KR20070055436A - A single size fine aggregate and its using method - Google Patents

Abstract

The present invention relates to a method of using single grain fine aggregate and single grain fine aggregate and a porous permeable mortar and a porous permeable mortar made of single grain fine aggregate. That is, fine aggregate having a single grain size of 5 mm or less, and a method of using the same, and a porous permeable mortar in which the single grain fine aggregate is mixed with cement and water at a predetermined ratio, and cement secondary products such as blocks and bricks using the same. Products, precast products), floors such as roads, walkways and tennis courts, as well as methods for use in various fields such as soundproof walls. Therefore, the present invention, as well as the effect of improving the permeability and sound insulation, especially when used as a flooring material is promoted inflow of rainwater to the ground by excellent permeability to prevent groundwater exhaustion, to prevent the rise of geothermal heat, etc. Will have an effect.

According to the present invention, the single-grained fine aggregate, characterized in that it consists of only a single grain size of 5mm or less having only a slight error by sieving each mesh, and the use method and fine aggregate 70-80% by weight of the fine grain of only 5mm or less, cement 15 Permeable mortar comprising 25 wt% and 4-10 wt% of water, and a method of using the porous permeable mortar are provided.

Single grain fine aggregate, permeability mortar, porosity

Description

Method of using single grain fine aggregate and single grain fine aggregate and method of using porous permeable mortar and porous permeable mortar made of single grain fine aggregate {A single size fine aggregate and its using method}

The present invention relates to a method of using single-grain fine aggregate and single-grain fine aggregate, and a method of using porous permeable mortar and porous permeable mortar made of single-grain fine aggregate. That is, fine aggregate having a single grain size of 5 mm or less, and a method of using the same, and a porous permeable mortar in which the single grain fine aggregate is mixed with cement and water at a predetermined ratio, and cement secondary products such as blocks and bricks using the same. Products, precast products), floors such as roads, walkways and tennis courts, as well as methods for use in various fields such as soundproof walls. Therefore, the present invention, as well as the effect of improving the permeability and sound insulation, especially when used as a flooring material is promoted inflow of rainwater to the ground by excellent permeability to prevent groundwater exhaustion, to prevent the rise of geothermal heat, etc. Will have an effect.

Most of the technology development related to concrete is concentrated in the field of high strength concrete technology, and recently, manufacturing technology development and conditions of permeable concrete (color permeable concrete, concrete secondary products, etc.) have been developed according to the demands of various construction markets. There is a lack of technical maintenance.

Conventional water-permeable concrete is mainly used for driveways and sidewalks, and has a coarse aggregate of 5 to 13 mm as a main material, and includes materials with a smaller particle size.

Coarse aggregate having such a coarse particle size and fine aggregate having fine particle size are mixed in a wide particle size range to produce a color permeable concrete, thereby exposing problems such as material separation, weather resistance degradation, and rigidity degradation.

That is, 80 to 90% by weight of the coarse aggregate having a particle size of 5 to 13 mm and 10 to 20% by weight of the aggregate having a particle size of 5 mm or less (hereinafter referred to as 0 to 5 mm) are empty and placed on the site. Vibration compaction causes a material separation phenomenon, so that only the aggregate aggregates are collected underneath, and the gap is filled so that no pitcher occurs at all. And fine aggregates fill gaps between coarse aggregates, making it difficult to pitch.

In the case of using only coarse aggregate having a particle size distribution of 5 to 13 mm, the permeability is good, but the number of joints is small, and the strength is significantly reduced. In addition, in the case of using only fine aggregates having a particle size distribution of 0 to 5 mm, there is a problem in that the strength increases but the pitcher does not increase because of many joint points.

Such a conventional permeable concrete is a high-strength concrete through which water and air do not pass in a compact state. In particular, pavement blocks, asphalt, cement concrete, etc. are impervious products, and rainwater does not flow to the surface during rainy weather, and rapidly gathers downstream along the surface, causing flooding, groundwater depletion, destruction of underground ecosystems, and desertification of the lower pavement. Done.

The present invention finds a particle size in which the number of contact points, permeability and porosity of each particle size is maximum in order to solve the conventional problems as described above, and has only a single particle size, that is, a single particle size of 1 mm, 2 mm, etc. among the fine aggregates (particle size 0-5 mm). By constructing fine aggregates and mixing them, a large number of contacts are ensured due to the fine aggregate of a single particle size, high strength is achieved, and there is no separation of materials during construction, and the porosity maximizes the porosity due to the uniform particle size of the single particle. The purpose is to provide a pitcher mortar.

In other words, by selecting and blending only the fine aggregate granularity separately, it prevents material separation phenomenon during construction and maximizes porosity and permeability due to porosity, and develops high-strength porous permeable mortar due to the number of contact points of single granularity to improve permeability and noise prevention by sound absorption. To prevent heat islands due to moisture absorption and heat storage, improve vegetation, walking feeling, noise barriers such as subways, permeable walls of parking lots and roofs, and porous permeable mortar with bricks, vegetation lake blocks, filter walls of water purification facilities, etc. Increasing the effectiveness of moisturizing, vegetation, and road paving materials such as permeation blocks by cement secondary products, flood prevention, groundwater replenishment, vegetation, underground ecosystem preservation, pavement drainage promotion, noise prevention, sound absorption, heat storage, Enhancing ecosystem circulation effects such as preventing urban heat islands, improving walking comfort, rainwater storage, and preventing global warming, controlling humidity, and water quality The purpose of the present invention is to provide a porous permeable mortar with high utilization in various fields such as sintering and its use method.

Fine aggregates according to the present invention is characterized in that it consists of only a single granularity having only a slight error by sieving each mesh (mesh). The 'single particle size with only a small error' does not mean that the entire particle size distribution of 0 to 5 mm as in the prior art, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc. means that only the single particle size is selected and used. That is, the particle size used in the present invention refers to fine aggregates selected by screening only those having only a slight error for each mesh, which may be referred to as a single particle size such as 0.8 to 1.2 mm or 1.2 to 1.6 mm.

And the fine aggregate with only the above-mentioned granularity can be used as a porous permeable mortar. That is, the porous permeable mortar of the present invention is characterized by having a composition ratio of 70 to 80% by weight of fine aggregate, 15 to 25% by weight of cement, and 4 to 10% by weight of water having only a single particle size. In particular, the fine aggregate is to say that having a particle size of 0 ~ 5mm, in the present invention, the use of a fine aggregate with only a single particle size, which means that only the single particle size is selected and used as described above.

As described above, the porous permeable mortar of the present invention is characterized in that the amount of cement used in mixing the cement is poorer than the standard amount. That is, in the case of the sub-mixing, the water permeability is reduced by blocking the pores by many cement pastes, and if the water-to-cement ratio is high, the material separation phenomenon may occur and the voids may be reduced. It is mixed with the adjusted empty mixture.

When the strength is lowered due to the poor mixing of the amount of cement, it is also possible to add a polymer admixture. The amount of the polymer admixture may be about 15% by weight or less of the amount of cement used. That is, the porous permeable mortar of the present invention has a composition ratio of 70 to 80% by weight of fine aggregate having only a single grain size, 15 to 25% by weight of cement, 4 to 10% by weight of water, and 1 to 4% by weight of polymer admixture. As such, when the cement admixture is used, it is possible to prevent material separation during construction and to prevent excessive cement particles from blocking pores.

And instead of the above cement Back cement  Can be used. And PC  You may mix binders, such as resin or an epoxy resin. When using a binder Only with single grain  Done Aggregate  It has a mixing ratio of 90 to 97 weight% and 3 to 10 weight% of binders. Aspal If you use a mixture of Only with single grain  Done Aggregate  It can be used as permeable asphalt with a mixing ratio of 90 to 97% by weight and 3 to 10% by weight asphalt.

In addition, the fine aggregate of the present invention can be used to recycle recycled sand recycled waste aggregate. In other words, by using the fine aggregate obtained from the waste concrete by sifting by sieve fraction, it is possible to increase the recycling degree of construction waste materials. In particular, the use of circulating regeneration sand is characterized by high absorption rate and increase the effectiveness of moisturizing and vegetation.

Of course, in addition to the above composition may include a pigment for producing a variety of colors, colored quartz may be used as fine aggregate.

Porous permeable mortar having the characteristics of the above-mentioned single-grained fine aggregate, poor blending, circulating reclaimed sand, etc. are blended with single grains, and the voids are maximized by securing a constant space between the particles, The number of contacts increases the bonding point with which the cement paste is bonded, thereby improving the strength of the material.

That is, the present invention, unlike the general pitcher concrete, does not use coarse aggregates, but only fine aggregates are used, and fine aggregates are used by carefully selecting only single grains. Therefore, the porosity is maximized by the very uniform particle size, and the number of contacts increases due to the improvement of the permeability and the number of grains of fine aggregates, thereby increasing the junction point with the cement paste to achieve high strength.

The number of contacts between the grains constituting the permeable concrete is a factor that greatly affects the bonding force between the grains and has a direct correlation with the strength of the pitcher cone. The porosity is a factor directly affecting the permeability and drainage capacity of the pitcher. In addition, the length and number of pitching paths that pass when water flows through the voids also affects the permeability.

Therefore, the present invention avoids mixing the coarse aggregate and the fine aggregate in a wide particle size distribution as in the prior art, and is used by selecting only the single grain of fine aggregate, thereby increasing the strength and permeability.

In the conventional case, coarse aggregates are used to increase the porosity, so that the permeability is good, but this is because the input amount of the adhesive is increased to reinforce the bonding force between the grains, or filled with fine aggregate, so that the voids are filled, so the use of the coarse aggregate is more permeable. The result is bad. In addition, due to the fine aggregates of the wide particle size distribution, the fine aggregates are squeezed down to fill the voids during the compaction, making the permeability impossible. And when using a thick aggregate there is also a problem that the walking is significantly reduced.

However, the present invention by using only the fine aggregate of the granularity as described above will achieve the conventional problems and unique effects of the present invention.

In the example of 100 mm wide and 50 mm high for each single particle size, data comparing the number of grains, the number of contacts, the porosity, the permeation path length, and the permeate flow rate are shown in the table below.

Grain Diameter (mm) Pellets Number of contacts Porosity (%) Pitch path length (mm) One 610,125 3,630,750 36.11 58.29 2 75,985 448,408 36.34 58.07 3 22,431 131,251 36.58 57.86 4 9,428 54,692 36.81 57.64 5 4,809 27,654 37.05 57.43 6 2,773 15,802 37.28 57.21 7 1,739 9,825 37.52 56.99 8 1,161 6,497 37.76 56.78 9 812 4,503 37.99 56.57 10 590 3,239 38.23 56.35

As described above, the porosity is similar by single particle size, and the present invention is characterized by constituting a porous permeable mortar with a single particle size of fine aggregate of 5 mm or less in order to increase the strength by a large number of contacts.

The porous water permeable mortar can be used in various ways such as cement road products, such as road pavement, flooring of the parking lot, sidewalks, blocks. Since the water permeability and the sound absorption performance are only excellent, it is possible to prevent the depletion of the groundwater by inflowing the rainwater to the basement, to prevent the risk of flooding due to the intensive waterproofing to the sewer, and to obtain various effects such as noise prevention and moisture absorption. have.

In other words, it is used in any place where porosity is required such as prevention of heat island due to heat storage, improvement of vegetation, walking feeling, noise barrier such as subway, sound absorption layer such as parking lot and roof, porous permeable mortar brick, vegetation protection block, water purification facility wall, etc. This is possible.

Porous permeable mortar of the present invention having the various embodiments described above can be used for the preparation of vegetation relief bank blocks. In this case, it is a method to prevent the fall of river banks, etc., and to use it as a raft block for planting various flowers and grass. Vegetation protection block was used as concrete in the conventional case, but water did not penetrate into the protection block, and thus the plants planted therein could not grow into an ecological environment. However, in the case of preparing and using a lake block using the porous permeable mortar of the present invention, the plant may grow in the lake block.

And the porous permeable mortar of the present invention has a method of using as a pavement of the road. When used as a pavement of the road, its strength is excellent, so the use of re-installation equipment is significantly reduced, and in case of rain, rainwater is discharged immediately to the ground, thereby preventing traffic accidents due to rain slipping.

And there is a method to use as a floor pavement of the playground, such as outdoor tennis courts, basketball courts. Conventional tennis courts cannot be played because they cannot be drained and had to stop the game due to the rain during the game or cover the wrapping paper. However, in the case of packaging with the bottom of the porous permeable mortar of the present invention is excellent drainage of rainwater is also possible to play in the rain.

And it is used as a floor pavement of the playground, especially a running track. This is the same as the case used for the packaging of the tennis court.

And there is a method to use the floor of the parking lot or the pavement of the road. It consists of a large area of parking lot and is installed in the back of public places. Therefore, there is a lot of use of the vehicle is inconvenient due to the accumulation of water, or high geothermal heat to increase the internal and external temperature of the vehicle parked for a long time, causing energy waste by cooling the vehicle. However, in the case of using the present invention, because water is good and water and air pass through, the heat island phenomenon of the wide parking lot is prevented by lowering the geothermal heat, and noise by sound absorption is also prevented.

In addition, there is a method of using it as a floor paving material for various plazas and bicycle paths, as well as walking floors such as sidewalks and sidewalks. In this case, the surface is very evenly constructed by porous permeable mortar using fine granularity of single granularity, so the walking comfort is excellent and the drainage is good, making the use very comfortable.

It is a case of precast products (PC products), which are pre-molded into finished products such as bricks and blocks, and used as main materials for products used in various buildings. Such a PC product will be manufactured according to the present invention, and the components of various buildings using the same will function as soundproof and moisture proof.

And there is a method of using a porous permeable mortar for the production of biofilter wall for water purification. In order to purify the waste water, various methods such as a biofilm method or a filter method are used, but a purification tank in which the filter wall manufactured according to the present invention is installed at regular intervals by particle size is purified while the waste water passes through the filter wall.

In addition, porous permeable mortar is used as a roof top floor of a building. The rooftop of the building is exposed to hot sunlight and is always heated to high temperatures. This hot heat is transferred to the interior of the building to increase the temperature of the room, in order to lower it to insulate or cool the unnecessary cost and energy is wasted. However, when the porous permeable mortar of the present invention is installed only by a predetermined thickness as a roof flooring material, it is insulated by a myriad of pores, and the rainwater is contained therein to prevent an increase in temperature. In particular, the porous permeable mortar of the present invention can be reduced in weight due to its weight is reduced to 1,900 ~ 1,950kg / ㎥ because the weight is composed of a single grain of porosity.

In addition, there is a method used for the construction of soundproof walls of a traffic facility by using a porous permeable mortar in tunnels, subway facilities, and soundproof walls of roads. In this case, it is possible to create a pleasant urban environment by preventing noise and absorbing noise of roads and subways due to its porosity.

In addition, when the interior walls of various buildings are constructed, the soundproof effect can be obtained.

In addition, it is possible to perform the water purification function without cement toxicity by putting fine aggregates of only single grain size into bags (bags) made of high-strength polyester fibers (civil fibers) by particle size, and stacking them in a river or water purification plant without passing them through cement. Can be.

In addition, the fine aggregate having only the above-mentioned granularity may be colored quartz and mixed with a pigment of the same color as the colored quartz to prepare a porous color permeable mortar. The colorization in this way can be used in various ways as described above.

By various methods, such as flooring, building walls, soundproofing walls of transportation facilities, and rafting blocks, etc., it can be used in various ways, to prevent rainwater from seeping into the ground and depleting groundwater, and to prevent heat islands. In addition, it also helps prevent global warming.

As such, the present invention provides a porous permeable mortar having a porous function, and when used as a variety of pavement, including roads, flood prevention, groundwater replenishment, vegetation, underground ecosystem preservation, lower layer drainage promotion, noise prevention, sound absorption, heat storage, urban heat island It is effective in preventing, improving the feeling of walking, storing rainwater, and preventing global warming. It is also widely used in various fields such as humidity control and water purification.

In addition, since the porous permeable mortar of the present invention is composed of a single porosity of the porosity, it is possible to reduce the weight, there is an effect that can reduce the load of the structure as well as the above effects in forming the interlayer of various buildings.

Claims (20)

Single grain fine aggregate, characterized in that it consists of only a single grain size of less than 5mm with only a slight error by sieving each mesh. A method of using single grain fine aggregate, which is used as a water purification filter without cement toxicity by putting fine aggregates having a single grain size of 5 mm or less into a bag made of high strength polyester fiber for each particle size, stacked in a river or a water purification plant, and passing water. A method of using single grain fine aggregate, which is used as a pitcher asphalt by mixing 90% to 97% by weight of fine aggregate having only a single grain of 5 mm or less and 3% to 10% by weight of asphalt. Porous permeable mortar comprising 70 to 80% by weight of fine aggregate, 15 to 25% by weight of cement, and 4 to 10% by weight of water having only a single grain of 5 mm or less. Porous permeable mortar comprising 70 to 80% by weight of fine aggregate, 15 to 25% by weight of cement, 4 to 10% by weight of water, and 1 to 4% by weight of polymer admixture having a single particle size of 5 mm or less. Porous permeable mortar comprising a mixing ratio of 90 to 97% by weight of fine aggregate and 3 to 10% by weight of binder having only a single particle size of 5 mm or less. The porous permeable mortar according to any one of claims 4 to 6, wherein the fine aggregate is circulating regenerated sand regenerated from waste materials, and the moisturizing effect and the effectiveness of vegetation are enhanced with high absorption rate. The porous permeable mortar according to any one of claims 4 to 6, wherein the fine aggregate is colored quartz. A method of using a porous permeable mortar using a porous permeable mortar mixed with fine aggregates having a single grain size of 5 mm or less for the production of vegetation revetment blocks. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a road pavement. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a floor paving material of a tennis court. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a track bottom paving material of a playground. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregate having a single grain size of 5 mm or less as a floor pavement of a parking lot. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a walking pavement. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a sole pavement for bicycle roads. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less for the production of precast products. A method of using a porous permeable mortar using a porous permeable mortar mixed with fine aggregate having a single grain size of 5 mm or less for the preparation of a biofilter wall for water purification. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less as a roof top floor of a building. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less for the construction of soundproof walls in traffic facilities. A method of using a porous permeable mortar using a mixed porous permeable mortar including fine aggregates having a single grain size of 5 mm or less for the construction of walls for soundproofing of buildings.