Thermally conductive concrete powder crusher, thermally conductive concrete composition, freezing warning system for heating road pavement, freezing warning method for heating road pavement, heating road pavement structure, Anti-freezing block and staircase structure using same

Abstract

In the present invention, disclosed are a thermally conductive concrete powder crusher, a thermally conductive concrete composition, a freezing warning system for a heating road pavement, a freezing warning method, an anti-freezing block, and a staircase structure using same. The thermally conductive concrete powder crusher according to an embodiment of the present invention comprises: a crusher body which has an accommodation space formed therein; a hopper which supplies lumps of concrete from the upper portion of the crusher body; a crushing portion which is accommodated in the crusher body and crushes the lumps of concrete supplied through the hopper; and a discharge portion through which the lumps of concrete crushed through the crushing portion are fallen and discharged.

Description

Thermally conductive concrete powder crusher, thermally conductive concrete composition, ice warning system for heated road pavement, ice warning method for heated road pavement, heated road pavement structure, anti-icing block and stair structure using the same

[0001] The present invention relates to a thermally conductive concrete powder crusher, a thermally conductive concrete composition, an ice warning system for a heated road pavement, an ice warning method, an anti-icing block, and a stair structure using the same.

[0002] In winter, black ice forms on roads, causing loss of life and property damage. To prevent this, calcium chloride is sprayed on roads to remove ice. However, this causes vehicle corrosion and deterioration of concrete roads. Technologies are being developed to prevent black ice by installing heating elements inside the road pavement in areas prone to black ice, as well as to provide advance warning to pedestrians in icy areas.

[0003] However, conventional heated pavement and warning systems have the following problems. Conventional warning systems are inefficient because they are designed without regard to the characteristics of heated pavement. Furthermore, even when the heating element is turned on, it takes time for the surface temperature of the pavement to rise above 0℃, a characteristic that conventional warning systems fail to account for. Furthermore, conventional warning systems rely solely on weather data to make decisions, often maintaining a warning state even when the freezing has been relieved by the normal operation of the heating element, making them inefficient.

[0004] Conventional thermally conductive concrete compositions lack excellent watertightness, allowing moisture and chlorides to penetrate the pavement, reducing thermal conductivity. This hinders the effective functioning of thermally conductive road pavements, which require significant effort and expense. Furthermore, conventional concrete crushing processes are time-consuming and inefficient. Furthermore, impurities cannot be effectively removed during the crushing process, resulting in uneven composition and poor quality.

[0005] An embodiment of the present invention provides a device capable of crushing thermally conductive concrete powder to supply thermally conductive concrete used in a thermally conductive road pavement in order to overcome the problems of the above-mentioned prior art, and is configured and efficient to suit the characteristics of the thermally conductive road pavement, and is capable of preventing safety accidents by preventing freezing of a stair structure in winter, and increases the watertightness of the thermally conductive concrete composition so that the thermally conductive road pavement in which a heating element is embedded can function normally, a thermally conductive concrete composition, an ice warning system for a thermally conductive road pavement, an ice warning method, an anti-freezing block, and a stair structure using the same.

[0006] According to one aspect of the present invention, there is provided a crusher body having an accommodation space formed therein; a hopper for supplying concrete lumps from an upper portion of the crusher body; a crushing unit that is accommodated inside the crusher body and performs a milling process for crushing the concrete lumps supplied through the hopper to crush them into concrete powder; and a discharge unit through which the concrete lumps crushed through the crushing unit are dropped and discharged; wherein the crushing unit includes a first crushing unit including a plurality of first rolls; and a second crushing unit located at a front lower side of the first crushing unit and including a plurality of second rolls.

[0007] According to another aspect of the present invention, there is provided a system for warning a pedestrian of whether a road pavement is frozen, wherein a heating unit is embedded in the lower part of a pavement body including concrete powder crushed by a thermally conductive concrete powder crusher, the system comprising: an information collection unit for collecting freezing determination information that serves as a basis for determining whether the road pavement is frozen; an freezing prediction unit for comparing freezing occurrence conditions with the freezing determination information to predict the occurrence of freezing on the road pavement; a heating control unit for controlling on or off of the heating unit according to a prediction result of the freezing prediction unit; a current freezing determination unit for determining whether the road pavement is frozen at the present time when the heating unit is in an on state; a thermal imaging camera inspection unit for inspecting a determination result of the current freezing determination unit based on information from a thermal imaging camera photographing the surface of the road pavement; and a warning control unit for issuing or releasing a warning to a pedestrian according to an inspection result of the thermal imaging camera information determination unit.

[0008] The thermally conductive concrete powder crusher, thermally conductive concrete composition, freezing warning system for thermal road pavement, freezing warning method, freezing prevention block and stair structure using the same according to the present invention have the following effects.

[0009] First, we propose an efficient and efficient ice warning system for heated road pavement that is suitable for the characteristics of heated road pavement.

[0010] Second, we propose an anti-freeze block and a stair structure using the same to prevent safety accidents by preventing freezing of stair structures in winter.

[0011] Third, a thermally conductive concrete composition for road pavement with improved watertightness is proposed, which enables a thermally conductive road pavement with embedded heating elements to function properly by increasing the watertightness of the thermally conductive concrete composition.

[0012] Fourth, the present invention has the advantage of excellent overall efficiency and quality.

[0013] Fifth, it can reduce overall costs by providing excellent efficiency and quality.

[0014] Sixth, according to the present invention, the environment can be protected in an environmentally friendly manner.

[0015] FIG. 1 is a perspective view of a thermally conductive concrete powder crusher according to one embodiment of the present invention.

[0016] Figure 2 is a side schematic diagram of a thermally conductive concrete powder crusher according to one embodiment of the present invention.

[0017] Figure 3 is a schematic diagram schematically showing the internal structure of a thermally conductive concrete powder crusher according to one embodiment of the present invention.

[0018] FIG. 4 is a schematic diagram schematically showing a first crushing section of a thermally conductive concrete powder crusher according to one embodiment of the present invention.

[0019] FIG. 5 is a schematic diagram schematically showing a second crushing unit of a thermally conductive concrete powder crusher according to one embodiment of the present invention.

[0020] Figure 6 is a perspective view of a road pavement structure according to one embodiment of the present invention.

[0021] Figure 7 is a longitudinal cross-sectional schematic diagram of a road pavement structure according to one embodiment of the present invention.

[0022] Figure 8 is a cross-sectional schematic diagram of a road pavement structure according to one embodiment of the present invention.

[0023] Figure 9 is a configuration diagram of an ice warning system according to one embodiment of the present invention.

[0024] Figure 10 is a block diagram of a freezing warning method according to one embodiment of the present invention.

[0025] Referring to FIGS. 1 to 5 together, a thermally conductive concrete powder crusher (1) according to one embodiment of the present invention is configured to include a crusher body (2), a hopper (3), a crushing unit (4), and a discharge unit (5).

[0026] The crusher body (2) has a rectangular parallelepiped shape and an accommodation space formed therein. The crusher body (2) is provided with a stepped inclined portion (2-1) inside. A hopper (3) is provided on one side of the upper portion of the crusher body (2) to supply concrete lumps into the inner space of the body (2) downward. A crushing unit (4) is provided inside the crusher body (2) and performs a milling process of crushing concrete lumps supplied through the hopper (3) to provide thermally conductive concrete powder. The crushing unit (4) is configured to include a first crushing unit (4-1) including a plurality of first rolls (4-11) and a second crushing unit (4-2) located at the front lower side of the first crushing unit (4-1) and including a plurality of second rolls (4-21).

[0027] The first roll (4-11) and the second roll (4-21) have a cylindrical shape and are provided with a first gear (4-12) and a second gear (4-22) on one side, respectively. The first roll (4-11) and the second roll (4-21) rotate when the first gear (4-12) and the second gear (4-22) rotate, thereby crushing the concrete lump. The crushing unit (4) may be provided with a plurality of blade members so that the milling process for crushing the thermally conductive concrete lump can be easily performed. In addition, it is preferable that a plurality of blade members be provided on the outer circumferences of the plurality of first rolls (4-11) and the second roll (4-21) so that they are spaced apart from each other so as to intersect each other, so that the milling process for crushing the thermally conductive concrete lump can be easily performed.

[0028] The number of the first roll (4-11) of the first crushing unit (4-1) and the second roll (4-21) of the second crushing unit (4-2) can be added or adjusted in size depending on the size and quantity of the concrete lump. In addition, a crushing unit composed of multiple rolls can be added in front and below the first roll (4-11) of the first crushing unit (4-1) and the second roll (4-21) of the second crushing unit (4-2) to crush smaller concrete lumps. The discharge unit (5) moves and discharges the crushed concrete powder through the crushing unit (4). In addition, the discharge unit (5) may further include a conveyor belt that moves in a circular manner to transport the concrete powder. A thermally conductive concrete powder crusher (1) according to one embodiment of the present invention is configured to further include a driving unit (6) that provides a driving force to drive the crushing unit (4).

[0029] The driving unit (6) comprises a first driving unit (6-1) that drives a plurality of first rolls (4-11) of the first crushing unit (4-1) and a second driving unit (6-2) that drives a plurality of second rolls (4-21) of the second crushing unit (4-2). The first driving unit (6-1) drives the plurality of first rolls (4-11) through the first gear (4-12) of the first crushing unit (4-1) by the first driving gear (6-11). The power of the first driving unit (6-1) is transmitted through the first driving gear (6-11), and a plurality of gears that transmit the power may be further included. The second driving unit (6-2) drives a plurality of second rolls (4-21) through the second gear (4-22) of the second crushing unit (4-2) by the second driving gear (6-21). The power of the second driving unit (6-2) is transmitted through the second driving gear (6-21), and a plurality of gears transmitting the power may be further included. The first driving unit (6-1) rotates at a lower speed than the second driving unit (6-2) to crush concrete lumps having larger particles. The diameter of the second roll (4-21) of the second crushing unit (4-2) is configured to be smaller than the diameter of the first roll (4-11) of the first crushing unit (4-1), so as to crush concrete lumps having a smaller size than the concrete lumps crushed by the first crushing unit (4-1). In the present invention, the diameter of the second roll (4-21) of the second crushing unit (4-2) is smaller than the diameter of the first roll (4-11) of the first crushing unit (4-1), so that the gap between the plurality of second rolls (4-21) is smaller than the gap between the plurality of first rolls (4-11), thereby crushing concrete lumps of smaller size.

[0030] The crushing unit (4) is configured to include a first crushing unit (4-1) for crushing concrete lumps having larger particles, and a second crushing unit (4-2) located at the front lower side of the first crushing unit (4-1) for crushing concrete lumps having smaller particles. The first driving unit (6-1) of the driving unit (6) operates a plurality of first rolls (4-11) via the first gear (4-12) of the first crushing unit (4-1) to crush concrete lumps having larger particles than the second crushing unit (4-2).

[0031] The second driving unit (6-2) of the driving unit (6) operates a plurality of second rolls (4-21) via the second gear (4-22) of the second crushing unit (4-2) to crush concrete lumps smaller than those of the first crushing unit (4-1). In addition, the concrete lumps crushed and moved in the first crushing unit (4-1) are also crushed. Concrete powder crushed in the crushing unit (4) is discharged through the discharge unit (5).

[0032] As illustrated in FIGS. 1 to 13, the present invention relates to a system for warning a pedestrian (driver) about whether a road pavement (100) is frozen, based on a heating road pavement (100) having a heating unit (120) embedded in the lower portion of a pavement (110). This system is basically composed of an information collection unit (10), an ice prediction unit (20), a heat control unit (30), a current ice determination unit (40), a thermal imaging camera inspection unit (45), and a warning control unit (50). The information collection unit (10) collects ice determination information that serves as the basis for determining whether the road pavement (100) is frozen, and may be composed of a sensor information collection unit (11) and a weather information collection unit (12). The sensor information collection unit (11) collects ice determination information from sensors installed to determine the temperature, humidity, and snow conditions of the road pavement (100). The Korea Meteorological Administration's information collection department (12) collects freezing judgment information from the Korea Meteorological Administration's information.

[0033] The freezing prediction unit (20) compares the freezing occurrence conditions with the above freezing judgment information to predict the occurrence of freezing on the road pavement (100). The above freezing occurrence conditions can be set to cases where the temperature of the surface of the road pavement (100) is 0℃ or lower and the humidity is 95% or higher, etc. That is, when the freezing occurrence conditions and the freezing judgment information are compared and freezing occurrence is predicted, the heating unit (120) is turned on, and otherwise, it is maintained in the off state. The current freezing judgment unit (40) determines whether the road pavement (100) is frozen at the current point in time, assuming that the heating unit (120) is in the on state, and may be configured to specifically include a road pavement heating time judgment unit (41), an ice relief time judgment unit (42), and a comparison judgment unit (43). The road pavement heating time determination unit (41) determines the road pavement heating time, which is the time required for the surface temperature of the road pavement (100) to become 0℃ or higher after the heating unit (120) is turned on. Since the road pavement heating time is affected by the temperature of the heating unit (120), the thermal conductivity of the pavement (110), the external environment (temperature, humidity, wind), etc., it is desirable to comprehensively consider these and set the time. The de-icing time determination unit (42) determines the de-icing time, which is the time required for the ice formed on the surface of the road pavement (100) to be removed after the surface temperature of the road pavement (100) becomes 0℃ or higher. Since the de-icing time is affected by the external environment (temperature, humidity, wind, etc.), it is desirable to comprehensively consider these and set the time. The comparison judgment unit (43) compares the time elapsed since the heating unit (120) was turned on and the total time required for road pavement heating and ice removal to determine whether the road pavement (100) is frozen at the present time.That is, if the current point in time is the time when the total time required for road pavement heating and the time required for de-icing has elapsed, it is determined that the de-icing of the road pavement (100) has been relieved, and if the time has not yet elapsed, it is determined that the de-icing of the road pavement (100) has not been relieved.

[0034] The thermal imaging camera inspection unit (45) inspects the judgment result of the current freezing judgment unit (40) based on information from the thermal imaging camera that photographs the surface of the road pavement (100).

[0035] Although it is not possible to clearly determine whether the surface of the road pavement (100) is frozen by the image captured by the thermal imaging camera, the difference between the temperature of the surface of the road pavement (100) and the surrounding temperature after the heating unit (120) is turned on can be confirmed, and thus the judgment result of the current freezing judgment unit (40) can be inspected based on this.

[0036] The warning control unit (50) issues or releases a warning to a pedestrian based on the inspection results of the thermal imaging camera information determination unit. That is, if it is determined that the ice on the road pavement (100) has not been removed despite the heating unit (120) being turned on, a warning is issued, and if it is determined that the ice on the road pavement (100) has been removed, the warning is released. The warning control unit (50) may be configured to include a warning issuing unit (51) and a warning release unit (52).

[0037] The warning issuing unit (51) issues an ice warning to pedestrians when it is determined that the road pavement (100) is currently in an ice state based on the judgment result of the current ice judgment unit (40) and the inspection result of the thermal imaging camera information judgment unit.

[0038] The warning release unit (52) releases the ice warning for pedestrians when it is determined that the road pavement (100) is not in an ice state at the present time based on the judgment result of the current ice judgment unit (40) and the inspection result of the thermal imaging camera information judgment unit.

[0039] The thermally conductive concrete powder crusher, thermally conductive concrete composition, freezing warning system for thermal road pavement, freezing warning method, freezing prevention block and stair structure using the same according to the present invention are configured to suit the characteristics of thermal road pavement and present an efficient freezing warning system for thermal road pavement.

Claims

1. A shredder body with a receiving space formed inside; A hopper for supplying concrete lumps from the upper part of the crusher body; A crushing unit that is accommodated inside the crusher body and performs a milling process to crush the concrete lump supplied through the hopper into concrete powder; and A discharge unit through which the concrete lump crushed through the crushing unit is dropped and discharged; The above shredding part, a first shredding section comprising a plurality of first rolls; and A system for warning a pedestrian of the presence of freezing of a road pavement, wherein a heating element is embedded in the lower part of a pavement body containing concrete powder crushed by a thermally conductive concrete powder crusher, the second crushing element being located at the front lower side of the first crushing element and including a plurality of second rolls; An information collection unit that collects ice determination information that serves as the basis for determining whether the above road pavement is frozen; An ice prediction unit that compares the ice occurrence conditions and the above-mentioned ice judgment information to predict the occurrence of ice on the road pavement; A heating control unit that controls the on or off of the heating unit according to the prediction result of the above freezing prediction unit; When the above heating unit is in the on state, a current freezing determination unit that determines whether the road pavement is frozen at the present time; A thermal imaging camera inspection unit that inspects the judgment result of the current freezing judgment unit based on information from a thermal imaging camera that photographs the surface of the road pavement; and A warning control unit that issues or releases a warning to a passerby based on the inspection results of the thermal imaging camera information judgment unit; including, The above freezing prediction unit is composed of a data storage unit and an algorithm calculation unit, and the algorithm calculation unit updates standard data and newly acquired data through a CNN (Convolutional Neural Network) operation algorithm so that it can predict the point in time when freezing begins and issue an alarm even in the event of a network failure or sensor failure. The above data storage unit automatically stores the time at which the above occurrence conditions are satisfied by recording it in units of day, month, hour, and minute, when the temperature of the surface of the road pavement is 0℃ or lower and the humidity is 95% or higher as the occurrence conditions of freezing. A road pavement freezing warning system using a thermal imaging camera, characterized in that existing data on the road pavement condition stored in the above data storage unit is stored as standard data, and newly acquired data on the road pavement condition is stored as new data, and the condition of the road pavement surface is converted into data including all data on the condition of the road pavement, such as an image by information from a thermal imaging camera or surface temperature and humidity.

2. A shredder body with a receiving space formed inside; A hopper for supplying concrete lumps from the upper part of the crusher body; A crushing unit that is accommodated inside the crusher body and performs a milling process to crush the supplied concrete lumps into concrete powder; A discharge section through which the concrete chunks crushed through the crushing section are dropped and discharged; and Further comprising a driving unit that provides driving force for driving the above crushing unit, The above driving part, A first driving unit for driving a plurality of first rolls of the first crushing unit; and A second driving unit for driving a plurality of second rolls of the second crushing unit; A system for warning pedestrians about the freezing of road pavement, in which a heating element is embedded in the lower part of a pavement containing concrete powder crushed by a thermally conductive concrete powder crusher having a sloped portion inclined in a step shape from the hopper to the discharge portion inside the crusher body, An information collection unit that collects ice determination information that serves as the basis for determining whether the above road pavement is frozen; An ice prediction unit that compares the ice occurrence conditions and the above-mentioned ice judgment information to predict the occurrence of ice on the road pavement; A heating control unit that controls the on or off of the heating unit according to the prediction result of the above freezing prediction unit; When the above heating unit is in the on state, a current freezing determination unit that determines whether the road pavement is frozen at the present time; A thermal imaging camera inspection unit that inspects the judgment result of the current freezing judgment unit based on information from a thermal imaging camera that photographs the surface of the road pavement; and A warning control unit that issues or releases a warning to a passerby based on the inspection results of the thermal imaging camera information judgment unit; including, The above freezing prediction unit is composed of a data storage unit and an algorithm calculation unit, and the algorithm calculation unit updates standard data and newly acquired data through a CNN (Convolutional Neural Network) operation algorithm so that it can predict the point in time when freezing begins and issue an alarm even in the event of a network failure or sensor failure. The above data storage unit automatically stores the time at which the above occurrence conditions are satisfied by recording it in units of day, month, hour, and minute, when the temperature of the surface of the road pavement is 0℃ or lower and the humidity is 95% or higher as the occurrence conditions of freezing. A road pavement freezing warning system using a thermal imaging camera, characterized in that existing data on the road pavement condition stored in the above data storage unit is stored as standard data, and newly acquired data on the road pavement condition is stored as new data, and the condition of the road pavement surface is converted into data including all data on the condition of the road pavement, such as an image by information from a thermal imaging camera or surface temperature and humidity.

3. In paragraph 1 or 2, The above thermal imaging camera inspection unit, The present invention is characterized in that the difference in temperature between the surface of the road pavement and the surrounding temperature after the heating unit is turned on is confirmed by the image captured by the thermal imaging camera, and the judgment result of the current freezing judgment unit is inspected. A thermal imaging camera-based ice warning system for heated road pavements.

4. In paragraph 1 or 2, The above information collection department, A thermal road pavement icing warning system using a thermal imaging camera, characterized in that it includes a sensor information collection unit that collects icing judgment information from a sensor installed to determine the temperature, humidity, and snow conditions of the road pavement.

5. In paragraph 1 or 2, The above information collection department, A thermal road pavement icing warning system using a thermal imaging camera, characterized in that it includes a meteorological information collection unit that collects the above-mentioned icing judgment information from the information of the meteorological agency.

6. In paragraph 1 or 2, The above freezing prediction section, A road pavement freezing warning system using a thermal imaging camera, characterized in that the freezing occurrence condition is set to be a case where the temperature of the road pavement surface is 0℃ or lower and the humidity is 95% or higher.

7. In paragraph 1 or 2, The above freezing judgment unit at this point in time is, A road pavement heating time determination unit that determines the road pavement heating time, which is the time required for the temperature of the surface of the road pavement to become 0℃ or higher after the above heating unit is turned on; An ice melting time determination unit that determines the time required for ice formed on the surface of the road pavement to melt after the temperature of the surface of the road pavement becomes 0℃ or higher; and A heating road pavement freezing warning system using a thermal imaging camera, characterized in that it includes a comparison judgment unit that compares the time elapsed up to the present point in time with the total time required for heating the road pavement and the time required for de-icing, and determines whether the road pavement is frozen at the present point in time after the heating unit is turned on.

8. In paragraph 1 or 2, The above warning control unit, If the road pavement is judged to be in an icy state at the present time based on the judgment result of the above-mentioned current icing judgment unit, a warning issuing unit that issues an icing warning to pedestrians; and A road pavement ice warning system using a thermal imaging camera, characterized in that it includes a warning release unit that releases an ice warning to a pedestrian when it is determined that the road pavement is not in an ice state at the present time based on the judgment result of the current ice judgment unit.

9. A warning method using a warning system according to either of paragraphs 1 and 2, An information collection step for collecting ice determination information that serves as the basis for determining whether the above road pavement is frozen; An ice prediction step for predicting the occurrence of ice on the road pavement by comparing the ice occurrence conditions with the above-mentioned ice judgment information; A heating step for turning on the heating unit when freezing of the road pavement is predicted; A current freezing judgment step for judging whether the road pavement is frozen at the present time, assuming that the heating unit is in a warm state; An inspection step for inspecting the current freezing judgment result based on information from a thermal imaging camera photographing the surface of the road pavement; and A method for warning of freezing of a heated road pavement, characterized in that it includes a warning issuing step for issuing an icing warning to a pedestrian if the road pavement is judged and inspected to be in an icy state at the present time, regardless of the on state of the heating unit.

10. In paragraph 9, After the above freezing prediction step, A method for warning of freezing of a heated road pavement, characterized by including a heating release step for turning off the heating unit when freezing of the road pavement is not predicted.

11. In paragraph 9, After the above fever stage, A method for warning of freezing of a heated road pavement, characterized in that it includes a warning release step for releasing an icing warning to a pedestrian when it is determined that the road pavement is not in an icy state at the present time due to the on state of the heating unit.

12. A heating road pavement structure used in the warning system of either paragraph 1 or paragraph 2, The pavement formed on the ground by a thermally conductive concrete composition; and Including the heating part embedded inside the above packaging body; The burial depth (H) of the above heating part is A heating road pavement structure characterized in that damage due to vehicle load is prevented and the temperature of the upper surface of the pavement is deep enough to be visible due to the generated heat.

13. A thermally conductive concrete composition for road pavement with improved watertightness of the heat-generating road pavement structure according to Article 12, 14-17 wt% cement; Silicon carbide (SiC) 28-32 wt%; Fine aggregate 1-1.75 wt%; 40-42 wt% coarse aggregate: A thermally conductive concrete composition characterized by containing 5 to 10 wt% of water.

14. In paragraph 13, A thermally conductive concrete composition for road paving with improved watertightness characterized by additionally mixing 3 to 5 wt% of polysilicon sludge.

15. In paragraph 13, A thermally conductive concrete composition for road paving with improved watertightness characterized by additionally containing 2 to 4 wt% of copper powder.

16. In paragraph 13, A thermally conductive concrete composition for road paving with improved watertightness characterized by additionally mixing 1.5 to 2 wt% of graphite.

17. In paragraph 13, A thermally conductive concrete composition for road paving with improved watertightness characterized by additionally mixing 0.05 to 0.1 wt% of a fluidizing agent.

18. A thermally conductive concrete composition for road pavement with improved watertightness of the heat-generating road pavement structure according to Article 12, 17-20 wt% cement; Silicon carbide (SiC) 15-20 wt%; 15-20 wt% fine aggregate; Contains 42 to 46 wt% of coarse aggregate; The water-cement ratio is 35 to 40, A thermally conductive concrete composition for road paving with improved watertightness, characterized in that 2 to 4 parts by weight of PVAc polymer is mixed with 100 parts by weight of the above concrete composition.

19. In paragraph 18, 0.5 to 2 wt% of copper powder is additionally mixed, A thermally conductive concrete composition for road paving with improved watertightness, characterized in that 0.5 to 2 parts by weight of a fluidizing polymer is additionally mixed relative to 100 parts by weight of the above concrete composition.

20. As an anti-icing block manufactured by the precast method, A heating element that generates heat by the supply of power; An upper heat-conducting portion formed on the upper part of the heating element by a heat-conducting mortar made of a heat-conducting concrete composition according to Article 13; and An anti-freezing block characterized by including a lower protective part formed at the lower part of the heating element by mortar.

21. In paragraph 20, An anti-freezing block characterized in that the above thermally conductive mortar further comprises one of ground blast furnace slag, fly ash, or a mixture thereof.

22. In paragraph 20, An anti-freezing block characterized in that the lower protection part is formed by mortar having lower thermal conductivity than the thermally conductive mortar.

23. In paragraph 22, An anti-freezing block characterized in that the lower protection part is made of lightweight mortar.

24. In paragraph 23, An anti-freezing block characterized in that the lower protection part comprises cement, granulated blast furnace slag, zeolite, and cork.

25. In paragraph 24, The above lower protection part is an anti-freezing block characterized by not containing aggregate.

26. A stair structure using anti-freezing blocks according to Article 20, A body having multiple steps; The anti-icing block installed on the upper surface of all or part of the above plurality of steps; and A stair structure characterized by including a wire connected to a power supply unit of a heating element of a plurality of anti-freezing blocks.

27. In paragraph 26, A staircase structure characterized in that the power supply unit is formed to be exposed to the side of the anti-icing block.

28. In paragraph 26, A staircase structure characterized in that a wire insertion groove is formed on one side of the main body so that the wire is inserted and protected.

29. In paragraph 28, The above wire insertion groove is, As a lower region of the above plurality of steps, a main groove formed to be inclined downward on one side of the main body; and A staircase structure characterized by including a branch groove formed to extend upward from the main groove toward the staircase section, so as to face the power supply section of the anti-icing block installed on one of the staircase sections.

30. A construction method for a stair structure according to Article 26, A step of manufacturing the above anti-icing block by a precast method; A step of forming the main body by installing formwork and pouring concrete; A step of attaching a plurality of anti-icing blocks to the upper surface of the step portion of the main body, such that the power supply portion faces one side in common; and A method for constructing a stair structure, characterized in that it includes a step of connecting the wire to the power supply unit of a plurality of anti-freezing blocks.

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