KR100272803B1 - Method of surface treatment for pervious rammed concrete pavement - Google Patents

Abstract

The present invention relates to a method for aesthetically treating a porous compacted concrete surface layer by forming a pattern using a pattern formwork on the porous compacted concrete surface layer or engraving a desired pattern using a patterned plate.

Among these, the method of forming a pattern stone, the process of laying and compacting a base layer with porous compacted concrete; On top of the substrate formed in the electrical process, a concrete mixture made of aggregates of one or more of sand, crushed stone, crushed waste glass, which passes 70-100% in a 3 mm sieve and 0-20% in a 1 mm sieve, is mixed. Process to put into natural stone pattern formwork; It is a method of aesthetically treating the porous compacted concrete pavement surface layer comprising a; step of arranging the pattern formwork in which the concrete mixture is put on top of the base layer, curing for a certain time;

The method to inscribe a pattern on the surface of the package, the step of laying a base layer with porous compacted concrete; Placing a frame of a desired figure or pattern on the base layer of the electric step, then pruning it with a roller and curing it according to a conventional method; Removing the frame pressed by Laura in the electrical process, and putting a concrete mixture different in material and material or color of the base into the engraved portion formed by the frame to finish the surface; and including the porous compacted concrete pavement surface layer including It is an aesthetic method.

Description

Aesthetic Treatment of Porous Compacted Concrete Pavement Surface Layers

The present invention relates to an aesthetic treatment method of a porous compacted concrete surface layer, and more particularly, to form a pattern of natural stone shape using a pattern formwork on the porous compacted concrete surface layer or to engrav a desired pattern using a pattern plate It relates to a method of aesthetic treatment of the porous compacted concrete packaging surface layer.

In general, porous (or permeable) concrete uses aggregates having a coarse aggregate maximum dimension of 13 mm or 10 mm. Such porous (or permeable concrete) has aesthetic problems due to its rough surface because of its large voids. . Therefore, conventionally, to solve the aesthetic problem by coloring the surface layer in a variety of colors on the porous concrete, even when coloring the porous compacted concrete pavement, the surface remains rough, on the other hand, due to the roller compaction Because it is only flat, the artificial feeling is strong and it was impossible to feel natural beauty or natural texture.

On the other hand, as a way to solve the aesthetic problems caused by the rough surface of the porous concrete surface, the present inventors have been proposed by the present inventors fine-grained thin packaging method of the permeable concrete (Korean Patent No. 134989). The fine-grain thin-layer packing method uses a fine-grained aggregate (less than 3 mm of aggregate) on top of a base made of permeable compacted concrete, and the permeable compacted concrete surface layer is laid. Due to the relatively small size of the pores, aesthetic problems due to the size of the pores have been largely solved. However, the fine-grained thin-layer packaging method also made the surface flat with Laura, so the artificial feeling was still strong and it could not derive natural beauty or natural texture.

The present invention has been made to solve these problems of the prior art, by forming a pattern of various shapes using a pattern formwork on the porous compacted concrete surface layer, or by inserting a desired pattern using a pattern plate, porous compacted concrete It is an object to provide a method of aesthetically treating a pavement surface layer to have a natural or natural texture.

That is, the present invention is largely divided into two methods, the first method is to form a pattern of various shapes on the compacted concrete surface layer using a pattern formwork, the second method is to engrave the desired pattern on the compacted concrete surface layer using a pattern plate How to put. Hereinafter, the two methods of the present invention will be described.

In the present invention, a method of forming a pattern of various shapes on the compacted concrete surface layer using a pattern formwork is largely composed of four processes, the processes are as follows.

First process: laying and compacting base layer with porous compacted concrete.

Second process: Aggregate of one or more of sand, crushed stone, crushed waste glass that passes 70-100% in a 3 mm sieve and 0-20% in a 1 mm sieve is used as aggregate. In m3, cement: 300-600 kg / m3, water: 90-150 kg / m3 (to be slump 0-5), admixtures: a step of mixing within 4% of the amount of cement used in the form of natural stone pattern.

Third process: The process of curing the pattern formwork with the concrete mixture in the second process by arranging it over the laid and compacted base in the first process.

Fourth process: The process of removing the pattern formwork of the electrical process, spraying the resin as a surface protecting agent on the upper part and curing it for a certain time to complete the package.

In the first process, the reason for forming the base layer using the porous compacted concrete is that the porous compacted concrete before and after curing, there is little change in shrinkage and expansion, and the mixture of the upper layer is inserted into the pores formed on the surface of the base layer, Because it can be firmly settled. Therefore, the porosity of the base layer after roller compaction is required to be 7-30%. In addition, in order to have durability, the strength of the base layer is preferably 150-300 kg / cm 2 on the basis of compressive strength and 25-60 kg / cm 2 on the basis of the bending strength.

In order to form a base layer having the above-mentioned properties, cement: 200-400 kg / to 1 m3 of the aggregate maximum compaction standard, in which 60-100% of aggregates from 40 mm to 5 mm and 0-40% of aggregates of 5 mm or less are mixed. M3, water (slump equal to 0-3): 80-130 kg / m3, admixture (sensitizer): A mixture of less than 3% of the amount of cement used should be installed and compacted with a roller.

In the second process, the aggregate is composed of a mixture of one or more of sand, crushed stone, and crushed waste glass that pass 70-100% in a 3 mm sieve and 0-20% in a 1 mm sieve. In m3, cement: 300-600 kg / m3, water: 90-150 kg / m3 (to be slump 0-5), admixture: 4% or less of the amount of cement used is mixed into the pattern formwork.

In this step, although pigments may be used for coloring, if necessary, it is preferable to use those having excellent weather resistance within 10% of the amount of cement used. In addition, silica sand may be used to prevent whitening and crack generation. When silica sand is used, it is preferable to use the silica sand within 50% of the amount of cement used.

In this process, in the mixture to be added to the formwork, epoxy may be used instead of cement. When epoxy is used instead of cement, 1 part of aggregate containing at least one of natural stone, sand, crushed stone, crushed silica, and crushed stone passed 70-100% in 3 mm and 0-20% in 0.5 mm 0.03-0.3 parts by weight of epoxy is mixed and added to the pattern formwork. In the case of using epoxy instead of cement, it is preferable that the pattern form is made of a material such as polypropylene or polyethylene that does not adhere well to the epoxy so that the pattern form can be easily separated from the pattern formwork.

On the other hand, it is preferable to spray the release agent before the concrete mixture is added to the formwork so that the pattern formwork and its content patterned stone can be easily separated. In order to form various patterns on the surface of the artificial stone formed from the formwork, before spraying the release agent, 1 part by weight of white cement or gypsum: 0.5-2 parts by weight, admixture: within 4% of the amount of cement used, methanol (in order to improve dispersibility) ): 0.005-0.05 parts by weight is mixed and sprayed inside the formwork. And in order to improve durability, you may mix and use emulsion type resin as needed.

The third process is to arrange the pattern formwork in which the concrete mixture is put in the upper part of the base, and to cure it for a certain time. In this process, the pattern form in which the concrete mixture is added is arranged before the moisture on the surface of the substrate is evaporated. In order to do so, the time for laying and compacting the substrate and adding the concrete mixture to the pattern formwork must be well balanced. In other words, in order for this third process to work properly, the first and second processes in the first place must be performed at about the same time.

In order to be firmly combined with the glyphs formed in the base and formwork, it is preferable to invert the pattern formwork with the concrete mixture in the upper part before the water is evaporated after the compaction (within about 3 hours after the compaction).

In order to increase the binding force between the base layer and the glyph, it is preferable to spray water to the base layer surface within 30 kg / m 2 before water on the base layer evaporates (within about 3 hours after compaction). However, when the moisture on the surface of the substrate is almost evaporated, that is, about 3 hours or more after compaction, 0.5-2 parts by weight of cement is mixed with 1 part by weight of water, or 0.5-2 parts by weight of cement is contained by 1 part by weight of water. It is preferable to spray by mixing 0.1-2 parts by weight of the resin part and the emulsion type (based on 50% solids).

On the other hand, in the case of forming a pattern stone using epoxy instead of cement, in order to firmly bind the pattern and the base layer, after curing for 48 hours or more after compaction on the substrate made of porous compacted concrete to dry the surface and then epoxy primer 1 After spraying in the range of 1.5 kg or less on the basis of 50% of solid content per m 2, it is preferable to invert the pattern form into which the concrete mixture is placed.

The fourth step is to remove the pattern formwork arranged upside down in the electrical process, spray the resin as a surface protective agent on the upper part thereof, and then cure the package for a predetermined time to complete the package.

In this step, acrylic resins, epoxy resins, urethane resins, unsaturated resins, and the like can be used to treat the surface for improved durability after removing the formwork, and the resin may be sprayed onto the surface by spraying or paint. You can also paint with a brush. After spraying the resin, the cured product coated with artificial stone is completed by curing for a predetermined time according to a conventional method.

Hereinafter, in the present invention, a method of engraving a desired figure or pattern on the porous compacted concrete surface layer using a pattern plate will be described. This method consists of four steps, which are as follows.

First process: The process of laying the surface layer with porous compacted concrete.

Second process: The process of arranging shape frame of desired figure or pattern on the surface layer of electric process, and then squeezing it with Laura to inscribe engraved shape of shape of frame and curing according to the usual method.

The third process is to remove the frame pressed by Laura in the electrical process and to finish the surface by putting concrete mixtures with different materials and materials or colors of the surface layer into the intaglio formed by the frame.

Fourth step: After curing for a certain time with respect to the package formed in the electrical process, one of epoxy, acrylic resin, unsaturated resin or urethane solution is sprayed on the upper part, and then curing according to a conventional method.

In the first process, the reason why the surface layer is formed by using the porous compacted concrete is because the porous compacted concrete has little change in shrinkage and expansion before and after curing. The strength of the surface layer is preferably 150-300 kg / cm 2 based on compressive strength and 25-60 kg / cm 2 based on flexural strength.

In order to form the surface layer having the above-mentioned properties, cement: 200-400 kg / to 1 m3 of aggregate maximum compaction standard, which mixed 60-100% of aggregates from 40 mm to 5 mm and 0-40% of aggregates of 5 mm or less. M3, water (slump 0-3): 80-130 kg / m3, admixture (sensitizer): A mixture of not more than 3% of the amount of cement used should be installed.

The second process is to place the shape frame of the desired figure or pattern on the surface of the electric process, and then fix it with Laura and cure according to the usual method. The process of engraving the pattern intaglio.

The frame may be made of wood, plastic, iron, or rubber. In the case of general concrete, the shape of the mold may be changed or the difficulty of removing the mold due to the expansion of the volume after curing, but porous compacted concrete has such problems or difficulties because there is little expansion of the volume after curing. none.

The third process is to remove the frame pressed by Laura on the surface layer, and to finish the surface by putting concrete mixtures of different materials and materials or different colors into the engraved portion formed by the frame. What is necessary is just to add a concrete mixture to the intaglio formed on the surface layer in this process, and to process the surface by a conventional method conventionally. However, in order to distinguish it from the surface layer, it is preferable to change the material or color. The shape and design of the frame can be decided according to the purpose of the paved road or square.

The fourth process is to cure the package formed in the electrical process for a certain period of time to improve durability, after spraying one of the epoxy, acrylic resin, unsaturated resin or urethane solution on top of it, and then curing according to the conventional method It is a process. At this time, the resin is preferably sprayed using a spray, but may be painted with a paint brush.

The present invention will be described based on the following examples.

<Example 1>

The walkway of length 100m and width 3m was made. The surface layer was paved with amber artificial stone, the total paving thickness was 10 cm, the porous compacted concrete for the base was 9.2 cm, and the thickness of the amber stone artificial stone layer was 0.8 cm. The artificial stone has black spots in the shape of amber stone, and the color is general cement color and made of water impermeability.

First step: A step of laying and compacting a water-permeable porous compacted concrete.

Aggregate 100% passing through 25mm sieve and 37% passing through 5mm sieve: 1㎥ (1㎥ is 1750㎏ based on optimum compaction), cement: 280㎏ / ㎥, water: 95㎏ based on 0cm of slump / ㎥, admixture: After using delayed water reducing agent and mixing 1.4㎏ / ㎥, transport the mixture by dump truck and install it with manpower so that the level is good, and make it more than 100% of the test specimen for compressive strength test. I pledged to Laura.

Second step: preparing a formwork.

300m of pattern molds with a thickness of 0.8 cm engraved with a amber stone pattern were prepared, and the mold was sprayed with a release agent for concrete. In order to express the black-spotted pattern of the amber, a black pattern was applied on the inner surface of the formwork so that the spotted size was 2 mm or less and about 15% of the total area. The material for expressing this black pattern is water: 1 kg, white cement: 0.8 kg, and as a admixture, a high fluidizing agent: 0.016 kg of 2% of the amount of cement used, black pigment: 0.08 kg of 10% of the amount of cement used, emulsion acrylic resin : A mixture of 0.2 kg on a 50% solids basis.

3rd process: the process of putting concrete mixture into the prepared formwork.

Silica which passes 97% at 3mm and 15% at 1mm sieve: 1㎥ (1㎥ is 1720kg based on optimum compaction), cement: 380㎏ / ㎥, delayed water reducing agent as admixture: 1.9㎏ / ㎥, Water: After mixing 145 kg / m 3 on the basis of slump 0, the concrete mixture was added to the backside while gently shaking the formwork prepared in the previous process.

Step 4: Invert the mold into which the concrete mixture is put in the previous step and arrange it on the top of the porous concrete, and lightly tap the mold with a rubber hammer so that the mixture is slightly removed from the mold, and then cure it for 2 days or more by the usual method. After this was completed the formwork was removed.

5th process: Surface treatment process.

For the luster of the surface of the amber artificial stone formed by the formwork, after spraying 30 ㎏ on the basis of 50% epoxy solids on the surface and curing for a certain time to complete the road pavement with a amber stone pattern.

The compressive strength and porosity of the package completed by the above process were measured, and the appearance was observed to prepare a table as follows.

division Compressive strength (㎏ / ㎥) Porosity (%) shape For ground floor 235 9.8 - For table layer 315 8.8 Have a amber stone shape standard 150-300 7-12 Must be the same as the limit sample

As shown in the above table, the package according to the present invention is such that its compressive strength and porosity sufficiently pass the standard, and derives the feeling of amber stone when visually observing the shape of the surface layer. When treated, pedestrians could feel natural beauty or natural texture.

<Example 2>

A walkway of 100 m in length and 3 m in width was laid with porous compacted concrete with a paving thickness of 10 cm, and various floral patterns were formed on the upper part. The basic color of the package is green, and the color of the pattern portion is light red. In addition, the package was made porous but not impermeable.

First step: a step of installing a non-permeable porous compacted concrete.

Aggregate 100% passing through 25mm sieve and 37% passing through 5mm sieve: 1㎥ (1㎥ is 1750㎏ based on optimum compaction), cement: 280㎏ / ㎥, water: 95㎏ based on 0cm of slump / ㎥, admixture: After using a delayed water reducing agent and mixed 1.4 kg / ㎥ used amount, the mixture was transported by a dump truck and installed in a manpower to level.

The second step is to inscribe the intaglio of the flower shape on the surface layer by using the mold.

The flower-shaped frame was placed on the surface layer laid in the electric process, and the engraved animal shape was engraved on the surface layer by compacting with Laura on the entire layer and the frame.

The third step is to fill the concrete mixture with the intaglio formed on the surface layer.

After removing the frame pressed by Laura in the electric process, and filling the material used for the base layer with the color used in the base layer in the engraved portion formed by the frame, that is, light red-colored concrete mixture, surface treatment and curing according to the conventional method. It was.

4th process: Surface treatment process for improving durability.

In order to improve durability, 30 kg of epoxy solid content was sprayed on the surface of the package cured in the electrical process by spraying, and then cured according to a conventional method.

The compressive strength of the package completed by the above processes was 295 kg / m 3 or more, and the flower shape formed on the surface layer made the pedestrian, especially children, feel the natural texture.

The present invention has the effect of reducing the fatigue of pedestrians by deriving the natural texture by using a pattern formwork on the porous compacted concrete surface layer or by imprinting the artificial stone or pattern of the desired shape using a pattern plate. In addition, when the method of the present invention is applied, the air is shortened and the durability of the package is excellent, and thus it is economically very useful.

Claims (14)

Laying and compacting the base layer with porous compacted concrete; The aggregate is composed of a mixture of one or more of sand, crushed stone, crushed waste glass, which passes 70-100% in a 3 mm sieve and 0-20% in a 1 mm sieve, on top of the substrate formed in the electrical process. To 1 m3 of compaction standard, cement: 300-600 kg / m3, water: 90-150 kg / m3, admixture: mixing and mixing 4% or less of the amount of cement used into the pattern formwork; A step of arranging and curing the pattern formwork in which the concrete mixture is put in the second step in the first step of the laid and compacted base layer; And Removing the pattern formwork of the electric process, spraying the resin as a surface protector on the surface layer, and curing the package for a predetermined time to complete the package; Aesthetic treatment method of porous compacted concrete pavement surface layer comprising a. The method of aesthetic treatment of a porous compacted concrete pavement surface layer according to claim 1, wherein the slump of the mixture introduced into the pattern formwork is 0-5. The method for aesthetic treatment of a porous compacted concrete pavement surface layer according to claim 1, wherein in the mixture introduced into the pattern formwork, silica sand is replaced with cement within 50% of the amount of cement used. Laying and compacting the base layer with porous compacted concrete; On top of the base layer formed in the electrical process, at least one of the aggregates of at least one of natural stone, sand, crushed stone, crushed silica sand, and crushed stone, which passes 70-100% in 3 mm and 0-20% in 0.5 mm, is mixed. Mixing 0.03-0.3 parts by weight of epoxy and adding it to the pattern formwork; After curing the laid and compacted base in the first process, the surface is dried, and the epoxy primer is sprayed within 1.5 kg based on 50% of solid content per m 2, and the concrete mixture in the second process is applied on top of the base. A step of curing the input pattern dies by inverting and curing for a predetermined time; And Removing the pattern formwork of the electric process, spraying the resin as a surface protector on the surface layer, and curing the package for a predetermined time to complete the package; Aesthetic treatment method of porous compacted concrete pavement surface layer comprising a. The method of claim 4, wherein after curing the base layer cured for more than 48 hours to dry the surface, and then sprayed the epoxy primer within the range of 1.5kg based on 50% solids per 1㎡, and then reverse the pattern of the concrete mixture Aesthetic treatment method of arranging porous compacted concrete pavement surface layer. The porous compacted concrete pavement surface layer according to claim 1 or 4, wherein the porosity of the base layer is 7-30%, the strength of the base layer is 150-300 kg / cm 2 based on the compressive strength, and 25-60 kg / cm 2 based on the bending strength. Aesthetic treatment method. According to claim 1 or 4, wherein the porous compacted concrete laid on the base layer to the aggregate maximum compaction standard 1 ㎥ mixed with 60-100% aggregate from 40mm to 5mm and 0-40% aggregate less than 5mm Cement: 200-400 kg / m3, water (slump becomes 0-3): 80-130 kg / m3, admixture (reducing agent): of the porous compacted concrete pavement surface layer of less than 3% of the amount of cement Aesthetic method. The porous compact according to claim 1 or 4, wherein water is sprayed to the surface of the substrate within 30 kg / m 2 before three hours after the substrate is compacted with the Laura, and the patterned form into which the concrete mixture is placed is arranged upside down. Aesthetic method of concrete pavement surface layer. The method for aesthetic treatment of the porous compacted concrete pavement surface layer according to claim 1 or 4, wherein after 3 hours or more after the base layer is compacted with a roller, 0.5-2 parts by weight of cement is mixed and sprayed onto 1 part by weight of water. . The resin of 0.5-2 parts by weight of cement and emulsion type (based on 50% of solid content) according to claim 1 or 4, after 3 hours or more have elapsed after the base layer has been compacted with a roller. Aesthetic treatment method of porous compacted concrete pavement surface layer sprayed by mixing 2 parts by weight. Depositing a surface layer with porous compacted concrete; Placing a mold on the upper surface layer of the electrical process, then compacting it with a roller and curing it according to a conventional method; Removing the frame pressed by Laura in the electrical process, and putting a concrete mixture different in material and material or color of the base into the engraved portion formed by the frame to finish the surface; And Curing the package formed in the electrical process for a predetermined time, and then spraying one of the epoxy, acrylic resin, unsaturated resin, or urethane solution on top thereof, followed by curing according to a conventional method; Aesthetic treatment method of porous compacted concrete pavement surface layer comprising a. According to claim 11, Cement: 200-400 kg / ㎥, Water: 80 to 1 ㎥ of the aggregate maximum compaction standard mixed 60-100% of aggregates from 40 mm to 5 mm and 0-40% of aggregates of 5 mm or less -130 kg / m 3, admixture (reducing agent): Aesthetic treatment method of porous compacted concrete pavement surface layer in which a mixture containing less than 3% of the amount of cement used is deposited. The method for aesthetic treatment of the porous compacted concrete pavement surface layer according to claim 11, wherein the slump of the concrete mixture laid on the surface layer is 0-3. 12. The method for aesthetic treatment of a porous compacted concrete pavement surface layer according to claim 11, wherein the package is sprayed on top of an epoxy, acrylic resin, unsaturated resin or urethane solution and cured according to a conventional method.