JP2004305091A - Seaweed-raising block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seaweed-raising block represented by fishbank, needing no work of providing the surface thereof with unevennesses and ensuring seashells to be reused. <P>SOLUTION: The seaweed-raising block is made of a porous mass produced by setting with cement coarse aggregates together with fine aggregates, wherein the coarse aggregates are such that seashells are used as part or the whole of the raw material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a block useful mainly for growing seaweed represented by kelp.
[0002]
[Prior art]
A concrete block is usually used for the seaweed growing block. Then, by shaving the surface to form irregularities, the seeds of seaweed were easily attached. However, the work of shaving the surface is complicated. In particular, when the seaweed cultivation block had a cylindrical shape, it was difficult to scrape, so it was difficult to form irregularities. In addition, natural crushed stone is known as coarse aggregate for concrete blocks, but it is desired to use waste. In particular, shellfish such as scallops are currently difficult to dispose of because of their large quantities in the aquaculture and food industries.
[0003]
[Problems to be solved by the invention]
Under such circumstances, the seaweed cultivation block of the present invention was created, and it is an object of the present invention to eliminate the need for an operation of forming irregularities on the surface and to enable the shell to be reused.
[0004]
[Means for Solving the Problems]
The seaweed cultivation block of the present invention is characterized in that coarse aggregate using shells for part or all of the raw material is hardened together with fine aggregate with cement to form a porous mass.
[0005]
The greater the percentage of shell used in the coarse aggregate, the more the shell can be reused.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The seaweed cultivation block of the present invention is prepared by mixing coarse aggregate, fine aggregate, binder, water, and functional materials with a mixer, pouring the mixture into a mold, curing the mixture, and smoothing the upper surface. The solid is pressed slightly, and is taken out of the mold after being solidified to obtain a desired shape, for example, a cylindrical porous mass 1 as shown in FIG.
[0007]
For coarse aggregates, shells such as scallops are used as a raw material at a minimum. The raw materials may be shells alone or may include materials other than shells. Examples of materials other than shells include waste (artificial crushed stone, artificial marble, waste plastic, and the like), natural crushed stone, and charcoal, and one or more of these are used as raw materials together with shells.
[0008]
The shell is used by crushing it with a crusher as necessary. As the artificial crushed stone, for example, a thermoplastic resin, a thermosetting resin, coal ash are charged into a mixer, the mixture is charged into an extruder, melt-kneaded, extruded into a desired shape from an extrusion die, cooled. The solidified mass is crushed by a crusher and then sieved to uniform particle size. MDF waste may be used instead of or with coal ash. It is desirable that the weight ratio of the thermoplastic resin, the thermosetting resin, and the coal ash be 2-3: 1: 1 from the viewpoint of improving the bonding force by the binder. As the charcoal, for example, charcoal obtained by crushing charcoal to 20 mm or less and sieving to obtain a uniform particle size is used. The charcoal itself is porous, and the effects such as humidity control, heat insulation, sound absorption, and deodorization of the charcoal are obtained. It should be noted that artificial marble and waste plastic are used after crushing and sieving to uniform particle size.
[0009]
Examples of the fine aggregate include coal ash, sand, and crushed coarse aggregate. Cement (blast furnace cement) is used as the binder. Functional materials are added in order to change the strength, appearance, and function, and include cement strength agents, coloring agents, and water retention agents as examples, and may be added at the time of mixing, or immersed after molding. It may be soaked. The mixing ratio of the binder and water is determined within a range in which a large number of holes (voids) are formed in the block while the seaweed growing block maintains the shape of the block.
[0010]
The seaweed cultivation block of the present invention may be used as a fish reef, or may be used as a wave-eliminating block like a trade name of Tetrapot. Further, the seaweed growing block can be used as an octopus pot when it is cylindrical, and can be used as a seafood growing space when it is enlarged to form a room-like space.
[0011]
【The invention's effect】
In the present invention, shells which are considered to be waste are used as coarse aggregate, so that the greater the blending ratio, the more effectively shells can be used. In addition, the use of waste shells allows for inexpensive production. Furthermore, since it is formed in a porous mass, it is not necessary to perform the work of forming irregularities as in the prior art, and the seaweed seeds easily enter and adhere to the pores, which is favorable for growing seaweed. In addition, since it becomes a porous lump only by shaping | molding, unevenness | corrugation will also be easily provided in the inside of a cylinder.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a seaweed growing block of the present invention.
[Explanation of symbols]
1 lump

Claims (1)

A seaweed cultivation block, characterized in that coarse aggregate using shells for part or all of a raw material is cemented together with fine aggregate with cement to form a porous mass.

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