KR101619954B1 - Manufacturing Method of Environment-friendly Grout Using Food Additive - Google Patents
Manufacturing Method of Environment-friendly Grout Using Food Additive Download PDFInfo
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- KR101619954B1 KR101619954B1 KR1020150134260A KR20150134260A KR101619954B1 KR 101619954 B1 KR101619954 B1 KR 101619954B1 KR 1020150134260 A KR1020150134260 A KR 1020150134260A KR 20150134260 A KR20150134260 A KR 20150134260A KR 101619954 B1 KR101619954 B1 KR 101619954B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
- C04B2103/445—Gelling agents
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Abstract
The present invention relates to a method of manufacturing an eco-friendly grout material using food additives, and it is an object of the present invention to provide a method of manufacturing an eco-friendly grout material by using a food additive, Thereby improving the efficiency of the apparatus.
(A) mixing sodium silicate with water at a ratio of 1: 0 to 2 on a weight basis to prepare an aqueous sodium silicate solution; (b) mixing cement and water at a ratio of 1: 0.7 to 1.5 based on a weight ratio to produce an aqueous cement solution; (c) diluting the food additive harmless to the human body to prepare a gel time adjusting agent capable of adjusting the gel time of the grout material; (d) mixing the cement aqueous solution and the gel time adjusting agent in a ratio of 9 to 13: 1 on a weight basis to prepare an aqueous environment cement aqueous solution; (e) mixing the aqueous sodium silicate solution and the environmentally-friendly aqueous cement solution at a ratio of 1: 1 to 3 based on a weight ratio to produce an eco-friendly grout material.
Description
The present invention relates to a method of manufacturing an environmentally friendly grout material using a food additive, and more particularly, to a method of manufacturing an environmentally friendly grout material using a food additive, and more particularly, to a grout- To a method for manufacturing an eco-friendly grout material.
Today, it is known that the extreme climatic phenomenon of the earth and the main reason for the rise in water temperature are found in the carbon dioxide in the air caused by the combustion of fossil fuels.
However, extreme climatic conditions and water temperature rise are affected not only by carbon dioxide but also by the use of cement.
Since Johnson's success in Portland cement manufacture in 1844, cement has helped build a huge concrete city on Earth today.
These cements can be seen as hydraulic building pools (cement pastes) that allow the lime to quickly set and cure.
On the other hand, calcium (Ca) element is the fundamental cause of clumping and hardening when limestone is dried.
The above-mentioned calcium is highly reactive and is crystallized in the natural world as calcium carbonate (CaCO 3 ). The calcium carbonate, limestone, is dissolved in water containing carbon dioxide and solidified as limestone again when dried. The formula is shown below.
CaCO 3 + CO 2 + H 2 O → Ca (HCO 3 ) 2
(Calcium carbonate) + (carbon dioxide) + (water) → (calcium bicarbonate)
Again calcium bicarbonate changes as shown below.
Ca (HCO 3 ) 2 - > CaCO 3 + CO 2 + H 2 O
(Calcium bicarbonate) → (calcium carbonate) + (carbon dioxide) + (water)
In other words, as the carbon dioxide and water are discharged, the calcium carbonate solidifies itself.
In addition, limestone (calcium carbonate) is taken from the limestone and forced to heat the calcium carbonate to release the carbon dioxide to make calcium lime (calcium oxide). When the lime powder is mixed with water, (Calcium hydroxide).
Today's cement buildings use the above-mentioned method. The problem is that calcium silicate hydrate and calcium hydroxide which are dissolved in cement when they are built are flowed into groundwater or sea in colloidal or aqueous solution state.
And calcium silicate hydrate and calcium hydroxide, once melted in water, meet more water and concentrate in groundwater or seawater in the hydrate state as diluted.
Such calcium hydroxide reaches a saturated state, which results in so-called "whitening phenomenon " in which calcium carbonate is precipitated in the offshore waters.
In particular, when calcium hydroxide turns into calcium carbonate, 1 gram of calcium hydroxide emits 78 calories (cal) of heat, which increases the temperature of the offshore waters by about three times faster than the average temperature of the waters, accelerating global warming and rising water temperatures It is known.
On the other hand, a construction method for injecting a filler to prevent leakage of water or soil stability in various civil engineering and construction works is referred to as "grouting". The grouting material used for such grouting is generally referred to as "grout material".
There are various types of grout materials, and in recent years, the use of chemical grout materials has been increasing.
The chemical grout material is a mixture of a chemical solution containing sodium silicate (water glass) as a main component and a chemical solution containing cement as a main component.
In order to perform the grouting for the order and the ground reinforcement by using the above-mentioned chemical grout material, a specific reactant which determines the gel time (Gel Time), which is the time of consolidation of the grout material, should be added.
The sodium silicate, cement, and specific reactants should be combined to form a perfect order and grouting grout for reinforcement.
However, in the conventional grouting method, a strong acid such as sulfuric acid, hydrochloric acid, or nitric acid is used as the specific reactant.
As a result, it is pointed out that there is a problem that the grouting operation threatens the health of the field workers and pollutes the water quality after use.
It is an object of the present invention to provide an eco-friendly grout material that prevents environmental pollutants from being discharged after grouting, by using a food additive as a specific reactant.
Another object of the present invention is to improve the efficiency of the work because it is easy for the worker to handle in the field and there is no risk of the raw material.
It is a further object of the present invention to provide a method of controlling a suitable gel time according to the soil in the field, thereby making it possible to create a permeability suitable for the field soil.
It is still another object of the present invention to provide a grout material having a water-permeable coefficient of a grout material which is remarkably small, so that a fine space is also penetrated, thereby obtaining a grout material having a good water-drawing effect.
It is still another object of the present invention to provide a grouting material which is very excellent in compressive strength and which can improve the quality of grouting.
In order to accomplish the above object, the present invention provides a method for producing a grout material for use in grouting work in civil engineering and building construction, comprising the steps of: (a) mixing sodium silicate and water at a ratio of 1: Preparing an aqueous sodium solution; (b) mixing cement and water at a ratio of 1: 0.7 to 1.5 based on a weight ratio to produce an aqueous cement solution; (c) mixing a food additive harmless to the human body with water to prepare a gel time adjusting agent capable of adjusting the gel time of the grout material; (d) mixing the cement aqueous solution and the gel time adjusting agent in a ratio of 9 to 13: 1 on a weight basis to prepare an aqueous environment cement aqueous solution; (e) mixing the aqueous sodium silicate solution and the environmentally-friendly aqueous cement solution at a ratio of 1: 1 to 3 based on a weight ratio to produce an eco-friendly grout material.
The food additive in step (c) is propionic acid, and the propionic acid and water are mixed in a ratio of 1: 8 to 20 based on the weight ratio to prepare a gel time adjusting agent.
The food additive in step (c) is oxalic acid. The oxalic acid and water are mixed in a ratio of 1: 5 to 12 based on the weight ratio to prepare a gel time adjusting agent.
Also, the food additive in step (c) is succinic acid, and the succinic acid and water are mixed in a ratio of 1:20 to 25 on the basis of the amount ratio, thereby preparing a gel time adjusting agent.
The food additive in step (c) is malic acid, and the malic acid and water are mixed in a ratio of 1: 7 to 15 based on the weight ratio, thereby preparing a gel time adjusting agent.
According to the present invention, by using a food additive in the production of a grout material, there is an effect that environmental pollutants are not discharged after grouting.
In addition, it is easy for the operator to handle in the field, and there is no risk to the raw material, so that the work efficiency can be improved.
In addition, it is possible to freely adjust a suitable gel time according to the soil of the site, thereby providing an appropriate penetration rate for the site soil.
In addition, the permeability coefficient of the grout material is remarkably small, so that the fine space can be penetrated, thereby improving the order effect.
In addition, there is an effect that the compression strength is very excellent and the quality of the grouting construction is improved.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a process for producing an environmentally friendly grout material according to the present invention using propionic acid. FIG.
2 is a view schematically showing a process for producing an environmentally friendly grout material using oxalic acid according to the present invention.
3 is a view schematically showing a process for producing an eco-friendly grout material according to the present invention using succinic acid.
4 is a view schematically showing a process for producing an environmentally friendly grout material according to the present invention using malic acid.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The conventional method of producing a grout material by mixing sodium silicate and an aqueous cement solution (hereinafter referred to as LW method (Labile Wasser Glass)) requires a gel time of 60 seconds or more, which is the time for consolidating the grout material.
Also, according to the conventional LW method, in the case of soft ground where ground water flows or water exists in the ground, the gel time of the grout material is too long, so that the grout material flows together with the ground water to pollute the ground water.
In addition, the so-called " whitening phenomenon "occurs in which calcium carbonate is precipitated by the reaction of silicate of sodium silicate and Ca ions in the cement component by loosening the non-consolidated grout material.
However, according to the present invention, since the grout material is eco-friendly and the gel time is about 30 seconds, the above problem can be solved.
The first step of the method for manufacturing an eco-friendly grout material according to the present invention is a step of preparing sodium silicate aqueous solution by mixing water with sodium silicate (three types of water glass), mixing sodium silicate and water at a weight ratio of 1: 0 to 2, Sodium aqueous solution is prepared.
The second step is a step of preparing a cement aqueous solution by mixing general cement and water. The cement aqueous solution is prepared by mixing general cement and water at a weight ratio of 1: 0.7 to 1.5.
The third step is to prepare a gel time modifier that can maintain the Gel Time appropriately to adjust the permeability of the grout material to the field soil.
The gel time adjusting agent is prepared by mixing a food additive and water. Examples of the food additive include propionoc acid used as a preservative for bread or pastry, starch hydrolyzed to produce starch syrup and glucose, Oxalic acid used as a preparation additive, succinic acid used as a seasoning by mixing with sodium glutamate, or malic acid used as an acidic taste of a soft drink can be used.
The propionic acid and water are mixed at a weight ratio of 1: 8 to 20, the oxalic acid and water are mixed at a weight ratio of 1: 5 to 12, the succinic acid and water are mixed at a weight ratio of 1:20 to 25, Are mixed at a weight ratio of 1: 7 to 15 to prepare a gel time adjusting agent.
The fourth step is a step of preparing an environmentally-friendly cement aqueous solution by mixing the cement aqueous solution and the gel time adjusting agent. The cement aqueous solution and the gel time adjusting agent are mixed at a weight ratio of 9 to 13: 1 to prepare an aqueous solution of an environmentally friendly cement .
In the fifth step, the aqueous sodium silicate solution and the environmentally-friendly aqueous cement solution are mixed at a weight ratio of 1: 1 to 3 to prepare the eco-friendly grout material of the present invention.
Hereinafter, preferred embodiments and comparative examples according to the present invention will be described.
≪ Example 1 >
1 shows a first embodiment of the present invention.
In Example 1 according to the present invention, an aqueous solution of sodium silicate was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, mixing the common cement and water at a weight ratio of 1: 0.7 to 1.5 Thereby producing an aqueous cement solution.
Then, propionic acid and water are mixed at a weight ratio of 1: 8 to 20 to prepare a gel time adjusting agent.
Then, the cement aqueous solution and the gel time adjusting agent are mixed at a weight ratio of 9 to 13: 1 to prepare an aqueous solution of the environmentally friendly cement. The aqueous solution of sodium silicate and the aqueous solution of environmentally friendly cement are mixed at a weight ratio of 1: Eco-friendly grout material.
The grout material of Example 1 produced by the above method was compared with the following Comparative Example.
≪ Comparative Example 1-1 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous sodium silicate solution, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 1.2.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 1-1, the gel time adjusting agent according to the present invention was not added.
≪ Comparative Example 1-2 >
An aqueous sodium silicate solution was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 0.7 to 1.5.
Then, propionic acid and water were mixed at a weight ratio of 1: 8 to 20 to prepare a gel time adjusting agent.
Then, the cement aqueous solution, the gel time adjusting agent, and calcium chloride (CaCl 2 ) were mixed at a weight ratio of 9 to 13: 1: 0. to 0.6 to prepare an aqueous solution of an environmentally friendly cement.
The aqueous sodium silicate solution and the environmentally friendly aqueous cement solution were mixed at a weight ratio of 1: 1 to 3 to prepare a final eco-friendly grout material.
That is, in Comparative Example 1-2, the gel time adjusting agent according to the present invention and calcium chloride, which is a water-dispersing agent, were used in the preparation of the environmentally-friendly aqueous cement solution.
≪ Comparative Example 1-3 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous solution of sodium silicate. The aqueous solution of sodium silicate was mixed with water and a calcium chloride (CaCl 2 ) as a diluent in a weight ratio of 1: 1.2: 0.02 to 0.06 To prepare an aqueous cement solution.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Examples 1-3, calcium chloride, a sizing agent, was used without using the gel time adjusting agent according to the present invention.
The following Table 1 shows the results of the grout re-gel time experiment of Example 1, Comparative Examples 1-1, 1-2, and 1-3.
As can be seen from the results of the above [Table 1], the grout re-gel time of Example 1 of the present invention was remarkably shortened compared with the gel time of Comparative Example 1-1 in which the gel time modifier according to the present invention was not used .
The reason why the gel time of Comparative Example 1-2 and Comparative Example 1-3 is shorter than the gel time of Example 1 is that calcium chloride, which is a water-dispersible material, is used.
≪ Example 2 >
Fig. 2 shows a second embodiment of the present invention.
In Example 2 according to the present invention, an aqueous solution of sodium silicate was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, mixing the common cement and water at a weight ratio of 1: 0.7 to 1.5 Thereby producing an aqueous cement solution.
Then, oxalic acid and water are mixed at a weight ratio of 1: 5 to 12 to prepare a gel time adjusting agent.
Then, the cement aqueous solution and the gel time adjusting agent are mixed at a weight ratio of 9 to 13: 1 to prepare an aqueous solution of the environmentally friendly cement. The aqueous solution of sodium silicate and the aqueous solution of environmentally friendly cement are mixed at a weight ratio of 1: Eco-friendly grout material.
The grout material of Example 2 produced by the above method was compared with the following Comparative Example.
≪ Comparative Example 2-1 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous sodium silicate solution, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 1.2.
Then, the sodium silicate aqueous solution and the cement aqueous solution were mixed at a ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 2-1, the gel time adjusting agent according to the present invention was not added.
≪ Comparative Example 2-2 &
An aqueous sodium silicate solution was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 0.7 to 1.5.
Then, a gel time adjusting agent was prepared by mixing oxalic acid and water in a weight ratio of 1: 5-12.
The cement aqueous solution, the gel time adjusting agent, and calcium chloride (CaCl 2 ) were mixed at a weight ratio of 9 to 13: 1: 0.2 to 0.6 to prepare an aqueous solution of an environmentally friendly cement.
The aqueous sodium silicate solution and the environmentally friendly aqueous cement solution were mixed at a weight ratio of 1: 1 to 3 to prepare a final eco-friendly grout material.
That is, in Comparative Example 2-2, the gel time adjusting agent according to the present invention and calcium chloride, which is a water-dispersing agent, were used in the preparation of the environmentally-friendly aqueous cement solution.
≪ Comparative Example 2-3 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous solution of sodium silicate. The aqueous solution of sodium silicate was mixed with water and a calcium chloride (CaCl 2 ) as a diluent in a weight ratio of 1: 1.2: 0.02 to 0.06 To prepare an aqueous cement solution.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 2-3, calcium chloride, which is a sizing agent, was used without using the gel time adjusting agent according to the present invention.
The following Table 2 shows the results of the grout re-gel time experiment of Example 2 and Comparative Examples 2-1, 2-2 and 2-3.
As can be seen from the results of the above [Table 2], the grout re-gel time of Example 2 of the present invention was remarkably shortened compared with the gel time of Comparative Example 2-1 in which the gel time adjuster according to the present invention was not used .
The reason why the gel time of Comparative Example 2-2 and Comparative Example 2-3 is shorter than the gel time of Example 2 is that calcium chloride, which is a water-dispersible material, is used.
≪ Example 3 >
Fig. 3 shows a third embodiment of the present invention.
In Example 3 according to the present invention, an aqueous solution of sodium silicate was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, and mixed with common cement and water at a weight ratio of 1: 0.7 to 1.5 Thereby producing an aqueous cement solution.
Then, succinic acid and water are mixed at a weight ratio of 1:20 to 35 to prepare a gel time adjusting agent.
Then, the cement aqueous solution and the gel time adjusting agent are mixed at a weight ratio of 9 to 13: 1 to prepare an aqueous solution of the environmentally friendly cement. The aqueous solution of sodium silicate and the aqueous solution of environmentally friendly cement are mixed at a weight ratio of 1: Eco-friendly grout material.
The grout material of Example 3 produced by the above method was compared with the following Comparative Example.
≪ Comparative Example 3-1 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous sodium silicate solution, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 1.2.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 3-1, the gel time adjusting agent according to the present invention was not added.
≪ Comparative Example 3-2 &
An aqueous sodium silicate solution was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 0.7 to 1.5.
Then, succinic acid and water were mixed at a weight ratio of 1:20 to 25 to prepare a gel time adjusting agent.
The cement aqueous solution, the gel time adjusting agent, and calcium chloride (CaCl 2 ) were mixed at a weight ratio of 9 to 13: 1: 0.2 to 0.6 to prepare an aqueous solution of an environmentally friendly cement.
The aqueous sodium silicate solution and the environmentally friendly aqueous cement solution were mixed at a weight ratio of 1: 1 to 3 to prepare a final eco-friendly grout material.
That is, in Comparative Example 3-2, the gel time adjusting agent according to the present invention and calcium chloride, which is a water-dispersing agent, were used in the preparation of the environmentally-friendly aqueous cement solution.
≪ Comparative Example 3-3 &
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous solution of sodium silicate. The aqueous solution of sodium silicate was mixed with water and a calcium chloride (CaCl 2 ) as a diluent in a weight ratio of 1: 1.2: 0.02 to 0.06 To prepare an aqueous cement solution.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 3-3, calcium chloride, which is a sizing agent, was used without using the gel time adjusting agent according to the present invention.
The following Table 3 shows the grout re-gel time test results of Example 3 and Comparative Examples 3-1, 3-2 and 3-3.
As can be seen from the results of the above [Table 3], the grout re-gel time of Example 3 of the present invention was remarkably shortened compared to the gel time of Comparative Example 3-1 without using the gel time modifier according to the present invention .
The reason why the gel time of the above Comparative Examples 3-2 and 3-3 is shorter than the gel time of the Example 3 is that calcium chloride, which is a water-dispersible material, is used.
<Example 4>
4 shows a fourth embodiment of the present invention.
In Example 4 according to the present invention, an aqueous solution of sodium silicate was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, mixing general cement and water at a weight ratio of 1: 0.7 to 1.5 Thereby producing an aqueous cement solution.
Then, malic acid and water are mixed at a weight ratio of 1: 7 to 15 to prepare a gel time adjusting agent.
Then, the cement aqueous solution and the gel time adjusting agent are mixed at a weight ratio of 9 to 13: 1 to prepare an aqueous solution of the environmentally friendly cement. The aqueous solution of sodium silicate and the aqueous solution of environmentally friendly cement are mixed at a weight ratio of 1: Eco-friendly grout material.
The grout material of Example 4 produced by the above method was compared with the following Comparative Example.
≪ Comparative Example 4-1 >
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous sodium silicate solution, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 1.2.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 4-1, the gel time adjusting agent according to the present invention was not used.
≪ Comparative Example 4-2 &
An aqueous sodium silicate solution was prepared by mixing sodium silicate (three kinds of water glass) and water at a weight ratio of 1: 0 to 2, and a cement aqueous solution was prepared by mixing common cement and water at a weight ratio of 1: 0.7 to 1.5.
Then, malic acid and water were mixed at a weight ratio of 1: 7 to 15 to prepare a gel time adjusting agent.
The cement aqueous solution, the gel time adjusting agent, and calcium chloride (CaCl 2 ) were mixed at a weight ratio of 9 to 13: 1: 0.2 to 0.6 to prepare an aqueous solution of an environmentally friendly cement.
The aqueous sodium silicate solution and the environmentally friendly aqueous cement solution were mixed at a weight ratio of 1: 1 to 3 to prepare a final eco-friendly grout material.
That is, in Comparative Example 4-2, the gel time adjusting agent according to the present invention and calcium chloride, which is a water-dispersing agent, were used in the preparation of the environmentally-friendly cement aqueous solution.
≪ Comparative Example 4-3 &
Sodium silicate (three kinds of water glass) and water were mixed at a weight ratio of 1: 1 to prepare an aqueous solution of sodium silicate. The aqueous solution of sodium silicate was mixed with water and a calcium chloride (CaCl 2 ) as a diluent in a weight ratio of 1: 1.2: 0.02 to 0.06 To prepare an aqueous cement solution.
The sodium silicate aqueous solution and the cement aqueous solution were mixed at a weight ratio of 1: 1 to prepare a final grout material.
That is, in Comparative Example 4-3, calcium chloride, a sizing agent, was used without using the gel time adjusting agent according to the present invention.
The following Table 4 shows the results of the grout re-gel time experiment of Example 4 and Comparative Examples 4-1, 4-2 and 4-3.
As can be seen from the experimental results shown in Table 4, the grout re-gel time of Example 4 of the present invention was significantly shortened compared with the gel time of Comparative Example 4-1 in which the gel time modifier according to the present invention was not used .
The reason why the gel time of Comparative Example 4-2 and Comparative Example 4-3 is shorter than the gel time of Example 4 is that calcium chloride, which is a water-dispersible material, is used.
According to the present invention, an environmentally friendly grout material can be produced, and the gel time of the grout material can be shortened without adding any additional material.
In addition, since there is no risk of the raw material, it is easy for the operator to handle in the field so that the work efficiency can be improved.
In addition, it is possible to freely adjust a suitable gel time according to the soil of the site, to provide a permeability suitable for the site soil, and the permeability coefficient of the grout material is small.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.
Claims (5)
(a) mixing sodium silicate with water at a ratio of 1: 0 to 2 on a weight basis to prepare an aqueous solution of sodium silicate;
(b) mixing cement and water at a ratio of 1: 0.7 to 1.5 based on a weight ratio to produce an aqueous cement solution;
(c) mixing a food additive harmless to the human body with water to prepare a gel time adjusting agent capable of adjusting the gel time of the grout material;
(d) mixing the cement aqueous solution prepared in the step (b) and the gel time adjusting agent prepared in the step (c) at a ratio of 9 to 13: 1 on a weight basis to prepare an aqueous environment cement aqueous solution;
(e) mixing the aqueous sodium silicate solution prepared in the step (a) and the aqueous environment-cement aqueous solution prepared in the step (d) at a ratio of 1: 1 to 3 based on the weight ratio to produce an environmentally friendly grout material; Including,
The food additive in step (c) is succinic acid,
Wherein the succinic acid and water are mixed in a ratio of 1:20 to 25 on a weight basis to produce a gel time adjusting agent.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20180076847A (en) * | 2016-12-28 | 2018-07-06 | 길병옥 | Grouting materials and injection nozzle equipment spraying thereof in low and midium pressure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005154608A (en) | 2003-11-26 | 2005-06-16 | Denki Kagaku Kogyo Kk | Grouting agent and grouting method |
| JP2012012483A (en) * | 2010-06-30 | 2012-01-19 | Nippon Chem Ind Co Ltd | Grout material for grouting and grouting method |
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2015
- 2015-09-23 KR KR1020150134260A patent/KR101619954B1/en active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005154608A (en) | 2003-11-26 | 2005-06-16 | Denki Kagaku Kogyo Kk | Grouting agent and grouting method |
| JP2012012483A (en) * | 2010-06-30 | 2012-01-19 | Nippon Chem Ind Co Ltd | Grout material for grouting and grouting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180076847A (en) * | 2016-12-28 | 2018-07-06 | 길병옥 | Grouting materials and injection nozzle equipment spraying thereof in low and midium pressure |
| KR101912508B1 (en) * | 2016-12-28 | 2018-12-28 | 길병옥 | Injection nozzle equipment spraying grouting materials in low and midium pressure |
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