KR20060099052A - Road paving concrete panel and road paving method using the same - Google Patents

Abstract

Disclosed is a road paving concrete panel and a road paving method using the same to reduce the occurrence of road cracks and to significantly shorten the air of road paving works. The concrete panel has a structure in which a shear key is formed at one edge of the concrete body along a longitudinal direction thereof, and a shear groove is formed in which the shear key of the concrete panel adjacent to the other edge is coupled. The concrete body has a longitudinal or transverse direction. A first tension member imparted with a tensile force by a pretension or posttension method is employed. In addition, the road paving method using the concrete panel is to prepare the concrete panel according to the width of the road to be paved in advance, the step of flattening the base layer of the road to be paved, and the produced concrete panel to the base layer Connecting in close contact with each other. The road paving concrete panel and the road paving method using the same paving the road by using precast concrete panel significantly shortens the construction period, thereby reducing the obstacles of vehicle traffic and reducing public expenses.

Concrete panel, pavement, shear key, tension material

Description

A concrete panel for pavement and pavement construction method using it}

1 is a perspective view showing a concrete panel of an embodiment of the present invention,

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a perspective view showing another embodiment of the present invention concrete panel,

4 is a cross-sectional view showing another embodiment of the present invention concrete panel,

5 is a schematic view for explaining a paving method using a concrete panel of the present invention embodiment,

6 is a schematic view showing another embodiment of the present invention concrete panel,

7 and 8 are a flow chart for explaining the road paving method of the present invention,

9 and 10 are cross-sectional views for explaining the road paving method of the present invention,

11 is a perspective view showing a part of a road constructed by the present invention method.

* Explanation of symbols for main parts of the drawings

10 ... concrete panel 11 ... shear key

12.Shear groove 13 ... duct

14 ... Pocket 15,16 ... 1,2 tension material

17.Drainer 18 ... Fixing agent

19 Electric wire 30 Fiber reinforcement

100 ... Foundation 110 ... Fiber Reinforced Sheet

The present invention relates to a concrete panel for road pavement and a road pavement method using the same, and more specifically, a road that can reduce the occurrence of road cracks due to the operation of the vehicle and significantly shorten the air of the road pavement work. It relates to a concrete panel for paving and a road paving method using the same.

Since general soil layer is deformed during repeated wheel loads and acts as an obstacle to driving due to pollution of roads in rainy weather, roads such as soft pavement (ascon pavement) or rigid pavement (concrete pavement) are usually constructed. .

Asphalt concrete pavement (hereinafter Ascon pavement), which is a representative method of flexible pavement, can be used to pass vehicles several hours after installation and is the most commonly applied road pavement method because there are many technical know-hows in Korea.

However, the asphalt pavement is vulnerable to high temperatures and static loads due to its characteristics, and most pavement breakages appear in the form of permanent deformation such as rutting, surface rolling, etc., and the maintenance aspects such as resurfacing every five years due to poor durability. It is known that the economy is not good.

In the case of asphalt pavement, rutting and surface rolling are often caused by heavy vehicles and stationary loads in sections or intersections where heavy vehicles pass a lot.Asphalt pavement is often covered with asphalt at regular intervals. The same problem is derived.

In order to overlay the existing asphalt pavement, white topping and ultra thin white topping are performed with concrete, but concrete pavement requires a certain amount of curing time to obtain a certain strength. Not only can it cause a great deal of impediment to the traffic, but cracks on the lower surface can also affect the upper concrete pavement in the form of reflective cracks.

Concrete pavement, which is known to be more durable and much less expensive to maintain than ascon pavement, has various patching methods for damage to the pavement surface. Bonded overlays and existing pavements newly resurfaced in concrete pavement There is an unbonded overlay between asphalt and new pavement, but as mentioned above, it takes a certain amount of curing time to achieve a certain strength. In addition, cracks in the lower surface may also affect the upper concrete pavement in the form of reflective cracks.

In addition, in the case of ascon pavement or concrete pavement to prevent the risk of accidents by laying nitrile chloride or sand when frozen in winter, this is economically disadvantageous due to labor costs and frost work time.

The present invention was created to solve the above problems, and has the following object.

First, to provide a road paving concrete panel and a road paving method using the same to significantly shorten the construction period of the road paving work.

Second, the present invention provides a road paving concrete panel with improved structure to prevent freezing of roads in winter, and a road paving method using the same.

Third, the present invention provides a road paving concrete panel with reduced strength and reinforced strength despite of heavy traffic, and a road paving method using the same.

Concrete road panel according to the present invention to achieve the above object is characterized in that the shear key protrudes along the longitudinal direction at one edge of the concrete body, the shear groove is coupled to the shear key of the concrete panel adjacent to the other edge.

In addition, the concrete panel of the present invention is reinforced with a first tension member provided with a tensile force in a pretension or post-tension method in the longitudinal or transverse direction to the concrete body.

In addition, a duct is formed to connect and install the second tension member in a post tension manner with another concrete panel connected adjacently.

In addition, the present invention paving concrete panel has a pocket in communication with the second tension material is formed on the upper surface of the concrete body, a fixing agent is poured in the pocket is fixed to the second tension material.

In addition, the electric heating wire that is generated by the supply of power to the concrete body is built in a predetermined pattern.

In addition, the cement compounded in the concrete is electrically conductive heating cement is adopted to prevent the freezing of the road in winter.

 In addition, the concrete body has a drainage hole is formed in a predetermined pattern, it is possible to prevent the accident due to the water film phenomenon while driving the vehicle to smooth drainage in the rain.

In addition, the concrete body contains at least one fiber reinforcement selected from steel fibers, glass fibers, carbon fibers, to prevent cracking to ensure stability and to extend the life.

In addition, the present invention paving concrete panel is formed with irregularities for preventing slipping on the concrete body surface.

In addition, the present invention paving concrete panel is a synthetic iron oxide, iron oxide, yellow synthetic iron, yellow synthetic iron oxide, chromium oxide, cement green, ultramarine, copper phthalocyanine blue, cobalt blue, carbon black, black synthetic iron oxide, oxidation At least one colorant selected from concrete colorants, such as titanium, is blended in a proportion to form a color concrete panel.

On the other hand, the road paving method using the present invention concrete panel to achieve the above object, the step of preparing the concrete panel according to the width of the road to be paved in advance, the step of flattening the base layer of the road to be paved and , And the step of connecting the produced concrete panel in close contact with each other to the base layer.

In the step of manufacturing the concrete panel, the shear key is formed by protruding the shear key along the longitudinal direction at one edge, and forming the shear groove to which the shear key of the concrete panel adjacent to the other edge is coupled,

Reinforcing the first tension member is applied to the concrete panel in the longitudinal or transverse direction by the pre-tension or post-tension method,

Forming a duct for installing a second tension material for connecting the concrete panel adjacent to the concrete panel side by a post-tension method, characterized in that the upper surface is formed in the pocket communicating with the second tension material.

In addition, before the step of placing the concrete panel on the base layer, characterized in that it further comprises the step of installing at least one fiber reinforcement sheet selected from the fiber reinforcement sheet, such as steel fibers, glass fibers, geosynthetic fibers in the base layer. It is done.

In addition, the step of flattening the base layer is carried out by the first surface compaction of the base layer using a screw auger and a compactor, after laying the wet stone powder or crushed stone on the base layer and repeating the compaction roller, Finishing with a cotton puddle device that can select the surface to a certain depth, characterized in that it comprises the step of screening a large crushed stone by manpower.

In addition, after the ascon or polymer-based concrete of a predetermined thickness on the upper portion of the base layer is characterized in that the surface finish with a compaction roller to flatten.

In addition, in the upper part of the base layer sand and gravel relative to water, cement ratio is relatively low, slump concrete is laid and laid with asphalt finisher equipment, characterized in that the roller voltage to flatten.

In addition, the road paving method of the present invention is characterized in that the concrete panel overlaid with asphalt or polymer-based concrete with a thin thickness or diamond grinding treatment.

In addition, the step of connecting the produced concrete panels in close contact with each other to the base layer, the first concrete panel group interconnected by the second tension material tensioned by the post-tension method, and the second tension material tensioned by the post-tension method Between the second concrete panel group connected to each other, characterized in that it further comprises the step of expansion joint through the expansion material such as steel, rubber, styrople.

According to the features of the present invention, the present invention paving concrete panel and the road paving method using the same paving the road by using a precast concrete panel to significantly shorten the construction period to reduce the obstacles of the vehicle traffic and public expense Save public relations

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The concrete paving concrete panel of the embodiment of the present invention is to be paved by assembling on the base layer of the road, it is pre-fabricated near the factory or the site.

1 and 2 show the concrete panel 100 for paving the road according to the embodiment of the present invention, which is a shear key 11 protrudes along the longitudinal direction at one edge of the concrete body, the concrete panel adjacent to the other edge Has a structure in which a shear groove 12 to which a shear key of is coupled.

In addition, the concrete body is reinforced with a first tension member 15, which is provided with a tensile force by a pretension or post tension method in the lateral direction.

By the reinforcement of the first tension member 15, the resistance to bending can be improved, so that the thickness can be relatively reduced, thereby reducing the material cost.

As a method of giving prestress, the pretension method is a method of placing concrete after applying tension to the tension member before curing the concrete, and the post tension method forms a duct for interposing the tension member. After curing the concrete to give a tension to the tension member, these methods are known methods, so detailed description thereof will be omitted.

1 and 5, the concrete panel 10 is provided with a duct 13 for connecting and installing the second tension member 16 in a post tension manner with another concrete panel connected adjacently.

In addition, a pocket 14 communicating with the second tension member 16 is formed on the upper surface of the concrete body, and a fixing agent 18 is introduced into the pocket 14 (for example, by tendon fixing and grouting). The second tension material 16 and the concrete body were to behave integrally with each other.

In addition, referring to Figure 3, by forming a drain hole 17 in the concrete body in a predetermined pattern, it is possible to prevent the accident during the driving of the vehicle by enabling rapid drainage in the rain.

On the other hand, for the smoothness of the drainage, it is possible to ensure the permeability through the large amount of pores generated by using only a coarse aggregate of a certain size without selectively using sand when mixing concrete.

By forming drainage holes or voids in the concrete panel 10 as described above, it has advantages such as traffic accident reduction, noise reduction and natural environment conservation.

In the case of noise reduction, in general, when the vehicle travels on the road, noise is generated by tires and road slip resistance of the vehicle. In the case of conventional concrete pavement, the noise is not absorbed into the package by using impermeable concrete. Permeable concrete pavements absorb most of the noise into the pavement, with the exception of some noise that is reflected by large amounts of voids. The noise absorbed into the package is reflected by the back layer of the permeable package, and the air is transmitted back to the air and is radiated back into the air.

In the case of the conservation of the natural environment, the soil environment is greatly affected by oxygen and water, so the permeable concrete pavement supplies air and moisture to the furnace due to the large amount of voids, so that the microorganisms in the soil can thrive and the groundwater Through conservation, it is effective in preventing oxygen deficiency of soil, growing roadside trees, suppressing soil temperature rise, and preventing heat island phenomenon.

On the other hand, referring to Figure 4, when molding the concrete body by mixing the fiber reinforcing material 30, such as steel fiber, glass fiber, carbon fiber, civil fiber with cement, sand, gravel, tensile strength, bending strength, The crack resistance, toughness, shear strength and impact resistance were improved.

In addition, when forming the concrete body, red synthetic iron oxide (red), red iron oxide (red), yellow synthetic iron oxide (brown), yellow synthetic iron oxide (yellow), chromium oxide (green), cement green (green), ultramarine Colorants such as (blue), copper phthalocyanine blue (blue), cobalt blue (blue), cement green (blue), purple iron oxide (purple), carbon black (black), black synthetic iron oxide (black), titanium oxide (white) It is also possible to form a color concrete panel by blending in a proportion.

In this case, according to the specific section of the road (for example, in front of the school, bridges, intersections, etc.) by installing a concrete panel 10 of a specific color so that the driver can easily identify by visual effects.

In addition, by forming irregularities (not shown) to prevent slipping on the surface of each concrete body to prevent noise and slipping to prevent pleasant driving and accidents.

The unevenness may be formed by longitudinal or transverse tying or grooving on the surface of the concrete panel 10 through longitudinal or transverse grinding, chip-screw, general aggregate or small particle aggregate exposure, and the like. can do.

The aggregate exposure method is a method of securing a sliding resistance without forming a separate macro grain on the pavement surface by removing the mortar of the surface during concrete pavement construction to expose the coarse aggregate, it is known as a very excellent noise reduction method.

The aggregate exposure method has better noise reduction effect than other surface treatment methods, and it is a method that minimizes the whine phenomenon in which pitch noise occurs in a specific frequency band in various patterns rather than regular intervals such as lateral tying. .

The aggregate exposure method is a method that provides safety to drivers by pursuing the improvement of quality of life by reducing noise and increasing the comfortable environment for the modern people and the sliding resistance of the road.

 The aggregate exposure method evenly spreads the retardant on the concrete surface laid in the formwork and immediately covers the retardant and the concrete surface with a waterproof sheet. The mortar with delayed hardening is removed with a wet or dry brush using an iron wire brush, and the concrete is protected by spraying curing powder when the aggregate is exposed to the brush.

Referring to Figure 6 showing another embodiment of the concrete panel 10 of the present invention, which has a structure in which the electric heating line 19 is generated in a predetermined pattern is generated by the supply of power to the concrete body, each concrete panel 10 On the side of the side, connection terminals for electrically connecting with the electric heating wire 19 of the adjacent panel 10 are provided.

In addition, the concrete panel was made by using an electrically conductive heating cement that generates heat when a voltage is applied by mixing a carbon-based material in the cement, it is generated by the application of power to prevent the road freezing in winter.

In addition, as shown in Figure 1, by embedding or forming a nozzle (19b) to which the snow melt is sprayed may be configured to prevent the freezing of the winter road. In this case, the snow melt is supplied from the snow melt storage tank connected through the side hole 19a to be sprayed onto the road. In the drawings of the embodiment, the positions of the nozzle 19b and the hole 19a are provided at the edge of the concrete panel, but may be installed at various positions of the concrete panel.

On the other hand, the road paving method using the concrete panel 10 of the embodiments manufactured in the factory or on-site neighborhood as described above are as follows.

Referring to Fig. 7 showing the road paving method of the new road, and Figs. 8 and 9 showing the paving method of the existing road, the step of preparing the concrete panel 10 in advance according to the width of the road to be paved, and paving Comprising the step of flattening the base layer 100 of the road to be made, and the step of connecting the produced concrete panels 10 in close contact with each other to the base layer 100.

In the field work, the production and planarization of the concrete panel 10 is substantially performed together.

The step of flattening the base layer 100 is performed after the first surface compaction of the base layer 100 using a screw auger and a compactor, and then laid wet stone powder or crushed stone on the base layer 100 and then compacted. Repeat the compaction with a roller, finish with a cotton pulp device that can pick the surface to a certain depth, and then sort the large crushed stone by manpower.

Another method for flattening the base layer 100 may be to planarize the surface by using a compaction roller after installing ascon or polymer-based concrete of a predetermined thickness on the base layer 100.

In addition, in the planarization operation, water-cemented concrete having relatively low water and cement ratios compared to sand and gravel may be poured on the top of the base layer 100, laid with asphalt finisher equipment, and smoothed by roller voltage.

After the flattening operation is completed as described above, the concrete grooves 10 of the panel 10 are coupled to the base layer 100 so that the shear grooves 12 and the shear key 11 of the panel 10 are engaged with each other. The shear key 11 and the shear groove 12 are installed in the butt portion of the two panels 10 to provide resistance to uneven settlement and shear.

In this case, as shown in FIG. 9, the concrete panels 10 are ducted to the second tension material 16 such that approximately three to four panels 10 are coupled to the unit assembly 40 and 50 to behave together. 13) and tension the second tension member 16 by post tensioning.

Each of the unit assemblies 40 and 50 are arranged to be spaced apart from each other by a second tension material 16, and the space between the unit assemblies 40 and 50, such as steel, rubber, squirrel, etc. The expansion joint (60) is implemented through the expansion material. The expansion joint 60 is constructed to counteract cracking and fracture of the connection that may occur during expansion and expansion.

The gap between the shear key 11 and the shear groove 12 can be filled with a filler such as non-shrink mortar during construction, and also a polymer system such as polyester or epoxy is installed on the connection adhesive surface of each panel 10 It is possible to prevent the adhesion of the primary panel and the penetration of foreign matter or moisture later.

In addition, a fixing agent 18 is introduced into the pockets 14 of the panels 10 to fix the second tension members 16 to be integrated with the concrete body.

On the other hand, before the step of placing the concrete panel on the base layer 100, as shown in FIG. 10, the fiber reinforcing sheet 110, such as steel fibers, glass fibers, civil fibers can be installed on the base layer 100 have.

 The construction of the fiber reinforcement sheet 110 may prevent a lot of cracking and damage of the existing pavement surface (asphalt, concrete, polymer-based concrete, etc.) to cause damage to the new pavement surface due to reflection cracking.

The fiber reinforcement sheet 110 may be attached to the concrete panel 10 to be constructed.

After connecting the concrete panel 10 to the second tensioning material 16 by the post-tension method as described above, in order to consider the flatness during running, the concrete panel 10 is overlaid with ascon or polymer-based concrete in a thin thickness. Machine or diamond grinding.

On the other hand, the drainage slope of the concrete panel, the cross-sectional shape of the curved road, the cross-sectional reduction and the cross-sectional enlargement portion, etc. may be considered depending on the road situation to be paved.

In the ground leveling work for the flattening treatment of the base layer 100, the screw auger for finishing the surface of the soil layer, the vibration compactor for firmly tightening the surface, the height can be adjusted and the finished surface Cotton pads for final face picking are used.

In addition, a mobile truss for fixing the flatness equipment, a fixing device for fixing a tractor, a truck, etc. is used during the flattening operation, and optionally, a laser target is installed for precise surface finishing, and precise flat surface finishing is performed by a laser instrument.

Referring to FIG. 11 showing some sections of the road paved by the above-described method, the first concrete panel group 100 interconnected by the second tension member 16, which is tensioned by the post tension method, and the tension by the post tension method. Between the second concrete panel group 200, which is interconnected by the second tension member 16 is to be expanded and jointed through the expansion material 60, such as steel, rubber, styrople.

Each concrete panel group includes a central tension member fixing panel 101 for fixing the second tension member 16 through the pocket 14, a base panel 102 connected to both sides of the fixing panel 101, and both edges. The fixing panel 101 and the base panel 102 are composed of a joint panel 103 for tensioning and connecting the second tension member 16.

Concrete panel and road paving method of the embodiment of the present invention as described above, as well as roads on roads and highways, as well as airports, harbors, aprons, container yards, railway freight facilities or factories, parking lots, intersections, temporary roads (roads), Applicable to prefabricated pavement such as roads around apartments and performance / exhibition facilities.

The present invention as described above is not limited to the above embodiments without departing from the spirit and scope of the present application can be practiced with a number of modifications.

Concrete road paving concrete panel of the present invention as described above and the road paving method using the same has the following advantages.

First, by adopting tension members, the bending resistance is increased to enable thinner construction and economic construction.

Second, the rigidity of the panel is increased by allowing the tension member, which is subsequently constructed by the post-tension method, to be fixed to the panel by the fixing agent.

Third, the combination of fiber reinforcement material improves tensile and bending strength, crack resistance, shear strength and impact resistance, thereby extending the life cycle of repair period.

Fourth, it is possible to reduce the occurrence of accidents in the rain by making the drainage smoothly by the formation of drain holes.

Fifth, the adoption of an electric heating wire prevents road ice during the winter and prevents accidents.

Sixth, the use of precast concrete panels shortens the air to facilitate traffic and enables economic construction.

Seventh, by making it possible to replace only the panels of cracks and broken parts, maintenance is easy.

Eighth, color concrete panels are prepared by mixing concrete colorants at a certain ratio when concrete is mixed, and concrete panels of specific colors are installed according to specific sections of roads (eg, in front of schools, bridges, intersections, etc.). It not only makes it easy to identify, but also harmonizes with the surrounding environment.

Claims (19)

The concrete panel for paving roads, characterized in that the shear key protrudes along the longitudinal direction of one side of the concrete body, the shear groove is coupled to the shear key of the concrete panel adjacent to the other edge. The concrete panel for paving roads according to claim 1, wherein the first tension member is provided with a tensile force by a pretension or a posttension method in the longitudinal or transverse direction to the concrete body. 3. The concrete panel for paving roads according to claim 2, wherein a duct is formed to connect and install the second tension member in a post tension manner with another concrete panel connected adjacently. The concrete panel for paving roads according to claim 3, wherein a pocket communicating with the second tension material is formed on an upper surface of the concrete body, and a fixing agent is poured into the pocket to fix the second tension material. The concrete panel for paving roads according to any one of claims 1 to 4, wherein an electric heating wire which is generated by supply of power to the concrete body is built in a predetermined pattern. The concrete panel for paving roads according to claim 5, wherein the cement compounded in the concrete is an electrically conductive heating cement. The concrete panel for paving roads according to any one of claims 1 to 4, wherein a drainage hole is formed in a predetermined pattern in the concrete body. The concrete panel for paving roads according to any one of claims 1 to 4, wherein the concrete body contains at least one fiber reinforcement material selected from steel fibers, glass fibers, and carbon fibers.  The concrete panel for paving roads according to any one of claims 1 to 4, wherein irregularities for preventing slipping are formed on the surface of the concrete body.   The synthetic body according to any one of claims 1 to 4, wherein the concrete body is iron oxide, iron oxide, yellow synthetic iron oxide, yellow synthetic iron oxide, chromium oxide, cement green, ultramarine, copper phthalocyanine blue, cobalt blue, carbon black, black synthetic At least one colorant selected from concrete colorants, such as iron oxide and titanium oxide, is mixed in a proportion to form a concrete panel for road paving. The method according to any one of claims 1 to 4, characterized in that the nozzle (19b) is connected to the snow melt storage tank in the concrete body and the snow melt is sprayed, to prevent freezing of the winter road. Paving concrete panels.  In the road paving method using concrete panels, A step of making the concrete panel according to the width of the road to be paved in advance; Flattening the base layer of the road to be paved, Road paving method using a concrete panel, characterized in that it comprises the step of connecting the produced concrete panels in close contact with each other.  The method of claim 12, wherein in the step of manufacturing the concrete panel, the shear key is protruded along the longitudinal direction at one edge, and the shear groove to which the shear key of the concrete panel adjacent to the other edge is coupled, Reinforcing the first tension member is applied to the concrete panel in the longitudinal or transverse direction by the pre-tension or post-tension method, Forming a duct for installing a second tension member for connecting the concrete panel adjacent to the concrete panel side by a post-tension method, the road paving method characterized in that the upper surface is formed of a pocket communicating with the second long member .  The method of claim 13, further comprising the step of installing at least one fiber reinforcement sheet selected from the fiber reinforcement sheet, such as steel fibers, glass fibers, geosynthetic fibers in the base layer prior to the step of placing the concrete panel in the base layer Road paving method characterized in that.  15. The method according to any one of claims 12 to 14, wherein the step of flattening the base layer is carried out by the first surface compaction of the base layer by using a screw auger and a compactor, and then the wet stone powder or litter is laid on the base layer. And then repeating the compaction with a compaction roller, finishing with a cotton pulp device capable of selecting a surface to a certain depth, and then screening the large crushed stone by manpower.   The road paving method according to any one of claims 12 to 14, wherein ascon or polymer-based concrete having a predetermined thickness is disposed on the base layer, and the surface pavement method is flattened by surface finishing with a compaction roller.  15. The method according to any one of claims 12 to 14, characterized in that the slump concrete having relatively low water and cement ratio to sand and gravel is poured on top of the base layer, laid with asphalt finisher equipment, and smoothed by roller voltage. Road paving method.  15. The road paving method according to any one of claims 12 to 14, wherein the concrete panel is covered with ascon or polymer-based concrete with a thin thickness or diamond grinding treatment.  The method of claim 13, wherein the step of connecting the manufactured concrete panel to the base layer in close contact with each other, Stretch material such as steel, rubber, styrople, etc. between the first concrete panel group interconnected by the second tension member tensioned by the post tension method and the second concrete panel group interconnected by the second tension member tensioned by the post tension method Road paving method, characterized in that it further comprises the step of expansion joint.

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