JPH08283716A - Solidifier - Google Patents

Abstract

PURPOSE: To obtain a solidifier which can solidify soil or a powder of wastes easily within a short time without fail. CONSTITUTION: This solidifier is obtained by mixing at a powder comprising at least one member selected from among a moisture modifier comprising at least one kind of member selected from among rice hulls, zeolites, coffee bean residues, etc., a solidification suppresant comprising at least one member selected from among a zeolite, a chelating agent, a salt absorber, a salt diluent, etc., and a strength developer comprising at least one member selected from among sand, gravels, fly ash, slag, etc., with a swelling agent comprising a fly powder being a finely powdered by-product produced from a process for producing a fine konjak powder and mainly consisting of moisture, fats, proteins, carbohydrates, fibers and ashes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solidifying agent for solidifying soil or solidifying sludge or powdery waste.

[0002]

2. Description of the Related Art At excavation work sites, landslide sites, etc., it is desired to solidify the soil reliably and easily in a short time.

From such a point of view, conventionally, for example, a method of solidifying the ground as disclosed in Japanese Patent Publication No. 56-21780 has been proposed.

The invention disclosed in Japanese Patent Publication No. 56-21780 is a method of injecting a sodium silicate solution or a mixed liquid of the same solution and a cement suspension as a coagulant into the ground to solidify the ground. Gel is generated by injecting fine powder into the ground.

As is well known, mannan, which is a component of konjac refined powder, expands when it contains water and coagulates against alkali. Therefore, in the above-described conventional invention, the harmful and excessive alkali generated by the injection of the coagulating liquid is contained and consumed in the generated gel to lower and stabilize the pH of the ground condensate and its surroundings. It had a significant effect in terms of coagulation.

In addition to the above-mentioned soil coagulation treatment,
Safe disposal of powder or mud-like waste containing harmful substances has become a major issue in modern times. The means conventionally used to treat this powder or mud-like waste is a solidification technique using concrete, which can contain harmful substances to some extent.

[0007]

However, first of all,
The conventional Japanese Patent Publication No. 56-
In the invention disclosed in Japanese Patent No. 21780, the content of konjac refined powder or the like is about 5% with respect to the coagulating liquid which is a gelling agent such as sodium silicate solution, and the transportation cost of the liquid coagulating liquid is high. There was a problem.

[0008] Further, by making the liquid state, a plurality of components react in the liquid, and the reaction which should be originally expressed in the soil progresses before the treatment for ground coagulation, resulting in coagulation. It has the drawbacks of reduced efficacy and lack of stability of quality.

[0009] When such a coagulating liquid is injected into soil, it is apt to be considered that it can be obtained with better permeability, agitation property, and mixability than a solid substance, simply because it is a liquid. Is. Certainly, if it is expected that the reaction will take a long period of time, it can be inferred that the stirring and mixing of the coagulating liquid and the soil are sufficiently achieved and the permeability is also improved.

However, in a situation where solidification in a short time is desired, such as treatment at a construction site or a landslide site, there is no guarantee or confirmation means for obtaining a uniform mixed state.

Therefore, in order to confirm a uniform mixed state, a means for coloring the coagulating liquid has been adopted, but in practice, when mixed in the soil, the colored state is visually recognized to determine the mixed state. It is not practical because it is difficult to determine the coloring situation by introducing a complicated measuring instrument.

Further, considering the gelation of konjac mannan chemically, the alkali treatment (that is, contact with alkali) is necessary as described above. As can be seen in the reaction formula disclosed in Japanese Patent Publication No. 56-21780 of the above-mentioned conventional example, when konjac mannan is gelled, it is accompanied by the consumption of alkali, and at the same time, the elimination of the acetyl group from the mannan molecule, namely, acetic acid Is required to be released.

In the conventional coagulant on liquid, the separation of the acetic acid from the mannan molecule and the unreacted alkali in the solution are combined (ionized state) to form, for example, sodium acetate,
It became another factor that hindered the gelation reaction, and the soil coagulation was not smoothly obtained.

The above-mentioned conventional Japanese Examined Patent Publication No. 56-21
Since konjac refined powder and the like, which are important components in the invention disclosed in Japanese Patent Publication No. 780, are basically foods, they are expensive.

Further, the soil is composed of a complex system of organic components, inorganic components, water, and voids, and the coagulation liquid is injected and mixed into the soil of such a form depending on the situation at each site. Requires advanced know-how based on experience. If the coagulation liquid is injected only into the soft part of the soil like the shield method, it can be said that it is a simple method, but it can be applied to the entire soil in a certain area such as a construction site or a landslide site. On the other hand, the coagulation liquid cannot be uniformly mixed.

Next, when solidified by concrete for treating powdery or muddy wastes containing harmful substances, it elutes for wastes having a large surface area such as incineration ash and mottle. Although the absolute amount of harmful substances can be suppressed to a very small amount, it is still insufficient for clearing the regulations, and it was necessary to treat the target by adding 200% cement of the target.

Since this amount of cement is required, not only does the total amount of waste become bulky,
The cost is high even though the waste is simply treated.

In addition to having a large surface area, waste often contains inorganic and organic components at the same time. Therefore, even wastes called incineration ash cannot be reliably treated unless a surfactant or a coagulant is added in order to suppress the scattering.

A material that stabilizes waste containing both inorganic and organic components and at the same time promises physical strength must itself hold both inorganic and organic components in good balance. The surfactant can be considered as a material having both functions in one molecule, but the surface activity of the surfactant has a problem of re-dissolving the contained harmful substances upon exposure to rainwater.

Therefore, the present invention has been proposed in order to solve the above-mentioned drawbacks, inconveniences and problems of the prior art and to meet the demand, and to simply and surely solidify the soil in a short time, or , To solidify powdery waste.

[0021]

In order to solve the above problems, the solidifying agent of the present invention is a solidifying agent that stirs and mixes with soil to solidify the ground, and is one of rice husks, zeolite, coffee slag and the like. Or a water content adjusting agent having a plurality of components, zeolite, a chelating agent, a salt absorbent,
Any one or more of a solidification disorder inhibitor containing any one or more of a salt diluting agent and a strength enhancer containing one or more of sand, gravel, fly ash, slag, etc. And a swelling agent composed of a flying powder composed mainly of water, fat, protein, carbohydrates, fiber and ash, in the form of a fine powder that is a by-product obtained in the konjac refinement process. It is characterized by being a mixture of.

In addition, it is a solidifying agent that stirs and mixes with soil to solidify the ground. Inorganic powder containing any one or a plurality of concrete waste materials, casting waste sand, fly ash and the like as chaff, zeolite A moisture regulator containing any or a plurality of components such as coffee grounds, a zeolite, a chelating agent, a salt absorbent, a solidification disorder inhibitor containing any one or a plurality of components such as a salt diluting agent,
Sand, gravel, fly ash, with a strength-developing agent containing any or more of slag, etc., a powdery substance formed by mixing any one or more, and a by-product obtained in the konjac refinement process. It is characterized in that it is in the form of a fine powder and is mixed with a swelling agent composed of water, fat, protein, carbohydrate, fiber, and flying powder having ash as a main component.

Further, it is a solidifying agent which is stirred and mixed with a sludge or powdery waste containing an organic substance such as a coagulant, and is pressed and solidified to solidify. Any one or a plurality of chaff, zeolite, coffee slag, etc. A moisture regulator as an ingredient,
Zeolite, chelating agent, salt absorbent, salt diluting agent, etc. solidification disorder inhibitor containing one or more components, and sand, gravel, fly ash, slag, etc. any or more components strength development With the agent, a powdery body formed by mixing any or more of them, in the form of fine powder that is a by-product obtained in the konjac refinement process, with water, fat, protein, carbohydrates, fiber, and ash as the main components. And a swelling agent composed of flying powder.

As the swelling agent, konjac refined powder may be used.

[0025]

Therefore, when the solidifying agent according to the present invention is stirred and mixed with soil to solidify the ground, the powdery substance which constitutes this solidifying agent by mixing and the swelling agent perform the following actions.

That is, first, the powdery substance is constituted by mixing any one or a plurality of the moisture conditioner, the solidification disorder inhibitor and the strength enhancer. Whether to use a single material or a mixture of a plurality of materials, and the ratio in that case are selected and determined.

The moisture conditioner is used for facilitating mixing and absorbing a certain amount of excess moisture. Depending on the soil condition, one or more of chaff, zeolite, coffee slag, etc. may be used. adopt.

The solidification disorder inhibitor is used as an adsorbent for harmful substances which impair solidification, and depending on the soil condition and the degree and amount of harmful substances, zeolite, chelating agent, salt absorbent, salt Any one or a plurality of diluents or the like is used as a component.

Further, the strength enhancer is for ensuring the strength of the soil after solidification, and depending on the state of the soil,
It contains one or more of sand, gravel, fly ash, slag, etc. Further, the strength enhancer may simultaneously function as a moisture regulator.

The swelling agent swells while absorbing the water in the voids in the soil or the adsorbed or adhered water of each soil component, and holds each component beyond the physical space in the voids and the difference in the components. , Each component is glued together, and then it is solidified by contact with soil or cement components such as calcium and magnesium, volume reduction proceeds, each component is packed more densely, strength is increased. Give it.

As a swelling agent, here, a fine powder, which is a by-product obtained in the konjac smelting process, contains water, fat,
Flying powder containing protein, carbohydrate, fiber and ash as the main components sufficiently exhibits this action, but konjac refined powder itself may be used.

As in the present invention, when the gelling reaction is carried out on the solid matter in the dry state or the soil in the state where the water content is appropriately adjusted and the swelling agent in the kneaded state, the surrounding matrix There is not enough water around the konjac mannan particles (gel) even after the reaction between the alkali and the konjac mannan molecule, and the konjac mannan particles swell while gradually absorbing the surrounding water.

Further, since the alkali component is consumed at the same time as the swelling, the resulting time difference between the alkali consumption and the elimination of the acetyl group, the decomposition of the detached acetic acid by the soil bacterium, the mixing and the dispersion in the stirring process Qi will increase the stability of the gel.

According to the above-mentioned constitution, a water adjusting agent which facilitates mixing and absorbs a certain amount of excessive water, a solidification obstacle inhibitor used as an adsorbent of harmful substances which impair solidification, A strength-enhancing agent that secures the strength of the soil after coagulation, and a powdery material in which any one or more of them is mixed, and coagulation and volume reduction by contact with soil or cement components calcium and magnesium As the solidification progresses, the solidifying agent is constituted by a swelling agent that more densely packs each component and imparts strength, and the solidifying agent is mixed with the soil by stirring to solidify the ground stably and surely.

Similarly, the solidifying agent is mixed with the soil by stirring,
When the ground is solidified, the above-mentioned powdery material and the swelling agent are mixed with the inorganic powder to form the solidifying agent. The inorganic powder here has any or a plurality of concrete waste materials, waste casting sand, fly ash, etc. as a component, and solidifies the organic components in the soil to develop a certain level of strength.

The use of a natural polymer agent containing konjac flour, flying powder, etc. has a function as a gelling agent and provides a sense of security due to a natural product. Is not enough in terms of physical strength. Therefore, the strength is imparted by mixing the above-mentioned various inorganic powders as a material for improving the appropriate dilution effect of the organic component and the adhesion (adhesiveness) with the organic substance.

Then, even when the solidifying agent of the present invention is stirred and mixed with a sludge or powdery waste containing an organic substance such as a coagulant, the solidifying agent is composed of the above-mentioned powdery substance and a swelling agent and is pushed together with the object. By solidifying, it can be solidified by the same action.

[0038]

[Examples] Flying powder as a swelling agent used in the present invention is a by-product scattered around the stone mill during the production of konjac refined powder, and is a relatively light and very fine powdery form including the skin of konjac potato and the like. Is.

Flying powder is a kind of industrial waste containing a large amount of astringent components, and the disposal cost is high.
The utility value as an industrial product as in the present invention can be obtained, and a significant cost reduction can be expected as compared with the use of konjac refined powder.

In the present invention, flying powder is used as a swelling agent, and the taste of food is not required. Flying powder is a little inferior to konjac refined flour in terms of mannan content, but it achieves rather good operability in mixing and mixing with soil.

That is, since konjac refined powder has a high reaction rate due to the high content of mannan and the high degree of gelation, quick and short-time construction work is required, whereas flying powder is The operability is good because of the moderate reactivity.

The components of the flying powder used in the present invention are as follows: water 14.5%, fat 0.6%, protein 22.
5%, carbohydrates 40.9%, fiber 2.5%, ash 7.1
%.

An experimental example in which the ground is solidified by using the solidifying agent according to the present invention will be shown below. Experimental Example 1 is a construction example of solidifying a farm road ground in an apple garden, and this farm road was covered with black soil up to 70 to 80 cm in the ground.

Since the construction was carried out in October, the soil was in a relatively dry state, and after the solidifying agent according to the present invention and the soil having a surface layer of 10 to 20 cm were sufficiently stirred and mixed, water was added. Spraying was performed, and pressure was appropriately applied.

The solidifying agent here is fly ash 40.
Parts, 15 parts of cement, and 0.45 parts of flying powder, which were mixed by stirring in an amount of 20 kg per 1 m ³ of soil.

A tiller was used for stirring and mixing the solidifying agent and the soil, water was sprayed in a shower during the stirring and mixing, and pressure was applied by a roller along with homogenization.

Table 1 below shows the numerical values obtained by collecting the mixture of the solidifying agent and the soil as a sample sample in a cylindrical pot immediately before the mixing and compressing, and measuring the strength after curing on the next day and 27 days. .

[0048]

[Table 1]

Here, the "bending strength" is the strength that opposes the pressure applied to the cylindrical sample sample taken out from the pot in the left-right direction, and the "compressive strength" is the pressure applied in the up-down direction. Strength against.

Samples A to F are on an agricultural road of about 400 m with a height difference of 20 m in an apple garden,
The samples are collected at almost equal intervals from lowland to highland. According to this test, it is possible to maintain the strength enough to exceed the value of 30 to 40 kg / cm ² that enables transportation of agricultural road machines. It was possible, and even after a year and a half, visual inspection showed almost no damage.

Next, in Experiment 2, the clay soil in the factory site along the river was paved according to the present invention on the road and a temporary storage area for luggage, and the construction was carried out while avoiding rain. The soil contained 140% water because the target area was clayey.

The solidifying agent here is fly ash 40.
Parts, 15 parts of cement, and 2 parts of flying powder, which were mixed by stirring in an amount of 20 kg per 1 m ³ of soil. , 5 kg per 1 m ^{3 of} fly ash were mixed to facilitate uniform stirring with the solidifying agent.

The following table 2 shows the numerical values obtained by collecting the mixture of the solidifying agent and the soil as a sample sample in the cylindrical pot after the mixture was filled with the soil, and measuring the strength after curing for the next day and 27 days. .

[0054]

[Table 2]

Sample samples 1 and 2 are those with a large amount of water and fly ash was added first, and sample samples 3 and 4 were those with a water content of 140%, both of which could withstand use the next day. It can be understood that the strength is as high as possible.

[0056]

The present invention is constructed as described above. That is, the component of the present invention, from the powdery substance constituted by mixing any one or more of the moisture regulator, the solidification disorder inhibitor and the strength enhancer, and the swelling agent constituted by flying powder, Since it is a solidifying agent that is mixed and stirred with soil or the like on site, it can be easily transported and the cost can be kept low.

Since it is not in a liquid state during transportation, the mutual reaction of a plurality of components, which should be expected in the soil, does not occur during transportation, and therefore, sufficient coagulation efficacy and stability of quality when constructed on site. Can be secured.

In addition, when mixing with soil, it is possible to visually recognize the mixed state by using, for example, a white component such as lime, as an index, so that the operator is not required to have deep experience, and therefore, it is necessary and sufficient. It is possible to achieve good mixing and improve operability. Furthermore, the kneading of solids can realize homogenization of the construction site, and homogenization will provide the desired long-term stability. The construction department can be easily managed.

Since water is adjusted by sprinkling water after mixing with soil, abnormal gelation and agglomeration can be controlled to obtain a uniform mixed / solidified product.

Since flying powder is used as the swelling agent, the reaction is more appropriate in time than the konjac refined powder, so that the operability is rather good.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tadao Zushi 2-5-1 Ichikawa, Chiba Prefecture

Claims (4)

[Claims] 1. A solidifying agent which stirs and mixes with soil to solidify the ground, and includes a water content adjusting agent containing any one or more of chaff, zeolite, coffee grounds, etc., zeolite, a chelating agent, and a salt content. Absorbent, solidification disorder inhibitor containing any one or more of a salt diluting agent, etc., and sand, gravel, fly ash, slag, etc. any one or more of a strength enhancer containing a component, or A powder composed of a mixture of a plurality of powders, and a fine powder that is a by-product obtained in the konjac refinement process, which is composed of water, fat, protein, carbohydrate, fiber, and flying powder containing ash as a main component. A solidifying agent comprising a swelling agent and a mixture. 2. A solidifying agent which stirs and mixes with soil to coagulate the ground, and includes chaff and zeolite in inorganic powders containing any or a plurality of concrete waste materials, foundry sand, fly ash and the like. A water content adjusting agent containing any or a plurality of coffee dregs and the like, a zeolite, a chelating agent, a salt absorbent, a solidification disorder inhibitor containing any one or more of a salt diluting agent, etc., and sand, Gravel, fly ash, with a strength enhancer containing any or more of slag or the like as a component, and a powdery body constituted by mixing any one or more of them, a fine powder that is a by-product obtained in the konjac refinement process A solidifying agent characterized by mixing a swelling agent composed of flying powder containing water, fat, protein, carbohydrate, fiber, and ash as main components. 3. A solidifying agent which is stirred and mixed with an organic matter such as a flocculant or the like and mixed with a waste material in the form of powder, and is pressed and solidified to solidify. Any one or a plurality of ingredients such as chaff, zeolite, coffee grounds, etc. And a water content adjusting agent, zeolite, chelating agent, salt absorbent, salt diluting agent or the like solidification disorder inhibitor containing a plurality of components, sand, gravel, fly ash, any of slag or the like or A strength-developing agent having a plurality of components, a powdery body constituted by mixing any or more of them, in the form of a fine powder that is a by-product obtained in the konjac refinement process, water, fat, protein, carbohydrate, A solidifying agent characterized by mixing a swelling agent composed of fibers and ash as a main component with a flying powder. 4. The solidifying agent according to claim 1, 2 or 3, wherein konjac refined powder is used as the swelling agent.