KR20190048147A - Manufacturing Method of Concrete Form Oil and Concrete Form Oil manufactured thereof - Google Patents

Abstract

The present invention relates to a method of manufacturing a concrete release agent and a concrete release agent manufactured thereby. The method of manufacturing a concrete release agent comprises the following steps of: (step 1) obtaining a first mixture by adding rosin oil to mineral oil and stirring the same; (step 2) obtaining a second mixture by adding corn oil to the first mixture and stirring the same; (step 3) obtaining a third mixture by adding a surfactant to the second mixture and stirring the same; (step 4) obtaining a fourth mixture by adding water to the third mixture and stirring the same; and (step 5) manufacturing a concrete release agent by adding a defoamer to the fourth mixture and stirring the same. A concrete release agent manufactured by the method of the present invention is eco-friendly and harmless to a human body, and no VOC or environmental hormone is detected therefrom. Also, the concrete release agent has an excellent concrete release effect and excellent rebar bonding strength, can be applied by using a sprayer when applied onto a mold, has water resistance stronger than an oil-based release agent even when it rains, prevents deformation of a mold, improves durability, and shortens a construction period.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a concrete release agent,

The present invention relates to a method for producing a concrete release agent and a concrete release agent produced thereby. More specifically, the present invention relates to an environmentally friendly, harmless, The present invention relates to a method for producing a concrete release agent and a concrete release agent produced thereby.

When constructing a concrete structure such as a concrete pile, a bottom block or a concrete flooring, a metal mold such as aluminum is used to fit the shape of the object to be manufactured, and then a mold In the process of separating the form from the concrete structure, the mold is not easily separated by the coupling force between the concrete and the form, or a part of the concrete together with the form is separated from the concrete In this case, it is necessary to manually fill up the part of the concrete that has fallen off, so that a lot of production time and manpower are consumed.

In order to prevent the form from being separated from the concrete structure or to prevent the part of the concrete structure from being separated together with the formwork, a releasing agent (or release agent) is applied on the inner surface of the formwork so as to easily separate the form from the concrete structure, In this case, generally, waste oil is used as a release agent, or a lubricant, a kerosene, a light oil or the like is used alone or an appropriate amount of a pressure-sensitive adhesive is dissolved in a petroleum product. In this way, When the applied release agent is applied to the surface of the mold, the petroleum component evaporates and the remaining adhesive component forms a film, thereby easily separating the form from the concrete structure.

However, when oil-soluble such as waste oil containing a petroleum component is used as a release agent as described above, it is not only harmful to the environment but also causes a deterioration agent (waste oil) to remain on the surface of the concrete structure at the time of demolding, thereby contaminating the surface of the concrete structure, In such a case, the release agent may be washed over rainwater for a long period of time and may enter the soil or the river, thereby causing environmental pollution.

In recent years, a water-soluble releasing agent which is environmentally friendly and easily soluble in water has been developed and used in order to solve the problems of the above-mentioned oil-soluble releasing agent. As an example thereof, Korean Patent Registration No. 10-1376161 (Apr. Soluble effervescent concrete form release agent disclosed in Japanese Patent Application Laid-

Wherein the concrete form release agent comprises 70 to 85% by weight of a mineral oil, 5 to 10% by weight of a higher alcohol derivative, 1 to 5% by weight of a coconut fatty acid derivative, 0.5 to 3% by weight of a succinic acid derivative, 1 to 5% by weight of glycerin, 8% by weight.

The concrete form release agent may be applied by a spray coating method, which is advantageous in that it can be easily performed, but it is not easily dissolved in water because it contains glycerin.

Korean Patent Registration No. 10-1475184 (Feb. 22, 2014) discloses a water-soluble, water-soluble, water-soluble, water-soluble, water-soluble, water- A concrete form release agent is disclosed.

Although the eco-friendly water-soluble concrete form release agent is made of an eco-friendly material, it is environmentally friendly. However, it can be applied to a slab (top plate)

KR 10-1376161 B1 2014.03.19. KR 10-1475184 B1 2014.12.22.

An object of the present invention is to provide a process for producing a concrete stripper agent which is environmentally friendly, harmless to the human body, has no VOC or environmental hormone, is excellent in concrete stripping effect and excellent in reinforcing bar strength, and provides a concrete stripper agent produced thereby will be.

In order to achieve the above object, the present invention provides the following means.

The present invention relates to a method for producing mineral ounces comprising the steps of adding rosin oil to mineral ounces and stirring to obtain a first agitated product (step 1); Adding oxbow oil to the first agitated product and stirring to obtain a second agitated product (step 2); Adding a surfactant to the second agitated material and stirring to obtain a third agitated material (step 3); Adding water to the third agitated material and stirring to obtain a fourth agitated material (step 4); And adding a defoaming agent to the fourth stirred material and stirring to prepare a concrete stripping agent (step 5); And a method for producing a concrete stripper agent.

In step 1, 1 to 5 parts by weight of rosin oil is added to 100 parts by weight of mineral oil, and the mixture is stirred for 5 minutes.

In step 2, 10 to 20 parts by weight of oxalic oil is added to 100 parts by weight of the mineral oil, and the mixture is stirred for 5 minutes.

In step 3, the surfactant is added to the second agitated product and stirred for 15 minutes. The surfactant may be selected from the group consisting of dioctylsulfosuccinate sodium salt and polyoxyethylene oleyl ether 5 to 10 parts by weight of dioctylsulfosuccinate sodium salt and 1 to 5 parts by weight of polyoxyethylene oleyl ether per 100 parts by weight of the mineral oil.

The present invention also relates to a method for producing a concrete, which is produced by the above-mentioned method and which comprises mineral ounces, rosin oils, oxysulfuric acid, dioctylsulfosuccinate sodium salt and polyoxyethylene oleyl ether, Provide a release agent.

The concrete stripper according to the present invention is environmentally friendly, harmless to the human body, can not detect VOCs or environmental hormones at all, has excellent concrete peeling effect, has excellent reinforcing strength, and can be applied using a sprayer even when applied to a mold , It has a stronger water resistance than the oil release agent even in the case of rain, and it has a merit that it can prevent deformation of the mold, enhance the durability, and shorten the air.

Hereinafter, the present invention will be described in detail.

First, a method for producing a concrete stripper according to the present invention will be described.

The method for producing a concrete stripper of the present invention comprises:

Adding rosin oil to mineral ounces and stirring to obtain a first agitated product (step 1);

Adding oxbow oil to the first agitated product and stirring to obtain a second agitated product (step 2);

Adding a surfactant to the second agitated material and stirring to obtain a third agitated material (step 3);

Adding water to the third agitated material and stirring to obtain a fourth agitated material (step 4); And

Adding a defoaming agent to the fourth stirred material and stirring to prepare a concrete stripping agent (step 5);

.

In step 1, 1 to 5 parts by weight of rosin oil is added to 100 parts by weight of the mineral oil, and the mixture is stirred for 5 minutes. If 100 parts by weight of the mineral ounle contains less than 1 part by weight of rosin oil, there is a problem that the deodorization effect is insufficient, and even if the amount exceeds 5 parts by weight, the deodorization effect is not further increased.

In step 2, it is preferable that oxbow oil is added to the first agitated product and stirred for 5 minutes.

The corn oil refers to oil extracted from corn embryo.

It is preferable that 12 to 20 parts by weight of the mallow oil is added to 100 parts by weight of the mineral oil.

When the content of oxalic acid is less than 12 parts by weight with respect to 100 parts by weight of the mineral oil, there is a problem that bubble formation is not prevented. When the content is more than 20 parts by weight, bubble formation is prevented but the oil is badly affected.

Step 3 is preferably carried out by adding a surfactant to the second stirring and stirring for 15 minutes.

The surfactant is preferably Dioctyl Sulfosuccunate Sodium Salt and Polyoxyethylene Oleyl Ether.

5 to 10 parts by weight of dioctylsulfosuccinic acid sodium salt and 1 to 5 parts by weight of polyoxyethylene oleyl ether per 100 parts by weight of the mineral oil.

If the amount of Dioctyl Sulfosuccinate Sodium Salt is less than 5 parts by weight based on 100 parts by weight of the mineral oil, there is a problem of lowering the degree of emulsification. If the amount of Dioctyl Sulfosuccinate Sodium Salt is more than 10 parts by weight, there is a problem that the viscosity becomes too high.

If less than 1 part by weight of polyoxyethylene oleyl ether is added to 100 parts by weight of the mineral oil, there is a problem in safety of emulsification. If the amount is less than 5 parts by weight, the effect of reducing bubble formation can not be expected.

Step 4 is a step of adding water to the third stirred material and stirring for 10 minutes to obtain a fourth stirred material.

The water may be added in an amount of 30 to 60 parts by weight based on 100 parts by weight of the mineral oil.

It is preferable to add the amount corresponding to 1/5 of the total weight of water five times, since it is difficult to maintain a good emulsified state when the total amount of the water is added at a time.

Step 5 is a step of adding a defoaming agent to the fourth stirred material and stirring the mixture for 2 hours to prepare a concrete stripping agent.

The antifoaming agent is preferably added in an amount of 0.1 to 0.2 parts by weight based on 100 parts by weight of the mineral oil.

The present invention also provides a concrete stripper comprising the mineral oill, rosin oil, oxbow oil, dioctyl sulfosuccinate sodium salt and polyoxyethylene oleyl ether, to provide.

The concrete stripper according to the present invention is environmentally friendly, harmless to the human body, can not detect VOCs or environmental hormones at all, has excellent concrete peeling effect, has excellent reinforcing strength, and can be applied using a sprayer even when applied to a mold , It has a stronger water resistance than the oil release agent even in the case of rain, and it has a merit that it can prevent deformation of the mold, enhance the durability, and shorten the air.

Hereinafter, the constitution and effects of the present invention will be described in more detail through examples. These embodiments are only for illustrating the present invention, and the scope of the present invention is not limited by these embodiments.

3 parts by weight of rosin oil was added to 100 parts by weight of the mineral oil, and the mixture was stirred for 5 minutes to prepare a first stirring product. To the first agitated product was added oxagut oil and stirred for 5 minutes to prepare a second agitated product. The oxalic oil was added in an amount corresponding to 15 parts by weight based on 100 parts by weight of the mineral oil. Dioctyl Sulfosuccunate Sodium Salt and Polyoxyethylene Oleyl Ether were added to the second stirred solution and stirred for 15 minutes to prepare a third stirred solution. To 100 parts by weight of the mineral oil, 7 parts by weight of dioctylsulfosuccinate sodium salt and 3 parts by weight of polyoxyethylene oleyl ether were added. Water was added to the third agitator and stirred for 10 minutes to make a fourth agitator. The water was added in an amount corresponding to 50 parts by weight based on 100 parts by weight of the mineral oil. The water was added five times in an amount corresponding to 1/5 of the total weight of water. A defoaming agent was added to the fourth stirred material and stirred for 2 hours to prepare a concrete stripping agent. The antifoaming agent was added in an amount corresponding to 0.1 part by weight with respect to 100 parts by weight of the mineral oil.

[Experimental Example 1]

After applying the concrete release agent prepared in Example 1 to the surface of the reinforcing bars, three concrete specimens were prepared, and the drawing tests were carried out three times each. For the evaluation of the bond strength, Comparative Example 1 was used as the control group in which the concrete release agent was not applied. The results are shown in Table 1. The concrete was prepared by mixing water of 168 kg / m 3, cement of 350 kg / m 3, fine aggregate of 850 kg / m 3, and coarse aggregate of 1,043 kg / m 3.

unit
Test examination
Way Test result One 2 3 Avg. Maximum draw
Attached load
(28 days old) Example 1 kN
KS F 2441
62.7 60.0 56.4 59.7 Comparative Example 1 54.4 52.4 49.8 52.2 Nominal averages
Bond stress
(28 days old) Example 1 MPa
KS F 2441
7.02 6.48 6.22 6.57 Comparative Example 1 5.58 5.85 5.45 5.63

As shown in Table 1, Example 1 showed excellent strength of reinforcing bars.

[Comparative Example 2]

In Example 1, a concrete release agent was prepared in the same manner as in Example 1 except that no dioctylsulfosuccinate sodium salt was added.

[Comparative Example 3]

In Example 1, except that polyoxyethylene oleyl ether was not added, the same procedure as in Example 1 was repeated to prepare a concrete release agent.

[Comparative Example 4]

In Example 1, a concrete release agent was prepared in the same manner as in Example 1, except that rosin powder was used instead of rosin oil.

[Experimental Example 2]

The peeling performance and the surface condition of the concrete structure were examined by spraying the concrete release agent prepared in Example 1 and Comparative Example 2 to Comparative Example 4 on the surface of the mold, and the results are shown in Table 2. M 2, water of 168 kg / m 3, cement of 350 kg / m 3, fine aggregate of 850 kg / m 3 and coarse aggregate of 1,043 kg / m 3 were mixed to prepare a concrete. Shaped concrete block was molded to form an H-shaped bottom block, and after curing at room temperature for 48 hours, the concrete was demolded from the concrete structure (bottom block) And the surface condition of the concrete structure was examined. At this time, the molding die for forming the bottom block was made of an aluminum plate having a thickness of 3 mm. The numerical values of the peeling performance items shown in Table 2 are based on the ease of form separation when separating the molding form from the concrete structure. Five (5: very excellent, 4: excellent, 3: The number of defects and the maximum diameter in the surface condition item are separated by a part of the concrete when the form is separated from the concrete structure so that the surface of the concrete structure is separated from the surface of the concrete structure, It is the number and the maximum size.

division
Peeling performance
Surface condition Defect count Maximum diameter (mm) Example 1 5 0 0 Comparative Example 2 2 6 14 Comparative Example 3 3 5 7 Comparative Example 4 4 4 5

As shown in Table 2, the concrete stripper of Example 1 had a good peeling performance and the surface condition of the concrete structure. On the other hand, the concrete stripper of Comparative Example 2 to Comparative Example 4 had poorer concrete peeling performance and large pores And the concrete is partially peeled off in the process of removing the mold, so that a lot of grooves are formed on the surface of the concrete, so that the quality of the concrete is low and it is not suitable for use as a concrete form releasing agent.

[Comparative Example 5]

In Example 1, a concrete remover was prepared in the same manner as in Example 1, except that 0.5 part by weight of rosin oil was added instead of 3 parts by weight of rosin oil to 100 parts by weight of mineral oil.

[Comparative Example 6]

In Example 1, a concrete remover was prepared in the same manner as in Example 1, except that 6 parts by weight of rosin oil was added instead of 3 parts by weight of rosin oil to 100 parts by weight of mineral oil.

[Comparative Example 7]

In Example 1, a concrete remover was prepared in the same manner as in Example 1, except that 11 parts by weight of corn oil was added to 100 parts by weight of mineral oil instead of 15 parts by weight of corn oil.

[Comparative Example 8]

In Example 1, a concrete remover was prepared in the same manner as in Example 1, except that 21 parts by weight of mallow oil was added to 100 parts by weight of mineral oil instead of 15 parts by weight of mallow oil.

[Comparative Example 9]

Except that 4 parts by weight of dioctyl sulfosuccinate sodium salt was added instead of 7 parts by weight of dioctylsulfosuccinate sodium salt to 100 parts by weight of mineral oil in Example 1, Were prepared in the same manner.

[Comparative Example 10]

Except that 11 parts by weight of dioctyl sulfosuccinate sodium salt was added instead of 7 parts by weight of dioctylsulfosuccinate sodium salt to 100 parts by weight of mineral oil in Example 1, Were prepared in the same manner.

[Comparative Example 11]

Except that 3 parts by weight of polyoxyethylene oleyl ether was added to 100 parts by weight of mineral oil in Example 1 and 0.5 part by weight of polyoxyethylene oleyl ether was added, To prepare a concrete release agent.

[Comparative Example 12]

Except that 6 parts by weight of polyoxyethylene oleyl ether was added instead of 3 parts by weight of polyoxyethylene oleyl ether to 100 parts by weight of mineral oil in Example 1, To prepare a concrete release agent.

[Experimental Example 3]

The concrete exfoliation agent prepared in Example 1 and Comparative Examples 5 to 12 was peeled by the following test method, and the results are shown in Table 3 below. The specimen molding frame was KSL 5105 (Hydraulic Cement Mortar Compressive Strength Test Method) 2.4. Each of the release agents prepared in Examples and Comparative Examples was spread evenly on the wall surface of each of the molds. Then, the ordinary Portland cement specified in KSL 5201 (Portland cement) and the sand and water specified in KSL 5001 2.45: 0.48, put into a mold, molded into a specimen according to KSL 5105 Clause 9, and cured for 48 hours at room temperature and normal temperature.

Test Items Example 1 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 concrete
Peeling state ◎ × ◎  ○  ○ × △ × △ concrete
Surface condition ◎ × ◎  ○  ○ × △ × △ concrete
Form state ◎ × ◎  ○  ○ × △ × △ Concrete primary color
Maintenance state ◎ ○ ○  ○  ○ × △ × △ Oil bubble
condition ◎ ○ △ × ◎ △ ○ △ ○ Air bubble
condition ◎ ○ △ × ◎ △ ○ △ ○ ?: Very excellent,?: Excellent,?: Fair, poor: poor

According to Table 3, it can be seen that the concrete release agent of Example 1 is excellent in all of the peeling state, surface state, foam state, primary color maintenance state, oil bubble state and air bubble state of concrete.

However, the concrete release agents of Comparative Examples 5, 9, and 11 showed poor concrete detachment state, surface state, and foam state, and Comparative Example 7 showed no bubble state.

Claims (5)

Adding rosin oil to mineral ounces and stirring to obtain a first agitated product (step 1);
Adding oxbow oil to the first agitated product and stirring to obtain a second agitated product (step 2);
Adding a surfactant to the second agitated material and stirring to obtain a third agitated material (step 3);
Adding water to the third agitated material and stirring to obtain a fourth agitated material (step 4); And
Adding a defoaming agent to the fourth stirred material and stirring to prepare a concrete stripping agent (step 5);
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A method for producing a concrete stripper agent.
The method according to claim 1,
In the step 1, 1 to 5 parts by weight of rosin oil is added to 100 parts by weight of mineral oil, and the mixture is stirred for 5 minutes.
A method for producing a concrete stripper agent.
3. The method of claim 2,
Step 2 is a step of adding oxbow oil to the first stirring and stirring for 5 minutes,
Wherein the mallow oil is added in an amount of 12 to 20 parts by weight based on 100 parts by weight of the mineral oil.
A method for producing a concrete stripper agent.
The method of claim 3,
Step 3 is a step of adding a surfactant to the second stirring and stirring for 15 minutes,
The surfactant may be selected from the group consisting of Dioctyl Sulfosuccunate Sodium Salt and Polyoxyethylene Oleyl Ether,
5 to 10 parts by weight of dioctylsulfosuccinate sodium salt and 1 to 5 parts by weight of polyoxyethylene oleyl ether per 100 parts by weight of the mineral oil.
A method for producing a concrete stripper agent.
5. A process for producing a polyoxyethylene oleyl ether according to any one of claims 1 to 4, wherein the mineral oily, rosin oil, oxyi oil, dioctyl sulfosuccinate sodium salt and polyoxyethylene oleyl ether Wherein the concrete stripper is a concrete stripper.