JP2000001381A - Lightweight block and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lightweight block in which a large amt. of a wood chip component can be included and which can be converted into soil by decomposition of the chip component with time by forming and solidifying a specified amt. of a wood chip component together with a mixture of cement. sodium silicate and water repellent into a specified form. SOLUTION: The wood chip component is incorporated by 40 to 60%, and preferably 45 to 60%. The chip component may be, for example, chips or sawdust of wood, bamboo, and pattern paper. The mixture of the chip component and cement powder is mixed with a mixture of water, water repellent and sodium silicate to prepare a source mixture, which is supplied to a die of a specified form, pressurized into a specified shape and dimension and released from the die. The compounding ratio of the source material is, for example, 60 to 45 pts.wt. of the chip component, 10 to 17 pts.wt. of the cement component, 7 to 8 pts.wt. of sodium silicate, 2 to 3 pts.wt. of water repellent. and 17 to 30 pts.wt. of water. Pile holes 5 are formed in the lightweight block 1 and the pile holes 5 are used to fix the block to a specified place of the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight block and a method for producing the same, and more particularly to a lightweight block containing a wood chip component and a technique for producing the same.

[0002]

2. Description of the Related Art Conventionally, concrete blocks containing a wood chip component have been known. In this conventional block, a chip component is mixed with a cement paste or cement mortar, and the mixture is filled into a mold to form the block. Another conventional block is manufactured by mixing a chip component with a synthetic resin or a rubber-based adhesive and solidifying it.

[0003]

However, the method of molding the chip component with the above-mentioned cement paste or cement mortar requires a long time to solidify, and the molded block becomes a heavy concrete block. There is. In addition, the method of solidifying the chip component with an adhesive is that the molded block does not decompose semi-permanently,
There is a problem with disposal when it is no longer needed after use.

[0004] Therefore, a first object of the present invention is to solve the above-mentioned problem of the conventional block of this type, and it was possible to increase the content of the chip component of the wood material and use it. In this case, it is an object of the present invention to provide a lightweight block that can be assimilated into soil by the decomposition date of chip components.

[0005] A second object of the present invention is to solve the above-mentioned problem of the conventional method for producing such a block, and it can contain a large amount of wood-based chip components. It is an object of the present invention to provide a method for manufacturing a lightweight block which can be solidified in a short time, and when used, can be assimilated into soil by the decomposition time of chip components.

[0006]

In order to solve the above-mentioned first problem, a lightweight block according to the first aspect of the present invention contains 40 to 65% of a wood-based chip component, and includes cement, sodium silicate, and cement. It is characterized in that it is molded and hardened into a predetermined shape together with a mixture of liquid medicines.

[0007] In the first aspect of the present invention, the chip component is hardened mainly by cement and sodium silicate. When hardening only with cement, a large amount is required, but when used in combination with sodium silicate, the hardening can be achieved with a small amount of cement. When solidified only with sodium silicate, the strength of the solidified product is not obtained. The water-producing agent has the function of evaporating excess water in the mixture to accelerate solidification. Chip components are 40
The solidified material can be reduced in weight to contain up to 65%.

According to a second aspect of the present invention, there is provided a lightweight block according to the first aspect of the present invention, wherein a pile hole for inserting a pile is provided.

According to the second aspect of the present invention, it can be fixed to a predetermined ground using a pile hole.

In order to solve the above-mentioned second problem, a method for manufacturing a lightweight block according to the third aspect of the present invention is a method for manufacturing a light-weight block of 40 to 65%.
After mixing a mixture of wood components and cement with a mixture of water, a water-producing agent and sodium silicate to prepare a raw material mixture capable of solidifying the chip components, and filling the mixture into a mold having a predetermined shape. It is characterized in that it is pressurized to have a predetermined size and shape, and is removed from the mold to obtain a block.

In the invention according to claim 3, the chip component is solidified by a mixture containing cement and sodium silicate.
The raw material mixture containing the chip component is pressurized in a mold to form a block-shaped product having a predetermined shape. Since cement and sodium silicate are used, it can be solidified in a shorter time than when solidifying only with cement. The water-producing agent has the function of evaporating excess water in the raw material mixture and hastening the solidification of the molded product. Pressurization promotes condensation and solidification of the raw material mixture in the mold, and improves moldability. Since the molded solid contains a large amount of chip components, it becomes a lightweight block.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a lightweight block according to the third aspect, wherein the mold to be filled with the raw material mixture comprises a pile formed on the molded block. It has a structure in which holes are formed.

According to the fourth aspect of the present invention, since a mold having a structure in which a pile hole is formed is used, a lightweight block having a pile hole is formed.

[0014]

DETAILED DESCRIPTION OF THE INVENTION The wood material according to the present invention is wood, bamboo,
Various types of wood or pulp such as paper may be used. Further, as wood material, waste wood generated at a logging site or a sawmill can be used. Chip components are of a suitable size that can be included in a block, such as wood,
Cut pieces such as bamboo and paper pattern or sawdust may be used.

The amount of the chip component contained in the molded product, that is, the light weight block is 40 to 65%, preferably 45 to 60%.
%. When the amount of the chip component is small, the weight reduction is not effective, and when the amount of the chip component is too large, the mechanical strength of the molded product becomes small, which is not preferable in practical use.

The raw materials (raw material mixture) for forming the lightweight block can be mixed, for example, as follows. Chip component 60 to 45 parts by weight Cement (component) 10 to 17 parts by weight Sodium silicate 7 to 8 parts by weight Water generating agent 2-3 parts by weight Water 17 to 30 parts by weight

The mixing of each raw material to form a raw material mixture is as follows:
The mixture of the chip component and the cement (powder) is mixed in the order of water, a water generating agent, and a mixture of sodium silicate. In other mixing orders, for example, when cement and sodium silicate are mixed at the same time, solidification is fast, so that mixing is difficult, and filling in a mold becomes insufficient, so that a good molded product cannot be obtained.

To the raw material mixture, an appropriate amount (about 1 to 4 parts by weight) of a coloring component and an extending component can be added, if necessary.

[0019]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a lightweight block 1 of the present embodiment.
The lightweight block 1 has a horizontally long rectangular parallelepiped shape, and a side surface of the short side 2A in FIG. 1 is provided with a slip prevention concave portion 3 which serves as a slip stop when the blocks are connected to each other. On the side surface, there is provided a stopper portion 4 for stopping the connection when the blocks are connected to each other.
reference). Also, the short side 2A,
A pile hole 5 is penetrated in parallel to the side surface on the 2B side.

The light weight block 1 is composed of six wood chips.
It contains 0-45% (calculated as the water content of the raw material), is molded into a predetermined rectangular parallelepiped shape together with a mixture of cement, sodium silicate, and a water generating agent, and is hardened. The shape of the lightweight block 1 is not limited to the shape shown in FIG.
Various three-dimensional shapes such as a cube or a polygon can be formed. This lightweight block 1 is light because it contains a chip component of 60 to 45%. In addition, this block has water permeability (air permeability) because it mainly includes chip components. The degree of light weight or water permeability (air permeability) is affected by the amount of the chip component to be contained and the amount of the raw materials such as cement and sodium silicate mixed.

This lightweight block 1 is used for an earth retaining member 7 as shown in FIG. That is, a tree 10 is planted in the laid portion 9 laid so that the slope is not collapsed, and the soil is retained 7 by the lightweight block 1. The lightweight block 1 is fixed by a retaining pile 11 inserted into the pile hole 5. The left and right ends of this lightweight block 1 are lightweight blocks 1 arranged next to each other.
The connection between the slip-preventing concave portion 3 and the slip-preventing convex portion 4 allows the positioning and fixing to be performed well.

When the earth retaining member 7 is constructed, the lightweight block 1 is lightweight and easy to handle. Since the lightweight block 1 after the construction has water permeability (breathability), it is convenient to provide no drainage part.

Since the lightweight block 1 contains a chip component, when the chip component, that is, the wooden material is weathered and disintegrated by use, the lightweight block itself is disintegrated and returns to the soil. When the light-weight block 1 is disintegrated, the trees 10 in the development section are in a state of growing and rooting, so that the light-weight block 1 may be disintegrated.

As shown in FIG. 4, the lightweight block 1 is laid on a promenade 13 of a forest road or a park, and
It can be. A plurality of lightweight blocks 1 are arranged by connecting the slip preventing concave portions 3 and the slip preventing convex portions 4 of each of the lightweight blocks 1 so that the surface having a large area is oriented sideways and a predetermined road width is obtained. Since the laid lightweight block 1 is lightweight, it can be easily laid. Since the laid lightweight blocks 1 have water permeability (air permeability), they do not hinder the water permeability (air permeability) of the soil layer on the lower surface on which the lightweight blocks 1 are laid. The lightweight block 1 can be finely collapsed by weathering and disintegration of the chip component and returned to the soil. After that, the lightweight block 1 is laid again as needed.

The application of the lightweight block 1 is not limited to the above example, but can be widely used for other applications.

The above-described lightweight block 1 is manufactured using a mold (mold) 21 shown in FIGS. next,
A mold 21 for obtaining the lightweight block 1 will be described with reference to FIGS.

As shown in FIG. 6, the mold 21 is
2 and an upper mold 42. As shown in FIG.
2 is constituted by surrounding the outer periphery of the bottom plate 23 with a front plate 24, a rear plate 25, a left plate 26, and a right plate 27. On the left and right sides of the reinforcing structure, the elongated bottom plate 23 is provided with support members 28 in the short direction of the lower surface.
Are mounted at predetermined intervals, and two light-weight, pile-hole pipes 29 for forming the pile holes 5 of the lock 1 formed on the upper surface of the bottom plate 23 are provided upright at predetermined positions on the left and right. As shown in FIG. 7, the pile hole pipe 29 is removably inserted into an insertion member 29A projecting from the upper surface of the bottom plate 23. The pile hole pipe 29 is higher than the front plate 24 and the rear plate 25. A rectangular front plate 24 and a rear plate 25 are rotatably mounted via hinges 31 on each of the long sides before and after the bottom plate 23 (see FIG. 6).

As shown in FIGS. 5 and 6, a reinforcing member 32 is attached to the front plate 24 and the rear plate 25 in the upper and lower longitudinal directions of the outer surface.

On the left and right short sides of the bottom plate 23, a vertically long left plate 26 and a long right plate 27 are respectively rotatably mounted via hinges 33 (see FIG. 7).

The front plate 24 and the rear plate 2 in this embodiment
5, the rotation of each of the hinges 31 and 33 of the left side plate 26 and the right side plate 27 is provided with a stopper (not shown), as shown by a virtual line in FIGS. Are formed so as to be rotatable outward only by the angle of.

As shown in FIG. 5 and FIG.
On the inner surface side of the right side plate 2 is formed a convex portion 34 for forming the slip prevention concave portion 3 in the molded lightweight block 1.
On the inner surface side of 7, a concave portion 35 for forming the non-slip convex portion 4 is formed in the lightweight block 1 to be molded.

When the mold 21 is formed by assembling the side plates,
As shown in FIG. 5, the left side plate 26 erected on the bottom plate 23
And the right side plate 27 is inserted between the standing front side plate 24 and the rear side plate 25, and the positioning pins 36 protruding from the upper end surfaces of the front side plate 24 and the rear side plate 25 are respectively connected to the upper end surface of the left side plate 26 or the right side plate 27. The contact piece 37 contacts and is positioned.

As shown in FIGS. 9 and 10, brackets 38 are provided at the left and right outer ends of the reinforcing member 32 of the rear side plate 25, and locking hooks 39 are provided in through holes 38A of the bracket 38 at predetermined upper and lower positions. It is mounted so as to be rotatable in the range and left and right. End 3 of locking hook 39 on bracket 38 side
9A is secured by a welding bolt 40. A locking bracket 41 for locking the locking hook 39 described above is provided at the left and right outer ends of the reinforcing member 32 of the front side plate 24. As shown in FIGS. 9 and 10, the distal end portion 39B of the locking hook 39 has a hook shape that can be locked to the locking bracket 41 and can be removed as necessary.
The locking hook 39 is normally not locked by the locking bracket 46, and is locked by the locking bracket 41 when the form body 22 is assembled.

The front plate 24, the rear plate 25, and the left plate 2
6, the right side plate 27 is erected from the bottom plate 23 as shown in FIGS.
1 to form a mold having a predetermined molded portion S.

On the other hand, as shown in FIG. 6 to FIG. 8, an upper mold 42 to be fitted to the molding portion S of the mold body 22 is prepared. The upper die 42 is formed in a thick structure having an outer shape that can be inserted into the upper outer periphery of the molded portion S in a tightly contacting manner. At a predetermined position of the upper die 42, a pipe hole 43 into which a protruding portion of the pile pipe 29 can be inserted is provided. The mold surface of the upper mold 42 is a smooth surface (the lower surface in the figure), and the upper surface is attached to a press machine P installed above as shown in FIGS. The mold body 22 can be held in a state of being inserted into the molding part S and in a state of being retracted upward outside the molding part S.

Next, the mixed raw material is supplied to the molding section S of the form body 22 in the assembled state shown in FIG.
Is manufactured. As shown in FIG. 11, a raw material tank T is provided above and in the vicinity of the form body 22, and a predetermined mixed raw material 45 is supplied from the tank to the forming section S of the form body 22 via a supply pipe TA. Supplied.

As the mixed raw material 45, a mixture was used from 50 parts by weight of chip components, 15 parts by weight of cement, 7.5 parts by weight of sodium silicate, 2.5 parts by weight of a water generating agent, and 25 parts by weight of water.

After the supply of the mixed raw material 45 to the forming section S, the supply pipe TA is removed from a position above the forming section S, and the press P is operated, as shown in FIG. The upper mold 42 is arranged on S, and is appropriately pressed. The mixed raw material 45 is solidified (about 0.5 to 1.0 hour) at room temperature (normal temperature) while the upper mold 42 is being pressed.

After that, the upper die 4 is operated by the operation of the press machine P.
2 is lifted off. Then, as shown in FIG. 13, the locking hook 39 is removed, the front side plate 24, the rear side plate 25, the left side plate 26, and the right side plate 27 are opened, and the molding in a state where the pile hole pipe 29 is inserted is formed. The product 1A is taken out. As shown in FIG. 14, the taken-out molded article 1A is pulled out of the pile hole pipe body 29 with an appropriate jig to obtain a predetermined lightweight block 1.

The obtained light-weight block 1 has a predetermined rectangular parallelepiped shape, and is provided with a non-slip concave portion 3 and a non-slip convex portion 4 on the left and right short sides, and a pile hole 5 in a thick portion. It has the structure shown in FIG. The physical properties of the lightweight block 1 are mainly composed of a chip component, are hardened by cement and sodium silicate, and have a porous structure. This porous portion serves for water permeability and air permeability.

[0041]

According to the first or second aspect of the present invention, the first object can be achieved. That is, according to the first aspect of the present invention, there is provided a lightweight block which includes a large amount of chip components and is reduced in weight. When this lightweight block is used, the chip component contained therein is decomposed as wood, and can be naturally assimilated into soil depending on the decomposition date.

Since the lightweight block according to the second aspect of the present invention has a pile hole, the pile can be inserted and fixed during use, which is convenient.

According to the manufacturing method of the third or fourth aspect of the present invention, the above-mentioned second object can be achieved. That is, according to the production method of the third aspect of the present invention, a large amount of wood-based chip components can be contained, and solidification can be performed in a short time, so that a good lightweight block can be obtained. The obtained light-weight block is lighter in weight because it contains a large amount of chip components, and when used, the wood-based chip components can be broken down by decomposition years and naturally assimilated into soil.

According to the production method of the invention of claim 4,
A lightweight block having a pile hole can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lightweight block according to an embodiment of the present invention.

FIG. 2 is a side view of the arrangement state of the lightweight blocks.

FIG. 3 is a view showing a usage mode of a lightweight block.

FIG. 4 is a view showing another use mode of the lightweight block.

FIG. 5 is a plan view of an assembled state of a molding die body for molding a lightweight block.

FIG. 6 is a side view of a molding die.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a side view of a molding die.

FIG. 9 is a side view of the use state of the stopper member of the molding die.

FIG. 10 is a plan view of the use state of the stopper member of the molding die.

FIG. 11 is a process chart of injecting a mixed raw material into an assembled mold.

FIG. 12 is a process diagram of pressing a molding die into which a mixed raw material has been injected.

FIG. 13 is a process chart of a mold releasing process.

FIG. 14 is a process diagram of removing an upper die and a pile hole forming member from a molded product after demolding.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lightweight block 5 Pile hole 21 Form frame 22 Form body 23 Bottom plate 24 Front side plate 25 Rear side plate 26 Left side plate 27 Right side plate 29 Pipe for pile hole 31, 33 Hinge 39 Locking hook 41 Locking bracket 42 Upper mold 45 Mixing Raw material S Molding section P Press machine T Raw material tank

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04C 1/08 A 1/10 B

Claims (4)

[Claims] 1. A lightweight block containing 40 to 65% of a wood-based chip component, and molded and hardened into a predetermined shape together with a mixture of cement, sodium silicate, and a water-producing agent. 2. The lightweight block according to claim 1, wherein a pile hole for inserting a pile is provided. 3. A raw material mixture capable of solidifying the chip component by mixing a mixture of water, a water-producing agent and sodium silicate with a mixture of a chip component and cement of 40 to 65% of a wood material, and setting the mixture to a predetermined value. A method for manufacturing a lightweight block, characterized in that after filling into a mold having a shape, pressure is applied to obtain a block having a predetermined size and then removed to obtain a block. 4. The method for producing a lightweight block according to claim 3, wherein the mold for filling the raw material mixture has a structure in which a pile hole is formed in the molded block.