Rammed earth blocks

Abstract

To provide rammed earth blocks that reduce the likelihood of collapse during construction, for example, when constructing a rammed earth wall.SOLUTION: The cubic rammed earth blocks are made by compacting soil-based materials within formwork. Reinforcing materials are distributed inside the rammed earth blocks.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a block for block construction that can be used for a block construction wall that is manufactured using the well-known block construction method, can construct a high earth wall, has high workability, and can reuse earth materials.

Background Art

[0002] It has been widely known to construct an earth wall or the like by block construction, and it is often seen in earth walls of temples and shrines. This construction method involves putting earth into a formwork and compacting it layer by layer at appropriate heights, and repeating this process several times for construction. However, when creating a wall by block construction, if the wall thickness is thin, the wall body will be fragile, so a certain wall thickness is required, resulting in a heavy total weight and difficulty in stacking it high due to the structural instability of compacting the earth. These are basic problems, and currently, block construction is rarely adopted.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 describes a non-cement-based solidifying material that does not contain cement, and an earth structure using this material. However, in the invention described in Patent Document 1, a non-cement-based solidifying material is mixed with earth to form blocks, and the blocks themselves are not manufactured by the block construction method.

[0005] In the present invention, the blocks themselves are formed by block construction , Example For example, when constructing a block construction wall During actual use, It is likely to collapse easily during construction it is possible to reduce It aims to provide a rammed earth block.

Means for Solving the Problem

[0006] In order to achieve the above object, in the present invention, A rammed earth block formed by compacting a soil-based material within a formwork, comprising a reinforcing material disposed inside the rammed earth block and extending along the longitudinal direction of the rammed earth block. By arranging this reinforcing material, it is possible to resist bending stress and tensile stress applied to the material constituting the rammed earth block.

[0007] The reinforcing material may be formed from a rough rope.

[0008] The reinforcing material may be formed from natural materials. In this case, not only the material of the rammed earth block but also all the components are natural materials, which is preferable in terms of environmental hygiene.

[0009] A pair of the reinforcing materials may be provided and arranged apart from each other in the width direction of the rammed earth block.

[0010] The pair of reinforcing materials may be arranged at both end portions in the width direction of the rammed earth block.

Effect of the Invention

[0011] Since the present invention has the above-described configuration, It is possible to resist bending stress and tensile stress applied to the material constituting the rammed earth block.

Brief Description of the Drawings

[0012] [Figure 1] Perspective view showing an example of the rammed earth block of the present invention [Figure 2] Front view of the rammed earth wall constructed using the rammed earth block of the present invention [Figure 3] Front view showing the framework structure for stacking the rammed earth blocks [Figure 4] Cross-sectional view showing the relationship between the rammed earth block and the core material

Mode for Carrying Out the Invention

[0013] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the earth retaining block 1 of the present invention. The overall shape is a rectangular parallelepiped, and recesses 2·2 are formed on both short sides. This earth retaining block 1 is manufactured by putting soil into a formwork (not shown) and ramming it. Therefore, the overall shape is not limited to this embodiment, and can be appropriately selected according to the shape of the formwork, such as a cube or a trapezoidal cross-section. 3 is a reinforcing material arranged longitudinally inside the cross-section, which is for resisting bending stress, tensile stress, etc. The reinforcing material is not particularly limited in terms of its material from the functional surface. However, when the earth retaining block 1 of this embodiment can be crushed into the material of the block itself and returned to the soil when it is discarded after use, it is preferable to adopt natural materials such as rough ropes in the same way.

[0014] As an example of the material excluding the reinforcing material 3 of the earth retaining block 1, sand, which is a fine aggregate for concrete, is mixed with the local soil at the site where the earth retaining construction is carried out, and a magnesium-based solidifying agent is stirred, and then sewage, groundwater, industrial water, river water, etc. are added and used. As an example of the mixing ratio, there are 10 to 15 parts of binder, 30 parts of sand, 100 parts of soil collected from the soil, and 20 to 35 parts of water. These are mixed to prepare the material of the earth retaining block 1. Note that the amounts of the binder, sand, and soil are the amounts in the dry state. The particle size of the soil is not particularly limited, but preferably it is 15 mm or less and contains 15% or more of clay in the component. The ratio of soil to sand is set to 100:30 for the purpose of ensuring the amount of soil collected from the local soil and matching the local atmosphere. Also, this ratio is adjusted to have an appropriate particle size for the solidification of the soil, and to enhance the dimensional stability (preventing deformation due to drying) accompanying the solidification of the soil. Note that these materials will be treated as industrial waste, but after use, they can be crushed and reused. Also, the rough rope used as the reinforcing material can be treated as ordinary waste. Therefore, the generation amount of industrial waste can be suppressed.

[0015] Note that the reason for allowing a range in the blending of the binder and water is to accommodate the differences in the soil particle size, moisture state, and components contained in the local soil, and it is determined as appropriate according to the properties of the local soil. By adjusting the ratio and amount of water and the binder according to the water content ratio of the soil within this range, the soil can be solidified regardless of the differences in the soil.

[0016] Next, as a procedure for manufacturing the rammed earth block, the materials used as raw materials are kneaded in an electric mixer until they become uniform. This is poured into the mold up to the first stage 1a in FIG. 1 and tamped and molded with a hammer or the like. Then, a reinforcing material 3 such as a rough rope is placed on the upper side of the first stage, and then the raw material of the second stage 1b is poured in and tamped in the same manner, and the reinforcing material 3 is placed on its upper side. Subsequently, the raw material of the third stage 1c is poured in and tamped in the same manner, and after adjusting the overall shape, it is solidified. The tamping may be done manually or by using an electric hammer drill or the like. After about one hour has passed since the tamping is completed and the whole becomes stable, it is demolded and dried. Regarding drying, it may be natural drying or drying while blowing air in a heated atmosphere, but it is preferable to give an appropriate time to the drying process in order to dry the inside to a certain extent. In this embodiment, the manufacturing of the rammed earth block is carried out in three stages, and a reinforcing material 3 is installed between the first stage 1a and the second stage 1b, and between the second stage 1b and the third stage 1c. However, if the adhesion between the rough rope as the reinforcing material 3 and the raw material can be ensured and sufficient tamping of the whole block can be achieved, it is also possible to place the rough rope in the middle process while pouring the raw material and tamp the whole in the final stage.

[0017] Regarding an example of a retaining wall using the retaining blocks of the present embodiment, as shown in Fig. 2, it is a front view showing the state where the retaining blocks 1 are stacked, and the retaining wall 4 is created by stacking the retaining blocks 1 through joints (taro joints). 5·5 are frame bodies provided on both sides. The figure shows the state where the retaining blocks 1 are stacked in 19 rows. In the present embodiment, the retaining blocks 1 do not simply stack, but adopt a framework structure so as not to collapse in the stacked state. Fig. 3 is a front view showing an example of the framework structure, in which a plurality of core materials 6 are erected at equal intervals between the frame bodies 5·5. The specific configuration of the core material 6 does not need to be particularly limited, and the purpose is to prevent collapse when the retaining blocks 1 are stacked. However, as the core material 6 adopted in the present embodiment, as shown in Fig. 4, it is preferable that the web portions of two U-shaped metal plates 7 in a plan view are integrated in a set with their backs facing each other. The metal plate 7 can be obtained by, for example, drawing and molding of aluminum. The material of the metal plate 7 is not limited to aluminum, and it may be a channel-shaped steel plate. What is required for the metal plate 7 is to facilitate the stacking of the retaining blocks 1 and prevent collapse by forming a framework structure, and there is no particular problem as long as this is satisfied. However, a material with good adhesiveness to mortar is preferable.

[0018] Subsequently, the procedure for constructing the retaining wall 4 will be described. First, as shown in Fig. 3, the core materials 6 are erected at equal intervals between the frame bodies 5·5. Only one metal plate 7 is erected on each side of the core material 6, and in the middle part, the metal plates 7 are erected in a form where two are back-to-back as illustrated in Fig. 4. Next, the retaining blocks 1 are installed in a row so as to be inserted between the core materials 6, and, for example, three rows are stacked as one unit. Then, as shown in Fig. 4, the space formed by the recesses 3·3 of the adjacent retaining blocks 1·1 is filled with mortar 8. The mortar 8 functions to surely position the retaining blocks 1 with respect to the core materials 6. Further, the retaining blocks 1 are stacked in the same process above it, and the mortar 8 is filled to build up the retaining wall 4 to the planned height. Note that the retaining blocks 1 are stacked with reference to the core materials 6 and are installed via the mortar 8 with respect to the core materials 6, so they are stable, and there is no particular need to fix the upper and lower retaining blocks with joint materials.

[0019] The rammed earth block according to one aspect of the above embodiment is a cubic rammed earth block formed by compacting a soil-based material within a formwork. The material comprises 10 to 15 parts by mass of a binder, 30 parts by mass of sand, 100 parts by mass of soil, and 20 to 35 parts by mass of water. All the materials used for these materials are basically natural materials, and it is easy to contribute to reuse. Also, since a magnesium-based solidifying material is used as the binder, it is relatively easy to procure.

[0020] The soil may have a particle size of 15 mm or less and be soil collected from the local soil where the rammed earth block is to be installed. For this reason, local materials from all over the country can be used as materials at the construction site, which is suitable for the environment and also enables construction to blend in with the local atmosphere in terms of landscape.

[0021] A reinforcing material may be arranged along the longitudinal direction inside the rammed earth block. By arranging this reinforcing material, it is possible to resist bending stress and tensile stress applied to the material constituting the rammed earth block. In the means of using a rough rope as the reinforcing material, not only the material of the rammed earth block but also all the components are natural materials, which is preferable in terms of environmental hygiene.

[0022] According to such a rammed earth block, the rammed earth block itself is excellent in wettability, heat insulation, and deodorization. When adopted indoors, the air environment can be improved to provide a comfortable space. Also, due to its high heat insulation property, power consumption can be suppressed even during air conditioning, etc., and it can also contribute to an energy-saving and low-carbon society.

Explanation of Symbols

[0023] 1 Formed Block 2 Concave Portion 3 Reinforcing Material 4 Formed Wall 6 Core Material 7 Metal Plate 8 Mortar

Claims

1. A cubic block for building a wall by compacting a soil-based material within a formwork, wherein the material comprises 10 to 15 parts of a binder, 30 parts of sand, 100 parts of soil, and 20 to 35 parts of water. The building block for building a wall is characterized by this composition.

2. The building block for building a wall according to Claim 1, wherein the binder is a magnesium-based solidifying material.

3. The building block for building a wall according to Claim 1 or 2, wherein the soil has a particle size of 15 mm or less and is soil collected from the local soil where the building block for building a wall is to be installed.

4. The building block for building a wall according to any one of Claims 1 to 3, wherein a reinforcing material is horizontally arranged in the longitudinal direction inside the building block for building a wall.

5. The building block for building a wall according to Claim 4, wherein the reinforcing material is a rough rope made of a natural material.

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