JP7689014B2 - Solidified weed suppression material - Google Patents

Description

The present invention relates to a solidified weed-suppressing material containing an inhibitory component that regulates (suppresses) the growth of plants.

Plants are sometimes planted on power line sites, river banks, road slopes, medians, airport landing strips, etc. to prevent erosion, ensure safety, maintain the landscape, prevent foundation erosion, and prevent flying sand, etc., and greenery is often attempted. If plants used for greenery grow too much, they can have a negative impact on crime prevention, appearance, and functionality, so regular maintenance such as weeding is required. However, because such greenery areas are difficult for people to access, the current situation is that maintenance requires a great deal of labor, time, and money.

For this reason, instead of regular mowing work, conventionally, plants are killed using herbicides or the like to prevent them from growing, eliminating the negative effects of excessive plant growth (for example, Patent Document 1). The technology shown in Patent Document 1 is a technology that reduces the burden of weeding by mixing a growth inhibitor with a herbicide.

In areas where greening is carried out, it is important for the environmental image, etc. that the vegetation continues to exist even if the amount of vegetation decreases, but when the technology of Patent Document 1 is used, since it is a weeding technology, after the weeding is carried out, there will be no vegetation in the greened area. If weeding is carried out in a greened area and the vegetation is removed, the scenery, including the appearance and impression of safety, will be damaged, and under the current circumstances, it is not advisable to carry out weeding in greened areas.

Special Publication No. 2013-540775

The present invention was made in consideration of the above situation, and aims to provide a solidified weed suppression material that can be placed in a desired location to adjust the morphology (size, color, flowering time, etc.) of plants and maintain (control) the morphology of the plants.

In order to achieve the above object, the solidified weed suppression material according to the present invention in claim 1 is
The method is produced by solidifying a mixture of a suppressing material containing a component element having a weed-suppressing effect of inhibiting the growth of plants and a solidifying material mixed with the suppressing material in a predetermined ratio so that the suppressing material is dissolved in a desired state ,
The component elements of the suppression member are
containing at least one of boron (B), aluminum (Al), copper (Cu), molybdenum (Mo), iron (Fe), lithium (Li), cobalt (Co), zinc (Zn), and sodium (Na);
The solidification member is at least a solidification agent,
The solidification material includes shell powder and at least one of paper sludge ash and blast furnace slag powder,
The suppressing member is coal ash,
The content of the suppression member in the mixture is 30% to 70% by volume,
The content of the solidifying material in the mixture is 70% to 30% by volume.
It is characterized by:

In the present invention according to claim 1, the suppression member is solidified by a solidifying member (solidifying agent, solidification promoter) so that the suppression member dissolves in a desired state, and a solidified weed suppression material is obtained that can adjust the form of the plant (size, color, flowering time, etc.) and maintain (control) the form of the plant. By appropriately adjusting the mixture ratio of the suppression member and the solidifying member, it is possible to adjust the hardness and the dissolution state of the suppression member so that it dissolves in a desired state (so that it dissolves while maintaining a predetermined shape or dissolves over a predetermined period of time).
Furthermore, within a predetermined concentration range, plant growth can be regulated while satisfying environmental standards.
The suppression member is solidified with a solidifying agent to produce a solidified weed control material. As the solidifying agent, a calcium-containing agent, for example, a calcium hydroxide agent, blast furnace slag powder, shell powder (unburned shell powder), etc. can be used. It is also possible to mix in a solidification promoter that promotes solidification.
In addition, coal ash (fly ash, clinker ash) that is a waste material can be effectively utilized as the suppressing agent.
Furthermore, shell powder (unburned shell powder), which has become waste and has many disposal problems, can be effectively utilized as a solidifying agent to produce a solidified weed control material with the desired strength.
In addition, it becomes possible to effectively utilize waste paper sludge ash or blast furnace slag powder as a solidification material (solidification agent, solidification accelerator).
In addition, the content of the suppressing member can be appropriately specified.
In addition, the content of the solidification material (solidification agent + solidification accelerator) relative to the suppression material can be appropriately specified.

Furthermore, the weed suppression material solidified product of the present invention according to claim 2 is characterized in that, in the weed suppression material solidified product according to claim 1 , the solidifying components of the mixture are a solidifying agent and a solidification promoter, the content of the solidifying agent in the mixture is 50% to 20% by volume, and the content of the solidification promoter in the mixture is 40% to 20%.

In the present invention according to claim 2 , the mixing ratio of the suppressing agent, the solidification agent, and the solidification accelerator can be appropriately specified. For example, the suppressing agent, coal ash, can be specified to be in the range of 40% to 60%, the solidification accelerator, paper sludge ash, can be specified to be in the range of 20% to 40%, and the solidification agents, blast furnace slag powder and shell powder (unburned shell powder), can be specified to be in the range of 10% to 25%, respectively.

The method for producing a solidified weed-suppressing material comprises mixing a solidifying material in a prescribed ratio with an inhibitor containing a component element having a weed-suppressing effect of inhibiting and suppressing plant growth to produce a mixture, adding water to the mixture in a prescribed ratio and stirring and mixing, filling the mixture into a formwork and curing it for a prescribed period of time to produce a solidified product in which the inhibitor is solidified so that it can be dissolved in the desired state.

As a result, the suppression member is solidified by the solidification member (solidification agent, solidification promoter) so that the suppression member dissolves in a desired state, and a solidified weed suppression material is produced that can adjust the morphology (size, color, flowering time, etc.) of the plant and maintain (control) the morphology of the plant. By appropriately adjusting the mixture ratio of the suppression member and the solidification member, the hardness and the elution state of the suppression member can be adjusted.

By placing the solidified weed suppression material of the present invention in a desired location, it becomes possible to adjust the morphology of the plant (size, color, flowering time, etc.) and maintain (control) the morphology of the plant.

FIG. 2 is a schematic diagram showing a process for producing a solidified weed control material according to one embodiment of the present invention. FIG. 2 is a table illustrating the basic specifications of the components of the solidified weed suppression material of the present invention. FIG. 2 is a flow chart of a manufacturing process for a solidified weed suppression material according to one embodiment of the present invention. FIG. 2 is an explanatory diagram of an example of use of the solidified weed suppression material according to one embodiment of the present invention. 1 is a graph showing the relationship between the proportion of solidified parts and strength. 11 is a graph showing the relationship between strength and the amount of elution of the suppressing member. 13 is a graph showing the change over time in the amount of elution of the suppressing member. 13 is a graph showing the change over time in the amount of elution of the suppressing member.

The solidified weed-suppressing material of the present invention is a solidified material for maintaining the growth of plants in a specified state, and the suppressing agent containing the component elements having the weed-suppressing effect of inhibiting and suppressing the growth of plants is dissolved in a desired state, and the dissolution of the suppressing agent can be controlled while maintaining a specified shape.

Figure 1 shows an overview of the process for producing a solidified weed suppression material according to one embodiment of the present invention, Figure 2 explains the basic specifications of the components of the solidified weed suppression material, and Figure 3 shows a flow chart explaining the manufacturing process of a solidified weed suppression material according to one embodiment of the present invention.

As shown in FIG. 1, coal ash (fly ash: FA, clinker ash is also acceptable) 1 containing the metal inhibitor as the main material, paper sludge ash (PSA) 2 which is a solidification promoter (solidification material) as a secondary material, blast furnace slag powder (SL) 3 which is a solidification agent (solidification material) as a secondary material, and unburned shell powder (SP) 4 (shell powder) which is a solidification agent (solidification material) as a secondary material are charged into a container 10.

The amount of water needed and the mixing ratio of the main material and secondary material are appropriately set, and a solidified weed control material 8 is produced in the form of a solidified body 5 or solid particles 6, which are powdered stone.

As a result, it becomes possible to effectively use coal ash 1, which is a waste material, as the main material and as the suppression material. And it becomes possible to effectively use paper sludge ash 2, which is a waste material, and (or) blast furnace slag powder 3, as the solidification material (solidification agent, solidification accelerator). Also, it becomes possible to effectively use unburned shell powder 4, which has become waste and left many problems in its disposal, as a solidification agent and turn it into a weed suppression material solidified matter 8 (solidified body 5, solid particles 6) with the desired strength.

As shown in FIG. 2, the role of coal ash 1 is to mainly supply aluminum (Al), sodium (Na), boron (B), and lithium (Li) as weed-suppressing components. In addition to the above, copper (Cu), molybdenum (Mo), iron (Fe), cobalt (Co), and zinc (Zn) are also used as weed-suppressing components. The mixture ratio of coal ash 1 is 30% to 70%, and preferably 40% to 60%.

The role of paper sludge ash 2 is to promote solidification (solidification accelerator) and to supply sodium (Na) and lithium (Li) as weed-suppressing components. The mixing ratio of paper sludge ash 2 is 20% to 40%.

The role of the blast furnace slag powder 3 is to solidify and increase strength (solidifying agent) while suppressing the leaching of weed-suppressing components. The mixing ratio of the blast furnace slag powder 3 is 10% to 25% by volume.

The role of the unburned shell powder 4 is to solidify and make the mixture porous (solidifying agent) and to suppress the leaching of weed-suppressing components. The mixing ratio of the unburned shell powder 4 is 10% to 25% by volume.

The amount of water is 40% to 70% of the powder (weed suppression component, solidification accelerator, solidified body). In other words, the (water/powder) ratio is 40% to 70%. The solidification accelerator content is 40% to 20%, and the solidification agent content is 50% to 20%.

As shown in Figure 3, the specific method of production is as follows: in step S1, coal ash 1 and secondary materials are mixed in a predetermined ratio. In step S2, water is added and mixed for a predetermined time. In step S3, the mixture is filled into a formwork (container 10), and in step S4, it is cured in the air (cured in the air while being prevented from drying). Finally, in step S5, it is left to stand at room temperature for a predetermined time, and is turned into a solidified weed suppression material 8.

The solidified weed suppression material 8 (solidified body 5, solid particles 6) is formed by solidifying the suppression material with a solidifying material (solidifying agent, solidification promoter) and solidifying the weed suppression material so that it dissolves in a desired state. By dissolving the weed suppression material in a desired state, the plant's form (size, color, flowering time, etc.) is adjusted, resulting in a solidified weed suppression material 8 that can maintain (control) the plant's form. By appropriately adjusting the mixture ratio of the suppression material and the solidifying material (solidifying agent, solidification promoter), the hardness and the dissolution state of the suppression material can be adjusted.

The component elements of the inhibitor preferably contain at least one of boron (B), aluminum (Al), copper (Cu), molybdenum (Mo), iron (Fe), lithium (Li), cobalt (Co), zinc (Zn), and sodium (Na). This allows the plant growth to be regulated within a specified concentration range while meeting environmental standards.

An example of the use of the solidified weed-suppressing material 8 (solidified body 5, solid particles 6) will be described with reference to Figure 4. Figure 4 shows the situation in which the solidified weed-suppressing material 8 according to one embodiment of the present invention is applied to the site of a power transmission line.

Power lines are often located in places where it is difficult for people to access, so the areas around the power lines are greened for aesthetic reasons. If the plants used for greening grow too much, there is a risk that they will have adverse effects on crime prevention, appearance, and functionality.

As shown in the figure, multiple solidified weed suppression materials 8 are laid around the base of the steel tower 12 on the site of the power transmission line 11 (solidified bodies 5 and solid particles 6 are laid as appropriate depending on the location). Multiple solidified weed suppression materials 8 are laid in a desired area around the foundation block 12a of the steel tower 12. Additionally, multiple solidified weed suppression materials are laid along the access road 13 to the steel tower 12.

The weed-suppressing material solidified matter 8 contains suppressing elements that have a weed-suppressing effect of inhibiting and regulating the growth of plants 14, and the elements are dissolved. Therefore, the growth state of the plants 14 around the base block 12a of the pylon 12 and the access road 13 to the pylon 12 is controlled to the desired state by arbitrarily adjusting the size, color, flowering time, etc. of the leaves, roots, and stems, which are the form of the plants 14, and the desired size, color, etc. are maintained without maintenance.

By simply laying the weed-suppressing solidified material 8, the shape of the plants 14 around the foundation block 12a of the pylon 12 and on the access road 13 to the pylon 12 is adjusted, the growth state is controlled, and the desired size, color, etc. are maintained. This makes it possible to maintain (control) the shape of the plants 14 (size, color, flowering time, etc.) within a specified range, and it is possible to suppress the plants from growing more than necessary around the foundation block 12a of the pylon 12 and on the pylon 12.

In other words, the vegetation around the foundation block 12a of the tower 12 (at the base of the tower 12), which is a difficult-to-access location, can be kept low for a long period of time, which is advantageous for the scenery and protection of facilities. In addition, by applying a weed-suppressing solidified material to the access road 13 to the tower 12 in the mountainous area and controlling (adjusting) the vegetation 14 to keep it low for a long period of time, the access road 13 can be secured for a long period of time without requiring special maintenance.

The performance of the solidified weed suppression material 8 will be explained based on Figures 5 to 8.

Figure 5 shows the relationship between the ratio of the solidifying materials, blast furnace slag powder (SL) and unburned shell powder (SP), to the auxiliary materials and the strength, while Figure 6 shows an example of the relationship between the strength and the amount of elution of the inhibitor. Also, Figure 7(a) shows the change over time in the amount of elution of aluminum (Al), Figure 7(b) shows the change over time in the amount of elution of sodium (Na), Figure 8(a) shows the change over time in the amount of elution of boron (B), and Figure 8(b) shows the change over time in the amount of elution of lithium (Li).

As shown in Figure 5, when the coal ash 1 is kept constant, the strength of the weed control material solidified matter 8 increases as the amount of blast furnace slag powder (SL) and unburned shell powder (SP), which are solidifying agents among the secondary materials, increases.

Therefore, by adjusting the amount of blast furnace slag powder (SL) and uncalcined shell powder (SP), a solidified weed suppression material 8 with the desired strength can be produced. Furthermore, by adjusting the amount of blast furnace slag powder (SL) and uncalcined shell powder (SP), solidified materials of various shapes (structures) can be produced. For example, a solidified weed suppression material in the shape of a gardening ornament can be produced.

As shown in an example in Figure 6, when the coal ash 1 is kept constant, the amount of elution of the suppression material (metal) decreases as the strength of the weed suppression material solidified material 8 increases. Therefore, by keeping the strength at a level that is not too high, the amount of elution of the suppression material (metal) can be maintained at a level higher than necessary.

In the example shown in Figure 6, lowering the strength reduces the strength of the solidified product in the desired shape, but ensures a sufficient amount of elution of the inhibitor (metal) to produce a granular solidified product.

Therefore, by selecting various mixing ratios of the main material (the suppression material), the secondary materials (the solidification agent, and the solidification promoter), it is possible to produce the weed suppression material solidified matter 8 in the desired form (structure, granular solidified body).

For example, by spreading solid particles 6 around the periphery of curbs such as corners of sidewalks at intersections, the growth of plants growing around the curbs can be suppressed. Sand, soil, fallen leaves, etc. tend to accumulate on the curbs, and there is a risk of plants (weeds) growing in the compost. By spreading the solidified granular suppression material, the growth of plants (weeds) around the curbs can be suppressed even if sediment accumulates.

As shown in Figures 7 and 8, although the elution amounts of aluminum (Al), sodium (Na), boron (B), and lithium (Li) show different trends in the fluctuations in the elution amounts, it was confirmed that metal components were eluted from the solidified weed suppression material 8 even after the passage of time (months) (for example, even after about 9 months).

Even after time (months) has passed (for example, after about nine months), the elution of metal components from the solidified weed suppression material 8 is maintained, but the period when the concentration in the soil liquid is high varies depending on the type of component element. Therefore, by selecting the suppression member, it is possible to create a solidified weed suppression material 8 that suppresses growth at the desired time depending on the purpose of use.

By placing the solidified weed suppression material of the present invention in a desired location, it becomes possible to adjust the morphology of the plant (size, color, flowering time, etc.) and maintain (control) the morphology of the plant.

The present invention can be used in the industrial fields of solidified weed suppression materials and methods for producing solidified weed suppression materials.

REFERENCE SIGNS LIST 1 Coal ash 2 Paper sludge ash 3 Blast furnace slag powder 4 Unburned shell powder 5 Solidified body 6 Solid particles 8 Weed suppression material solidified matter 10 Container 11 Power line 12 Steel tower 13 Access road 14 Plants

Claims (2)

The method is produced by solidifying a mixture of a suppressing material containing a component element having a weed-suppressing effect of inhibiting the growth of plants and a solidifying material mixed with the suppressing material in a predetermined ratio so that the suppressing material is dissolved in a desired state ,
The component elements of the suppression member are
containing at least one of boron (B), aluminum (Al), copper (Cu), molybdenum (Mo), iron (Fe), lithium (Li), cobalt (Co), zinc (Zn), and sodium (Na);
The solidification member is at least a solidification agent,
The solidification material includes shell powder and at least one of paper sludge ash and blast furnace slag powder,
The suppressing member is coal ash,
The content of the suppression member in the mixture is 30% to 70% by volume,
The content of the solidifying material in the mixture is 70% to 30% by volume.
A solidified weed suppression material. In the solidified weed suppression material according to claim 1,
The solidification components of the mixture are a solidification agent and a solidification accelerator,
The solidification agent content of the mixture is 50% to 20% by volume;
A solidified weed control material, characterized in that the content of the solidification promoter in the mixture is 40% to 20%.

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