KR101250002B1 - Method for producing water permeable block - Google Patents

Abstract

PURPOSE: A manufacturing method of a permeable block with excellent functions of anti-rust, breaking-away prevention of a rough stone from a block surface part and slip-resistance by the use of natural stones is provided to prevent a falling-off in water permeability caused by fine dust blocking pore spaces and to reduce the hazard of hurting from a fall using natural stone to increase slip resistance. CONSTITUTION: A manufacturing method of a permeable block with excellent functions of anti-rust, breaking-away prevention of a rough stone from a block surface part and slip-resistance by the use of natural stones is composed of the following steps of: measuring the amount of mixture to mix at least two materials among aggregate, cement and water; mixing the measured materials in a mold; press-molding the mixture from the step of mixing in a mold; washing the cement on the surface of an aggregate by spraying water; and curing the washed block; and brushing the surface of the block to smooth the surface. [Reference numerals] (AA) First compression molding; (BB) Second compression molding; (CC) Third compression molding; (DD) Washing; (EE) Curing; (FF) Brushing;

Description

Manufacturing method of permeable block excellent in preventing rust, using natural stone to prevent gemstone detachment and non-slip function {METHOD FOR PRODUCING WATER PERMEABLE BLOCK}

The present invention relates to a method for producing a permeable block having excellent rust prevention, block surface part gemstone separation prevention, non-slip function using natural stone.

The present invention relates to a method for producing a permeable block having excellent rust prevention, block surface part gemstone separation prevention, non-slip function using natural stone. In the case of roadway, road pavement is made of asphalt concrete or cement concrete, which is not permeable, and blocks are placed on sidewalks. It flows directly into rivers or into sewage treatment plants.

As a result, the proportion of water that penetrates into the ground is low, and the groundwater is depleted, and in case of heavy rain, the inflow of water into the river is accelerated, causing the flooding of the river, and preventing the microbial life in the ground, so that the trees are not growing well. There were various issues.

In order to solve this problem, various techniques for recycling rainwater have been developed. For example, Korean Patent Publication No. 2007-0050193 discloses a sewage pipe or rainwater pipe in case of heavy rainfall due to prolonged rainfall, heavy rain, and heavy rainfall. A rainwater treatment system is disclosed that attempts to prevent damage such as backwater, flooding of rivers, and surface subsidence due to almost overload. However, since there is a limitation in treating rainwater using only sewer pipes, in recent years, by using a permeable permeable block to pave the sidewalk, rainwater can escape through the soil beneath the sidewalk.

However, the permeation block used in the existing block is often clogged by fine dust on the road, and thus the permeability of the block is often deteriorated. When the blockage occurs on the surface of the block, the surface of the block becomes smooth and falling accidents occur. It often occurred.

In addition, one of the causes of deteriorating the performance of the permeable block is a compression molding process during the manufacturing process of the block is also the cause that the pressure formed on the aggregate during the compression process becomes smaller the gap formed between the aggregates.

In addition, since the surface of the permeable block is exposed to the sidewalk, there should be no aesthetic flaw. However, the conventional permeable block uses metal molds to have rust on the surface of the permeable block or rust on the surface of the process. not. In addition, as time passes after installation, rust spreads on the surface of the block, and the surface part of the stone is removed or the sliding is increased.

The present invention has been made to overcome the above problems, and provides a manufacturing method for maintaining the voids of the permeation block to a predetermined size or more in order to increase the permeability.

In addition, by preventing the rust on the surface of the permeable block provides a method of producing a permeable block excellent in the block surface portion detachment or slipping function.

In order to achieve the object as described above, using a natural stone to provide a method of producing a permeable block excellent in preventing rust, preventing block surface stone separation, non-slip function, blending any two or more materials of aggregate, cement, water A weighing step of adjusting a blending amount for mixing; a mixing step of putting the weighed material into the molding mold and mixing; a molding step of pressing the mixture put into the molding mold; spraying water on the molded block to spray cement on the aggregate surface. Washing step for washing; Curing step for curing the washed block; Brushing step for making the surface of the block uniform.

 The weighing step includes the steps of measuring the upper, middle and lower layers, respectively.

The forming step may include forming an upper layer, a middle layer, and a lower layer.

 In the mixture used to prepare each layer, the cement should contain 60 to 90 parts by weight relative to 100 parts by weight of aggregate, and the AE agent would be 70 to 80 parts by weight based on 100 parts by weight of cement and the rosin would be 10 to 20 parts by weight of 100 parts of aggregate. The mixture may be prepared by mixing parts by weight.

In the case of the upper layer may be mixed by mixing 5 to 20 parts by weight of alcohol with respect to 100 parts by weight of aggregate.

   Natural stone aggregate of 4 ~ 6mm diameter in the upper layer, 7 ~ 9mm aggregate in the middle layer may be used to aggregate 9 ~ 12mm in the lower layer.

 In the forming step, an intermediate plate (curing die) made of any one of plastic and wood may be used in a mold of an existing metal material.

The molding die used in the forming step may be 10 to 20% larger than the size of the block to be manufactured.

By the method as described above, it is possible to manufacture a block having excellent block permeability and excellent slipperiness, excellent appearance and excellent water permeability.

1 is a flow chart showing a manufacturing process according to the present invention
2 illustrates an embodiment of the present invention.
3 is a test report showing the effect of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a view showing a manufacturing process of a permeable block according to the present invention. The permeable block according to the present invention is composed of three layers of an upper layer, a middle layer, and a lower layer, and the size of the pores formed in the block increases as the layer goes down.

In the past, the permeable block was accumulated as the fine dust on the road descended to the air gap, and when the size of the air gap was constant from the upper floor to the lower floor, the dust was accumulated due to gravity, which was often blocked from the lower air gap. In this case, the pores are blocked from the bottom, and fine dust continues to accumulate, and even after a certain time, the pores of the upper layer are blocked, eventually blocking the pores on the surface, resulting in a low sliding resistance of the block, resulting in a fall accident.

Larger voids reduce the rate of particulate buildup, but too large voids reduce block durability. Since fine dust tends to descend downward due to gravity, it is an alternative to increase the size of the pores downward, but it is technically difficult to control the size of the pores within one block, and the cost becomes expensive.

The present invention overcomes this problem by dividing the permeable block into several layers to increase the air gap toward the lower layer. That is, it is difficult to make the size of the pore increases from one block to the bottom, but the present invention overcomes this difficulty by dividing the block into several layers and varying the size of the pores in each layer. In other words, 4-6 mm diameter natural stone aggregates in the upper layer, 7-9 mm aggregates in the middle layer and 9-12 mm aggregates in the lower layer, the diameter of the aggregates increases toward the bottom and the space between the aggregates becomes larger.

Particularly, when forming the upper layer, 4 ~ 6mm diameter natural stone aggregate and cement are mixed in order to emphasize the strength of the permeable block and the beauty of the surface and to increase the sliding resistance. The cement has an air entraining agent, which causes air bubbles. In order to combine rosin and alcohol, rosin enhances the binding strength of natural stone aggregate, and alcohol promotes the combination of rosin and other materials.

In this case, because natural stone aggregate is used in the upper layer, there is no chemical reaction by snow removal agent (CaCl2) even during winter snow removal, so there is no corrosion or discoloration of the block and it maintains the same appearance as when it was first installed.

In addition, the natural stone used in the upper layer has a higher slip resistance value than conventional aggregates, thereby reducing the risk of falling accidents.

In December 2010, Seoul established the Seoul-type sidewalk pavement slip resistance standard. When the cross-sectional slope is 0 to 2% or less on the flat level, the slip resistance standard is 40BPN or more and the slope is over 2%. In case of 10% or less, the standard of slip resistance was set to 50BPN or more. In the case of the permeable block manufactured by the method described above in the present invention, 67BPN much higher than the standard value of Seoul was measured. 3 is an inspection test report of the block according to the present invention can be seen that the slip resistance is 67BPN while maintaining the permeability coefficient. That is, even though the permeable block has a sliding resistance value of 20% or more higher than the standard, the sliding resistance can be maintained even after long use.

In addition, when manufacturing the pitcher block according to the present invention uses an intermediate plate (curing die) made of wood or plastic in the mold of the existing metal material. In other words, the steel tools used in the forming step are rusted due to the corrosion of the steel as the service life increases, and this rust spreads to the permeable block, causing the block surface to break away, resulting in a decrease in permeability and slipping of the surface. Used to increase help. In addition, the voids of the permeable block tended to be compressed due to the pressure during molding. In the present invention, the voids are compressed by 10% to 20% larger than the size of the block to be manufactured to form the molding mold. This reduces the problem.

In addition, if rust occurs and is buried on the surface of the upper layer, the slippage of the surface rises and if the rust spreads over time, the degree becomes more severe. In the case of rust due to water on the surface of the block in the washing step after the molding operation There was. In addition, when using a metallic die for the intermediate plate (curing die) material in the curing step, water flowed from the upper die to the lower die, and the product used to have rust. In the present invention, since curing is performed using an intermediate plate (curing die) made of plastic or wood so as to prevent rust, the problem of rust is fundamentally blocked.

Among the materials used for each layer of the upper, middle, and lower layers, cement should contain 60 to 90 parts by weight relative to the weight of the aggregate, and AE agent is 70 to 80 parts by weight based on the weight of the cement. Mix your wealth. When forming the upper layer is mixed by mixing 5 to 20 parts by weight of alcohol relative to the weight of the aggregate.

As described above, the measured aggregate is stirred, and the stirring is a step of kneading the measured substance to have a uniform distribution, and a known device may be used. Mixing refers to the step of kneading the metered material into a uniform distribution.

The block is molded through three steps, and the mixed and stirred dough is put into the mold and molded into the shape of the mold. The shape of the block may be various depending on a mold such as a rectangular shape or a square shape.

Initially, the mixture of aggregate for forming the lower layer is put into compression molding firstly, and the mixture of aggregate for forming the middle layer is put therein. Molding

At this time, since the lower layer undergoes three compression processes, the interval between the aggregates may be narrower. For this purpose, the size of the mold may be larger than the size of the block to be actually manufactured.

Blocks formed in this way go through a washing step to inject water onto the finished blocks to remove cement from the aggregate surface after molding. When the blocks are moved along the conveyor belt, the water is It can take the form of spraying. At this time, the washing step may be installed in two nozzles to perform the first washing and the second washing step, the injection pressure of the water can be adjusted in the range of 3 ~ 6bar.

The curing step is to suppress the heat of hydration generated by cement hardening. The heat of hydration refers to a phenomenon in which moisture is rapidly evaporated when concrete is hardened, and curing is a strength by inhibiting heat of hydration and suppressing evaporation of water. It is a measure to make it come out properly. In the present invention, the curing is preferably cured in a state where the block is exposed to steam, but is not limited thereto.

In addition, when the block is put in the curing operation, a middle plate (curing die) made of wood or plastic can be used to prevent the water from the surface of the block in the washing step and the rust formed in the material used in the curing room. In addition, the mold itself may be metal, plastic, or wood.

The demolding step means a process of separating the cured block from the mold. In this case, after the curing step is completed, a brushing step of processing the surface of the block using a brush may be added to remove the protruding or sharp parts of the block surface before the demolding step to make the surface even. have.

Blocks made in this way do not rust because they are made of plastic or wood intermediate plates (curing dies), and because they can be formed at greater pressure using molds that are larger than the size of the blocks that are actually manufactured, While maintaining the size of the block can be obtained durable.

In addition, in order to change the size of the pores of the upper, middle and lower layers, the larger aggregate is used toward the bottom, so that the pores are not blocked by fine dust, so that the permeability is maintained for a long time, and the upper layer does not block the pores by fine dust. Using natural stones that are not altered by drugs, you can get beautiful blocks with less slipperiness.

In addition, in the present invention, a separate blowing agent may be used to make a bubble, but a blowing agent generating hydrogen gas, such as aluminum, which is currently used, is affected by the bubble generation of aluminum by a nitrite component contained in cement mortar. It is difficult to control the degree of foaming as the foaming does not occur as much as desired. In the present invention, a diimide compound having a -HNNH- group can be used as a blowing agent in order to generate bubbles without the influence of cement, mortar, and the like. Preferably, carbodiimide is used, and since it generates nitrogen gas unlike the prior art, the degree of foaming can be adjusted according to the degree of using the blowing agent, thereby controlling the degree of use in the upper, middle and lower layers. The size of the pores can be adjusted. The blowing agent is used to control the size of the voids between the aggregate and the aggregate. The voids are molded by the aggregate, but the size of the voids formed between the aggregates by the blowing agent can be finely controlled.

More specifically, 70 to 80 parts by weight of 100 parts by weight of the cement is further mixed in the mixing step, 20% is added to the weight when forming the middle layer, and 40% is added to the weight when forming the lower layer. You can do this by adjusting the amount to achieve the desired pore size.

Figure 2 shows an embodiment of a three-stage natural stone pitcher block. Since the upper layer 11 is a part exposed to the outside, instead of using a more advanced material, the thickness is thinner, and the middle layer 12 and the lower layer 13 are larger than the upper layer 11 as the size of the pores increases. It can be to have.

Claims (8)

As a method of manufacturing a permeable block with natural stone, excellent prevention of rust, prevention of uncut stones on the block surface, and slip prevention function,
A metering step of adjusting a blending amount for blending any two or more materials of aggregate, cement, and water;
The mixing step of mixing the weighed material into the mold and mixing
A molding step of press molding the mixture introduced into the mold;
Washing step of washing cement on the aggregate surface by spraying water on the molded block
Curing step to cure the cleaned block
A brushing step to even the surface of the block;
The weighing step includes the steps of measuring the upper, middle and lower layers, respectively.
The forming step includes forming the upper layer, the middle layer, the lower layer,
In the mixture used to prepare each layer, the cement should contain 60 to 90 parts by weight relative to 100 parts by weight of aggregate, and the AE agent would be 70 to 80 parts by weight based on 100 parts by weight of cement and the rosin would be 10 to 20 parts by weight of 100 parts of aggregate. Mixing parts by weight to prepare a mixture
In the case of forming the upper layer, it is characterized by mixing 5 to 20 parts by weight of alcohol with respect to the weight of aggregate 100, using natural stone to prevent rust, block separation of gemstones, non-slip function excellent production method delete delete delete The method according to claim 1, characterized in that the natural stone aggregate of 4 ~ 6mm diameter in the upper layer, 7 ~ 9mm aggregate in the middle layer and 9 ~ 12mm aggregate in the lower layer, rust prevention, block surface portion Manufacturing method of permeable block with excellent anti-slip and anti-slip function
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