KR100217947B1 - Water permeable concrete paving method - Google Patents

Abstract

Using the composition of aggregate particles in concrete composition of 6 ~ 10mm or 3 ~ 5mm size and adding 2kg / ㎥ of fiber glass in addition to the existing concrete composition, grid, geofilter, sand layer, crushed stone layer, As a construction method to change or remove the layer as necessary, the rubble layer is applied and colored surface is sprayed with epoxy resin paint to perform graphic treatment, which has excellent water permeability, good drainage, reduced surface cracking, compression stress and tensile stress. Increasingly, the surface becomes colored water-permeable concrete of various colors.

Description

Pitched concrete construction method

1 is a cross-sectional view of the permeable concrete construction layer according to the first embodiment of the present invention.

2 is a cross-sectional view of the permeable concrete construction layer according to a second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: concrete 2: grid

3: sand 4: underground filter

5: ground 6: crushed stone

6 ': rubble 7: merit

8 joint

The present invention relates to a color-permeable concrete construction method for the purpose of improving the aesthetic appearance of the pavement surface by providing excellent water permeability and drainage, suppression of surface cracks, giving a variety of surface patterns.

The maximum particle size of the aggregate that can be used for concrete is 13 mm. This aggregate is large for aggregate. Concrete using such aggregates has a rough surface and low strength. On the other hand, when concrete is constructed from fine aggregates, the strength is increased and the surface of the concrete is smooth, but the air permeability is reduced and the permeability is lowered. In this regard, the proper selection of aggregate particle size is important when constructing permeable concrete, and cement mixing ratio is important. However, this method may be suitable for general cement concrete, but not for permeable concrete. Pitched concrete uses little aggregate, so the surface area of the aggregate is relatively small, and therefore less cement is required than general concrete.

On the other hand, because the reinforcement of the general metal system could not be used due to the oxidation due to the permeability, even if a defect is found in the permeable concrete construction layer, the reinforcement work was not considered even if the reinforcement work had no effect. Reinforcement with expensive stainless steel plate is inevitable to increase the construction cost.

However, considering the characteristics of permeable concrete, reinforcement work for deflection of tensile stress is necessary.

Pitched concrete is primarily intended to allow rainwater to pass through and temporarily drain water from pavement layers, including roadbeds, to gradually penetrate into the ground, and to allow for natural treatment by evaporation. The problem is that if the rainwater circulation is delayed depending on the weather and the conditions of the road, the ground becomes soft, especially during the winter season, which is likely to freeze the ground, resulting in uplift of the road surface. It will develop even further. In addition, irregular ridges and ground subsidence due to thawing can cause pavement cracks, which greatly affect the permeable concrete layer.

In addition, conventional permeable concrete is monochromatic, so there is no monotonous pair. In order to compensate for this, there is a tendency to give a pattern, but there is a tendency to be reluctant to give a pattern as another problem of rising construction cost arises.

The present invention proposes a permeable concrete construction method that focuses on the improvement of permeability and drainage, suppression of surface cracking, and diversification of colors by improving the construction problems of the conventional permeable concrete as described above.

The present invention simplifies the particle size of the aggregate, and a mixture of glass fiber in a certain ratio with respect to the aggregate and cement as a permeable concrete composition, and the surface is laid out at predetermined intervals along the horizontal and vertical directions on the flat surface Perforated concrete pipes are laid, and the ground including the perforated pipes is crushed to form a crushed stone layer, underground filters are laid on it, concrete is laid on the underground filters, and there is a method for constructing a permeable concrete.

The present invention further simplifies the particle size of the aggregates, and mixes the glass fiber in a proportion to the aggregates and cement as a permeable concrete composition, the ground being high in the center and along the transverse and longitudinal directions on the ground inclined to the edges. Perforated concrete pipes are laid at predetermined intervals, and rubble is laid on the ground including the perforated pipes, the ground filter is laid on the rubble layer, and concrete is laid on the ground filter, but there is provided a permeable concrete construction method.

Next, the construction method of this invention is demonstrated concretely.

The particle size of the aggregate for permeable concrete is simplified to 6-10 mm. The aggregate and cement are mixed with 2 kg / m 3 of glass fiber to form a permeable concrete composition.

Using the permeable concrete composition will be described a method for constructing colored permeable concrete that is excellent in permeability and drainage, and also increases in strength.

Construction Method 1.

The ground 5 is flattened and the perforated pipe 7 is laid in a valley every 5-10 m intervals along the transverse and longitudinal directions. The perforated tube 7 is a tube in which a plurality of small holes are drilled in the main surface.

A crushed stone layer (6) containing crushed stone is laid on the ground (5) including the perforated pipe (7) to form a crushed stone layer and the underground filter (4) is placed thereon.

Sand (3) is laid on the underground filter (4) to form a layer of sand, and the concrete (1) is laid thereon, and a grid (2. grid) is embedded therein.

Concrete 1 paves with twice. In other words, the concrete corresponding to two-thirds of the total laying thickness is laid first, the grid 2 is installed thereon, and the remaining one-third thick concrete is even laid. The joints 8 are replaced by gauging or embedding joints.

As a finishing work, a colored epoxy resin paint is applied to the surface of the concrete 1 by spraying to give a pattern.

Construction method 2.

The ground 5 is flattened and compacted, and the perforated pipe 7 is recessed by making grooves at intervals of 5 to 10 m along the horizontal and longitudinal directions.

The rubble 6 'is thickly laid on the ground 5 including the perforated pipe 7 to form a rubble layer and the underground filter 4 is laid thereon. Rubble 6 'refers to aggregate in which the crushed stone 6 is mixed with crushed stone having a smaller or larger particle size. The underground filter 4 is also called a gio filter in other words.

Sand (3) is laid on the underground filter (4) to form a sand layer, and the concrete (1) is laid on the sand layer, and the grid (2) is embedded therein. Concrete 1 paves with twice. In other words, the concrete corresponding to two-thirds of the total laying thickness is laid first, the grid 2 is installed thereon, and the remaining one-third thick concrete is even laid. The joints 8 are replaced by gauging or embedding joints. Then, the colored epoxy resin paint on the surface of the concrete (1) to finish by giving a pattern by spraying.

×10^-1㎝/sec 에 이른다. 뿐만아니라 골재의 표면적이 작아서 시멘트도 절감되고, 단위수량도 비례적으로 감소되므로 물과 시멘트와의 혼합비율이 줄어 들어서 강도가 증대된다.As such, as the particle size of the aggregate is simplified, the porosity is high, and the permeability is 1

It leads to x10 <^-1> cm / sec. In addition, since the surface area of the aggregate is small, the cement is also reduced, and the unit quantity is also proportionally reduced, so that the mixing ratio of water and cement is reduced, thereby increasing the strength.

In the present invention, the result of reducing the water / cement ratio, that is, the W / C ratio and the concrete strength by simplifying the particle size of the aggregate is shown below.

Aggregate is in saturated state with dry surface.

2kg / ㎥ of glass fiber was added to increase surface crack by 61%, compressive strength by 7%, and tensile strength by 20%. In addition, the price is cheaper than conventional pitched concrete. In addition, the concrete layer has the same shrinkage and expansion rate as that of concrete, and the strength of the concrete layer is further increased as a grid having chemical resistance is embedded.

By coating the surface of the concrete with colored epoxy resin paint, various patterns can be expressed, and thus, a beautiful aesthetic with the previously monotonous concrete construction surface can be impressed.

Claims (5)

The particle size of the aggregate is simplified to 6 to 10 mm, and 2 kg / m 3 of glass fiber is mixed with this aggregate and cement as the permeable concrete composition. The perforated pipes 7 are recessed at intervals of 10 m, and the ground surface 5 including the perforated pipes 7 is laid with crushed stone 6 and the ground filter 4 is placed thereon. Permeable concrete construction method, characterized in that to lay a grid (2) therein. The method of claim 1, wherein the grid (2) is embedded in 2/3 thickness of the concrete (1). The method of claim 1, wherein the sand (3) is laid on the underground filter (4). A method according to claim 1, wherein a joint (8) is provided on the concrete above the grid (2). The method of claim 1, wherein the crushed stone (6) is rubble (6 ').

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