one of claims 1 to 3, wherein the cement is stored in a water-soluble bag and placed on top of the concrete aggregates.

5. A method for kneading concrete, comprising a water supply step of supplying water through the water supply passage to a storage bag body that has a water supply passage for supplying water to its inner surface at the lower part, has a waterproof interior, and stores concrete aggregates and cement inside; and a kneading step of kneading the concrete aggregates and cement by shaking the storage bag body in multiple directions after the water supply step.

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