JP4758131B2 - Concrete admixture and concrete products - Google Patents

Description

  The present invention relates to a concrete admixture used for imparting a water purification function, a biological growth promotion function, and the like to a concrete product, and a concrete product using the concrete admixture.

  Conventionally, concrete admixtures have been used to impart various performances and functions to concrete products and improve their quality. Such concrete admixtures include AE (air entraining agent) agents, water reducing agents, accelerators, quick setting agents, rust preventive agents, thickeners, drying shrinkage reducing agents, expanding materials, coloring materials, and extending materials. It is known (Non-Patent Document 1, etc.). In recent years, various concrete admixtures have been extensively researched to add new added value to concrete products.

  On the other hand, natural minerals such as graphite silica, barley-stone, Io stone, grandmother saint-light stone, terrestrial stone, Amaterishi stone, and Yuki-an are known to have the property of emitting far-infrared rays and generating negative ions. (Non-Patent Document 2 etc.). And it has been proposed to use these natural minerals for various purposes by taking advantage of their special properties (Patent Documents 1 to 7, etc.).

“Civil Engineering”, pages 101-115, Kiyoshi Okada, etc. http: // www. goody-jp. com / itiosi / 5. htm JP 2001-069870 A JP 2001-179237 A JP 2002-088647 A JP 2002-128561 A JP 2002-327344 A JP 2003-012367 A JP 2004-268968 A

  An object of the present invention is to provide a concrete admixture used for imparting a water purification function, a biological growth promoting function, and the like to a concrete product, and a concrete product containing the concrete admixture.

  The present inventor is able to obtain a concrete product having a function of purifying water, a function of promoting the growth of organisms, etc., when graphite silica or the like, which is a natural mineral, is used as a concrete admixture in the production of concrete products. The headline and the present invention were completed.

Thus, according to the present invention, the surface portion of a concrete product containing a concrete admixture containing at least one selected from the group consisting of graphite silica, barley stone, meioite, grandmother sacred stone, space stone, amaterite, and 侑 碩There is provided a method for growing seaweed, characterized in that a small hole is provided in the small hole, and spores of seaweed are planted in the small hole and submerged in an underwater rocky place .

According to the concrete admixture of the present invention, a water purification function, a biological growth promotion function, and the like can be imparted to a concrete product.
The concrete product of the present invention has a function of purifying water, a function of promoting the growth of organisms, and the like, and is useful as an artificial fishing reef, a fish shellfish seaweed growing ground, a planter, and the like.

  Hereinafter, the present invention will be described in detail by dividing into 1) concrete admixture and 2) concrete product.

1) Concrete admixture The concrete admixture of the present invention is at least one selected from the group consisting of graphite silica, barley stone, precious gemstone, Io stone, grandmother sacred stone, air stone, amaterite, and cough. It is characterized by containing. Among these, in the present invention, it is particularly preferable to use graphite silica because it emits far infrared rays, generates a large amount of negative ions, and has wave energy emission ability.

  Graphite silica is a natural mineral also known as black silica, silica black, graphite silica, Shinmye stone, or Shinmei stone, and is calculated from “Heisei Kunikoku Mine” in Hiyama-gun, Hokkaido.

  Graphite silica is a black natural ore that has been deposited and mineralized for many years by seabed diatoms. An example of the standard composition of graphite silica is 86.4% silica, 3.0% carbon, 6.1% aluminum oxide, 1.5% potassium oxide, 0.7% titanium oxide, 0.4% iron, Magnesium oxide 0.6%, sodium oxide 0.01%, calcium oxide 0.09%, sulfur 0.09%, manganese oxide 0.01%, and phosphorus oxide 0.03%. In addition to these components, graphite silica contains various natural minerals.

  Graphite silica is a mineral that emits far-infrared rays semipermanently at room temperature. Far-infrared rays emitted from graphite silica are heat rays in a small wavelength band of a wavelength region of 4 to 14 μm and are also called growth rays. In other words, this far infrared ray has an effect of activating cellular activities in the living body and energizing animals and plants, and when absorbed by the human body, promotes sweating and improves circulation efficiency of blood and body fluids. Far-infrared rays have a function of decomposing and reducing water molecule clusters, increasing hydrogen ions, and activating water. Water molecules with small clusters are expected to have a positive effect on living cells.

  Graphite silica generates negative ions. The amount of negative ions generated from graphite silica is about 25,000 / cc (according to an ion meter), and is said to be equivalent to or higher than that of tourmaline. Negative ions are often generated in forests, waterfalls, beaches, etc., and various effects such as health promotion are known.

  Graphite silica contains magnetite, and wave energy is radiated from the magnetite. The wave motion of graphite silica is ultrafine particles or weak energy released therefrom. When a person harms their health, turbulent waves are released from the affected cells. It is said that if the natural wave that is originally there is sent, the turbulent wave is corrected and health can be maintained.

Barley stone belongs to quartz porphyry, a type of granite, and is a natural ore composed mainly of alkali feldspar and quartz.
An example of the standard composition of barley stone is 69.8% silica, 14.0% aluminum oxide, 3.2% sodium oxide, 3.2% potassium oxide, 2.0% calcium oxide, ferric oxide 1 0.3%, ferrous oxide 1.4%, titanium oxide 0.3%, magnesium oxide 3.6%, phosphorus oxide 0.3%, manganese oxide 0.02%. Barley stone contains various natural minerals in addition to these components.

  The barley stone emits far infrared rays semipermanently and is porous and has a very high adsorption capacity. In addition, it has a function of eluting minerals indispensable for living organisms in a well-balanced manner.

Io-Oishi is a black or red natural ore that has been deposited and mineralized for many years on seabed diatoms, and is a type of volcanic rock with a composition resembling agate and crystal.
An example of the standard composition of Io-Oishi is 70.2% silica, 10.7% aluminum oxide, 3.7% sodium oxide, 1.8% potassium oxide, 1.8% calcium oxide, ferric oxide 1 0.6%, boron oxide 0.5%, titanium oxide 0.2%, magnesium oxide 0.06%, phosphorus oxide 0.04%, manganese oxide 0.03%, and lithium 0.005%. In addition to these components, Ioishi contains various natural minerals.

  Medioishi emits far-infrared rays semipermanently, generates negative ions, is porous, has an excellent ability to adsorb toxic substances such as cadmium, and has a pH control function and a harmful fungus control function.

Grandma Seiko is a natural white ore from the Cenozoic Upper Miocene or Middle Generation Upper Cretaceous strata.
An example of the standard composition of Grandma Seikoishi is 66.2% silica, 13.0% aluminum oxide, 4.1% sodium oxide, 3.2% potassium oxide, 2.5% calcium oxide, and ferric oxide. 3.0%, titanium oxide 0.4%, and magnesium oxide 5.0%. In addition to these components, grandmother Seikoishi contains a variety of natural minerals.
Grandmother Seikoishi is a mineral that emits far-infrared rays.

Soraishi is another name for graphite slab and green schist, and is a type of metamorphic rock that was asleep in the seabed until crustal deformation occurred 65 million years ago.
Soraishi is a mineral containing mineral components such as quartz, alumina, ferric oxide, calcium, sodium and potassium, iron, manganese, magnesium and the like.
Soraishi emits far infrared rays semipermanently, generates negative ions, is porous, has an excellent deodorizing effect, and has a function of purifying water.

Amaterite is a natural ore from Kyushu that emits far-infrared rays in the same way as graphite silica and generates negative ions.
侑 希 碩 is a black natural ore produced in Yamato Town, Gifu Prefecture.

In the present invention, it may be at least one selected from the group consisting of graphite silica, barley stone, medioishi, grandmother sacred stone, space stone, amaterite, and cough (hereinafter referred to as “graphite silica etc.”). ), Which is naturally produced, is pulverized into powder or gravel and used as a concrete admixture.

The method for pulverizing graphite silica or the like is not particularly limited, and examples thereof include a method using a pulverizer such as a jaw crusher, a hammer mill, a pin mill, or a ball mill.
The particle size of the pulverized graphite silica is not particularly limited, but is usually 0.1 μm to 10 mm, and preferably 1 μm to 1000 μm from the viewpoint of economy.

  The concrete admixture of the present invention may be composed only of the powdered graphite silica or the like, but may be a mixture of other admixtures depending on the use of the concrete product.

  Other admixture materials are not particularly limited, and conventionally known materials can be used. Examples include AE (air entraining agent) agents, water reducing agents, accelerators, quick setting agents, rust preventive agents, thickeners, drying shrinkage reducing agents, expanding materials, coloring materials, and weight increasing materials.

  Moreover, the concrete admixture of the present invention may further contain an aerobic and anaerobic resuscitation type useful microorganism group (EM fungus) and the like. EM fungus can further enhance the purification effect of water because it performs biological activities even in concrete products and eats nutrient salts such as nitrogen and phosphorus that adversely affect the water environment.

  The mixing ratio of graphite silica and other admixtures in the concrete admixture of the present invention is usually 1:99 to 100: 0 by weight, although it depends on the other admixtures used.

2) Concrete product The concrete product of the present invention is characterized by containing the concrete admixture of the present invention.
The concrete product of the present invention is an appropriate amount in a mixture obtained by mixing the concrete admixture and the aggregate of the present invention with hydraulic powder (hereinafter, this mixture may be referred to as “hydraulic composition”). It can be produced by adding the water and pouring the mixture into a mold having a desired shape, drying it, and removing the mold.
In addition, when manufacturing large-sized concrete products, such as a tetrapot, reinforcement materials, such as a reinforcing bar, can also be installed in the inside of a shaping | molding die.

The hydraulic powder is a mineral powder having a property of being cured at room temperature by adding water.
Examples of hydraulic powder include normal portal cement, early-strength portral cement, ultra-high-strength portral cement, moderately hot portral cement, low heat portral cement, sulfate-resistant portral cement, blast furnace Cement (A type, B type, C type), silica cement (A type, B type, C type), mixed cement such as fly ash cement (A type, B type, C type); super fast hardening cement, alumina cement, And special cements such as colloidal cement and expanded cement.

  Aggregates are sand, crushed sand, gravel, crushed stone, asbestos, and similar materials that are mixed with cement and water to make concrete.

  The mixing ratio of each component in the hydraulic composition is appropriately selected according to the type of concrete product to be manufactured, the purpose of use, etc., but each component is most economically used to carry, compact, and finish the work. It is preferable to select so that a concrete product having desired durability, strength, and functionality can be obtained.

  The compounding amount of the concrete admixture in the hydraulic composition is usually in the range of 0.1 to 20% by weight, preferably 1 to 10% by weight with respect to the whole hydraulic composition. If the blending amount of the concrete admixture is less than 0.1% by weight, the effect due to the addition of the concrete admixture may not be obtained. When the amount of the concrete admixture exceeds 20% by weight, the effect of adding the concrete admixture is saturated, but it is not preferable from the viewpoint of economy.

  The blending amount of the hydraulic powder in the hydraulic composition is usually an amount that is 5 to 20% of the volume of the obtained concrete product. The amount of aggregate is 60 to 85% of the volume of the concrete product.

  The water added to the hydraulic composition is not particularly limited, but it is preferable to use water that does not contain a harmful amount of a substance that deteriorates the quality of the concrete or corrodes the reinforcing bar.

  There is no particular limitation on the method for forming a kneaded product by adding water to the hydraulic composition and kneading it. Examples thereof include a vibration-free molding method, a vibration molding method, a pressure molding method, and a centrifugal force molding method.

The non-vibration molding method is a molding method in which a hydraulic composition and water are poured into a mold and left to solidify. The vibration molding method is a molding method in which ordinary concrete is mainly used and a vibration is applied and compacted. The pressure molding method is a compacting method in which, when immediate demolding is required, mainly hardened concrete is used to pressurize in order to enhance filling. The centrifugal force forming method is a forming method in which concrete is put into a rotating mold and compacted by centrifugal force.
Examples of the drying method in each of the above molding methods include hot air drying and natural drying.

  In the present invention, the concrete product may be formed on another substrate. Examples of a method for forming a concrete product on another substrate include a method in which an appropriate amount of water is added to a hydraulic composition and kneaded onto another substrate.

  Other substrates are not particularly limited as long as they can support the hydraulic composition molded body. Other base materials include inorganic materials such as ceramics, bricks, roof tiles, rocks, earth, clay, enamel, and glass; metal materials such as iron, aluminum, copper, and various alloys; organic materials such as synthetic resins; Can be mentioned.

  The shape of the concrete product of the present invention is not particularly limited, and may be any shape such as a plate shape, a column shape, a tubular shape, a spherical shape, a rod shape, a U shape, and an L shape.

  Specific examples of concrete products include, for example, products for rivers such as tetrapots and breakwaters; products for biological growth such as artificial reefs, shellfish seaweed algae and planters; pools, water tanks; Products; Hume pipes (centrifugal reinforced concrete pipes); culverts such as box culverts, buried pipes, propulsion pipes, joint grooves, etc .; bridge products such as road girder, PC precast floor boards, PC plates for composite floor boards; Road products such as concrete slabs, interlocking blocks, concrete boundary blocks, reinforced concrete U-shaped side grooves, reinforced concrete L-shaped side grooves; poles for transmission and communication cables; Products; etc.

  Among these, the concrete product of the present invention (a) has a function of purifying water, so products for rivers such as tetrapots and breakwaters; products for artificial reefs, pools, water storage tanks, and drainage channels such as waterway blocks Concrete products installed in places that come into contact with water, such as products for bridges, fire prevention water tanks, etc. (b) Because it has a function to promote the growth of organisms, especially aquatic organisms, It is preferably a concrete product for biological cultivation. In the case of the latter, for example, a tetrapod-like seaweed breeding is made by providing a small hole in the surface (opening), planting seaweed spores (seed fungus) such as seaweed, kombu, and laver in the small hole, and submerging them in an underwater rocky place. When used in concrete products, seaweeds can grow larger than usual.

EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not restrict | limited at all by the following examples.
Example 1
Graphite silica from Kaminokuni-cho, Hiyama, Hokkaido was crushed into a powder with an average particle size of 15 μm using a jaw crusher, and this was used as a concrete admixture.
63 parts by weight of the obtained concrete admixture, 382 parts by weight of ordinary Portland cement and 883 parts by weight of aggregate were mixed to obtain a hydraulic composition, and 168 parts by weight of water was added thereto and kneaded with a mixer for 2 minutes.
Next, a mold capable of producing a tetrapot-like concrete product shown in FIGS. 1A to 1E was prepared, and the obtained kneaded material was poured into the mold. In addition to the mold shown in FIG. 1 (A), reinforcing bars were further embedded in the center and cured for 288 hours. The product shown in FIG. 1D has a hollow center part.
After natural drying, the mold was removed to obtain 0.5 to 1.8 m ³ tetrapot-like concrete products (A) to (E).

(Comparative Example 1)
In Example 1, concrete products (A ′) to (E ′) having the same shapes as those in FIGS. 1A to 1E are manufactured in the same manner as Example 1 except that the concrete admixture is not mixed. did.

(Water purification test)
Two water tanks containing river water of Arakawa with advanced pollution were prepared, and the concrete product (A) of Example 1 and the concrete product (A ′) of Comparative Example 1 were submerged. After leaving at 20 ° C. for 48 hours, the number of coliforms in the river water was measured. As a result, the number of coliforms in the water tank in which the concrete product (A) of Example 1 was submerged was 1/100 of the number of coliforms in the water tank in which the concrete product (A ′) of Comparative Example 1 was submerged.

(Biological growth test)
A small hole (diameter: 1 cm, depth: 5 cm) is drilled on the surface of the concrete products (A) to (E) obtained in Example 1 and the concrete products (A ′) to (E ′) obtained in Comparative Example 1. ) And wakame spores were planted inside the holes. This was submerged on the seabed at a depth of 1-8 m in Suruga Bay, and seaweed was cultivated. The product shown in FIG. 1 (E) leaned against the underwater rocky place.

  After 6 months, the growth of wakame was observed. The observation results are shown in Fig. 2 (A color drawing (Fig. 2) will be attached separately in the property submission form). As apparent from FIG. 2, the seaweed grown on the concrete product of Example 1 was significantly better in growth and quality than the seaweed grown on the concrete product of Comparative Example 1.

  From the above results, it was found that the concrete product using the concrete admixture of the present invention has a function of purifying water and has an excellent biological growth effect.

It is a figure which shows an example of the concrete product of this invention. It is drawing which observed the growth state of the seaweed which adhered and grew to the concrete product of Example 1 and Comparative Example 1. FIG.

Explanation of symbols

  a ... Reinforcing material (rebar)

Claims (1)

A small hole is provided in a surface portion of a concrete product containing a concrete admixture containing at least one selected from the group consisting of graphite silica, barley-stone, Io stone, grandmother sacred stone, air stone, amaterite, and 侑A method for growing seaweed, characterized by planting seaweed spores in a small hole and sinking them in an underwater rock.

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