KR101215292B1 - Foaming fill-up material and method of construction using the same - Google Patents

Abstract

The present invention relates to a foam filler and a method for constructing a structure to which the foam filler is applied, and in particular, a foam filler including cement, glass powder or glass beads, an alkali metal compound or an alkaline earth metal compound, a corrosive metal, and water, and It relates to a construction method of the structure to which the foam filler is applied.

The foaming filler of the present invention, and the method of construction of the structure to which the foaming filler is applied is excellent in foamability, it is possible to fill a certain space even with a small amount of cement, and the construction is inexpensive because the theme is cheaper cement than epoxy resin Possible, there is an advantage that the productivity is improved by shortening the air as the curing time is reduced. In addition, due to the voids generated by foam filling, it is excellent in blocking noise and insulating properties between floors, improving the load burden of buildings due to low weight, and using less water compared to the existing cement casting. There is an advantage that the construction is easy to solve.

Foam, cement

Description

FOAMING FILL-UP MATERIAL AND METHOD OF CONSTRUCTION USING THE SAME}

The present invention relates to a foam filler, and to a method for constructing a structure to which the foam filler is applied. More specifically, the foam filler is excellent in foamability, so that a small amount of cement can be filled in a predetermined space, and uniform filling is possible in a predetermined space. It is excellent in filling property, and can be installed at low cost because of the theme of low-cost cement as compared to epoxy resin, and has the advantage of improving productivity by shortening the air as the curing time is reduced. In addition, due to the voids generated by foam filling, it is excellent in blocking noise and insulating properties between floors, improving the load burden of buildings due to low weight, and using less water compared to the existing cement casting. To solve the problem relates to a foam filler having the advantage of easy construction and construction method of the structure using the same.

In general building construction, various types of insulation or noise blocking structures have been proposed for inter- or inter-room insulation walls, or inter- or inter-room noise blocking, and examples of this are basic boards of various types (gypsum board, MDF board, etc.). It is common to construct frames and fill them with spaces (filled with fiberglass, rock wool, urethane foam, styrofoam, foam epoxy, foam concrete, etc.).

However, such a filler has a problem in that the insulation and sound insulation are inferior in part due to the difficulty of completely filling the space of glass fiber, rock wool, urethane foam, styrofoam, etc., which have a foamed form or a pore. Foaming epoxy that is foamed at the time has a problem in that construction cost is high as expensive resin material is used, and in the case of aerated concrete, the fluidity is poor and the space is not completely filled according to construction, so that the insulation and sound insulation are partially inferior. In case of using general cement or concrete, there is a problem that the curing time is long, the air is increased, the productivity is decreased, the weight is increased, the load burden on the building is increased, and the water is discharged to the lower part after pouring. There is a disadvantage in that construction is difficult.

In order to solve the problems of the prior art as described above, the present invention is excellent in fillability, and can be constructed at low cost because of the theme of low-cost cement, productivity is improved, and improves the load burden of the building due to low weight, The purpose of the present invention is to provide a foaming filler having excellent interlayer noise blocking and insulation properties, which has the advantage of easy construction by solving the problem that water is discharged to the lower part after pouring because the amount of water is less than the existing cement pouring, and the construction method using the same It is done.

Another object of the present invention is a complete filling in the filling space, not only excellent adhesion, but also foaming to satisfy the acid resistance, alkali resistance, injectability, inflow, impact resistance, crack resistance, adhesion, and storage properties at the same time The purpose is to provide a filler.

Another object of the present invention is to provide a method of construction of a structure having affinity with subsidiary materials and can be constructed in a short time by easy construction and rapid curing.

In order to achieve the above object,

a) 100 parts by weight of cement (based on solids);

b) 10 to 500 parts by weight of glass powder or glass beads;

c) 1 to 500 parts by weight of an alkali metal compound or an alkaline earth metal compound;

d) 1 to 500 parts by weight of the metal powder; And

e) 10 to 500 parts by weight of water

It provides a foam filler comprising a.

In another aspect, the present invention provides a method for constructing a structure, characterized in that the foam filler is applied to the filling of a predetermined space of the wall, interlayer structure or interlayer structure.

Hereinafter, the present invention will be described in detail.

Foam filler of the present invention is characterized in that it comprises cement, glass powder or glass beads, alkali metal compounds or alkaline earth metal compounds, metal powder, and water.

Preferably, the present invention

A) iii) 100 parts by weight of cement (based on solids);

   Ii) 10 to 500 parts by weight of glass powder or glass beads;

   V) 10 to 490 parts by weight of filler; And

   Iii) 1 to 500 parts by weight of an alkali metal compound or an alkaline earth metal compound;

   Subjects containing, and

B) 1 to 500 parts by weight of the metal powder;

   Ii) 10 to 490 parts by weight of the filler; And

   Iii) 10 to 500 parts by weight of water

   Foaming agent containing

It includes.

Cement (epoxy resin) of the a) used in the present invention is not largely limited if the cement used normally.

The cement may be applied to a variety of known cements, such as portland cement, white cement, special cement.

If the content of the cement is too low than the above-described parts by weight, there is a problem that the adhesion to the structural frame, cement, concrete, etc. is lowered. If the content is too high, the hardness, strength, and other properties as a filler deteriorated There is a problem.

The glass powder or glass beads of b) used in the present invention increase the strength of the filler, increase the viscosity to increase impact resistance and tensile strength, and improve flowability to improve filling properties. It also acts to suppress the volume expansion due to curing shrinkage and temperature rise. Of course, the glass beads or glass powder may be used or mixed with each other.

The glass powder or glass beads may be used in various particle shapes and particle sizes, and the particles of the glass powder or glass beads are obtained by pulverizing glass, cullet, glass fiber, or glass curette, and the glass composition of A, It will not specifically limit, if it is compatible with cement, such as C, E, and alkali-resistant glass powder / bead composition, In particular, glass powder or glass beads of E-glass composition are more preferable at the point of adhesiveness of various materials.

In addition, the glass beads may be spherical, elliptical, or glass beads of any shape equivalent thereto, and may be used, from those in which various sizes are distributed to those of only a predetermined size.

Although the particle diameter of the said glass powder or glass bead is not specifically limited, It is preferable that it is 10 micrometers-1 mm, More preferably, it is 5 micrometers-1 mm. In addition, the glass powder or glass beads also perform the function of filling the voids, so it is preferable to use the smallest possible particle size. If the particle diameter of the glass powder or glass bead is too small, the viscosity of the filler may be greatly increased, and if too large, the filling effect of voids may be reduced, thereby decreasing the strength of the filler or increasing shrinkage and expandability.

The glass powder or glass beads may be used in a large amount in the filler because it does not absorb the resin or water, in particular, even if the content of the glass powder or glass beads is high mixed dispersion in the cement and the volume filling effect is very excellent.

In particular, the glass powder or glass beads are preferably contained in 10 to 500 parts by weight based on 100 parts by weight of the cement solid content. If the content is less than 10 parts by weight, there is a problem that shrinkage and expansion may increase. If the content is more than 500 parts by weight, the viscosity is too high to be injected into a certain space to be filled, and the content of cement is relatively reduced. There is a problem that the adhesion of the filler may be lowered. In addition, when the foam filler of the present invention is used divided into the main agent and the blowing agent, the glass powder or glass beads may be included in the main agent and the blowing agent in appropriate amounts, and in particular, it is included in the main agent and the blowing agent in an amount of 10 to 490 parts by weight, respectively. good.

Therefore, in case of injecting into deep gaps or spaces in consideration of not only the size of a certain space to be filled but also the depth of spaces (air gaps) and bubbles between spaces, the filler (especially glass It is preferable to inject with a filler composition having excellent fluidity and injectability by adding beads).

In addition, when the glass powder or glass beads are added to the foam filler, if the filler injection conditions are low temperature, the glass powder content may be lowered by decreasing the content of the glass powder. On the contrary, if the filler injection conditions are high temperature, the glass powder or glass beads may be increased in viscosity to increase the viscosity. You can also increase the use.

Since the glass powder or glass beads have similar physical properties such as strength and hardness to the same or similar components as the concrete, the structure of the filler material inhibits interfacial separation and absorbs and transmits the impact applied from the outside, thereby significantly reducing damage. To form.

The alkali metal compound or alkaline earth metal compound of c) used in the present invention serves to control the degree of foaming of the foam filler.

The alkali metal compound or alkaline earth metal compound may be an alkali metal compound or beryllium containing lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), or francium (Fr). Of course, alkaline earth metal compounds containing Be, magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), or radium (Ra) can be used, and in particular, sodium-based Preference is given to using alkali metals, for example NaCl, NaCO ₃ and the like.

The alkali metal compound or alkaline earth metal compound may be adjusted in accordance with the required degree of foaming, of course, it is particularly preferably included in 1 to 500 parts by weight based on 100 parts by weight of cement solids, more preferably 10 To 300 parts by weight. If the content is less than 1 part by weight, there is a problem that the foaming is too small, and if it exceeds 500 parts by weight, there is a problem that the foaming is too much.

The metal powder of d) used in the present invention functions to react with the metal to form bubbles.

Of course, the metal powder may use aluminum (Al), zinc (Zn), iron (Fe), nickel (Ni), tin (Sn), lead (Pb), or copper (Cu). It is preferable to use an alloy or metal powder containing foaming properties, and more preferably to use aluminum powder.

The metal powder is preferably included in 1 to 500 parts by weight, more preferably 1 to 100 parts by weight based on 100 parts by weight of cement solids. If the content is in the above range, it is better to form bubbles.

In addition to the above components, the foam filler of the present invention includes water, the content of which is preferably included in 10 to 500 parts by weight based on 100 parts by weight of cement solids.

The water is not particularly limited as long as the alkali metal compound or alkaline earth metal compound can be dissolved (ionized).

The foaming filler used in the present invention may be configured to further include 10 to 500 parts by weight of the filler, the filler and its type and amount according to the type and amount of the gap or a certain space to be filled or the cement used It can be used in the form of a mixture of glass beads (glass bead) and glass powder, in particular, such as calcium carbonate (CaCO ₃ ), calcium sulfide, barium sulfides, such as light coal, back clay, Dix clay, or clay clay Or diatomaceous earth such as ash, silica (SiO ₂ ), or the like, may be used, and glass beads are preferably used.

As described above, the glass beads may be spherical, elliptical, or any shape glass beads. The glass beads may be used in a variety of sizes distributed from a single size.

The particle diameter of the glass beads or glass powder may be appropriately selected and used according to the construction application and the construction depth, and preferably 1 μm to 3 mm. They can also exhibit a variety of shapes and properties by the combination of beads having a small particle size of several μm and a large particle size of several mm. However, when the particle size exceeds 3 mm, the dispersibility is lowered or the width of the predetermined filling space is less than 3 mm can not be used efficiently. Particularly, the glass beads are preferably used in a relatively large amount where a large particle size is large, and a small particle size is preferably used in a small space.

The glass beads, such as glass beads of b), are added to the cement as fillers to provide very good fluidity by the ball bearing effect, thereby providing excellent injectability into the space, and excellent powder with respect to other additives. It provides acidity and provides flawlessness after injection. It also exhibits good shelf life where the mixture of cement and filler is well mixed with simple stirring even after long term storage. In addition, since the glass beads have higher strength and hardness than general silica or silica fume and have a spherical shape as described above, the glass beads absorb and disperse shocks from the outside well. Therefore, the foam filler of the present invention, in which glass beads are added as a filler, has excellent impact resistance.

The filler as described above is preferably included 10 to 500 parts by weight, more preferably 10 to 300 parts by weight based on 100 parts by weight of cement solids. If the content is less than 10 parts by weight, the flowability of the foam filler is lowered, the strength and hardness may be lowered after curing, and if it exceeds 500 parts by weight, the content of cement is relatively reduced, the strength of the foam filler There is a problem that can be lowered, and may be dropped after the foam filler is cured. In addition, when the foam filler of the present invention is divided into the main agent and the blowing agent, the filler may be included in the main agent and the blowing agent in appropriate amounts, and in particular, the main agent and the blowing agent may be included in an amount of 10 to 490 parts by weight, respectively.

The foam filler of the present invention comprising the above components may further include glass fibers as necessary. The glass fiber acts to increase the tensile strength and crack resistance of the cured filler when the foam filler is cured.

The glass fiber may be a long glass fiber of the E composition or a fiber of an alkali resistance composition, specifically, a chopped fiber cut into glass or carbon fibers having a fiber diameter of 10 to 20 ㎛ in a uniform strand length (chopped fiber) ) Or milled fibers prepared by milling to an average fiber length can be used. In particular, the chopped fibers are preferably cut to a fiber length of about 2 to 12 mm, and the pulverized fibers preferably have an average fiber length of 100 to 300 m. In particular, the pulverized fiber is preferable in view of the tensile strength reinforcement and dispersibility of the foamed filler, and may be used by mixing the chopped fiber and the pulverized fiber.

The glass fiber is preferably contained in 1 to 100 parts by weight based on 100 parts by weight of the solid content of the cement. When the content of the glass fiber is within the above range, the tensile strength of the cured filler is excellent, and there is an advantage that cracking, shrinkage, and expansion do not occur. In addition, when the foam filler of the present invention is divided into the main body and the blowing agent, the glass fiber may be included in the main body and the blowing agent in appropriate amounts, and in particular, the main body and the blowing agent may be included in an amount of 10 to 90 parts by weight, respectively.

Foam filler of the present invention containing the above components is expanded by more than 1.5 times compared to the conventional filler when cured by mixing reaction, and excellent foamability as described above, in particular having a reverse direction of gravity, such as ceilings, walls, etc. It is foamed after injection in the filling target space and has excellent filling ability in the direction of gravity, and also has excellent filling effect even in the place under pressure or load. In addition, there is an excellent effect on the construction, repair, and reinforcement of the structure because it is excellent in adhesion and workability in a single process without additional processes, and easy and simple to construct.

In another aspect, the present invention provides a method for constructing a structure, characterized in that the foamed filler is mixed with the cured filler and the foamed filler as described above is applied to the filling of a predetermined space of the wall, interlayer structure or interlayer structure.

The construction method of the structure is equally applicable to the repair and reinforcement of the structure, which is made by filling or injecting the foam filler of the present invention in a predetermined space to be the object of filling the structure.

The injection method is a mechanical injection method, a manual injection method, a pedal injection method, a hydraulic method and the like can be appropriately selected and applied by those skilled in the art.

In the method of constructing the structure by injection of the present invention, the foam filler is filled into a space to be filled, which is a predetermined space of a wall, an interlayer structure, or an interlayer structure made of a frame or a structure, and is foamed while being cured to strengthen the mother's strength. In addition, it penetrates bubbles and water in the sealed space and reaches the end of all the spaces requiring filling to completely fill the space. In addition, it hardens while supplementing the tensile strength, which is the fragility of the mother, prevents cracks, and is elastically applied to temperature changes, and has no merit of shrinkage during curing. In addition, the filling foam injected as described above is able to efficiently fill a large space or cavity area even with a small amount with excellent foaming power, and the specific gravity is similar to the structure so as not to be unreasonable to civil engineering or buildings, It has the advantage of being economic.

The method is performed by cleaning the filling part without any additional work, and then filling the filling part with a foam filler using a conventional method.

In addition, the foam filler according to the present invention can not only satisfy acid resistance, alkali resistance, injection resistance, impact resistance, crack resistance, adhesion, and storage resistance at the same time, but also allows simple construction and rapid curing to improve the function and shape of the structure in a short time. It can be fully secured, and can supplement the physical properties of the structure such as tensile strength and strongly attach it to the structure to extend the life of the structure.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

[Example]

Example 1

1 kg of cement is uniformly mixed with 1 kg of glass powder having an average particle size of 200 mesh and specific gravity of 2.54, 300 g of glass beads having an average particle size of 0.1 mm as a filler, and 50 g of NaCl with an alkali metal compound or an alkaline earth metal compound. The topic was prepared.

Then, 500 g of aluminum powder, 300 g of glass beads having an average particle size of 0.1 mm, and 300 g of water were uniformly mixed with a filler to prepare a blowing agent.

A foam filler was prepared by mixing the main agent and the blowing agent prepared as described above.

Example 2

In Example 1, except that 100 g of pulverized glass fibers having an average fiber thickness of 13.5 μm and an average fiber length of 300 μm were added to the main material, the main material and the foaming agent were prepared and mixed in the same manner as in Example 1, followed by foaming. Filler was prepared.

Example 3

Except for using calcium carbonate (CaCO ₃ ) in place of the glass beads as a filler in Example 1 was prepared in the same manner as in Example 1 and blowing agent was prepared by mixing the foam filler.

As a result of injecting the interlayer space using the filler prepared in Example 1, the foamed filler of Example 1 prepared according to the present invention was completely cured after foaming while filling the interlayer space, and the amount of use thereof was also compared with that of the conventional filler. It was confirmed that it takes about 1/2.

In addition, when the foam filling material of Examples 1 to 3 prepared in the present invention is injected into a cylindrical cylinder having an empty inside and then foamed, the cross section is cut after curing and then the entire cylinder is filled evenly without cracks. From this, it can be seen that the foam filler of the present invention is completely filled with no cracks or voids by being injected into the filling object space and foamed, it can be seen that it takes less than one day to fully cure it. In addition, it was found that the leakage to the lower part at the time of filling does not occur in such an embodiment, so that this can be easily performed even during repair work.

The foaming filler according to the present invention and the construction method of the structure using the same have excellent filling properties and can form a filling layer having excellent insulation and sound insulation through even foaming and filling, and the construction is inexpensive since the theme is low-cost cement. It is possible to improve the productivity due to the easy construction method, improve the load burden of the building due to the low weight, and solve the problem that water is discharged or leaked to the lower part after the installation because the amount of water is less than the existing cement placing. There is an easy advantage.

In addition, the porous structure provides foam fillers with excellent interlayer noise blocking and insulation properties, and the construction method using the same. It can be completely filled in the filling space, has excellent adhesion, and has acid resistance, alkali resistance, injection properties, inflow. It has the advantage of improving durability by satisfying the resistance, impact resistance, crack resistance, adhesion, and storage properties at the same time.

In addition, the filling layer has an affinity with subsidiary materials, and can be constructed in a short time by simple construction and rapid curing.

The present invention described above is not limited to the detailed description and examples of the above-described invention, and various modifications by those skilled in the art without departing from the spirit and scope of the present invention described in the claims below. And modifications are also included within the scope of the invention.

Claims (10)

a) 100 parts by weight of cement (based on solids); b) 10 to 500 parts by weight of glass powder or glass beads; c) 1 to 500 parts by weight of an alkali metal compound or an alkaline earth metal compound; d) 1 to 500 parts by weight of the metal powder; And e) 10 to 500 parts by weight of water Foam filler comprising a. The method of claim 1, The foam filler A) iii) 100 parts by weight of cement (based on solids);    Ii) 10 to 500 parts by weight of glass powder or glass beads;    V) 10 to 490 parts by weight of filler; And    Iii) 1 to 500 parts by weight of an alkali metal compound or an alkaline earth metal compound;    Subjects containing, and B) 1 to 500 parts by weight of the metal powder;    Ii) 10 to 490 parts by weight of the filler; And    Iii) 10 to 500 parts by weight of water    Foaming agent containing Foam filler, characterized in that it comprises a. The method of claim 1, Foam filler, characterized in that the particle diameter of the glass powder (glass) or glass beads (glass bead) of the b) is 10 ㎛ to 1 mm. The method of claim 1, The foam filler further comprises 10 to 500 parts by weight of the filler, wherein the filler is a mixture of glass beads and glass powder, calcium carbonate (CaCO ₃ ), calcium sulfide, barium sulfide, backclay, dixclay, sulfur clay , Ash, and silica (SiO ₂ ) is selected from the group consisting of at least one foam filler. 5. The method of claim 4, Foam filler characterized in that the filler is a mixture of glass beads and glass powder having a particle diameter of 1 μm to 3 mm. The method of claim 1, The alkali metal compound or alkaline earth metal compound of c) is lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), francium (Fr), beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and a compound containing an alkali metal compound or an alkaline earth metal compound selected from the group consisting of radium (Ra) Foam fillers. The method of claim 1, The foam filler may be a chopped fiber obtained by cutting a glass fiber or carbon fiber having a fiber diameter of 10 to 20 μm into a uniform strand length, or a milled fiber obtained by grinding an average fiber length to 100 to 300 μm. ) Is a foam filler, characterized in that it further comprises 1 to 100 parts by weight based on 100 parts by weight of cement. The method of claim 1, The metal powder of d) is a metal selected from the group consisting of aluminum (Al), zinc (Zn), iron (Fe), nickel (Ni), tin (Sn), lead (Pb), and copper (Cu). Foam filler, characterized in that. A filler in which the foamed filler according to any one of claims 1 to 8 is mixed and cured. The method for constructing a structure, wherein the foam filler according to any one of claims 1 to 8 is applied to the filling of a predetermined space of a wall, an interlayer structure, or an interlayer structure.