KR100483078B1 - Materials for construction using porous concrete for the diminuation of noise - Google Patents

Abstract

A construction material using noise reducing porous concrete is provided to apply noise reducing effect without a sound proofing member by making bricks, blocks, and panels from porous concrete containing a filler such as yellow loess in a continuous void. A brick(5) is made of porous concrete with continuous void ratio of 15~35%. The porous concrete is made by mixing water of 90~140kg/m^3, cement of 270~400kg/m^3, and crushed stone aggregate with particle diameter below 20mm of 1500~1700kg/m^3 for the mixture of 1m^3. The brick contains a filler(2) filled in a continuous void(1) to decrease the noise after hardening the concrete. The filler is at least one selected from a group composed of yellow loess, laterite, terra alba, black soil, charcoal powder, jade powder, and mica powder.

Description

Materials for construction using porous concrete for the diminuation of noise

The present invention relates to a building material using a noise-reducing porous concrete, and in detail, as having a noise reduction effect, the usability and economy are improved, and the noise reduction-type porous can increase the simplicity and precision of construction. The present invention relates to a building brick using concrete, a building block using noise reducing porous concrete, a building panel using noise reducing porous concrete, and a building finishing panel using noise reducing porous concrete.

In buildings, especially apartment houses and the like, walls and floors of limited thickness must be shared with neighboring households, and therefore problems occur due to noises such as floor impact sounds, and therefore the noises must be reduced.

For this purpose, in the prior art, a soundproofing member had to be installed separately in the already constructed building.

However, since the labor and cost of reinstalling the separate soundproofing member is required, even if the soundproofing member is not separately installed, a building material capable of reducing the noise is required, and in particular, the building material itself is frequently used in conventional building construction. It is necessary to give a reduction effect.

On the other hand, in the case of the conventional building finishing material, in order to finish the site, such as porous concrete to be directly placed on the wall or floor, according to this construction is not easy, there is also a problem of inferior precision.

Particularly, in a building having a heating pipe, when the finishing material is directly installed through the site casting at the position where the heating pipe passes, the construction is difficult, the time required for construction increases, and the precision is inevitably deteriorated.

In addition, when the finishing material is directly cast in the field, there is a problem in that it is not easy to reinforce the function because it is difficult to attach and detach the member for reinforcing the function.

Therefore, there is also a need for the development of building materials that have the effect of reducing noise while increasing the simplicity and precision of construction and further enhancing the function.

Therefore, the present invention has been made to solve the above problems and needs,

An object of the present invention is to give a noise reduction effect to the bricks, blocks, panels that are frequently used building materials, building bricks, blocks using noise-reducing porous concrete that can improve the utilization and economic efficiency of the material, To provide a panel.

It is also an object of the present invention to provide a panel for building finishing materials using noise-reducing porous concrete which has a noise reduction effect and at the same time can increase the simplicity and precision of construction, and further easily reinforce the function.

The present invention for achieving the above object, in the building material, per 1m ^{3 of the} mixture for producing concrete, 90 ~ 140 kg / m ^{3 of} water, 270 ~ 400 kg / m ^{3 of} cement, crushed aggregate of 20 mm or less particle size 1500 It is characterized in that the brick is made of porous concrete containing a filler filled in ~ 1700 kg / m ³ , a continuous porosity of 15 to 35%, and filled in the continuous voids.

In addition, the present invention, in the building material, per 1 m ^{3 of} concrete mixture, 90 to 140 kg / m ^{3 of} water, 270 to 400 kg / m ^{3 of} cement, 1500 ~ 1700 kg / m ³ of crushed aggregate of 20 mm or less particle diameter Is prepared by mixing, the continuous porosity is 15 to 35%, characterized in that the block made of porous concrete having a filler to be filled in the continuous voids.

In addition, the present invention, in the building material, per 1 m ^{3 of} concrete mixture, 90 to 140 kg / m ^{3 of} water, 270 to 400 kg / m ^{3 of} cement, 1500 ~ 1700 kg / m ³ of crushed aggregate of 20 mm or less particle diameter Is blended and produced, the continuous porosity is 15 to 35%, characterized in that the panel is made of porous concrete containing a filler to be filled in the continuous voids.

In addition, it is preferable that at least one recessed part having a predetermined depth is formed at one side of the panel. In this case, when forming the connecting body of two or more panels, it is preferable that a reinforcing glass fiber mesh is attached to the inter-panel joint portion, and the panel is a reinforcing glass fiber mesh or a lower surface of the panel. It is preferred that the steel mesh is attached.

And in the said building material, It is preferable that the said filler contains at least 1 or more selected from the group which consists of ocher, red earth, white clay, black earth, charcoal powder, jade powder, and mica powder, The said building material is the said filler It is further preferred that the agar further comprises agar or that agar is further applied to the surface of the building material filled with the filler.

And in the said building material, it is preferable that the particle diameter of the said aggregate is 5-13 mm.

Hereinafter, a building material using the noise reduction porous concrete according to the present invention will be described in detail.

In the present invention, certain porous concretes having fillers filled in continuous voids are used to form bricks, blocks or panels, one of the most frequently used building materials.

The porous concrete, water 90 per mixture 1m ³ of concrete produced ~ 140 kg / m ^3, the cement 270 ~ 400 kg / m ^3, which is produced from a mixture consisting of crushed stone aggregate 1500 ~ 1700 kg / m ³ of 20mm or less particle size The continuous porosity of the produced porous concrete is preferably 15 to 35%.

Within this range, as shown in the following examples, the filling of the filler for noise reduction is easy, and appropriate strength can be ensured.

As the cement, conventional cement can be used, for example, ordinary portland cement as defined in KS L 5201 can be used.

The aggregate is preferably used by crushing the gravel to have a particle diameter of 20mm or less, it is suitable for reducing noise and maintaining strength in the particle size range.

The gravel within the particle size range can be largely divided into crushed gravel of less than 5mm, crushed gravel of 5 ~ 13mm, crushed gravel of 13 (over) ~ 20mm, and shows a difference in noise reduction, strength, and other characteristics according to each group .

Table 1 shows specific gravity, absorption rate, performance rate, and unit volume weight according to the particle size range of the crushed gravel.

Particle size range importance Absorption rate (%) % Of performance Unit weight (kg / m ³ ) 13 (greater than) -20 mm 2.76 1.01 61.2 1688 5 ~ 13mm 2.69 1.56 60.0 1614 Less than 5mm 2.63 1.77 60.8 1605

The water uses tap water that does not contain harmful amounts of oils, acids, alkalis, salts and organics in accordance with KASS 5.2.3.

As shown in Experimental Example 1 below, the porous concrete is reduced in strength when the continuous porosity is increased. However, the continuous porosity must be increased in order to increase sound absorption through the filling of the filler, and the proper porosity must be secured in order to function properly as a structure, and thus the continuous porosity cannot be excessively increased.

Therefore, it is appropriate to secure 15 to 35% as a range of the continuous porosity.

On the other hand, in the particle size of the aggregate, in the first case of 13 (excess) to 20mm, the second case of 5 to 13mm, the third case of less than 5mm, the first case can increase the porosity for sound absorption However, the strength tends to decrease somewhat, and in actual use, a corrected blending ratio is required and the harshness is severe.

The second case is somewhat disadvantageous in terms of economics and strength, such as the input of cement is required than the third case. However, it is suitable because it has an effective particle diameter in the filling of the filler into the continuous void as described below.

On the other hand, the third case has a lower continuous porosity than the second case and it is difficult to fill the filling. But it has economic advantages.

In the present invention, it is preferable to use the aggregate in the second case in consideration of securing sound absorption, efficiency and ease of securing the same. At this time, as the compounding ratio, as described above, the aggregate of the second case, that is, the aggregate of 5 to 13 mm is included at 1500 to 1700 kg / m ³ per 1 m ^{3 of the} total mixture, and the water is 90 to 140 kg / m ³ and include 270-400 kg / m ³ .

In order to reduce noise of the porous concrete produced as described above, a filler is filled in part or all of the pores of the porous concrete.

At this time, after the curing of the porous concrete to a certain degree for filling and placing the filler on top, when the vibration is applied, the filler is filled in the continuous pores of the porous concrete.

Thereafter, the filler forms a porous concrete filled in part or all of the continuous pores therein to produce bricks, blocks, and panels, respectively.

As the filler, soil which is a natural material, for example, loess, red clay, white clay, black clay and the like can be filled with water, and charcoal powder can be mixed with water to fill the stone powder, that is, jade powder and Mica powder etc. can be combined with water and filled. At least one selected from the group consisting of loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder and water can be combined and filled. Such loess, red clay, white clay, black clay, charcoal powder, The filler of jade powder and mica powder is a fine powder filled in the continuous pores of the hardened porous concrete to achieve a noise reduction effect, so long as it is a fine powder filled in the continuous pores of the hardened porous concrete for the noise reduction effect, It is not limited only to the loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder, and materials equivalent thereto are also included in the scope of the present invention.

In addition, the filler such as ocher may be filled in combination with minerals and vegetable oils in addition to water, or may be filled in combination with powders such as water, minerals, vegetable oils and vegetable powders.

The vegetable oil may be a lavender oil or a herb oil, it is possible to easily give a directional function to the building material to be produced with the noise reduction effect.

The powder is added to impart desired specific functions or to improve specific functions. For example, when the rosin powder is blended as a vegetable powder, it is possible to absorb environmentally harmful substances.

On the other hand, the filler may further contain agar (gardock).

In other words, if agar liquid is prepared by dissolving agar in water and mixed with filler, or agar liquid is applied to the surface of building materials such as porous concrete bricks, blocks, and panels filled with filler, and then dried. In addition, the powder of the filler such as loess coagulates with the agar without affecting the provision of the noise reduction effect, thereby preventing the phenomenon of filling or detaching of the filler powder such as loess.

Figure 1a is a schematic diagram showing the building arch brick using a noise reduction porous concrete according to an embodiment of the present invention, Figure 1b is a building BI type block using a noise reduction porous concrete according to an embodiment of the present invention Figure 1c is a schematic diagram showing a panel having no depression, using a noise-reducing porous concrete according to an embodiment of the present invention.

As shown in Figs. 1A, 1B and 1C, the brick 5, the block 6 and the panel 9 fabricated using the porous concrete are filled with fillers such as ocher or the like filled in the continuous pores 1, respectively. Has

The brick 5 may be manufactured in the form of a regular hexahedron, and may be manufactured in an arch shape as shown in FIG. 1A. In addition, it can be produced in the form of an arm, a round, a round, a hole, an auxiliary brick and the like modified according to the shape or use.

The block 6 may also be manufactured in a conventional form, and may be manufactured as a BI block as shown in FIG. 1B. In addition, it can manufacture with BM type, BS type, etc.

The panel 9 is molded into a flat structure having no depressions as shown in Fig. 1C. This panel 9 is used for slabs, floor finishes, walls, wall finishes, and is manufactured in different thicknesses to suit each application.

When the building materials of bricks, blocks, and panels manufactured as described above are applied to the construction of a building, noise can be reduced even when a separate soundproof wall is not installed in the constructed building, thereby improving the usability and economic efficiency of the materials. .

In the present invention, the use of the above-mentioned porous concrete can not only achieve the noise reduction effect, but also increase the simplicity and precision of construction, and further, manufacture a panel for building finishing material which is easy to install a function reinforcing member.

That is, per 1m ^{3 of the} mixture for producing porous concrete as described above, water 90-140 kg / m ³ , cement 270-400 kg / m ³ , 20mm or less particle size, preferably 5 ~ 13mm particle size of the second case By mixing 1500-1700 kg / m ³ of crushed aggregates, a porous concrete is prepared such that the continuous porosity is preferably 15 to 35%.

After filling the part of the continuous void with a filler, it is molded into a flat panel to form a molded product, wherein the panel has a depth corresponding to the heating pipe so that one side of the heating pipe can be inserted therein. It is possible to form the portion continuously, and thus to form the continuously protruding portion continuously.

As the filler, as described above, soil which is a natural material, for example, loess, red clay, white clay, black clay, and the like can be mixed with water to be filled, and charcoal powder can be mixed with water to fill the stone powder. That is, jade powder, mica powder, etc. can be combined with water and filled. It is also possible to mix and fill at least one selected from the group consisting of loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder and water. As described above, such loess, red clay, white clay, Fillers of black soil, charcoal powder, jade powder, and mica powder are fine powders which are filled in the continuous pores of the hardened porous concrete to achieve a noise reduction effect, and thus are filled in the continuous pores of the hardened porous concrete for the noise reduction effect. As long as the fine powder, it is not limited only to the loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder, and materials equivalent thereto are also included in the scope of the present invention.

In addition, the filler such as ocher may be filled in combination with minerals and vegetable oils in addition to water, or may be filled in combination with powders such as water, minerals, vegetable oils and vegetable powders.

The vegetable oil may be a lavender oil or a herb oil, it is possible to easily give a directional function to the building material to be produced with the noise reduction effect.

The powder is added to impart desired specific functions or to improve specific functions. For example, when the rosin powder is blended as a vegetable powder, it is possible to absorb environmentally harmful substances.

On the other hand, the filler may further contain agar (gardock).

That is, by filling the agar liquid prepared by dissolving the agar in water or the like by mixing with the filler, or by applying the agar liquid to the surface of the panel in which the depression filled with the filler is formed, and then drying the surface, the sound attenuation effect is imparted. Without affecting, the powder of the filler such as loess becomes coagulated with agar, thereby preventing the phenomenon of filling or desorbing of the filler powder such as loess.

Figure 2a is a schematic cross-sectional view showing a panel for building finishing material using a noise-resistant porous concrete according to an embodiment of the present invention, Figure 2b is a building finishing panel using a noise-reducing porous concrete according to an embodiment of the present invention. It is a schematic perspective view which shows.

As shown in FIGS. 2A and 2B, the porous concrete panel 10 is provided with a depression 11 and a protrusion 12 relatively protruding thereto.

The panel 10 has, for example, two recesses 11 and three protrusions 12, wherein the length of the lower side of the bottom protrusion 12 of the edge 12 and the protrusions inside the panel ( When the ratio of the length L of the lower side of 12) is 1: 2, when two or more panels manufactured according to this are connected adjacently, the length of the lower side of the connected protrusion is L, so that the lower part of the protrusion inside the panel is L. It becomes equal to the length (L) of the side. Therefore, when the panel is connected, protrusions having a uniform length on the lower side are continuously formed.

And on the slopes of each projection, the one side length a of the slope is equal to the height h of the projection (a = h), that is, the angle of the slope is 45 ° from the bottom to make the structure safer. Protrusions can be formed.

The manufacturing method of the panel is as follows.

First, in order to manufacture the panel, a formwork is formed in which the protrusions are continuously formed on the lower surface, and the porous concrete mixture described above is put therein.

Figure 3a is a schematic plan view showing a panel manufacturing formwork according to an embodiment of the present invention, Figure 3b is a side schematic view showing a panel manufacturing formwork according to an embodiment of the present invention, Figure 3c is an embodiment of the present invention As a side schematic view showing an enlarged protrusion of a panel for forming a mold according to an example, FIGS. 3A to 3C schematically show a form for manufacturing a panel having a length L of a lower side of a protrusion of an edge (for example, see FIG. 5B). It is shown as.

As shown in FIGS. 3A to 3C, the formwork 20 has a rectangular cylinder shape of, for example, 1000 × 1000 × 40 mm, and a plurality of protrusions 21 protruding downwards are regularly arranged on the lower surface of the rectangular cylinder. Formed. As a result, a plurality of recesses 22 which are relatively recessed in the formwork 20 are formed.

The protrusion 21 corresponds to the protrusion 12 of the panel 10, and the depression 22 corresponds to the depression 11 of the panel 10.

The protrusion 21 has, for example, two opposing squares, a hexahedron having a trapezoidal side, and a length of one side of a square cylindrical side of the two squares is 150 mm, and a length of one side of the other square is 100 mm. And the two squares are concentric.

Such After the projections mixing a mold formed by a plurality of continuous, 13mm or less aggregate 1614kg / m ^3, water 106kg / m ^3, the cement 295 kg / m ^3, after placement, and sealed with a polyethylene film at room temperature for 24 hours After curing and demolding, curing is carried out in a constant temperature water bath at 20 ± 3 ° C until a predetermined age.

Alternatively, in addition to the above method, after pouring with the porous concrete, it is also possible to manufacture by the method of curing through the steam curing drying process.

After curing, the filler such as loess, charcoal powder, etc. is placed on top of the porous concrete while the porous concrete is not demolded from the formwork, and the filler is filled by the vibration method.

In this way, when the porous concrete filled with the filler is demolded from the formwork, a porous concrete panel having a filler such as ocher in the continuous voids is produced.

In addition, after installing the porous concrete panel manufactured without adding the filler in advance and adding the filler such as ocher, the curing process is required if necessary, and then the filler is mixed with water to apply the surface vibration directly in the field to be filled. It may be.

The panel manufactured as described above has a noise reduction effect by using a noise-reducing porous concrete as described above, and unlike the conventional method, it is easy and precise to construct a standardized panel without the trouble of pouring directly at the time of finishing. It has the advantage of being able to.

Figure 4a is a schematic diagram showing the installation form in the case where the panel formed with the depression according to an embodiment of the present invention is installed in the heating pipe, Figure 4b is a panel formed with the depression according to an embodiment of the present invention mortar It is a schematic diagram which shows that it is fixed using.

As shown in FIG. 4A, the heating pipe 50 is inserted into the recess 11 of the panel 10, and thus, the construction is simple and precise even where the heating pipe 50 passes. .

And as shown in Figure 4b, it is possible to simply use the mortar (7) to secure the panel 10 or to level the top of the panel.

On the other hand, Figure 4c schematically shows the installation form in the case where the panel without the depression according to an embodiment of the present invention is installed where there is a heating pipe, Figure 4d does not have a depression according to an embodiment of the present invention It is a schematic diagram which shows that when a panel which is not installed is installed where there is no heating pipe, it is fixed using mortar.

The panel 9 having no depression can be used for construction more simply and precisely than in the case of directly placing the finishing material in the field in the past, but it is still difficult to construct in the place where there is a heating pipe.

Therefore, as shown in FIG. 4C, in this case, after attaching and fixing a plurality of spaced apart attaching porous concrete 8 to the lower portion of the panel 9 as a mortar substitute, the heating porous material 8 is used as a substitute for the mortar. By passing the pipe 50 can solve the above problems.

Of course, such a panel 9 can be fixed using mortar, and FIG. 4D shows that the panel 9 can be easily fixed using the mortar 7, especially in the absence of heating piping.

Figure 5a is a schematic diagram showing the cross-sectional structure of a porous concrete panel having a reinforcing glass fiber mesh installed in accordance with an embodiment of the present invention, there is no depression between the protrusions and protrusions connected from the joint, Figure 5b is another embodiment of the present invention It is a schematic diagram which shows the cross-sectional structure of the porous concrete panel with the recessed part between the protrusion and the protrusion continued from the joint in which the reinforcement glass fiber mesh which concerns on the example was installed.

As shown in FIG. 5A, two panels having a length of 1 / 2L of the lower edge of the protrusion may be integrated so that the lower edge of the protrusion has an L length, and as shown in FIG. 5B, the length of the lower edge of the protrusion of the edge is illustrated. L panels can also be connected in a continuous joint structure.

In addition, a fiber glass mesh may be applied to the connector of the panel fabricated as described above for load resistance reinforcement and panel joining. In addition to the fiberglass mesh, a steel mesh, that is, a wire mesh may be applied, in particular, to reinforce the load resistance of the lower surface.

As shown in Figure 5a and 5b, the lower portion of the molded porous concrete panel 10 is bonded to the reinforcement glass fiber mesh 31 is bonded to reinforce the load-bearing performance, wherein, in addition to the reinforced glass fiber mesh, the steel mesh is Can be bonded and attached.

In addition, the reinforcing glass fiber mesh 30 for preventing the upper crack and the gap is bonded and attached to the panel 10 and the upper part of the joint part of the panel 10.

The method of attaching the reinforcing glass fiber mesh or the steel mesh may use, for example, a cement paste coating method.

In particular, the porous concrete panel has a wide cross-sectional area of the surface and a lot of irregularities, so that the adhesion of the flame retardant glass fiber is significantly higher than that of other materials, and therefore, it is particularly suitable for the application of the reinforcement glass fiber mesh.

Table 2 shows the basic physical properties of the reinforcing fiberglass mesh.

Basic Properties of Glass Fibers Fiber weight (gf / m ² ) Density (gf / m ² ) Tensile strength (kgf / cm ² ) Blue strain (%) Thickness (mm) Modulus of elasticity (kgf / cm ² ) Property value 947 1.23 7550 2.0 0.77 3.77 × 100.5

In order to reinforce the cracking and shearing of the panel due to the upper fixed and moving loads, a reinforcing fiberglass mesh or steel mesh of 2 to 5 mm, having a lattice shape, of the material shown in Table 2, is shown in FIG. Attach to the bottom.

For this attachment, in particular in the panel fabrication step, after placing the reinforcing fiberglass mesh inside the formwork, the porous concrete mixture may be mixed and poured as described above. Of course, it is also possible to mix and pour the porous concrete mixture after placing the steel mesh inside the formwork in the panel manufacturing step.

On the other hand, at the time of attachment of the crack and gap prevention glass fiber mesh, for example, a 50 mm wide bandage mesh made of the material of Table 2 is buried in each of the panels and the area where the panel is connected to each other to be adhesively reinforced.

The installation method of the building finishing panel made of noise-reducing porous concrete manufactured as described above is as follows.

When facility heating piping is carried out, the piping installation interval is examined beforehand so as not to overlap with the protrusion of the panel, and then the pipe is firmly fixed using a fixture to be positioned between the depressions of the panel.

The fabricated porous concrete panel is fixedly attached using mortar so that the upper surface is horizontal, and after the attachment portion is sufficiently cured, the joint portion of the panel is attached with the glass fiber mesh for preventing the above cracks and gaps.

The paneled porous concrete has not only simplicity and precision in construction, but also porous concrete having a predetermined pore, which has a long heat, and thus has a long heating duration.

Furthermore, if necessary, the long-term heating efficiency can be increased, and at the same time, since the structure of the filler is retained inside the voids, the impact vibration noise can be reduced, and in particular, it is useful for suppressing the interlayer noise by acting as a floor structure in which the panel is floated. .

Moreover, since the panel has a better surface finish than in-site casting, it also has the advantage of filling the natural material in the voids of the panel, cleaning the upper part of the panel, and then directly attaching the finishing material sheet.

Hereinafter, the present invention will be described in more detail by explaining preferred embodiments of the present invention. However, the present invention is not limited to the following examples, and various forms of embodiments can be implemented within the scope of the appended claims, and the following examples are only common in the art while making the disclosure of the present invention complete. It is intended to facilitate the implementation of the invention to those with knowledge.

Experimental Example 1

In Experimental Example 1, the relationship between the porosity and the strength according to the particle size of the aggregate was tested.

First, as the material used, cement uses ordinary portland cement as defined in KS L 5201, and the aggregates are each 20 mm of gravel (Example 1 of this Experimental Example 1; hereinafter referred to as Example 1 only in this Experimental Example 1). ), 13 mm (Example 2 of this Experimental Example 1; hereinafter referred to as Example 2 only in this Experimental Example 1), 5mm (Example 3 of this Experimental Example 1; hereinafter referred to as Example 3 only in this Experimental Example 1) A crushed one having a particle size of) was used.

In the compounding of concrete, for each of the above Examples 1 to 3, the water binder ratio (W / B) was set to 0.36, and the porosity of the porous concrete was 20% using the unit volume weight and the working rate of the aggregate. In order to maintain the constant quality, the paste was fluorine value of 230 ± 10mm.

Table 3 shows the concrete mix in each of Examples 1 to 3 described above.

The mixing amount of concrete was based on 35 liters per batch, and the mixing was performed by mixing the mixing water containing cement and the mixed material into a 60 liter forced mixer, mixing for 90 seconds first, then adding coarse aggregate and mixing for 90 seconds. To a total of 180 seconds.

As a mold for producing a test piece was molded using a φ 10 × 20cm.

Each specimen was prepared by the method of fabricating specimen of domestic standard porous concrete.

Each test body was divided and poured into three layers, and each layer was compacted 25 times with a compacting rod.

After the production was completed, the specimen was sealed in polyethylene, cured at room temperature for 24 hours, and then demolded and cured to a predetermined age in a constant temperature water bath at 20 ± 3 ° C.

According to the test method for the properties of porous concrete, basic properties of porous concrete include porosity, continuous porosity, permeability coefficient, and compressive strength after curing. Flexural strength may be included in basic properties as necessary. However, the flexural strength is to be measured in principle using the same test specimens except for the basic physical test.

First, the porosity was measured by the volumetric method in accordance with the test method of porous concrete.

That is, the diameter and length of the test body were measured twice, and the volume V ₁ of the test body was calculated from the average value. The test piece was immersed in water for more than 24 hours, to measure the water weight W _1. At this time, the test specimen was shaken in water so that no air remained in the specimen, and the air was completely removed. Thereafter, the mixture was left to stand for 24 hours at 20 ± 2 ° C. and 60% relative humidity to obtain a dry condition, and the weight W ₂ was measured. In addition, and then jeolgeon until the weight becomes constant in a drying furnace of 105 ± 5 ℃, measuring the dry weight W v. _3, and calculating the porosity by the following equation 1 and the equation 2.

[Equation 1]

Porosity (%) = (1- (W ₃ -W ₁ ) / V ₁ ) × 100

[Equation 2]

Continuous Porosity (%) = (1- (W ₂ -W ₁ ) / V ₁ ) × 100

Here, W ₁ is the weight of the test body, W ₂ is the weight weight, W ₃ is the dry weight, and V ₁ is the volume of the test body.

Meanwhile, the compressive strength was measured according to KS F 2405 (Concrete's Compressive Strength Test Method). Before the compressive strength test, the upper and lower surfaces of the test specimen were ground by using a grinding machine (MIC-196-1-74, MARUI, Japan). After measuring twice, diameter and length, the cross-sectional area was computed using the average value of diameters.

In addition, at the time of pressurization, the central axis of the test body was at the center of the accounting plate, and the load was pressed until the test body was destroyed at a constant speed of 2 to 3 kg / cm ² every second. The compressive strength of concrete was calculated by dividing the maximum load received by the test specimen by the cross section.

The test equipment used Japanese U.T.M (UH-100A type) with a maximum load of 100t.

Figure 6a is a graph showing the continuous porosity of the porous concrete according to the particle size in the present Experimental Example 1, Figure 6b is a graph showing the porosity of the porous concrete according to the particle size in the present Experimental Example 1, Figure 6c 1 is a graph showing the compressive strength of the porous concrete according to the particle size. At this time, all the target porosities set by the mixing | blending were 20%.

The continuous porosity of porous concrete tended to increase rapidly as the maximum size of coarse aggregate increased, especially in the range of 13 ~ 20mm, and tended to increase as the maximum size decreased.

Experimental Example 2

In Experimental Example 2, the relationship between noise reduction was evaluated for the porous concrete panel and the ocher-filled porous concrete panel.

In this Experimental Example 2, a test body was produced as follows.

Comparative Example 1 of Experimental Example 2; Hereinafter referred to as Comparative Example 1.

In Comparative Example 1, a porous concrete specimen panel having a specification of 50 × 50 × 5 cm was manufactured using porous concrete.

At this time, as the porous concrete blending ratio, by mixing a 13mm aggregate to 1614kg / m ^3, cement 295kg / m ^3, water 106kg / m ^3, to prepare a test piece of 50 × 50 × 5cm.

<Example 1 of Experimental Example 2; Hereinafter referred to as Example 1>

In Example 1, a porous concrete test panel of 50 × 50 × 4.5 cm was manufactured using porous concrete as a material.

At this time, by mixing a 13mm aggregate to 1614kg / m ^3, cement 295kg / m ^3, water 106kg / m ^3, to prepare a test piece of 50 × 50 × 4.5cm as a panel shape.

Then, the porous concrete was sufficiently cured, the natural ocher was finely crushed, kneaded well with water, placed on top of the porous concrete, and the vibration was applied to the surface of the porous concrete so that the ocher was sufficiently filled in the continuous pores.

Then, the ocher on the top of the porous concrete was removed to complete the panel.

The test specimens of Comparative Examples 1 and 1 prepared as described above were all sealed with polyethylene, cured for 24 hours, then demolded, and cured to a predetermined age in a constant temperature water bath at 20 ± 3 ° C. Exposed to remove moisture sufficiently.

FIG. 7A shows a support for noise measurement in Experimental Example 2, and FIG. 7B shows a device for noise measurement in Experimental Example 2. FIG.

As shown in FIG. 7A, for noise measurement, first, a 5 mm rubber plate (not shown) is placed on a flat floor to reduce external vibration noise, and four test specimen supports 60 of 38 cm are installed thereon. Then, the test chain panels (for example, the panel 10 in which the depression was formed) were placed on the support 60. In order to eliminate the impact noise of the support 60 and the test body 10 generated at the time of the impact noise test, a rubber plate 65 of 5 mm was inserted in the contact portion between the support 60 and the test body 10, respectively.

As shown in FIG. 7B, a sound absorbing chamber 90 made of a sound absorbing plate having a thickness of 70 mm is formed on the outside of the support so that external noise and internal noise can be blocked.

On the outside of the test body, a drop support (not shown) was installed so that the height of the falling object was approximately 20 cm from the upper part of the test body so that the height of the falling object was the same in the test body of Comparative Example 1 and Example 1.

The same noise measuring instrument was installed on the surfaces of the test specimens of Comparative Examples 1 and 1, each of the noise measuring instruments (100) and the same noise measuring instruments (100) in the interior of the lower sound absorbing chamber (91) under the test body.

Then, the rubber mallet was free-falled six times or more at the same place, and the value of the impact noise noise of the upper and lower parts was measured.

Table 4 shows the noise measurement value of Comparative Example 1 (unit: dB).

Measurement count Top bottom Reduction One 95.2 89.1 6.1 2 89.3 83.3 6.0 3 82.4 75.9 6.5 4 83.9 78.8 5.1 5 76.7 69.3 7.4 6 83.4 79.7 3.7 medium 85.15 79.35 5.8

Table 5 shows the noise measurement value of Example 1 (unit: dB).

Measurement count Top bottom Reduction One 84.0 65.0 19 2 85.2 67.5 17.7 3 98.5 82.8 15.7 4 88.6 70.5 18.1 5 95.7 79.3 16.4 6 91.7 74.4 17.3 medium 90.61 73.25 17.36

As shown in Tables 4 and 5, in Comparative Example 1, the average noise reduction was 5.8 dB. However, it was found that the surface impact sound value was relatively low in the case of the upper surface of Comparative Example 1, because it was determined that the impact reflection sound penetrates into the test body when the impact does not generate much surface reflection sound.

On the other hand, the average noise reduction value of Example 1 was 17.36 dB, which was about 12 dB lower than the average noise reduction value of Comparative Example 1.

As such, it was found that the use of the loess-filled porous concrete of Example 1 was more effective than the comparative example 1 in reducing the interlayer noise. It can be seen that the shock noise is absorbed.

According to the present invention, in particular, a sound-proof porous concrete having fillers such as loess in the continuous voids of the interior is constructed of bricks, blocks, and panels for building materials. Even if it is not installed, the noise reduction effect can be provided. Therefore, the utility and economical efficiency can be improved compared with the conventional building materials.

In addition, since the panel having the depression of the present invention is made of noise-reducing porous concrete, it gives a noise reduction effect to a building constructed by using the same, thereby improving the usability and economic efficiency of the building panel. In addition, the ease and precision of construction can be improved. Furthermore, the panel is particularly capable of preventing cracks and crevices and reinforcing load-bearing performance, and has an advantage of easy provision of such a function.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Figure 1a is a schematic diagram showing the building arch brick using the noise-reducing porous concrete according to an embodiment of the present invention,

Figure 1b is a schematic diagram showing a building block using a noise-reducing porous concrete according to an embodiment of the present invention,

Figure 1c is a schematic diagram showing a building panel having no depressions, using a noise-reducing porous concrete according to an embodiment of the present invention,

Figure 2a is a schematic cross-sectional view showing a panel for building finish formed with depressions, using a noise-reducing porous concrete according to an embodiment of the present invention,

Figure 2b is a schematic perspective view showing a panel for building finish formed with depressions, using a noise-reducing porous concrete according to an embodiment of the present invention,

Figure 3a is a plan view showing a panel for forming the formwork according to an embodiment of the present invention,

Figure 3b is a side schematic view showing the formwork for producing a panel according to an embodiment of the present invention,

Figure 3c is a side schematic view showing an enlarged projection of the panel for forming the formwork according to an embodiment of the present invention,

Figure 4a is a schematic diagram showing the installation form when the panel in which the depression is formed according to an embodiment of the present invention is installed where there is a heating pipe,

Figure 4b is a schematic diagram showing that the panel in which the depression is formed in accordance with an embodiment of the present invention is fixed using mortar,

Figure 4c is a schematic diagram showing the installation form in the case where the panel without a depression according to an embodiment of the present invention is installed where there is a heating pipe,

Figure 4d is a schematic diagram showing that the panel having no depression in accordance with one embodiment of the present invention is fixed using mortar when installed in the absence of the heating pipe,

Figure 5a is a schematic diagram showing a cross-sectional structure of a porous concrete panel connector without a depression between the protrusions and the protrusions continued from the joint, the reinforcing glass fiber mesh is installed according to an embodiment of the present invention,

Figure 5b is a schematic diagram showing a cross-sectional structure of a porous concrete panel connector having a depression between the protrusions and the protrusions continued from the joint, the reinforcing glass fiber mesh is installed according to an embodiment of the present invention,

Figure 6a is a graph showing the continuous porosity of the porous concrete according to the particle size in Experimental Example 1 of the present invention,

Figure 6b is a graph showing the porosity of the porous concrete according to the particle size in Experimental Example 1 of the present invention,

6c is a graph showing compressive strength of porous concrete according to particle size in Experimental Example 1 of the present invention;

7A is a schematic view showing a support for measuring noise in Experimental Example 2 of the present invention;

7B is a schematic diagram showing an apparatus for measuring noise in Experiment 2 of the present invention.

* Short description of the major reference marks *

1: void 2: filler

5: Arch type brick 6: BI type block

7: Mortar 8: Porous concrete for mortar substitute

9: Panel without depression 10: Panel with depression

11: depression of panel 12: protrusion of panel

20: die 21: the protrusion of the die

22: depression of the formwork

30: fiberglass mesh to prevent cracks and crevices

31: Glass fiber mesh (or steel mesh) for load-bearing performance reinforcement

50: piping 60: support

65: rubber plate 90: sound absorption room

91: Sound absorption room inside 100: Noise measuring instrument

Claims (10)

In the building material, per 1 m ^{3 of} concrete preparation, 90 to 140 kg / m ^{3 of} water, 270 to 400 kg / m ^{3 of} cement, 1500 to 1700 kg / m ³ of crushed aggregate having a particle size of 20 mm or less are mixed and produced. It is a brick made of porous concrete with a continuous porosity of 15 to 35%, After curing of the porous concrete has a filler that is filled in the continuous voids for noise reduction, The filler is a building material using noise-reducing porous concrete, characterized in that at least one selected from the group consisting of loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder. In the building material, per 1 m ^{3 of} concrete preparation, 90 to 140 kg / m ^{3 of} water, 270 to 400 kg / m ^{3 of} cement, 1500 to 1700 kg / m ³ of crushed aggregate having a particle size of 20 mm or less are mixed and produced. Block made of porous concrete with a continuous porosity of 15-35%, After curing of the porous concrete has a filler that is filled in the continuous voids for noise reduction, The filler is a building material using noise-reducing porous concrete, characterized in that at least one selected from the group consisting of loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder. In the building material, per 1 m ^{3 of} concrete preparation, 90 to 140 kg / m ^{3 of} water, 270 to 400 kg / m ^{3 of} cement, 1500 to 1700 kg / m ³ of crushed aggregate having a particle size of 20 mm or less are mixed and produced. It is a panel made of porous concrete with a continuous porosity of 15 to 35%, After curing of the porous concrete has a filler that is filled in the continuous voids for noise reduction, The filler is a building material using noise-reducing porous concrete, characterized in that at least one selected from the group consisting of loess, red clay, white clay, black clay, charcoal powder, jade powder and mica powder. The method of claim 3, wherein the panel, Building material using noise-reducing porous concrete, characterized in that one or more depressions are formed. The method of claim 4, wherein the panel, When forming a connecting body of two or more panels, building materials using noise-reducing porous concrete, characterized in that the reinforcing glass fiber mesh is attached to the joint between the panels. The method of claim 4, wherein the panel, Building material using a noise-reducing porous concrete, characterized in that the reinforcing glass fiber mesh is attached to the lower surface of the panel. The method of claim 4, wherein the panel, Building material using a noise-reducing porous concrete, characterized in that the forced mesh is attached to the lower surface of the panel. delete The building material according to any one of claims 1 to 7, The filler further comprises agar or the building material using noise-reducing porous concrete, characterized in that the agar is further applied to the surface of the building material filled with the filler. The building material according to any one of claims 1 to 7, Building material using the noise-reducing porous concrete, characterized in that the particle size of the aggregate is 5 ~ 13mm.