KR102390753B1 - Acrylic-based inserting agent manufacturing method and waterproofing method using thereof - Google Patents

Abstract

The present invention relates a manufacturing method of an acrylic injection material for waterproofing construction, which comprises the steps of: preparing 100 parts by weight of a cement mixture by mixing early strength cement and magnesia cement in a volume ratio of 2 : 1; and adding and mixing, to 100 parts by weight of the cement mixture, 70 to 90 parts by weight of acrylamide, 60 to 80 parts by weight of silica sand, 50 to 70 parts by weight of tetrahydrofuran, 40 to 60 parts by weight of 1,4-dioxane, 30 to 50 parts by weight of acrylonitrile, 20 to 40 parts by weight of methacrylonitrile, 10 to 30 parts by weight of methyl magnesium iodide, 10 to 30 parts by weight of polyethylene terephthalate, and 10 to 30 parts by weight of naphthalene-1,5-diisocyanate based on 100 parts by weight of the cement mixture.

Description

Acrylic-based inserting agent manufacturing method and waterproofing method using thereof

The present invention relates to a method for manufacturing acryl crab injection material for waterproofing construction and a waterproofing method using the same, and more particularly, to a cement mixture in which crude steel cement and magnesia cement are mixed, acrylamide, silica sand, tetrahydrofuran, 1,4-dioxane, Acrylonitrile, methacrylonitrile, methylmagnesium iodide, polyethylene terephthalate and naphthalene-1,5-diisocyanate are mixed to prepare an acrylic injection material, and using this, tensile strength, elongation, penetration and absorption ratio are improved. It relates to a method for manufacturing an acrylic injection material for water-repellent construction that can be made possible, and a water-repellent method using the same.

In general, in civil engineering and building construction, a construction method of injecting a chemical solution into the ground for the purpose of watering the ground, joints of concrete structures, and cracks in order to prevent the inflow or outflow of groundwater is performed.

Chemicals used in the conventional ground injection construction mainly consist of polymerizable organic substances such as phenol resin, epoxy, acrylamide, and urethane, and inorganic substances such as cement milk and sodium silicate.

In particular, the acrylamide-based chemical solution most used as a polymerizable organic material is a mixture of acrylamide aqueous solution, a polymerization initiator and a crosslinking agent, which is a monomer, and is injected into the ground to induce a polymerization reaction. It is to perform a water blocking function, and despite the ease of drug injection and the excellent physical properties of the resulting hydrogel, the problem of causing environmental pollution due to the toxicity of the unreacted acrylamide monomer is raised, and the use thereof is limited. .

Accordingly, instead of the acrylamide-based chemical solution, an acrylate-based ground injection material containing an acrylate-based monomer as a main component has been disclosed, but it did not exhibit the same physical properties as the acrylamide-based chemical solution. In order to exhibit all the phosphorus effect, there is a demand for still using the acrylamide monomer under polymerization conditions in which unreacted acrylamide-based monomers do not remain.

On the other hand, the sodium silicate-based chemical solution, which is most often used as an inorganic material, has the advantage of being able to reduce the construction cost due to its low cost compared to the polymerizable organic chemical solution, but has the disadvantage of poor durability. there was a demand

Accordingly, a colloidal sol injection material in which a sodium silicate-based chemical is modified to include an active reactant of an aqueous alkaline earth metal salt solution has been disclosed. In the injection construction, there was a disadvantage in that a large amount of other ingredients such as cement or quick-setting agent had to be used.

Therefore, it is an object of the present invention to add acrylamide, silica sand, tetrahydrofuran, 1,4-dioxane, acrylonitrile, methacrylonitrile, methylmagnesium iodide, polyethylene terephthalate to a cement mixture in which crude steel cement and magnesia cement are mixed. and naphthalene-1,5-diisocyanate to prepare an acrylic injection material, and by using it, a method for manufacturing an acrylic injection material for waterproofing construction and a waterproofing method using the same will provide

On the other hand, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, crude steel cement and magnesia cement are mixed in a volume ratio of 2:1 to prepare 100 parts by weight of a cement mixture; 70 to 90 parts by weight of acrylamide, 60 to 80 parts by weight of silica sand, 50 to 70 parts by weight of tetrahydrofuran, 40 to 60 parts by weight of 1,4-dioxane, respectively, based on 100 parts by weight of the cement mixture to 100 parts by weight of the cement mixture , 30 to 50 parts by weight of acrylonitrile, 20 to 40 parts by weight of methacrylonitrile, 10 to 30 parts by weight of methylmagnesium iodide, 10 to 30 parts by weight of polyethylene terephthalate, and 10 to naphthalene-1,5-diisocyanate There is provided a method for manufacturing an acrylic injection material for waterproofing construction, comprising the step of adding and mixing 30 parts by weight.

In addition, according to the present invention, the step of manufacturing the acrylic injection material for waterproofing construction; A waterproofing method using an acrylic injection material for waterproofing construction is provided, comprising the step of mixing the acrylic injection material with water in a ratio of 1:0.5 to 1 and then injecting it into the back side of the structure or the cracked area through an injection pump and a spraying means. .

According to the present invention, acrylamide, silica sand, tetrahydrofuran, 1,4-dioxane, acrylonitrile, methacrylonitrile, methylmagnesium iodide, polyethylene terephthalate and An acrylic injection material is prepared by mixing naphthalene-1,5-diisocyanate, and by using it, it is possible to enable an improved order of tensile strength, elongation, penetration, and absorption ratio.

On the other hand, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The acrylic injection material for waterproofing construction according to a preferred embodiment of the present invention is a cement mixture in which crude steel cement and magnesia cement are mixed in a volume ratio of 2:1, acrylamide, silica sand, tetrahydrofuran, 1,4-dioxane, acrylonitrile , methacrylonitrile, methylmagnesium iodide, polyethylene terephthalate and naphthalene-1,5-diisocyanate are added and mixed.

More preferably, the acrylic injection material for waterproofing construction of the present invention includes 100 parts by weight of a cement mixture in which crude steel cement and magnesia cement are mixed in a volume ratio of 2:1, 70 to 90 parts by weight of acrylamide, 60 to 80 parts by weight of silica sand , tetrahydrofuran 50 to 70 parts by weight, 1,4-dioxane 40 to 60 parts by weight, acrylonitrile 30 to 50 parts by weight, methacrylonitrile 20 to 40 parts by weight, methylmagnesium iodide 10 to 30 parts by weight , 10 to 30 parts by weight of polyethylene terephthalate and 10 to 30 parts by weight of naphthalene-1,5-diisocyanate are added and mixed.

On the other hand, the method for producing an acrylic injection material for waterproofing construction according to a preferred embodiment of the present invention comprises the steps of preparing 100 parts by weight of a cement mixture by mixing crude steel cement and magnesia cement in a volume ratio of 2: 1, and 100 parts by weight of the cement mixture. Based on 100 parts by weight of the cement mixture, each 70 to 90 parts by weight of acrylamide, 60 to 80 parts by weight of silica sand, 50 to 70 parts by weight of tetrahydrofuran, 40 to 60 parts by weight of 1,4-dioxane, 30 to 50 parts by weight of acrylonitrile Parts by weight, 20-40 parts by weight of methacrylonitrile, 10-30 parts by weight of methylmagnesium iodide, 10-30 parts by weight of polyethylene terephthalate, and 10-30 parts by weight of naphthalene-1,5-diisocyanate are added and mixed includes steps.

Crude cement is a means of providing physical properties that provides the fastest curing speed and high tensile strength when mixed with water among Portland cements, and can enable early strength to be expressed during construction for order.

Magnesia cement is a cement made by mixing magnesium oxide with a magnesium chloride solution as a curing agent for forming a gel by hydration reaction when mixed with water, securing physical properties such as strength, penetrating into pores, and providing separation resistance.

Here, in the cement mixture, crude steel cement and magnesia cement are mixed in a volume ratio of 2:1. When crude steel cement is less than a volume ratio of 1, the physical performance of the block by injection during order or grouting is insufficient and the curing time is too long. If the crude steel cement exceeds the volume ratio of 2, hardening occurs while mixing with water, making injection or spraying impossible. When the strength of the grouting block is lowered and the magnesia cement exceeds a volume ratio of 1, there is a problem in that the stirrability of the additive compositions is lowered. Therefore, it is preferable to have the limited volume ratio as described above.

In addition, the cement mixture in which crude steel cement and magnesia cement are mixed has 100 parts by weight with respect to the added compositions. When less than 100 parts by weight is added, physical performance is insufficient, and when more than 100 parts by weight is added, water and Since there is a problem that hardening occurs during mixing and workability for transport, injection, or application is greatly reduced, it is preferable to have a limited volume ratio as described above.

Acrylamide is for improving the adhesive strength between the injection material and the structure, and is a resinous, fibrous, and elastic material belonging to the organic polymer series.

Here, 70 to 90 parts by weight of acrylamide is added based on 100 parts by weight of the cement mixture. When less than 70 parts by weight is added, water repellency is reduced, and when added more than 90 parts by weight, adhesive strength and compressive strength are lowered. Therefore, it is preferable to have the limited parts by weight as described above.

Silica sand is for providing a solid content to the water-repellent layer during water-repellent construction, and it is preferable that it is a well-known silica sand.

Here, 60 to 80 parts by weight of silica sand are added based on 100 parts by weight of the cement mixture. When less than 60 parts by weight is added, the total solid content is low, so it is difficult to secure the thickness during construction of the water-order layer, and when more than 80 parts by weight is added Since there is a problem in that the overall viscosity increases when mixed with water and the physical properties are rather deteriorated, it is preferable to have the limited parts by weight as described above.

Tetrahydrofuran is a material that reacts with the additive compositions to form a water-order layer, and 50 to 70 parts by weight are mixed with respect to 100 parts by weight of the cement mixture. When added in more than parts, the viscosity becomes too large, and there is a problem in that permeability or injectability is lowered.

1,4-dioxane is a binding material for reacting with the additive compositions to provide a predetermined viscosity, and 40 to 60 parts by weight are mixed with respect to 100 parts by weight of the cement mixture. When less than 40 parts by weight is added, the injection material is Since the overall viscosity becomes too large, the permeability decreases, and when more than 60 parts by weight is added, the overall viscosity of the injection material becomes too small, so that the effect during construction for the purpose of grouting is greatly reduced. desirable.

Acrylonitrile is a resin composition that provides improved impact resistance strength of the water-order layer and provides heat resistance, moisture resistance and mechanical properties. Based on 100 parts by weight of the cement mixture, 30-50 parts by weight is added, but less than 30 parts by weight is added. When more than 50 parts by weight is added, the viscosity is high, so the agitability is lowered, and the adhesive force is lowered by hardening rather than the concrete surface. It is preferred to have limited parts by weight.

Methacrylonitrile is a composition that provides durability, heat resistance, chemical resistance, abrasion resistance and weather resistance and corrosion inhibition function, and penetrates into the surface of concrete to improve adhesion strength and toughness. Based on 100 parts by weight of the cement mixture, 20 to Although 40 parts by weight is added, when less than 20 parts by weight is added, the adhesion strength is lowered, and when more than 40 parts by weight is added, there is a problem that the viscosity is increased to decrease the permeability and the adhesion strength. desirable.

Methylmagnesium iodide is to improve the compatibility and stirrability when the additive composition is mixed, and 10 to 30 parts by weight is added based on 100 parts by weight of the cement mixture. When less than 10 parts by weight is added, the compatibility of the compositions decreases As a result, the water permeability is lowered due to the bias of calcium carbonate, and when more than 30 parts by weight is added, the compatibility of the additive compositions is maximized and the miscibility is rather deteriorated. Therefore, it is preferable to have the limited parts by weight as described above.

Polyethylene terephthalate provides functions such as durability and scratch resistance of the water-repellent layer by making the grouting block or water-repellent layer by the injection material have a predetermined hardness, and 10 to 30 parts by weight is added with respect to 100 parts by weight of the cement mixture. However, if less than 10 parts by weight is added, the hardness of the order layer becomes too weak and the order block or grouting block is fractured by impact. Since there is a problem that the adhesion strength is reduced, it is preferable to have a limited weight part as described above.

Naphthalene-1,5-diisocyanate is a material that provides a function to allow the injection material to be smoothly sprayed or injected by an injection device or injection device during waterproof construction, and 10 to 30 parts by weight based on 100 parts by weight of the cement mixture It is added, but when it is less than 10 parts by weight, the adhesive strength is increased in the cracked area, so that injection or penetration workability is lowered, and when it exceeds 30 parts by weight, the adhesive strength is lowered in the cracked area and the problem is that it flows down after injection or penetration. Therefore, it is good to have a limited weight part as described above.

Hereinafter, the effect of the acrylic injection material for waterproofing construction according to a preferred embodiment of the present invention will be described through specific examples.

After crude steel cement and magnesia cement are mixed in a volume ratio of 1:1 to prepare 100 parts by weight of a cement mixture, 65 parts by weight of acrylamide, 55 parts by weight of silica sand, 45 parts by weight of tetrahydrofuran, 1, 35 parts by weight of 4-dioxane, 25 parts by weight of acrylonitrile, 15 parts by weight of methacrylonitrile, 5 parts by weight of methylmagnesium iodide, 5 parts by weight of polyethylene terephthalate and 5 parts by weight of naphthalene-1,5-diisocyanate are added. and mixed to prepare an acrylic injection material for waterproofing construction.

After crude steel cement and magnesia cement are mixed in a volume ratio of 2:1 to prepare 100 parts by weight of a cement mixture, 80 parts by weight of acrylamide, 70 parts by weight of silica sand, 60 parts by weight of tetrahydrofuran, 1, 50 parts by weight of 4-dioxane, 40 parts by weight of acrylonitrile, 30 parts by weight of methacrylonitrile, 20 parts by weight of methylmagnesium iodide, 20 parts by weight of polyethylene terephthalate and 20 parts by weight of naphthalene-1,5-diisocyanate are added. and mixed to prepare an acrylic injection material for waterproofing construction.

After crude steel cement and magnesia cement are mixed in a volume ratio of 2:1.5 to prepare 100 parts by weight of a cement mixture, 95 parts by weight of acrylamide, 85 parts by weight of silica sand, 75 parts by weight of tetrahydrofuran, 1, 65 parts by weight of 4-dioxane, 55 parts by weight of acrylonitrile, 45 parts by weight of methacrylonitrile, 35 parts by weight of methylmagnesium iodide, 35 parts by weight of polyethylene terephthalate and 35 parts by weight of naphthalene-1,5-diisocyanate are added and mixed to prepare an acrylic injection material for waterproofing construction.

Here, the above examples are for evaluating the waterproof performance of the acrylic injection material according to the present invention, and the acrylic injection material and water are mixed in a ratio of 1: 0.5 to 1, and then injected or sprayed into the cracked area to form a gel. After carrying out the compressive strength, tensile strength, absorption test, gelation time, and pot life, etc. of the grouting block or water barrier layer, it was compared with the prototype 'Central Waterproofing Company' product and the measurement results are shown in Table 1 below. It is shown by comparison.

Therefore, as shown in Table 1 above, the acrylic injection material for waterproofing construction according to a preferred embodiment of the present invention has the adhesion strength and compressive strength of Examples 1, 2 and 3 compared to general commercial products. It can be seen that the water absorption has been improved and the absorption amount is reduced compared to general commercial products, which means that there is no possibility of the water-repellent layer peeling off even after construction, even under static and dynamic loads, which in turn means a significant improvement in water-repellent performance. can do.

In addition, in the basement of a building or other civil structures, moisture can penetrate or water can be blocked by coating on the surface of the concrete affected by water pressure. This is because the waterproof performance such as impact resistance, absorbency and water permeability is improved.

In addition, the acrylic injection material for waterproofing construction according to the present invention shortens the curing time of the waterproofing layer or grouting block, so the time that the parent body must endure until sufficient penetration of the penetrating component in the existing waterproofing layer is shortened. This can be secured to compensate for the impermeability of penetrating components after the formation of a waterproofing layer due to the impermeability of some acrylic emulsion-added products.

On the other hand, the construction method using the acrylic injection material for waterproofing construction according to a preferred embodiment of the present invention is as follows.

First, the surface of the concrete for the construction of the acrylic injection material manufactured as described above by the operator is cleaned and treated.

Here, the cleaning of the concrete surface includes removing dust, contaminants, or oil adhering to the concrete surface and smoothing the protrusion of the surface to be constructed.

Thereafter, the acrylic injection material prepared as described above is mixed with water in a ratio of 1: 0.5 to 1, and then is injected into the back side of the structure or cracks through an injection pump and a spraying means to construct a grouting block or a waterproofing layer.

Therefore, according to the present invention, acrylamide, silica sand, tetrahydrofuran, 1,4-dioxane, acrylonitrile, methacrylonitrile, methylmagnesium iodide, polyethylene terephthalate is added to a cement mixture in which crude steel cement and magnesia cement are mixed. and naphthalene-1,5-diisocyanate to prepare an acryl-based injection material, and by using this, it is possible to enable an order in which tensile strength, elongation, penetration, and absorption ratio are improved.

Although preferred embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains may substitute variously within the scope without departing from the technical spirit or essential characteristics of the present invention. and variations are possible, so it will be understood that the embodiments may be implemented in other specific forms. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (2)

preparing 100 parts by weight of a cement mixture by mixing crude steel cement and magnesia cement in a volume ratio of 2:1;
70 to 90 parts by weight of acrylamide, 60 to 80 parts by weight of silica sand, 50 to 70 parts by weight of tetrahydrofuran, 40 to 60 parts by weight of 1,4-dioxane, respectively, based on 100 parts by weight of the cement mixture to 100 parts by weight of the cement mixture , 30 to 50 parts by weight of acrylonitrile, 20 to 40 parts by weight of methacrylonitrile, 10 to 30 parts by weight of methylmagnesium iodide, 10 to 30 parts by weight of polyethylene terephthalate, and 10 to naphthalene-1,5-diisocyanate A method of manufacturing an acrylic injection material for waterproofing construction, comprising the step of adding and mixing 30 parts by weight. According to claim 1, comprising the steps of manufacturing an acrylic injection material for waterproofing;
After the acrylic injection material is mixed with water in a ratio of 1: 0.5 to 1, it is injected into the back surface of the structure or cracks through an injection pump and a spraying means. Method.