Cladding material spraying device and spraying construction method

Abstract

To provide a paving material spraying device that can easily perform paving work by a spraying method even on objects where construction is usually difficult, such as the road surface or narrow areas. 【Solution means】The paving material spraying device 10 includes a paving material storage unit 1 that stores a hydraulic paving material M, a pressurized air generation unit 2 that generates pressurized air A used for pressurizing the paving material M in the paving material storage unit 1 and pumping the paving material M discharged from the paving material storage unit 1, a conveyance path unit 3 in which the paving material M discharged from the paving material storage unit 1 is mixed with the pressurized air A for pumping and conveyed, and a spraying unit 4 provided at the end of the conveyance path unit 3 for discharging the paving material M.

Description

Technical Field

[0001] The present invention Paving material spraying device and spraying construction method relates to, in particular, a paving material spraying device and the like with excellent workability that can perform paving work even on difficult-to-construct objects such as narrow areas.

Background Art

[0002] The applicant has already disclosed a paving material invention that is low-cost, truly a natural material, has a small environmental impact even when discarded, is difficult for the material to peel off and scatter, can be easily repaired without newly constructing a paving material even when peeled off, and Difficult to slip is less likely to rot and is excellent in physical and chemical durability (Patent Document 1 below), and provides products based thereon.

[0003] The paving material includes bark or crushed bark and a binder, and has a configuration capable of forming a mixed paving structure in which the fibers of the bark are intertwined. The paving material can also be composed only of bark and a binder as solids. The tree species of the bark is not limited, and either coniferous bark or broad-leaved bark can be used, and materials other than bark and a binder can also be included.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Due to the above-mentioned various advantages, the flooring material has been evaluated for its high usefulness. However, there are still issues. This is not limited to this flooring material but is common to all flooring construction in general, which is that there are places where construction is difficult. In flooring work, the construction is carried out by transporting the flooring machinery to the construction site using a dump truck or manually. For example, in the case of a slope, it is difficult to transport and lay the machinery manually.

[0006] For such difficult construction locations, the spraying method is considered more suitable than the conventional compaction method. In normal flooring work, the flooring material is compacted and hardened by rolling. In the case of the spraying method, the air pressure for spraying replaces rolling. However, conventional spraying machines require about a day for both installation and removal, and it is not the case that they can be immediately constructed as soon as they are transported and installed at the construction site and can be immediately removed after completion.

[0007] Also, construction in narrow areas takes a considerable amount of time and labor. Therefore, there is a need for a technology that can make the construction by the spraying method on slopes and in narrow areas easier, can be immediately constructed as soon as it is transported and installed at the construction site, can be immediately removed after completion, and can further promote the popularization of the above-mentioned patented flooring material with excellent usefulness.

[0008] In addition, when using the above-mentioned patented flooring material, conventionally, the water input during stirring has been carried out by relying on the hand feeling while checking the water content ratio of the bark, so the quality stability is not sufficient. If the water content ratio is high, it will stick to the inside of the hose for transporting the flooring material and cause blockage, making the spraying construction difficult, and the flooring material will harden in a state where its adhesion to the ground is too strong, which is not desirable. On the other hand, if the water content ratio is too low, the adhesion will be weak and the finish will be flimsy, and the durability will also be low. Therefore, it is required to maintain the optimal water amount and make the water addition amount constant.

[0009] Therefore, the problem to be solved by the present invention is, based on the above-described prior art situation, to provide a paving material spraying device or the like that can easily perform paving work by a spraying method even on objects where construction is usually difficult, such as slopes and narrow areas, and that can be constructed immediately after being carried into and installed at the construction site and can be removed immediately after completion, and that has excellent workability. Further, it is to provide a paving material spraying device or the like that can appropriately add water to the paving material to make the moisture content constant and that has high workability.

Means for Solving the Problem

[0010] As a result of studying the above problems, the inventors of the present application have found that, when performing paving work using a paving material by a spraying method, it can be solved by making the structure and method of the spraying device suitable for spraying construction, such as devising the use of pressurized air and providing a water addition section for adding water, and based on this, the present invention has been completed. That is, the invention claimed in the present application, or at least the disclosed invention, as means for solving the above problems is as follows.

[0011] 〔1〕 A paving material storage section for storing a hydraulic paving material, pressurization within the paving material storage section, and a pressurized air generation section for generating pressurized air used for pumping the paving material discharged from the paving material storage section, a conveyance path section through which the paving material discharged from the paving material storage section is mixed with the pressurized air for pumping and conveyed, and a spraying section for discharging the paving material provided at the end of the conveyance path section In the conveying path section characterized by a paving material spraying device. and a water adding section provided at a position immediately before or adjacent to the spraying section or in the spraying section itself for adding water to the paving material conveyed in the conveying path section, and the pressurized air generated by the pressurized air generating section is directly sent to the paving material storage section and the conveying path section respectively. With such a configuration, two actions are performed: the extrusion action of the pressurized air on the paving material in the paving material storage section and the pressure feeding action on the paving material discharged into the conveying path section. The pressure-fed paving material becomes a water-added paving material that has received a predetermined amount of water from the water adding section, and this is discharged from the spraying section 〔 2 〕 The water addition section is To achieve a desirable moisture content in the discharging stage for the paving material characterized by being provided with water addition amount adjusting means for adjusting the amount of water added, the paving material spraying device according to 1 〔 〕 described above. 3 〔 1 〕 The paving material storage section is provided with kneading means for kneading the paving material and extruding it into the conveyance path section, the paving material spraying device according to 2 either of 〔 4 ​〕 The paving material storage section and the conveyance path section are integrally formed. 3 〕 The paving material spraying device according to 〔

[0012] 〔 5 〕 The paving material storage section and the conveyance path section are separately formed. 3 〕 The paving material spraying device according to 〔 〔 6 〕 Roads, slopes Paving material spraying construction in a narrow area such as around a street tree For use 〕 The paving material spraying device according to 〔 3 〕 〔 7 〕 As the paving material, the following <sr>A paving material spraying device according to [, which is characterized by using the specific paving material shown in 3 . <sr>The specific paving material contains a binder that is bark and a magnesium-containing substance, and the bark has a structure in which fibers are intertwined in a mixed state so as to form a paving structure in which the fibers are intertwined, and the binder is magnesium oxide, magnesium oxide extracted from seawater, or a substance containing any of these. Crushed bark also falls under the category of bark. 8 As the paving material, the following <sr>Characterized by using the specific paving material shown in, 6 The paving material spraying device described in <sr>The specific paving material includes a binder that is bark and a magnesium-containing substance, and the bark has a structure in which fibers are intertwined to form a mixed state that can form a paving structure in which the fibers are intertwined. The binder is magnesium oxide, magnesium oxide extracted from seawater, or a substance containing any of these. Crushed bark also falls under the category of bark.

[0013] 9 1 A method of spray-applying a paving material to a paving target using the paving material spraying device described in In the conveying path section , the method comprising: a paving material preparation process of preparing a paving material in the paving material storage section; a storage section pressurization process of pressurizing the inside of the paving material storage section with pressurized air generated by the pressurized air generation section; and on the other hand, mixing the pressurized air with the paving material discharged from the paving material storage section and pressure-feeding the mixture in the A water adding process in which water is added to the paving material conveyed in the conveying path section by the water adding section, and a paving material discharging process in which the water-added paving material pumped to the spraying section is discharged therefrom transport path section. And with such a configuration, the pressurized air generated by the pressurized air generating section performs two actions: the extrusion action on the paving material in the paving material storage section during the pressurization process in the storage section and the pressure feeding action on the paving material discharged into the conveying path section during the paving material pressure feeding process. The water-added paving material from the water adding process is discharged from the spraying section during the paving material discharging process The spray-applying method is characterized by the above. 10 To make the moisture content of the paving material the desirable moisture content in the discharging stage The spray-applying method according to 9 is characterized by including a water addition amount adjustment process of adjusting the amount of water added to the paving material by the water addition amount adjustment means provided in the water addition section. 11 As the paving material, the following <sr>Using the specific paving material shown in, 9 〕, 10 〕, the spraying construction method according to any one of the above. <sr>The specific paving material includes bark and a binder containing magnesium, and the bark has a structure in a mixed state where the fibers are intertwined so as to form a paving structure in a mixed state where the fibers are intertwined, and the binder is magnesium oxide, magnesium oxide extracted from seawater, or a substance containing any of these. Crushed bark also falls under the category of bark. 〔 12 〕 The method of spraying construction according to In which, by finely crushing and pulverizing the bark, it becomes fibrous using the above-mentioned specific paving material 11 as a raw material, characterized in that.

[0014] 〔 13 〕 By finely crushing and pulverizing wood, etc., it becomes fibrous The method of spraying construction according to any one of 9 〔 10 〕, characterized in that wood resources are used as a raw material for the paving material.

Advantages of the Invention

[0015] Since the Paving material spraying device and spraying construction method of the present invention is configured as described above, according to these, for objects such as slopes and narrow areas where construction is usually difficult, paving work by the spraying method can be easily performed. It can be made smaller in size compared to conventional machines for the spraying method, and construction is possible even in places where it was impossible or difficult to carry in and install conventionally. Also, construction can be carried out immediately after being carried in and installed at the construction site, and it can be removed immediately after completion. In addition, water can be appropriately added to the paving material to make the moisture content constant, thereby providing a paving structure of high quality. Thus, according to the present invention, a paving material spraying device excellent in workability can be provided, thereby increasing the utilization rate of the above-mentioned patent paving material excellent in usefulness and further promoting its popularization.

[0016] Also, the paving material for spraying construction of the present invention Relating to is well fiberized by the treatment of a fiber planting machine and can form a good mixed state where the fibers are intertwined. Thereby, obtained by construction The spraying construction paving structure involved is It is provided as a paving structure in a good mixed state where fibers are closely intertwined with each other.

Brief Explanation of Drawings

[0017]

Figure 1

Figure 1-2

Figure 2

Figure 2-2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 7-2

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0018] Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view conceptually showing the basic configuration of the paving material spraying device of the present invention. Further, FIG. 1-2 is an explanatory view conceptually showing the operation of the paving material spraying device of the present invention shown in FIG. 1. As shown in these figures, the paving material spraying device 10 of the present invention includes a paving material storage section 1 for storing a hydraulic paving material M, a pressurized air generating section 2 for generating pressurized air A used for pressurizing the inside of the paving material storage section 1 and for pumping the paving material M discharged from the paving material storage section 1, a conveying path section 3 through which the paving material M discharged from the paving material storage section 1 is mixed with the pressurized air A for pumping and conveyed, and a spraying section 4 provided at the end of the conveying path section 3 for discharging the paving material M. This is the main configuration. Note that the storage section 1 may be a space for manufacturing (preparing) the paving material M therein by mixing predetermined raw materials. That is, it may be used for both paving material manufacturing and storage.

[0019] In the paving material spraying device 10 of the present invention having such a configuration, a hydraulic paving material M is stored (or manufactured and stored) in the paving material storage section 1. On the other hand, the pressurized air generating section 2 manufactures pressurized air A used for pressurizing the inside of the paving material storage section 1 and for pumping Tp of the paving material M discharged from the paving material storage section 1. The manufactured pressurized air A is sent to the paving material storage section 1 to pressurize the inside thereof, and is also sent to the conveying path section 3 for pumping the paving material M discharged from the paving material storage section 1 for spraying construction.

[0020] When the inside of the paving material storage section 1 is pressurized by the pressurized air A, pressure is applied to the stored paving material M, which is the pressure toward the outlet on the last flow side in the paving material storage section 1, that is, toward the conveying path section 3 communicating with the spraying section 4. That is, the paving material M is pushed out to the inlet of the conveying path section 3 by the pressurized air A and discharged into the conveying path section 3.

[0021] On the other hand, the pressurized air A is also directly sent to the conveyance path portion 3 and blown into it, and also functions to pressure-feed (Tp) the paving material M discharged into the conveyance path portion 3 toward the spraying portion 4 on the downstream side. That is, the paving material M discharged into the conveyance path portion 3 is conveyed toward the spraying portion 4 in a state of being mixed with the pressurized air A for pressure-feeding. The paving material M that has been conveyed through the conveyance path portion 3 and reached the spraying portion 4 at its end is discharged from the spraying portion 4 (discharge Dg), and the spraying construction of the paving material M is performed.

[0022] In this way, by the pressurized air A, two actions, namely, the extrusion action on the paving material M in the paving material storage portion 1 and the pressure-feeding action on the paving material M discharged into the conveyance path portion 3, are performed, and the construction of the paving structure by the spraying method can be effectively and easily carried out.

[0023] FIG. 2 is an explanatory view conceptually showing the basic configuration of the paving material spraying device of the present invention having a water addition portion. Further, FIG. 2-2 is an explanatory view conceptually showing the operation of the paving material spraying device of the present invention shown in FIG. 2. As shown in the drawing, the paving material spraying device 210 is characterized in that, in addition to the configuration described with reference to FIG. 1 and the like, a water addition portion 25 for adding water W to the paving material M conveyed through the conveyance path portion 23 is provided on the upstream side of the spraying portion 24.

[0024] According to the paving material spraying device 210 having such a configuration, water W is added from the water addition portion 25 to the paving material M conveyed through the conveyance path portion 23, and the paving material M with water W added, that is, the water-added paving material M, is discharged from the spraying portion 24 on the downstream side of the location where the water W is added (discharge Dg), and the spraying construction of the paving material M is performed.

[0025] When the paving material is stored in the paving material storage unit 21, it already has a certain amount of moisture, which is the same even in the case of the basic configuration specifications of the device of the present invention shown in FIG. 1 above. However, it is desirable that the paving material M at this stage is in a state where the moisture content is reduced as much as possible. This is because if the moisture content is high, sticking and clogging are likely to occur in the conveyance path portion 23, which is not preferable. Spraying construction requires about 1.2 to 1.5 times the moisture compared to the moisture content during normal construction (rolling compaction method). As a result of the test, it is desirable that the moisture content during spraying construction is about 72%.

[0026] Supply the paving material M in a state where the moisture content is reduced as much as possible into the conveyance path portion 23, and pump it by the pressurized air A without causing sticking or clogging. To achieve the desired moisture content at the discharge Dg stage, receive a predetermined amount of water W from the water addition portion 25 to obtain the water-added paving material M, and discharge this from the spraying portion 24 (discharge Dg). Therefore, the connection position from the water addition portion 25 to the conveyance path portion 23 should be as close as possible to the position immediately before the spraying portion 24, and more preferably, it should be connected to the spraying portion 24 itself. In particular, when the construction extension becomes long, that is, when the conveyance path portion 23 by a hose or the like is extended, the paving material M is manufactured (prepared) at the moisture content of normal construction, and the spraying portion 24 is used as the connection position from the water addition portion 25. By adding water here, spraying construction with a good moisture content can be performed.

[0027] In each of the figures used in the above description, the paving material in the paving material storage unit 1 or the like and in the conveyance path portion 3 or the like strictly contains a certain amount of moisture. Also, the amount of water contained in the discharge Dg from the spraying portion 24 varies depending on the amount of water added from the water addition portion 25. Nevertheless, it is denoted as "paving material M". The same applies to the following figures.

[0028] FIG. 3 is an explanatory diagram conceptually showing the configuration of the paving material spraying device of the present invention having a water addition amount adjusting means. In the description using each of the figures below FIG. 3, the elements and their reference numerals shown in the above-mentioned FIGS. 1-2 and 2-2 may be used. As shown in the figure, the paving material spraying device 310 is characterized in that, in addition to the configuration described in FIG. 2 and the like, the water addition part 35 is provided with a water addition amount adjusting means 36 for adjusting the water addition amount.

[0029] In the paving material spraying device 310 having such a configuration, the amount of water supplied into the conveyance path part 33 by the water addition part 35, that is, the water addition amount, is adjusted by the water addition amount adjusting means 36. The water addition amount adjusting means 36 determines the water addition amount necessary to make the amount of moisture contained in the paving material M discharged from the spraying part 34 an appropriate amount, and the water W is added from the water addition part 35 with that water addition amount. That is, the water addition amount adjusting means 36 appropriately adds the water W to the paving material M, and by making the moisture amount constant, the quality of the paving structure obtained by the spraying construction can be stabilized. In particular, when the conveyance path part 33 is extended, the paving material M is manufactured (prepared) at the moisture content of normal construction, the spraying part 34 is set as the connection position from the water addition part 25, and the water W with the water addition amount adjusted here is added, so that the spraying construction can be performed with a good moisture amount.

[0030] FIG. 4 is an explanatory diagram conceptually showing the configuration of the paving material spraying device of the present invention having kneading means. As shown in the figure, the paving material spraying device 410 is characterized in that, in addition to any of the configurations described above, a kneading means 47 for kneading the paving material M and extruding it into the conveyance path part 43 is provided in the paving material storage part 41. Note that FIG. 4 shows a configuration example of a pattern provided with a water addition part 45 and a water addition amount adjusting means 46 in the same manner as FIG. 3 above.

[0031] In the main paving material spraying device 410 with such a configuration, the paving material M stored in the paving material storage section 41 is kneaded by the kneading means 47, so that the composition is homogenized to a certain extent, and is pushed into the discharge port to the conveyance path section 43 and is pushed out to the conveyance path section 43. The paving material M is smoothly discharged to the conveyance path section 43 by the cooperation of the pressurizing action in the paving material storage section 41 by the above-described pressurized air A and the pushing action by the kneading means 47.

[0032] The paving material storage section 1 or the like may have any specific specifications as long as it can store the paving material M for forming a paving structure by spraying construction inside. As the pressurized air generation section 2 or the like, a conventionally known air compressor or the like can be appropriately used. As the conveyance path section 3 or the like, a conventionally known hose or the like can also be appropriately used. As the spraying section 4 or the like, a conventionally known injector or the like can also be appropriately used, but in the case of a configuration including a water addition section 25 or the like, it is desirable to have a structure capable of connecting an addition water flow means from the water addition section 25 or the like, such as a hose.

[0033] The specific structures of the water addition section 25 or the like and the water addition amount adjustment means 36 or the like are not particularly limited as long as these elements can fully exhibit their functions, and can be designed appropriately.

[0034] Also, the kneading means 47 or the like provided in the paving material storage section 1 or the like can be designed appropriately as long as it can knead the paving material M to homogenize it to a certain extent and further exert a pushing action on the conveyance path section 43 or the like. A rotating shaft structure having a plurality of fins, that is, one with a stirring function like a screw mixer is optimal.

[0035] FIG. 5 is an explanatory diagram conceptually showing configuration examples (a) and (b) of the paving material spraying device of the present invention mainly regarding the relationship between the paving material storage section and the conveyance path section. As shown as the paving material spraying device 510a in FIG. (a), it can be assumed that the device of the present invention has the paving material storage section 51a and the conveyance path section 53a integrally configured. Such a configuration is convenient for handling such as the movement and storage of the present device 510a. On the other hand, as shown as the paving material spraying device 510b in FIG. (b), the device of the present invention may be configured such that the paving material storage section 51b and the conveyance path section 53b are separate.

[0036] The paving material spraying device 10 etc. described above is a device for constructing a paving structure on roads, slopes, and others by a spraying method using pressurized air instead of the ordinary rolling method. The construction target is not limited, and it can be used, for example, for spraying paving materials in narrow areas such as around trees like street trees.

[0037] The paving material spraying device 10 etc. of the present invention can be particularly a device dedicated to paving work using the patented paving material described in the above Patent Document 1. The paving material having the following characteristics is hereinafter referred to as "specific paving material". Characteristic 1: It contains a binder which is bark and a magnesium-containing substance. Characteristic 2: Bark includes crushed bark as well. Characteristic 3: The bark has a structure in a mixed state where fibers are intertwined. Characteristic 4: Due to Characteristic 3, a paving structure in a mixed state where fibers are intertwined can be formed. Characteristic 5: The binder is magnesium oxide, magnesium oxide extracted from seawater, or a substance containing any of these.

[0038] Of course, the paving material that can be used in the paving material spraying device 10 etc. of the present invention is not limited to the specific paving material. However, by processing the specific paving material derived from bark, which has various advantages and both high practicality and demand, with the present device 10 etc. which also has various advantages, an excellent paving structure can be constructed, and thus the spread of the specific paving material and the expansion of the demand for paving work can be expected.

[0039] FIG. 6 is a flowchart showing the basic configuration of the spraying construction method of the present invention. The device used in this construction method is a paving material spraying device 10 or the like having any of the configurations already described. Representing them and referring to the same device 10 shown in FIG. 1, the method will be described with reference to this figure. As shown in the figure, this spraying construction method is a method of spraying a paving material M onto a paving target using a paving material spraying device 10, and includes a paving material preparation process P10 of preparing the paving material M in the paving material storage section 1 of the paving material spraying device 10, a pressure application process P20 of pressurizing the inside of the storage section 1 with pressurized air A by the pressurized air generation section 2, and on the other hand, a paving material pressure feeding process P30 of mixing the pressurized air A with the paving material M discharged from the paving material storage section 1 and pressure feeding it in the conveyance path section 3, and a paving material discharging process P60 of discharging the paving material M pressure fed to the spraying section 4 from there, which is the main configuration.

[0040] With such a configuration, in this construction method, in the paving material preparation process P10, the paving material M is prepared in the paving material storage section 1 of the paving material spraying device 10, in the pressure application process P20 inside the storage section, the inside of the paving material storage section 1 is pressurized with the pressurized air A by the pressurized air generation section 2, and on the other hand, in the paving material pressure feeding process P30, the pressurized air A is mixed with the paving material M discharged from the paving material storage section 1 and this is pressure fed in the conveyance path section 3, and in the paving material discharging process P60, the paving material M pressure fed to the spraying section 4 is discharged from there, and in this way, the paving material M is sprayed onto the paving target, and the sprayed construction paving structure 50 is formed.

[0041] FIG. 7 is a flowchart showing another configuration of the spraying construction method of the present invention using a paving material spraying device having a water adding section. The device used in this construction method is a paving material spraying device 210 or the like having the predetermined configuration described above. Representing them and referring to the same device 210 shown in FIG. 2, the description will be made with reference to this. As shown in the figure, this spraying construction method is a method of spraying a paving material M onto a paving target using a paving material spraying device 210, and includes a paving material preparation process Q10 of preparing the paving material M in the paving material storage section 21, a storage section internal pressurization process Q20 of pressurizing the inside of the paving material storage section 21 with pressurized air A by the pressurized air generation section 22, and on the other hand, a paving material pressure feeding process Q30 of mixing the pressurized air A with the paving material M discharged from the paving material storage section 21 and pressure feeding it in the conveyance path section 23, a water adding process Q50 of adding water W to the paving material M conveyed in the conveyance path section 23 by the water adding section 25, and a paving material discharging process Q60 of discharging the water-added paving material M pressure-fed to the spraying section 24 from there.

[0042] With such a configuration, in this construction method, in the paving material preparation process Q10, the paving material M is prepared in the paving material storage section 21 of the paving material spraying device 210, in the storage section internal pressurization process Q20, the inside of the paving material storage section 21 is pressurized with the pressurized air A by the pressurized air generation section 2, and on the other hand, in the paving material pressure feeding process Q30, the pressurized air A is mixed with the paving material M discharged from the paving material storage section 21 and this is pressure-fed in the conveyance path section 23, in the water adding process Q50, water W is added to the paving material M conveyed in the conveyance path section 23 by the water adding section 5, and in the paving material discharging process Q60, the water-added paving material M pressure-fed to the spraying section 24 is discharged from there. In this way, the paving material M is sprayed onto the paving target, and a sprayed construction paving structure 250 is formed.

[0043] Fig. 7-2 is a flowchart showing another configuration of the spraying construction method of the present invention using a paving material spraying device having a water addition section and a water addition amount adjusting means. The device used in this construction method is the paving material spraying device 310 described with reference to Fig. 3. Therefore, with reference to the same device 310 shown in Fig. 3, it will be described while referring to it. As shown in the figure, this spraying construction method is characterized in that it includes a water addition amount adjustment process Q40 for adjusting the amount of water added to the paving material M by the water addition amount adjusting means 36 provided in the water addition section 35 in accordance with the water addition process Q50 in the flow shown in Fig. 7.

[0044] With such a configuration, in the paving material preparation process Q10 of this construction method, the paving material M is prepared in the paving material storage section 31 of the paving material spraying device 310. In the pressurization process Q20 inside the storage section, the inside of the paving material storage section 31 is pressurized with the pressurized air A generated by the pressurized air generation section 32. On the other hand, in the paving material pumping process Q30, the pressurized air A is mixed with the paving material M discharged from the paving material storage section 31 and is pumped in the conveyance path section 33. Up to this point, it is the same as the flow shown in Fig. 7, but the subsequent part is different.

[0045] As shown in Fig. 7-2, in this spraying construction method, in accordance with the water addition process Q50, the amount of water added to the paving material M is adjusted by the water addition amount adjustment process Q40 provided, and water W is added to the paving material M being conveyed in the conveyance path section 33 by the water addition section 35. Then, in the paving material discharge process Q60, the water-added paving material M pumped to the spraying section 34 is discharged therefrom. In this way, the paving material M is spray-constructed on the paving target, and the spray-constructed paving structure 350 is formed. By spraying the paving material M with the adjusted amount of water, a paving structure 350 with better properties can be obtained.

[0046] In the spraying construction method of the present invention described with reference to FIGS. 7 and 7-2, the above-mentioned specific paving material can be used as the paving material M. As the specific paving material, in particular, optimal spraying construction can be carried out by using bark treated with a fiber planer as a raw material. Here, the fiber planer treatment is a pulverization treatment of wood or the like using a device that finely crushes and pulverizes wood or the like until it becomes fibrous, that is, a so-called fiber planer. Even if it does not reach the specific paving material, better spraying construction can be carried out by using a paving material manufactured from woody resources treated with a fiber planer as a raw material, and such a spraying construction method is also within the scope of the present invention.

[0047] As a method for manufacturing a specific paving material from bark, there is a method using a machine for peeling the bark of a log of a tree such as cedar, that is, a ring barker. However, in this method, there is a problem that a large amount of wood chips are mixed into the obtained bark and they come out on the surface of the paving structure after construction. In addition, the peeled bark can only be used as fuel or discarded and cannot be used as a material for paving materials.

[0048] There is also a method of collecting naturally fallen bark without using a ring barker, softening it after about one year, and then pulverizing and using it. The reason for taking an elapsed period, that is, aging, is that new bark is hard and the appearance of the paving structure is not preferable because the surface is shiny. However, in this method, the period until it can be used as a material for paving materials is long and the production efficiency is not good.

[0049] On the other hand, in the method using a fiber planer, unlike other types of devices, wood or the like can be finely crushed and pulverized until it becomes fibrous, and even if wood chips are mixed in, it can be finely pulverized, and the peeled bark can also be processed, and all of the raw woody resources can be used as materials. In addition, conventionally, The oil content is it was necessary to use wood that had been left for several years until it rotted, but according to the fiber planer treatment, it can be used as a material immediately. Of course, it goes without saying that bark that has been aged for about one year can be processed. Any bark can be subjected to fiber planer treatment and used as a raw material for paving materials.

[0050] Figure 8 is a photographic view showing an example of the paving material for spraying construction of the present invention manufactured using the bark processed by the fiber planting machine as a raw material. As shown in the figure, the paving material for spraying construction by the specific paving material using the bark processed by the fiber planting machine as a raw material is well fibrillated by the treatment, and moreover, the fibers are densely intertwined to have a fluffy feel, and the formation state of the mixed state is also satisfactory. It is a paving material sufficient to form a paving structure in which the fibers are intertwined to form a mixed state.

[0051] Figure 9 is a photographic view showing an example of the paving structure for spraying construction of the present invention, and is a photographic view of the paving structure constructed by the spraying construction method of the present invention using the paving material for spraying construction shown in Figure 8. As shown in the figure, a good paving structure in which the fibers are densely intertwined is formed. It is a very good finish.

[0052] In addition, the paving material treated by the fiber planting machine using the woody resource treated by the fiber planting machine as a raw material is not limited to the specific paving material having the above-mentioned characteristics 1 to 5, and is within the scope of the present invention. Further, the method of using this paving material treated by the fiber planting machine is not limited to the spraying construction method. Therefore, a conventional rolling construction method may be used.

[0053] <Regarding the water content of the specific paving material when used for spraying construction> As a result of the test, the density of the bark, which is the main raw material of the specific paving material, was 571 to 587 kg / m 2 , and the moisture content was 63 to 69%. Further, when a good paving structure was obtained by spraying construction using the prepared specific paving material, the moisture content of the specific paving material during construction was about 72%. Therefore, by setting this as the target moisture content and measuring the density and moisture content of the raw material bark, the required amount of water addition to the specific paving material in spraying construction can be calculated.

Industrial Applicability

[0054] According to the paving material spraying device and the spraying construction method of the present invention, paving work by the spraying method can be easily carried out even on objects where construction is usually difficult, such as slopes and narrow areas. Thereby, the use of specific paving materials can be further promoted. Further, the present invention Relating to The paving material for spraying construction is well fiberized by the treatment of the fiber planting machine, and a good mixed state in which the fibers are intertwined can be formed. Thereby, an excellent paving structure having a mixed state in which the fibers are closely intertwined can be provided. Therefore, it is an invention with high industrial applicability in the field of paving work and all related fields.

Explanation of Signs

[0055] 1, 21, 31, 41, 51a, 51b... Paving material storage part 2, 22, 32, 42, 52a, 52b... Compressed air generation part 3, 23, 33, 43, 53a, 53b... Conveying path part 4, 24, 34, 44, 54a, 54b... Spraying part 10, 210, 310, 410, 510a, 510b... Paving material spraying device 25, 35, 45,... Water adding part 36, 46,... Water addition amount adjusting means 47... Kneading means 50, 250, 350... Spraying construction paving structure A... Compressed air Dg... Discharge of paving material M... Paving material P10, Q10... Paving material preparation process P20, Q20... Pressurization process inside the storage part P30, Q30... Paving material pressure feeding process P60, Q60... Paving material discharge process Q40... Water addition amount adjustment process Q50... Water addition process Tp... Pressure feeding of paving material W... Water< / sr> < / sr> ​​​​​< / sr> < / sr> ​< / sr> < / sr>

Claims

1. a paving material storage section for storing hydraulic paving material; a pressurized air generating section for generating pressurized air used for pressurizing the interior of the paving material storage section and for pressurizing and feeding the paving material discharged from the paving material storage section into a transport path section described later; a conveying path section in which the paving material discharged from the paving material storage section is mixed with compressed air for pressure feeding and conveyed; A spraying section for discharging paving material provided at an end of the transport path section; a water adding section that is provided immediately before or adjacent to the spraying section or at the spraying section itself and that adds water to the paving material being transported through the transport path section; The pressurized air generated by the pressurized air generating section is directly sent to the paving material storage section and the conveying path section, With this configuration, The compressed air exerts two functions: a pushing action on the paving material in the paving material storage section and a pressure feeding action on the paving material discharged into the conveying path section. The paving material pumped under pressure is supplied with a predetermined amount of water from the water adding section, and the resulting hydrated paving material is then discharged from the spraying section.

2. 2. A paving material spraying device according to claim 1, wherein the water adding section is provided with a water addition amount adjusting means for adjusting the amount of water added to the paving material so as to obtain a desired moisture content at the discharge stage.

3. 3. A paving material spraying device according to claim 1, further comprising a kneading means provided within said paving material storage section for kneading the paving material and forcing it out onto said transport path section.

4. 4. The paving material spraying device according to claim 3, wherein the paving material storage section and the transport path section are integrally constructed.

5. 4. The paving material spraying device according to claim 3, wherein the paving material storage section and the transport path section are constructed separately.

6. A paving material spraying device as described in claim 3, characterized in that it is used for spraying paving material into narrow areas such as roads, slopes, and around trees such as street trees.

7. 4. A paving material spraying device according to claim 3, characterized in that the specific paving material shown in the following <SR> is used as the paving material. <SR> The specific paving material contains bark and a binder containing magnesium, the bark has a mixed structure in which the fibers are entangled so as to form a paving structure in which the fibers are entangled, and the binder is magnesium oxide, magnesium oxide extracted with seawater, or a material containing either of these. Crushed bark is also included as bark.

8. 7. A paving material spraying device according to claim 6, characterized in that the specific paving material shown in <SR> below is used as the paving material. <SR> The specific paving material contains bark and a binder containing magnesium, the bark has a mixed structure in which the fibers are entangled so as to form a paving structure in which the fibers are entangled, and the binder is magnesium oxide, magnesium oxide extracted with seawater, or a material containing either of these. Crushed bark is also included as bark.

9. A method for spraying paving material onto a pavement target using the paving material spraying device according to claim 1, a paving material preparation step of preparing paving material in the paving material storage section; a pressurizing step in which the inside of the paving material storage section is pressurized with pressurized air generated by the pressurized air generating section; a paving material pumping process for mixing the compressed air with the paving material discharged from the paving material storage section into the transport path section and pumping the paving material through the transport path section; a water adding process in which water is added to the pavement material transported through the transport path by the water adding section; a paving material discharge process in which the water-added paving material that has been pumped to the spraying section is discharged from the spraying section; It consists of: With this configuration, The pressurized air generated by the pressurized air generating unit The pushing action on the paving material in the paving material storage section during the process of pressurizing the storage section, and The pump has two functions: a pumping function for pumping the paving material discharged into the transport path during the paving material pumping process; The paving material to which water has been added in the water adding process is discharged from the spraying section in the paving material discharging process. A spray application method characterized by:

10. A spray application method as described in claim 9, characterized in that it includes a water addition amount adjustment process for adjusting the amount of water added to the paving material by a water addition amount adjustment means provided in the water addition section, in order to adjust the moisture content of the paving material to a desired moisture content at the discharge stage.

11. 11. The spray application method according to claim 9 or 10, characterized in that the specific paving material shown in the following <SR> is used as the paving material. <SR> The specific paving material contains bark and a binder containing magnesium, the bark has a mixed structure in which the fibers are entangled so as to form a paving structure in which the fibers are entangled, and the binder is magnesium oxide, magnesium oxide extracted with seawater, or a material containing either of these. Crushed bark is also included as bark.

12. The spray application method according to claim 11, characterized in that the specific paving material is made of fibrous bark that has been finely ground and crushed as a raw material.

13. A spray application method as described in either claim 9 or 10, characterized in that wood resources obtained by finely grinding and crushing wood or the like into a fibrous form are used as a raw material for the paving material.

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