KR101725764B1 - Water repellency protection mortar for surface preparation and construction method using that - Google Patents

Abstract

The present invention relates to a waterproof protection mortar composition for surface preparation and a method for constructing waterproof/anticorrosive/protective coating materials using the same. The waterproof protection mortar composition comprises: an A part consisting of 40-45 wt% or cement, 5-10 wt% of slag, 42-50 wt% of silica, 0.01-1 wt% of silica aerosol, 0.01-1 wt% of methylcellulose, and 0.5-1 wt% of silicone waterproof powder; and a B part containing a water-soluble epoxy resin. The mixing ratio of the A part to the B part is 10:2-3.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective mortar composition for waterproofing a substrate and a waterproofing method, a protective coating material using the same,

The present invention relates to a protective mortar composition for waterproofing a substrate and a waterproofing method, a protective coating material using the mortar composition, and more particularly, to a protective mortar for inorganic waterproofing, , A protective mortar composition for waterproofing a substrate, which can reduce the amount of air required for constructing a protective material by improving the adhesion of the protective material, the air permeability, the moisture content, the workability and the durability, and a waterproofing method and a protective coating material using the same .

Generally, waterproofing is required thoroughly in areas where direct contact with water such as a roof of a building, an outdoor parking lot, a swimming pool, or a building floor is made.

In the conventional waterproof structure, a mortar layer having a thickness of 20 - 24 mm is prepared by mixing cement and sand at a ratio of 1: 3 for the purpose of adjusting the background on the upper surface of a concrete slab layer. After curing and curing, A waterproof structure is formed in which rubber asphalt is formed, a reinforcing material layer is selectively inserted therebetween, and then a protective mortar layer is put in a poured state.

However, in the conventional waterproof structure having such a constitution, the pore mortar layer, which is a separate background adjusting process, is placed on the concrete slab laying surface by mixing cement, sand and water with a thickness of 20 - 24 mm.

The rubber asphalt coating film waterproofing method is combined with amorphous material due to the nature of the material, and waterproof quality is greatly dependent on the condition of the base surface during the field construction.

The waterproof layer of the coating film causes many hazards such as thickness irregularities, pinholes, adhesive failure, peeling, peeling, and leakage, depending on the unevenness of the surface of the concrete slab, pores, microcracks and moisture content.

Therefore, the conventional waterproof structure is poor in adhesiveness to the mother slab surface due to the mixing ratio with the concrete slab and the difference in strength when the mortar layer is formed on the basis of the base adjustment and the surface treatment, and the fixing load due to the pore mortar thickness (20 - 24 mm) There is a problem of an increase in the building load.

Since the proper water cement ratio must be secured during the pour mortar construction, the days required for curing by evaporation of surplus water after construction are prolonged, and when the temperature is lowered, there is a problem of surface strength deterioration due to freezing and thawing and poor strength development.

In addition, the waterproof layer of the film has a great influence on the waterproof durability according to the state change of the substrate surface, and the pore mortar layer is liable to cause microcracks due to drying and shrinking phenomenon during the curing management.

In this case, there is a high risk of fracture of the waterproof layer if the tear strength and tensile performance due to an increase in fatigue are lowered in the coating waterproof layer.

There is a problem of promoting short-term deterioration of the waterproof layer due to occurrence of air pockets, peeling, and lifting after the formation of the waterproof layer and leakage of water.

In order to solve the above problems, a composite waterproof structure using a background adjustment and reinforcement system has been developed. In the waterproof structure according to the related art, a water-soluble primer layer based on acrylic resin is formed on the upper surface of a concrete slab layer, After the base adjusting layer of the composite is formed, a polyester nonwoven fabric layer of a synthetic fiber system is bonded in an uncured state, and then a waterproofing layer of a rubber asphalt-based method or a cold-weathering method is formed on the upper surface thereof. A system of a desk adjustment and strengthening layer composed of an acrylic resin-based primer layer on the upper surface of a concrete slab layer, a desk adjustment and reinforcing layer of a thin film type pulimmer composite on the upper surface of the primer layer, and a polyester non- Structure, a protective mortar in a rubber asphalt-based waterproof layer of a thermal process or a cold process It includes.

Background Art [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-1999-0018246 (published on Dec. 15, 2000, entitled " Combined waterproof structure using desktop adjustment and reinforcement system and method of construction thereof).

The composite waterproofing structure according to the related art has a problem in that bubbles are generated much at the time of constructing the base adjusting material because the organic base adjusting material is applied and water is infiltrated into bubble holes generated after the construction of the base adjusting material, In the case of general resin mortar, a large amount of bubbles are generated and water penetrates into the generated bubble hole, which causes the cause of winter frost Which causes a defect that the desk adjusting material is dropped. These problems cause the durability of the desk adjusting material after the whole construction to be lowered, which results in a loss due to a decrease in durability of the facilities.

Therefore, there is a need for improvement.

The present invention provides a protective mortar for inorganic waterproofing, which reduces the occurrence of surface bubbles due to the pressure of the structure after construction and shortens the air by improving the adhesion force, air permeability, moisture content, workability and durability of the protective material, The present invention provides a protective mortar composition for waterproofing a substrate and a method of constructing a waterproofing, a method, and a protective coating using the same.

The present invention relates to a method for producing a silicone oil composition comprising 40 to 45 wt% of cement, 5 to 10 wt% of slag, 42 to 50 wt% of silica, 0.01 to 1 wt% of silica aerosol, 0.01 to 1 wt% of methylcellulose and 0.5 to 1 wt% Part A containing; And a B portion comprising a water-soluble epoxy resin, wherein the A portion and the B portion are mixed in a ratio of 10: 2 to 3.

Also, the water-soluble epoxy resin of the present invention comprises a resin comprising 15 to 25% by weight of a resin solid content and 75 to 85% by weight of water; And a curing agent comprising 15 to 25% by weight of an amine solid and 75 to 85% by weight of water, wherein the subject and the curing agent are mixed in a ratio of 1: 0.5 to 1.5.

The present invention also provides a method of manufacturing a semiconductor device, comprising: (a) a surface cleaning step of removing foreign matter remaining on a surface of a structure; (b) from 40 to 45% by weight of cement, from 5 to 10% by weight of slag, from 42 to 50% by weight of silica, from 0.01 to 1% by weight of aerosol, from 0.01 to 1% by weight of methylcellulose and from 0.5 to 1% Part A; And a water-soluble epoxy resin, wherein the part A and the part B are mixed in a ratio of 10: 2 to 3; applying a waterproof protective mortar composition for desktop adjustment to the surface of the structure; (c) applying the waterproof primer for urea to the protective mortar; And (d) applying waterproofing polyurea to the protective mortar and the waterproof primer for urea.

The protective mortar composition for waterproofing background adjustment according to the present invention and the waterproofing method, protective coating material using the mortar composition are prepared by using protective mortar for inorganic waterproofing and adjusting the background, The adhesion of the background adjusting material is improved, and the partial bubble phenomenon is also reduced after the background adjusting material is applied.

Also, the protective mortar composition for waterproofing background adjustment according to the present invention and the waterproofing method, protective coating material using the mortar composition are advantageous in improving the breathability, water content, workability and durability of the background adjusting material.

FIG. 1 is a flowchart showing a method of constructing a waterproof, method, and protective coating material using a protective mortar composition for waterproofing background adjustment according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a protective mortar composition for waterproofing a substrate according to the present invention will be described with reference to the accompanying drawings, and a method of constructing a waterproofing, method, and protective coating material using the same.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a flowchart showing a method of constructing a waterproof, method, and protective coating material using a protective mortar composition for waterproofing background adjustment according to an embodiment of the present invention.

1, the protective mortar composition for waterproofing of the present invention comprises 40 to 45% by weight of cement, 5 to 10% by weight of slag, 42 to 50% by weight of silica, 0.01 to 1% by weight of silica aerosol, 0.01 to 1% by weight of methyl cellulose, and 0.5 to 1% by weight of silicone waterproof powder, and part B comprising a water-soluble epoxy resin.

Here, slag means that solvents or non-metallic materials, metal oxides and the like are left on the tiles when they are melted in slag, blast furnace, cupola, etc., or as scrap.

Silica is also known as silicon dioxide or silicic anhydride. It is produced from quartz, quartz, agate and opal in nature. It is also used as glass raw material in quartz sand and stone, also called silica sand and silica. Water is ionic and colloidal .

Methylcellulose is a methylcellulose of cellulose. When dried, this material contains 26.0 to 33.0% of a methoxyl group (-OCH3: 31.03) and is used as a binder, an emulsion stabilizer, an aqueous viscosity increasing agent or a flavoring agent Is used.

Silicone waterproofing powders are made with 0.1-0.15 micron grain size to make silicon fine powder and improve the waterproof function of protective mortar.

Silica aerosol is a material made of silica-based solid 100 a (系) dispersing droplets of a solid or a liquid even in a more heated to a high temperature gas or aerosol (煙霧質) state, silica aerosol embodiment of the present embodiment is 10 ^-6 to It has a colloid-sized diameter of about 10 ^-3 mm.

When the composition ratio of B portion is less than 10: 2, there is a problem that the coefficient of linear thermal expansion becomes small, and the composition ratio of B portion Is more than 10: 3, the compression strength and the bending strength become weak.

The water-soluble epoxy resin of this embodiment contains a curing agent comprising 15 to 25% by weight of resin solid and 75 to 85% by weight of water, 15 to 25% by weight of amine solid and 75 to 85% by weight of water , And the mixture of the base and the curing agent is mixed at a ratio of 1: 0.5 to 1.5.

An amine is an aliphatic amine when all the hydrocarbon groups are alkyl groups and an aromatic amine when at least one of the hydrocarbon groups is an aryl group. Typical examples are aniline.

A waterproofing method, a protective coating material, and a waterproofing mortar composition according to an embodiment of the present invention will be described below.

A method for constructing a waterproof, method, and protective coating material using a protective mortar composition for waterproof property adjustment according to an embodiment of the present invention includes: a surface preparation step (S10) of removing foreign matters remaining on a surface of a structure; , Part A containing 5 to 10% by weight of slag, 42 to 50% by weight of silica, 0.01 to 1% by weight of aerosol, 0.01 to 1% by weight of methylcellulose and 0.5 to 1% by weight of silicone waterproof powder and a water-soluble epoxy resin (S20) of applying a waterproof protective mortar composition for surface adjustment to the surface of the structure (B), wherein the waterproof primer for urea is mixed with the waterproof primer for urea Applying S30, and applying a waterproofing polyurea to the waterproof primer for protective mortar and urea (S40).

In the case of the newly constructed structure, the surface roughing step is performed by removing the laitance formed on the surface of the structure and repairing the existing structure by removing the deteriorated structure on the surface of the structure.

Here, latency refers to a thin film of white light formed on the surface after concrete is hardened due to the floating of internal fine particles caused by bleeding phenomenon (phenomenon of rising water) after the concrete is applied, and most of the components are cement It is a fine particle, but it is characterized by poor adhesion and poor watertightness.

Therefore, in the case of a newly constructed structure, the surface preparation step is performed by removing the latency.

The protective mortar according to the present embodiment is coated on the surface of the surface finished with surface finishing by a waterproof plaster application method and cured, and then applied as a glue to a new and adhered urea primer having a waterproof function.

Finally, the polyurea having the waterproof function and the method function is applied by using the dedicated equipment, thereby completing the construction of the background adjustment material of the concrete structure.

≪ Example 1 >

Removing the remaining foreign matter on the surface of the concrete structure and removing part A containing 45 wt% of cement, 10 wt% of slag, 42 wt% of silica, 1 wt% of aerosol, 1 wt% of methylcellulose and 1 wt% And a water-soluble epoxy resin; and part A and part B are mixed at a ratio of 10: 2. The waterproof protective mortar composition for surface adjustment is applied to the surface of the structure.

Thereafter, a waterproof primer for urea is applied to the protective mortar and a waterproof polyurea is applied to form a waterproof layer.

≪ Example 2 >

Removing the remaining foreign matter on the surface of the concrete structure and removing part A containing 45 wt% of cement, 10 wt% of slag, 42 wt% of silica, 1 wt% of aerosol, 1 wt% of methylcellulose and 1 wt% And part B comprising a water-soluble epoxy resin, and part A and part B are mixed at a ratio of 10: 2.5, to the surface of the structure.

Thereafter, a waterproof primer for urea is applied to the protective mortar and a waterproof polyurea is applied to form a waterproof layer.

≪ Example 3 >

Removing the remaining foreign matter on the surface of the concrete structure and removing part A containing 45 wt% of cement, 10 wt% of slag, 42 wt% of silica, 1 wt% of aerosol, 1 wt% of methylcellulose and 1 wt% And a water-soluble epoxy resin; and part A and part B are mixed at a ratio of 10: 3, and a waterproof protective mortar composition for surface adjustment is applied to the surface of the structure.

Thereafter, a waterproof primer for urea is applied to the protective mortar and a waterproof polyurea is applied to form a waterproof layer.

≪ Comparative Example 1 &

Removing the remaining foreign matter on the surface of the concrete structure and removing part A containing 45 wt% of cement, 10 wt% of slag, 42 wt% of silica, 1 wt% of aerosol, 1 wt% of methylcellulose and 1 wt% And a water-soluble epoxy resin; and part A and part B are mixed at a ratio of 10: 1.5, and a waterproof protective mortar composition for surface adjustment is applied to the surface of the structure.

Thereafter, a waterproof primer for urea is applied to the protective mortar and a waterproof polyurea is applied to form a waterproof layer.

≪ Comparative Example 2 &

Removing the remaining foreign matter on the surface of the concrete structure and removing part A containing 45 wt% of cement, 10 wt% of slag, 42 wt% of silica, 1 wt% of aerosol, 1 wt% of methylcellulose and 1 wt% And a water-soluble epoxy resin; and part A and part B are mixed at a ratio of 10: 3.5.

Thereafter, a waterproof primer for urea is applied to the protective mortar and a waterproof polyurea is applied to form a waterproof layer.

Compressive strength
(3 hours)
(N / mm ² ) Flexural strength
(1 day)
(N / mm ² ) Compressive strength
(1 day)
(N / mm ² ) Coefficient of linear thermal expansion
(1 / C) Example 1 26.7 11.9 33.5 3.8 * 10 ^-5 Example 2 26.3 11.8 33.6 4.0 * 10 ^-5 Example 3 25.9 11.0 32.9 4.1 * 10 ^-5 Comparative Example 1 26.7 12.0 33.7 2.7 * 10 ^-5 Comparative Example 2 17.4 8.9 21.0 4.2 * 10 ^-5

As described above, the composition ratio between the A part and the B part was varied and the examples and comparative examples were compared. The test methods were KS F 4043: 2008 and KS F 3230: 2013 And then tested in Examples 1 to 3 and Comparative Examples 1 and 2.

As shown in Table 1, when the composition ratio of the part B is lower than 10: 2, the linear thermal expansion coefficient becomes small. When the composition ratio of the part B exceeds 10: 3, the compressive strength and the bending strength A problem of degradation occurs.

Therefore, it is preferable to maintain the composition ratio of A portion and B portion at 10: 2 ~ 3.

By this, it is possible to reduce the occurrence of surface bubbles due to the pressure of the structure after the construction by providing protective mortar for adjusting the inorganic waterproofing substrate and shorten the air by improving the adhesion force, permeability, water content, workability and durability of the protective material, And a method of constructing a waterproof, method, and protective coating material using the protective mortar composition.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the protective mortar composition for adjusting the waterproof property and the waterproofing, the method, and the protective coating material using the waterproofing composition have been described as an example, the protective mortar composition for waterproofing the ground and the waterproofing, The protective mortar composition of the present invention and the method of applying the waterproofing, the method, and the protective coating material may be used.

Accordingly, the true scope of the present invention should be determined by the following claims.

Claims (3)

A part comprising 40 to 45 wt% of cement, 5 to 10 wt% of slag, 42 to 50 wt% of silica, 0.01 to 1 wt% of silica aerosol, 0.01 to 1 wt% of methyl cellulose and 0.5 to 1 wt% of silicone waterproof powder ; And
And a B portion comprising a water-soluble epoxy resin,
The part (A) and the part (B)
10: 2 to 3 by weight,
The water-soluble epoxy resin,
15 to 25% by weight of a water-soluble epoxy resin solids, and 75 to 85% by weight of water; And
An amine solid content of 15 to 25% by weight, and water of 75 to 85% by weight,
Wherein the base and the curing agent are mixed in a weight ratio of 1: 0.5 to 1.5. delete (a) a surface cleaning step of removing foreign matter remaining on the surface of the structure;
(b) from 40 to 45% by weight of cement, from 5 to 10% by weight of slag, from 42 to 50% by weight of silica, from 0.01 to 1% by weight of aerosol, from 0.01 to 1% by weight of methylcellulose and from 0.5 to 1% Part A; And a water-soluble epoxy resin, wherein the part A and the part B are mixed at a weight ratio of 10: 2 to 3, and a waterproof protective mortar composition for surface adjustment is applied to the surface of the structure;
(c) applying the waterproof primer for urea to the protective mortar; And
(d) applying waterproofing polyurea to the protective mortar and the waterproofing primer for urea,
The water-soluble epoxy resin,
15 to 25% by weight of a water-soluble epoxy resin solids, and 75 to 85% by weight of water; And
An amine solid content of 15 to 25% by weight, and water of 75 to 85% by weight,
Wherein the base and the curing agent are mixed in a weight ratio of 1: 0.5 to 1.5. ≪ RTI ID = 0.0 > 18. < / RTI >

Images