KR102592062B1 - Indirect heating melter and bridge waterproofing construction method using the same - Google Patents

Abstract

The purpose of the present invention is to provide an indirect heating melter that can be applied immediately to the field by quickly melting waterproofing materials or film waterproofing materials to prevent carbonization, is lightweight by simplifying the structure, is easy to operate, and can be supplied at low cost. .
In addition, the present invention applies a primer to the base surface of the bridge deck to form an adhesive layer, heats and melts the coating waterproofing material on the adhesive layer using an indirect heating melter to form a waterproof layer, and uses a glass fiber grid or a double-sided adhesive on the waterproofing layer. Bridge surface waterproofing using an indirect heating melter that forms a protective layer by applying silica sand sheets to protect the waterproof layer from paving equipment and strengthens the paving layer at the same time, maintaining the life of the paving layer for a long time and preventing water from penetrating into the top plate. The purpose is to provide construction methods.
In order to achieve the above object, the indirect heating melter according to the present invention includes a melt tank equipped with an inlet for the coating waterproofing material on the upper plate and an outlet for the molten coating waterproofing material that opens and closes with a batten door at the lower part; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank, leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; It is characterized in that it consists of a discharge distribution tank installed at the end of the discharge tank.
In addition, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention to achieve the above object includes a melt tank in which an inlet for the film waterproofing material is installed on the upper plate and an outlet for the molten film waterproofing material that opens and closes with a hatch door is installed in the lower part. ; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; A bridge waterproofing construction method using an indirect heating melter consisting of a discharge distribution tank installed at the end of the discharge tank,
A step of removing the asphalt pavement on the bridge superstructure to a certain thickness and preparing the base surface to form a base layer (S 1); Forming an adhesive layer by applying a primer consisting of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of hydrodesulfurized naphtha on the surface of the base layer (S 2); On the adhesive layer, 100 parts by weight of a coating waterproofing material consisting of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin, and 100 parts by weight of a fine aggregate binder consisting of 70% by weight of fine aggregate, 1% by weight of reinforcing fiber, and 29% by weight of cement. Forming a waterproof layer by laying the film waterproofing material using an indirect heating melter (S 3); A double-sided silica sand sheet or a glass fiber grid is installed on the waterproofing layer, wherein the glass fiber grid is formed by one bundle line made of a plurality of warp yarns, and is formed by arranging at least one bundle line horizontally and vertically at regular intervals. It is composed of horizontal and vertical lines arranged to form a certain distance from the intersection point, and is composed of a fixing line located at each end of the bundle rope made of the horizontal or vertical lines and weaving and fixing the horizontal or vertical lines located at the intersection point. , the fixation of the intersection point by the fixing line is located at both ends of either the horizontal line or the vertical line, and wraps each of the tie lines formed in the corresponding horizontal line or vertical line and crosses each other when moved to the neighboring horizontal line or vertical line. It is formed by weaving by weaving in the direction, and is characterized by the step (S 4) of forming a protective layer by laying a glass fiber grid with a non-woven fabric attached to one surface.

Description

Indirect heating melter and bridge waterproofing construction method using the same {Indirect heating melter and bridge waterproofing construction method using the same}

The present invention relates to an indirect heating melter and a bridge waterproofing construction method using the same. In particular, an indirect heating melter for forming a heated film-type waterproofing layer to block the infiltration of water into the concrete of the bridge deck; Using the indirect heating melter, a waterproof layer consisting of an adhesive layer made of primer and a film waterproofing material is applied to prevent rainwater from penetrating into the bridge superstructure, and a protective layer such as a glass fiber grid or double-sided silica sand sheet is installed on the surface of the waterproofing layer to form a protective layer. It relates to a waterproofing construction method for forming a bridge.

In general, airfield runways that require durability and flatness or roads on which vehicles pass are generally composed of heated asphalt pavement, and are divided into earthworks, bridges, tunnels, etc. depending on the installation location.

In addition, asphalt pavement shrinkage and expansion due to traffic volume, passing load, ground behavior, rainwater, moisture, and external temperature changes, artificially sprayed chloride, ultraviolet rays, and aging of the asphalt composition are direct causes of pavement damage and destruction. .

In addition, asphalt or asphalt mixture undergoes short-term aging (STA) during manufacturing, transportation, and construction, and long-term aging (LTA) during long-term use.

This short-term aging or long-term aging of asphalt results in deformation of asphalt pavement during the process of volatilization in which trace amounts of volatile substances evaporate during manufacturing, laying, and use, which causes the lifespan of asphalt pavement to be shortened. there is.

In addition, the cause of aging of asphalt in use, that is, in use, is that hardening and brittleness increase due to aging of the asphalt composition over time in asphalt pavement, which reduces durability and causes cracking, which is one of the serious damages along with plastic deformation. It becomes the cause of.

In other words, plastic deformation of asphalt occurs approximately 2 to 3 years from the beginning of construction when the fluidity of the composition exists, and cracks occur in the middle stage, approximately 5 to 6 years or more, when the fluidity of the composition is lost.

During this process, damage and damage that occur in asphalt pavement, such as plastic deformation, potholes, surface cracks, reflection cracks, steps, settlement, and freezing, appear, and rainwater and foreign substances penetrate into the area, adding to durability and flatness. In other words, there is a problem that usability is reduced and the repetitive action of this process ultimately leads to low maintenance efficiency that shortens the lifespan of asphalt pavement and accelerates the resurfacing cycle.

In addition, reinforced asphalt is a method of securing durability and increasing the lifespan of asphalt pavement by effectively responding to the behavior of asphalt pavement exposed to this environment due to the passing load and suppressing and preventing damage and damage to asphalt pavement caused by various factors. Packaging is presented.

Looking at the above-described prior art, the asphalt reinforcement method using glassphalt reinforcement in Korean Patent No. 10-1077472 is formed by crossing transverse glass fibers and longitudinal glass fibers up and down at intervals of 1.8 to 2.2 cm, and the transverse glass To prevent the fibers from being separated from the longitudinal glass fibers, the longitudinal glass fibers are divided into first and second longitudinal glass fibers and then intersected with the transverse glass fibers, so that the top and bottom cross each other differently, and the transverse glass fibers In order to increase the bonding force between the first and second longitudinal glass fibers, the first and second longitudinal glass fibers are wrapped in the direction in which the first and second longitudinal glass fibers extend. A glass fiber grid network composed of fine glass fibers bonded together; a coating layer formed by impregnating the grid glass fibers into an impregnator containing asphalt emulsion; a silica sand layer formed on the upper side of the mesh glass fiber; A first step of removing the resin film layer of the glass phalt reinforcement formed on the lower side of the grid glass fiber by heating and burning it, and then placing it on the existing asphalt base surface from which the existing asphalt was cut; And it consists of a second step of paving asphalt on top of the glass phalt reinforcement.

In addition, another prior art is the bridge waterproofing structure of Republic of Korea Patent No. 10-1212519, which is provided between the concrete structure forming the top of the bridge and the packaging material applied to the concrete structure to prevent external foreign substances, including moisture, from penetrating into the concrete structure. In a bridge waterproofing structure configured to prevent external substances from entering, a coating film waterproofing material applied to the concrete structure to prevent penetration of external substances; It consists of a reinforcing material attached to the coating waterproofing material to prevent cracks from occurring in the coating waterproofing material due to the load acting on the packaging material, and the reinforcing material includes a non-woven fabric attached to the coating waterproofing material; It consists of a grid member provided integrally with the non-woven fabric in a grid shape, the grid member is made of glass fiber, the grid member is formed by coating the glass fiber with a bitumen material and then compressing it, and the coating waterproofing material is natural asphalt 10. % to 15%, straight asphalt 55% to 65%, synthetic oil 10% to 20%, and polymer 15% to 25%.

In addition, another prior art is an asphalt pavement plastic deformation prevention method using carbophalt fiber reinforcement disclosed in Republic of Korea Patent No. 10-1482163, which includes the step of forming an asphalt emulsion coating layer of coating the construction surface with an asphalt emulsion; Glass fibers extending in the direction in which the vehicle moves in the asphalt emulsion coating layer; The carbon fibers that cross above and below the glass fibers are formed to form a lattice shape, and the glass fibers are divided into first and second glass fibers and then repeatedly cross each other differently at the top and bottom when they intersect with the carbon fibers. It is formed by forming a grid network on the outside of the glass fiber, in which thin wire fibers are formed to surround the glass fiber; a coating layer formed by impregnating the grid into an impregnator containing asphalt emulsion; a resin film layer formed on the lower side of the grid; The resin film layer of the carbophalt fiber reinforcement, which consists of an anti-slip layer formed on the coating layer coated on the upper side of the grid, is removed by heating and burning, and then placed on the surface where the asphalt emulsion coating is formed. However, during continuous construction, the overlapping of the carbophalt fiber reinforcement is allowed. It consists of a step of forming a carbophalt fiber reinforcement layer within 10 to 20 cm and a step of forming an asphalt pavement layer of paving asphalt to a thickness of 2 to 5 cm on the upper side of the carbophalt fiber reinforcement, and the step of forming the carbophalt fiber reinforcement layer. The resin film layer composed of carbophalt fiber reinforcement is bi-oriented polypropylene with a thickness of 4~8㎛, softening point of 140℃, melting point of 165~170℃, 1㎜ in diameter, 400 holes per ㎡. Alternatively, 100 holes are formed per 1 m2 with a diameter of 4.5 mm.

However, the conventional asphalt pavement as described above does not effectively reduce the load acting on the pavement layer, that is, asphalt, and lateral energy such as vibration or impact according to the passing load, and also does not have a waterproof function, so it is damaged by the base surface and the surface. There is a problem of peeling and peeling phenomenon occurring between asphalt.

Accordingly, in order to solve the above-mentioned problems, the reinforcing fiber grid of Republic of Korea Patent No. 10-1860800, a coating device for applying the reinforcing fiber grid, and a deformation-resistant reinforced asphalt pavement construction method using the reinforcing fiber grid and the application device were proposed. It has been done.

Here, the reinforcing fiber grid of the above-mentioned Patent No. 10-1860800 is formed between a base surface and asphalt to improve adhesion to the asphalt and durability, and is formed as a single tying line made of a plurality of warp yarns, and the tying line is A reinforcing fiber grid comprising a plurality of horizontal and vertical rows arranged horizontally and vertically at regular intervals to form intersection points and regular intervals, and including fixing lines to maintain the horizontal rows fixed to the vertical rows, wherein the intersection points A plurality of fixed lines are positioned at each end of a vertical line configured to intersect a horizontal line, and each of the plurality of fixed lines wraps around the horizontal line while pointing from bottom to top, thereby ensuring the position of the horizontal line on the vertical line. A plurality of fixing lines are fixed so that the position of the horizontal lines intersecting the vertical lines is firmly fixed by weaving them so that they are crossed in the diagonal direction when each of the plurality of entwined fixed lines is placed in the neighboring horizontal line. and, at certain intervals, each of the plurality of fixing lines, which are alternately fixed in each of the plurality of vertical lines through the intersection points, are knitted together in a knitting manner to integrate the fixing lines, and the integrated fixing lines An asphalt adhesive is applied to any one of a plurality of vertical lines to maintain a fixed state as the integrated fixing line is adhered, and the asphalt adhesive includes 40 to 65 parts by weight of petroleum-based asphalt; 7 to 10 parts by weight of urethane rubber; 15 to 20 parts by weight of a reactive inorganic filler; 7 to 10 parts by weight of absorbent polymer resin; It is composed of 5 to 10 parts by weight of petroleum resin and 1 to 10 parts by weight of an isocyanate-based compound, and the warp yarn is characterized by one of glass fiber and carbon fiber or a mixture of them.

In addition, the reinforcing fiber grid application device of the above-mentioned Patent No. 10-1860800 is an application device for applying a reinforcing fiber grid that is configured between a new or repaired base surface and asphalt to improve adhesion and durability to the asphalt. The application device includes a frame, a compression roller configured at the lower end of the frame to support the reinforcing fiber grid to maintain the reinforcing fiber grid stably seated on the base surface, and a winding roll configured on one side of the frame on which the reinforcing fiber grid is wound. It consists of a winding part that is installed and supports the natural unwinding along the direction of movement of the applicator, and in the applicator, a plurality of fixing hardware is fixed to the reinforcing fiber grid laid on the base surface at regular intervals so that the reinforcement is provided. It is composed of a directly connected part to improve the fixing force to the fiber grid, and a plurality of directly connected parts are formed at regular intervals to provide a striking force to drive the fixed hardware into the base surface. The striking cylinder rotates reciprocally at a certain angle to secure the fixed hardware. It is composed of a rotating member that guides the device to be driven into the background after acquiring it, and a supply member that is configured to be spaced at a certain distance from the striking cylinder and accommodates a plurality of fixed hardware to support the supply of fixed hardware to the striking cylinder. It is characterized by

In addition, the deformation-resistant reinforced asphalt pavement construction method using the reinforcing fiber grid and application device of the above-mentioned Patent No. 10-1860800 includes a new or repaired base surface; An asphalt adhesive applied to the base surface to a certain thickness; An asphalt pavement construction method comprising a reinforcing fiber grid applied on the asphalt adhesive and asphalt applied to the base surface to a certain thickness to form a road surface, comprising: a base surface preparation step of preparing the base surface; An asphalt adhesive application step of applying an asphalt adhesive of a certain thickness on the base surface prepared through the base surface preparation step; When the asphalt adhesive of a certain thickness is applied to the base surface through the asphalt adhesive application step, the coating device is moved to the base surface and the reinforcing fiber grid wound on the winding portion of the applicator is applied to the base surface. , the coating agent is uniformly applied on the reinforcing fiber grid by the application member of the coating application portion configured in front based on the moving direction of the coating device, and the base is applied by the compressing force of the compression roller configured at the rear of the coating application portion. A reinforcing fiber grid application step of maintaining the reinforcing fiber grid adhered to the base surface by using an asphalt adhesive applied to the surface and a coating agent applied to the reinforcing fiber grid; When the reinforcing fiber grid is applied to the base surface through the reinforcing fiber grid application step, the fixing hardware is magnetically attached to the piston of the striking cylinder from the supply member formed in the application device, and is attached to the rotating member formed on one side of the striking cylinder. When the striking cylinder is erected vertically as it rotates, pressure is applied to the striking cylinder and the fixing hardware is embedded in the base surface due to the advancement of the piston, so that the reinforcing fiber grid is firmly fixed to the base surface. When the fixing of the reinforcing fiber grid with a plurality of fixing hardware is completed through the fixing hardware fixing step, a nonwoven fabric application step of laying nonwoven fabric on the reinforcing fiber grid to facilitate smooth passage of work vehicles; When the application of the non-woven fabric on the reinforcing fiber grid is completed through the non-woven fabric application step, an asphalt paving step is performed to complete the road surface by paving asphalt of a certain thickness on the base surface, and the asphalt adhesive is 40 to 65 weight. wealth of petroleum-based asphalt; 7 to 10 parts by weight of urethane rubber; 15 to 20 parts by weight of a reactive inorganic filler; 7 to 10 parts by weight of absorbent polymer resin; It is composed of 5 to 10 parts by weight of petroleum resin and 1 to 10 parts by weight of an isocyanate-based compound, and the coating agent includes 20 to 40 parts by weight of natural asphalt; 25 to 30 parts by weight of straight asphalt; 25 to 30 parts by weight of synthetic oil; It is characterized by being composed of 5 to 10 parts by weight of polymer and 5 to 10 parts by weight of epoxy.

Registered Patent No. 10-1860800, which has the structure described above, has the following problems.

The reinforcing fiber grid installed on the upper part of the waterproofing layer is subject to cracks, potholes, and damage due to ultraviolet rays, calcium chloride sprayed for snow removal in winter, loads exerted by heavy vehicles, and expansion and contraction due to atmospheric temperature, and the reinforcing fiber grid is damaged due to long-term use. Durability deteriorates due to aging, and as a result of this phenomenon, some of the rainwater and moisture-containing foreign matter on the reinforced fiber grid pavement surface penetrates into the reinforced fiber grid instead of being drained, and as a result, the structure may suffer frost damage in the winter. If this continues for a long period of time, the bridge surface is carbonated and deterioration progresses rapidly, which leads to a decrease in durability and loss of function of the bridge surface. For this reason, there is a need to install a waterproof layer.

Meanwhile, as mentioned above, for asphalt paving, if the waterproofing film is left in an open space for a long time or stored in a container for a long period of time, the oil evaporates and solidifies. In order to use the solidified film waterproofing material as a waterproofing material for the walls of concrete building structures, waterproofing for ground floors, paving materials for underground parking lots or new roads, and repair materials for cracks and potholes in existing pavements, it must be melted and liquefied. The only way to liquefy a block of film waterproofing is to melt it by heating, and the film waterproofing material melting device is used here.

For example, Registered Patent No. 10-0935447 includes a cylindrical drum-type outer cylinder with an inlet and an outlet formed on both sides, a cylindrical drum-type first inner cylinder installed inside the outer cylinder, and a cylindrical drum-type second inner cylinder installed inside the first inner cylinder. And a cylindrical drum-type third inner cylinder installed inside the second inner cylinder is installed concentrically so that first, second, and third drying chambers are formed, and when the object to be dried is introduced while blowing the flame of a burner into the inlet side of the third inner cylinder, It is dried in stages through the first drying chamber of the third inner tube, the second drying chamber formed between the second inner tube and the first inner tube, and the third drying chamber formed between the first inner tube and the outer tube, and is discharged through the outlet of the outer tube. However, this drying device is not suitable as a melting device for coating waterproofing materials with the ultimate purpose of melting because the fire of the burner and the object to be dried are dried in direct contact and eventually carbonized and discharged.

Another precedent, Patent No. 10-1313150, is that while a rotating drum equipped with an asphalt raw material inlet, a molten asphalt raw material discharge port, and an asphalt raw material melting space is rotated by a driving unit, the drum is heated by a heater and the asphalt raw material is melted and stirred. It is a direct heating type waterproofing material manufacturing device in which the molten asphalt raw material is guided to the discharge port by a spiral guiding blade and then discharged.

The heater is a burner or a heating element. The burner's combustion gas contains a large amount of harmful substances and soot, causing environmental pollution and harming health, and the thermal efficiency is low due to the large loss of the drum heating fire. The heating wire is in the form of a spiral wound around the outer circumference of the drum, and the spark phenomenon that occurs due to abnormal contact between the heating wire and the power terminal when the drum rotates is very dangerous.

In addition, since the heating wire is wound across the entire outer surface of the drum, a long heating wire is unavoidable, which increases the cost burden of the heating wire, thereby encouraging an increase in the cost of the film waterproofing material manufacturing equipment.

In addition, Registered Patent No. 10-1678338 discloses that a heating line for heat medium oil heated in a boiler heats and melts the sealant to reach a specified viscosity inside the sealant tank and then returns it to the boiler, and is installed on the discharge side of the sealant tank to supply the sealant. When the sealant drops below a certain viscosity due to the heat medium oil circulating through the heating line in the tank, the sealant is supplied to the sealant injection gun using a hydraulic pump to be injected and applied into the cutting grooves on the road surface. The sealant is a soft or high-viscosity liquid rubber composition. Although spraying is possible even when heated below 100℃, it is not possible to melt the waterproofing material, which has a much higher melting temperature than the sealant.

In addition, Registered Utility Model No. 20-0420328 circulates high-temperature air heated by the fire of the burner through the heating space formed between the adhesive material container and the waterproof material container to maintain the high temperature of the adhesive material and waterproof material, and the adhesive material spray member. and an inner tube that maintains the raw material supplied to the waterproof raw material spraying member at a high temperature, a cylindrical outer tube that forms a heating space filled with air around the outer periphery of the inner tube, and a high temperature at the lower side of the outer tube. It is equipped with a heat medium pipe that radiates, and the fire from the burner flows into the heating space created between the inner and outer cases by the outer case surrounding the inner case and directly heats the inner case, so the adhesive and waterproofing materials in the inner case are heated. There is a risk of it being lost.

In addition, the heat medium that indirectly heats the nozzle prevents the nozzle from freezing, but there is a problem in that the temperature of the heat is too low to melt the coating waterproofing material.

Registered Patent No. 10-1077472 Registered Patent No. 10-1212519 Registered Patent No. 10-1482163 Registered Patent No. 10-1860800 Registered Patent No. 10-0935447 Registered Patent No. 10-1313150 Registered Patent No. 10-1678338 Registered Utility Model No. 20-0420328

Accordingly, the present invention was developed to solve the problems described above. It can be applied immediately to the field by quickly melting the coating waterproofing material to prevent carbonization, and it is easy to operate while realizing weight reduction by simplifying the structure. The purpose is to provide an indirect heating melter that can be supplied at low cost.

In addition, the present invention applies a primer to the base surface of the bridge deck to form an adhesive layer, heats and melts the coating waterproofing material on the adhesive layer using an indirect heating melter to form a waterproof layer, and uses a glass fiber grid or a double-sided adhesive on the waterproofing layer. Bridge surface waterproofing using an indirect heating melter that forms a protective layer by applying silica sand sheets to protect the waterproof layer from paving equipment and strengthens the paving layer at the same time, maintaining the life of the paving layer for a long time and preventing water from penetrating into the top plate. The purpose is to provide construction methods.

In order to achieve the above object, the indirect heating melter according to the present invention includes a melt tank equipped with an inlet for the coating waterproofing material on the upper plate and an outlet for the molten coating waterproofing material that opens and closes with a batten door at the lower part; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank, leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; It is characterized in that it consists of a discharge distribution tank installed at the end of the discharge tank.

In addition, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention to achieve the above object includes a melt tank in which an inlet for the film waterproofing material is installed on the upper plate and an outlet for the molten film waterproofing material that opens and closes with a hatch door is installed in the lower part. ; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; A bridge waterproofing construction method using an indirect heating melter consisting of a discharge distribution tank installed at the end of the discharge tank,

A step of removing the asphalt pavement on the bridge superstructure to a certain thickness and preparing the base surface to form a base layer (S 1); Forming an adhesive layer by applying a primer consisting of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of hydrodesulfurized naphtha on the surface of the base layer (S 2); On the adhesive layer, 100 parts by weight of a coating waterproofing material consisting of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin, and 100 parts by weight of a fine aggregate binder consisting of 70% by weight of fine aggregate, 1% by weight of reinforcing fiber, and 29% by weight of cement. Forming a waterproof layer by laying the film waterproofing material using an indirect heating melter (S 3); It is formed on the waterproof layer as a single bundle made of a plurality of warp yarns, and consists of horizontal and vertical rows arranged at a certain interval with an intersection point formed by arranging at least one bundle of the bundles at regular intervals horizontally and vertically. It consists of a fixing line located at each end of the bundle made up of the horizontal or vertical lines and weaving and fixing the horizontal or vertical lines located at the intersection point, and the fixing of the intersection point by the fixed line is done by one of the horizontal or vertical lines. When positioned at either end, it is woven by wrapping each of the bundles formed in the corresponding horizontal or vertical rows and weaving them in a direction that crosses each other when moved to the neighboring horizontal or vertical rows, and a non-woven fabric is attached to one surface. It is characterized by the step (S 4) of forming a protective layer by laying a glass fiber grid or a double-sided silica sand sheet.

As described above, the indirect heating melter according to the present invention and the bridge surface waterproofing construction method using the same have the following effects.

First, the melt tank for the coating waterproofing material of the indirect heating melter according to the present invention is non-rotating, so the structure is simpler than that of excluding the rotating means, and the manufacturing cost reduction effect is significant due to the weight reduction.

Second, the indirect heating melter according to the present invention can melt the coating waterproofing material in a pollution-free manner through easy operation by energizing the impeller motor and heater.

Third, the indirect heating melter according to the present invention has a melting temperature of 180°C for the coating waterproofing material, which is the optimal condition for melting the coating waterproofing material in a short time without carbonizing it. As soon as the indirect heating melter is moved to the construction site to produce the molten coating waterproofing material. There is an advantage to spraying.

Fourth, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention involves applying a waterproofing layer consisting of an adhesive layer made of a primer and a film waterproofing material, and installing a protective material such as a glass fiber grid or a double-sided silica sand sheet on the surface of the waterproofing layer to form a protective layer. By doing so, it has the effect of preventing rainwater from penetrating into the superstructure of the bridge superstructure, protecting the protective layer from pavement equipment, and suppressing plastic deformation, traffic load, and fatigue cracking of the pavement, thereby increasing the service life.

Fifth, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention is a waterproofing layer composed of a steel plate of the deck and steel deck of the bridge superstructure that requires waterproofing function, and a coating waterproofing material installed on the base surface of structures such as covered roads and underground structures. It is installed with the ability to respond to cracks on the surface of the bridge superstructure, which is durable and behaves as a waterproof layer. As a result, durability of the bridge surface is maintained and secured for a long period of time, and foreign substances including rainwater and moisture penetrate into the surface of the bridge superstructure blocked by the waterproof layer. It has the advantage of preventing frost damage on the surface of the bridge superstructure in winter by fundamentally preventing it.

Sixth, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention has the function of rapidly curing the waterproofing film using an indirect heating melter and the function of immediately applying asphalt paving, which is a follow-up work, to the base surface, thereby improving traffic Enables early opening of

Seventh, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention can be applied to the paving of the surface of the bridge superstructure, and has the advantage of opening to traffic early by shortening the curing time.

Eighth, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention dramatically reduces the curing time by using an indirect heating melter, which is a construction equipment, and forms a waterproof layer by combining the applied indirect heating melters.

Ninth, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention applies adhesive to the surface of the bridge superstructure with little movement, omits the installation of a double-sided sand sheet or grid on the base surface, and uses only the film waterproofing material. Construction can also be done only at the installation stage.

Tenth, the bridge waterproofing construction method using an indirect heating melter according to the present invention can additionally block the infiltration of groundwater into structures installed underground, and in the case of hydraulic structures such as drainage ponds, purification ponds, and sedimentation ponds, expansion and construction are added at regular intervals. It is installed and can be used by applying the expansion groove of the expansion section.

In particular, the present invention can be used on bridge decks, covered road structures, etc. by applying a coating waterproofing material including an expansion groove with an expansion part.

1 is a configuration diagram showing an indirect heating melter according to the present invention;
Figure 2 is a configuration diagram showing an embodiment of an indirect heating melter according to the present invention;
Figure 3 is an illustration showing waterproofing construction of the main cross-section of the bridge using an indirect heating melter according to the present invention;
Figure 4 is an illustration showing waterproofing construction of a bridge protection wall using an indirect heating melter according to the present invention;
Figure 5 is a detailed view showing bridge surface waterproofing using an indirect heating melter according to the present invention;
Figure 6 is a perspective view showing an exploded view of bridge waterproofing using an indirect heating melter according to the present invention;
Figure 7 is a process diagram showing the waterproofing process of the main cross-section of the bridge using an indirect heating melter according to the present invention;
Figure 8 is a process chart showing the waterproofing process of a bridge protective wall using an indirect heating melter according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached illustration drawings.

[Indirect heating melter]

Figure 1 is a configuration diagram showing an indirect heating melter according to the present invention.

As shown in this figure, the indirect heating melter according to the present invention is equipped with an inlet (5) for the coating waterproofing material on the upper plate, and an outlet container (16, 16a) for the molten coating waterproofing material that opens and closes with a batch door (17, 17a) at the bottom. ) and a melting tank (1) installed; A stirrer (2) installed in the melt tank (1) and rotated by a reducer-attached impeller motor (10) to stir the film waterproofing material and the molten film waterproofing material in the melt tank (1); A jacket (6) installed on the outside of the melt tank (1), leaving a heat medium oil circulation space (15) between the melt tank (1) and the melt tank (1); A heater-embedded distribution unit (11) connected to the melt tank (1) for storing thermal oil through a thermal oil supply pipe (13) and a thermal oil return pipe (14); It consists of a discharge distribution tank (18, 18a) installed at the end of the discharge tank (16, 16a).

Here, the heater 12 is a sheath heater that heats heat medium oil to a desired high temperature in a short period of time.

In addition, the discharge pipes (16, 16a) are installed to penetrate the center of each bottom of the melt tank (1) and the jacket (6), next to the upper ends of the discharge pipes (16, 16a) rising into the melt tank (1). The discharge doors (17, 17a), to which an external lever (24) is attached, are pivoted on a pillar (23) erected on the ) to expose the outer end of the lever 24 to open and close the top of the discharge cylinders 16 and 16a by external manipulation.

In addition, the movement hole 25 is isolated from the heat medium oil circulation space 15 to prevent leakage of heat medium oil.

That is, as shown in FIG. 1, the indirect heating melter according to the present invention is based on a melting tank (1), a stirrer (2), a heater (3), and a heat medium oil pump (4).

Here, the melting tank (1) is of an upright type, and an inlet (5) through which the coating waterproofing material, which is a solid raw material, is introduced is installed on one side of the upper plate, and a heat medium oil circulation space (16) is created around the melting tank (1). As the heat medium oil circulates, it preheats the melting tank (1) and at the same time surrounds the jacket (6), which is essential for melting the film waterproofing material.

In addition, the stirrer (2) has a stirring blade (8) attached to a rotating shaft (7) installed to penetrate the center of the upper plate of the melt tank (1), and the rotating shaft (7) is the output shaft of the reducer (9) mounted on the upper plate. The upper end is connected to the impeller motor (10) to reduce the output of the impeller (10) to the reducer (9) to slowly rotate the rotation shaft (7) to mix the injected film waterproofing material and promote melting.

In addition, the heater (3) charges heat medium oil into the distribution (11), heats it with the heater (12), and supplies it to the heat medium oil circulation space (15) created by the jacket (6) to form the melt tank (1). The inner coating waterproofing material is melted to a temperature that makes it easy to spray.

Meanwhile, burners that burn bunker oil pollute the environment and generate a large amount of substances harmful to the human body along with bad odors. Therefore, gas burners for LPG must be equipped with an LPG cylinder and are frequently used in sites where coating waterproofing materials must be sprayed for a long time. It is unsuitable because of the inconvenience of having to replace the LPG cylinder.

Considering this, it is preferable that the heater 12 is a sheath heater that uses electricity as a heat source, as it has simple wiring, does not generate smoke, and does not cause the inconvenience of replacing the LPG cylinder.

The lower part of the heater (3) and the lower part of the distribution (11) are connected to a heat medium oil supply pipe (13) that supplies heated heat medium oil to the lower part of the jacket (6), and the heat medium oil supply pipe (13) is connected to the lower part of the heater (3). A heat medium oil pump (4) is installed to forcibly distribute the heated heat medium oil within (11) to the heat medium oil circulation space (15).

In addition, the upper part of the jacket 6 and the upper part of the distribution 11 recover some of the heat from the melt tank 1 while circulating in the heat medium oil circulation space 15 created by the jacket 6, and the temperature decreases. A heat medium return pipe (14) that guides the heat medium oil to be returned to the distribution (11) is also installed.

Meanwhile, at the lower part of the melt tank (1), a discharge pipe (16) that penetrates the jacket (6) and discharges the molten coating waterproofing material when necessary is installed to open and close with a discharge door (17), and the end of the discharge pipe (16) A paint waterproofing material discharge distribution box (18) is installed.

In addition, there is a thermometer 20 on the top plate of the melt tank 1 for checking the internal temperature of the melt tank 1, and a viewing window for checking the melted state of the coating waterproofing material at the same position in the melt tank 1 and the jacket 6 ( 21) is also provided.

[Manufacturing and spraying of film waterproofing material using an indirect heating melter]

The method of manufacturing and spraying the film waterproofing material using an indirect heating melter according to the present invention includes an inlet (5) for the film waterproofing material installed on the upper plate, and an outlet container (16, 16a) for the melted film waterproofing material that opens and closes with a batch door (17, 17a) at the bottom. ) and a melting tank (1) installed; A stirrer (2) installed in the melt tank (1) and rotated by a reducer-attached impeller motor (10) to stir the film waterproofing material and the molten film waterproofing material in the melt tank (1); A jacket (6) installed on the outside of the melt tank (1), leaving a heat medium oil circulation space (15) between the melt tank (1) and the melt tank (1); A heater-embedded distribution unit (11) connected to the melt tank (1) for storing thermal oil through a thermal oil supply pipe (13) and a thermal oil return pipe (14); A method of manufacturing and spraying a film waterproofing material using an indirect heating melter consisting of a discharge distribution tank (18, 18a) installed at the end of the discharge tank (16, 16a), the capacity of the melt tank (1) through the inlet (5) A step of charging a coating film waterproofing material corresponding to a predetermined capacity into the melt tank (1); Setting the temperature of the heat medium oil to a predetermined temperature with a heater controller, injecting an appropriate amount of heat medium oil into the injection pipe 22, and then operating the heater 12 to heat the heat medium oil until it reaches the setting temperature. ; When the heat medium oil exceeds a certain temperature, operating the heat medium oil pump (4) to supply and circulate the heat medium oil to the heat medium oil circulation space (15) to preheat the melt tank (1); A step of rotating the stirrer (2) with an impeller motor (10) to stir the melted film waterproofing material so that it is evenly melted when the first input film waterproofing material reaches the setting temperature at which it is completely melted; Continuing the melting operation by adding additional coating waterproofing material while checking the melting state of the coating waterproofing material at any time through the viewing window 21; When it is confirmed that the film waterproofing material is completely melted, opening the discharge door (17, 17a) and discharging the melted film waterproofing material into the discharge tank (16, 16a); It consists of a step of spraying the melted film waterproofing material by opening the nozzle attached to the discharge distribution box (18, 18a) while checking the amount of melted film waterproofing material accumulated in the discharge tubes (16, 16a).

That is, the method of manufacturing and spraying the film waterproofing material using an indirect heating melter according to the present invention includes an inlet (5) for the film waterproofing material installed on the upper plate, and an outlet container (16) for the melted film waterproofing material that opens and closes with batch doors (17, 17a) at the bottom. , 16a) and a melting tank (1) installed; A stirrer (2) installed in the melt tank (1) and rotated by a reducer-attached impeller motor (10) to stir the film waterproofing material and the molten film waterproofing material in the melt tank (1); A jacket (6) installed on the outside of the melt tank (1), leaving a heat medium oil circulation space (15) between the melt tank (1) and the melt tank (1); A heater-embedded distribution unit (11) connected to the melt tank (1) for storing thermal oil through a thermal oil supply pipe (13) and a thermal oil return pipe (14); A method of manufacturing and spraying a film waterproofing material using an indirect heating melter consisting of a discharge distribution tank (18, 18a) installed at the end of the discharge tank (16, 16a), the capacity of the melt tank (1) through the inlet (5) After charging the film waterproofing material corresponding to the predetermined capacity into the melt tank (1), set the temperature of the heat medium oil to a predetermined temperature with the heater controller, inject an appropriate amount of heat medium oil through the injection pipe (22), and then heat the heater. After operating (12) to heat the heat medium oil until it reaches the set temperature, when the heat medium oil exceeds a certain temperature, the heat medium oil pump (4) is operated to supply and circulate the heat medium oil to the heat medium oil circulation space (15). After preheating the melting tank (1), when the setting temperature is reached, which is the point at which the firstly added film waterproofing material is completely melted, the stirrer (2) is rotated with the impeller motor (10) to stir the melted film waterproofing material so that it is evenly melted. After continuously checking the melting state of the coating waterproofing material through the viewing window 21 and continuing the melting operation by adding additional coating waterproofing material, when it is confirmed that the coating waterproofing material is completely melted, open the discharge doors (17, 17a) and discharge the discharge container (16). After discharging the melted film waterproofing material to 16a), while checking the amount of melted film waterproofing material accumulated in the discharge cylinder (16, 16a), open the nozzle attached to the discharge distribution tank (18, 18a) to spray the melted film waterproofing material. It is done.

Hereinafter, the manufacturing and spraying of the film waterproofing material using the indirect heating melter according to the present invention, which consists of the steps described above, will be described in detail at each step.

First, a coating waterproofing material equivalent to 30% of the capacity of the melt tank (1) is charged into the melt tank (1) through the inlet (5).

Set the temperature of the heat medium oil to 180°C using a heater controller (not shown), inject an appropriate amount of heat medium oil into the injection pipe 22, and then operate the heater 12 to heat the heat medium oil until it reaches the above setting temperature. do.

When the heat medium oil exceeds 100°C, the heat medium oil pump (4) is operated to supply and circulate the heat medium oil to the heat medium oil circulation space (15) to preheat the melt tank (1).

Then, when the setting temperature reaches 180°C, which is the point at which the firstly added film waterproofing material completely melts, the stirrer (2) is rotated by the impeller motor (10) to stir the melted film waterproofing material so that it is evenly melted.

The melting state of the coating waterproofing material is constantly checked through the viewing window 21, and additional coating waterproofing material is added to continue the melting operation.

When it is confirmed that the film waterproofing material is completely melted, open the discharge door (17) and discharge the melted film waterproofing material into the discharge container (16).

The gas generated in the process of melting the waterproofing film is naturally discharged through the inlet (5).

The heat medium oil is replenished using the heat medium oil injection pipe (22), and the oil vapor generated due to the temperature rise is discharged through the check valve (23) installed on the top of the distribution (11).

While confirming the amount of melted coating waterproofing material accumulated in the discharge container 16, a nozzle (not shown) attached to the discharge distribution container 18 is opened to spray the melted coating waterproofing material.

The melting temperature of 180℃ of the film waterproofing material is the optimal condition for melting the film waterproofing material in a short time without carbonizing it, and the indirect heating melter can be moved to the construction site and sprayed as soon as the molten film waterproofing material is produced.

Since the melt tank (1) is non-rotating, the structure is simple and lightweight, eliminating the rotation means, resulting in significant reduction in production costs.

In addition, the film waterproofing material can be melted without pollution along with easy operation by energizing only the impeller motor 10 and the heater 12.

Here, if the indirect heating melter of FIG. 1 is a horizontal type molten coating waterproofing material discharge type, the indirect heating melter of FIG. 2 is a vertical melting coating waterproofing material discharge type.

That is, in the indirect heating melter according to the present invention, the discharge tank (16a) is moved so as to penetrate the center of each bottom of the melt tank (1) and the jacket (6), and a nozzle is attached to the bottom of the discharge tank (16a). A discharge separator (18a) is installed.

And a pillar 23 is erected next to the upper end 16b of the discharge tank 16a rising inside the melt tank 1, and an externally operated lever 24 is attached to one side of the discharge door 17a, and the pillar A lever-type pivot is installed at (23) so that the lever (24) can be tilted downward, and a vertical action hole (25) is formed on the side of the melt tank (1) and the jacket (6), thereby allowing the lever (24) to move. This is a case in which the upper end of the discharge container 16a can be opened and closed by external manipulation by exposing the outer end.

The active hole 25 is isolated from the heat medium oil circulation space 15 to prevent heat medium oil from leaking therethrough.

Hereinafter, bridge waterproofing construction using an indirect heating melter according to the present invention will be described.

[bridge surface waterproofing]

Figure 3 is an exemplary diagram showing waterproofing construction of the main cross-section of the bridge using an indirect heating melter according to the present invention, Figure 4 is an exemplary diagram showing waterproofing construction of a bridge protection wall using an indirect heating melting machine according to the present invention, and Figure 5 is a detailed view showing bridge waterproofing using an indirect heating melter according to the present invention, and Figure 6 is an exploded perspective view showing bridge waterproofing using an indirect heating melter according to the present invention.

As shown in these figures, bridge surface waterproofing (P) using an indirect heating melter according to the present invention includes an adhesive layer 40 formed by applying a primer to the surface of the bridge superstructure 30; A waterproofing layer (50) in which a coating waterproofing material (52) is formed on the adhesive layer (40); A protective layer (60) formed by laying a glass fiber grid (62) or a double-sided silica sand sheet on the waterproof layer (50); It consists of a pavement layer (70) in which asphalt is formed on the protective layer (60).

In other words, the bridge surface waterproofing (P) using an indirect heating melter according to the present invention is a structure in which an adhesive layer 40, a waterproof layer 50, a protective layer 60, and a packaging layer 70 are sequentially laminated.

Here, the adhesive layer 40 is formed by applying a primer to the surface of the bridge superstructure 30.

The primer consists of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of hydrodesulfurized naphtha.

In particular, 0.1 to 0.5% by weight of benzene, 2 to 3% by weight of n-hexane, 1 to 5% by weight of toluene, and 1 to 5% by weight of xylene based on 100% of the weight of the primer. %, 4.2 to 16.5 wt% of an additive consisting of 0.1 to 3 wt% of ethyl benzene is added and mixed.

Here, the oxidized asphalt is purified by blowing air while heating the semi-solid residue at the end of the distillation process for collecting light oil from petroleum, and forms a dark brown or black elastic semi-solid or solid state, heat resistance and Because it has high impact resistance and low moisture resistance, it is used for thermal insulation, cold insulation, waterproofing, packaging, and acid-resistant construction.

In other words, oxygen in the air oxidizes asphalt, which causes a dehydrogenation reaction of hydrocarbon components in asphalt, resulting in condensation and polymerization reactions among the molecules that make up asphalt. When this happens, it changes into asphalt with a high softening point and low penetration, which is called oxidized asphalt.

In addition, the hydrodesulfurization naphtha is made by catalytically reforming naphtha obtained by distilling crude oil to aromatize at least part of the naphtha and increase the octane number of naphtha. Since reforming catalysts are generally deactivated by sulfur compounds, naphtha must be desulfurized and then catalytically reformed.

In the hydrodesulfurization treatment method, the raw material spill is desulfurized by contacting it with a catalyst suitable for hydrodesulfurization treatment at high temperature under pressurized hydrogen atmosphere.

Here, the catalyst typically used to hydrodesulfurize the naphtha comprises Group VIII elements (e.g. cobalt and nickel) and Group VI elements (e.g. chromium, molybdenum and tungsten) supported on a suitable carrier. The hydrodesulfurization treatment method is usually performed at a temperature of about 300 to 400° C., a hydrogen partial pressure of about 30 to about 200 kg/cm2, and a liquid space velocity per hour of about 0.1 to about 10 liters/hr.

Catalysts typically used to hydrodesulfurize naphtha include a combination of Part VIII and Part VI elements (e.g. a combination of cobalt and molybdenum) supported on a suitable carrier (e.g. alumina). The hydrodesulfurization treatment method is usually carried out at a temperature of about 280 to about 350° C., a hydrogen partial pressure of about 15 to about 40 kg/cm2, and an LHSV of about 2 to about 8 liters/hr.

Meanwhile, the additives added to the primer include 0.1 to 0.5% by weight of benzene, 2 to 3% by weight of n-hexane, 1 to 5% by weight of toluene, and 1 to 5% by weight of xylene. It consists of 0.1 to 3 wt% of ethyl benzene.

That is, the primer additive is a mixture of benzene, normal hexane, toluene, xylene, and ethylbenzene.

Here, benzene is a volatile liquid hydrocarbon made by distilling and refining coal tar. It has a planar regular hexagonal ring structure with six carbon atoms in the same plane, and is the most basic aromatic hydrocarbon material, and a representative example is annulene (6-annulene).

In addition, normal hexane belongs to aliphatic hydrocarbons and exists in cracked oil and crude oil of petroleum hydrocarbons. At room temperature and pressure, it is a colorless and transparent liquid with a boiling point of 69°C and is flammable. It dissolves some organic substances in addition to animal and vegetable fats and oils and mineral oil.

In addition, toluene is one of the most representative aromatic hydrocarbons, and compared to benzene, which has six hydrogens, toluene is substituted with a methyl group that has an electron donor effect, allowing various electrophilic substitution reactions. In particular, 2,4,6-trinitrotoluene (TNT), a compound with three nitro groups substituted, is used as an explosive compound.

Additionally, the xylene is also called dimethylbenzene and xylol. Chemical formula C8H10 or C6H4(CH3)2. It has a structure in which two methyl groups are bonded to a benzene ring, and there are three isomers: orthoxylene, metaxylene, and paraxylene. It is a colorless liquid with a sweet odor and is highly flammable, with a molecular weight of 106.17. Melting point, boiling point, specific gravity, etc. vary depending on the isomer. All isomers are insoluble in water, but mix well with organic solvents such as ether and benzene.

Meanwhile, the ethylbenzene has the chemical formula C8H10. It is a colorless liquid, with a molecular weight of 106.17, a melting point of -94.4℃, a boiling point of 136.5℃, and a specific gravity of 0.8672. It has a characteristic aromatic hydrocarbon odor. It is contained in petroleum, gasoline, naphtha, etc., but it is difficult to separate. It is obtained by mixing benzene with aluminum chloride, blowing in ethylene, and distilling it. Industrially, it is manufactured by alkylating benzene with ethylene using aluminum chloride as a catalyst. It is used as a raw material because it becomes styrene through a dehydrogenation reaction.

A primer composed of the above-mentioned composition can obtain the following test results.

Primer test results serial number Test items unit Test Methods Test result One Viscosity (Spindle #61, 20RPM, 25℃) cP JIS K 6833:2008 210 2 Non-volatile matter % JIS K 6833:2008 51.1 3 Touch drying time minute JIS K 5600:1999 10 4 Low temperature flexibility (-10℃) - JIS K 5600:1999 clear 5 Adhesion - JIS K 5400:1999 10 6 Adhesion after moisture resistance - JIS K 5400:1999 10 7 Adhesion after salt spray - JIS K 5400:1999 10 8 Workability - KS M 5000 : 2019 clear

In addition, the waterproof layer 50 is formed by laying a waterproofing film material 52 on an adhesive layer 40 to which a primer is applied.

Here, the film waterproofing material 52 includes 100 parts by weight of a film waterproofing material composed of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin; It consists of 100 parts by weight of a fine aggregate binder consisting of 70% by weight of fine aggregate, 1% by weight of reinforcing fiber, and 29% by weight of cement.

That is, the coating waterproofing material 52 is composed of a coating waterproofing material and a fine aggregate binder.

Here, the coating waterproofing material 52 is composed of natural asphalt, straight asphalt, and synthetic resin.

The natural asphalt is a type of natural solid petroleum bitumen, which is produced from asphaltic crude oil in the early stages of deterioration and is produced near the surface of oil fields. It is similar to asphalt obtained by oil refining. Specific gravity is 0.95-1.15, melting temperature is 15-175℃, fixed carbon content is 1-25%, and solubility in carbon disulfide is 60-98%.

In addition, the straight asphalt is extracted from crude oil without changing the asphalt component as much as possible, and asphalt is a solid polymer called asphaltene in a highly viscous oil-like or resinous substance called petrolene or marten. This is dispersed. Straight asphalt is mainly used as a paving material because it is dominated by the properties of petroleum and has good elasticity and adhesion, but the temperature reduction ratio is high.

Additionally, the synthetic resin refers to synthetic polymer materials other than those used as fibers and rubber. A word created in response to natural resin. It is broadly divided into thermoplastic resins and thermosetting resins. In addition, resins obtained through chemical processing using natural polymer materials such as celluloid and acetylcellulose as raw materials are called semi-synthetic resins, and synthetic resins and semi-synthetic resins are also collectively called plastics.

Meanwhile, the fine aggregate binder is composed of fine aggregate, reinforcing fiber, and cement.

Here, the fine aggregate refers to aggregate that passes all of the 10 mm sieve specified in the standard sieve, almost all of the 4.76 mm sieve, and almost all remaining in the 0.074 mm sieve, and generally refers to the particle size of 5 mm or less.

Additionally, the reinforcing fiber is made of any one of glass fiber, carbon fiber, and fiber-reinforced plastic.

The following test results can be obtained from the coating waterproofing material composed of the above-mentioned composition.

Paint waterproofing material test results serial number
Test/inspection items
unit
Test and inspection methods
Test/inspection results
One
Workability
-












KS F 4932 : 2017
clear
2
Non-volatile matter
%
99.4
3
Touch dry time
minute
10
4


Seal
Performance

tensile strength
Untreated
N/㎟
2.07
Alkaline treatment
N/㎟
1.93
Heat treatment
N/㎟
1.94

elongation rate
Untreated
%
899
Alkaline treatment
%
860
Heat treatment
%
803
5
Permeability resistance
-
Not a pitcher
6
Heat resistance and dimensional stability (150℃, 30 minutes)
%
-0.4
7
Crack resistance
-20℃
-
No chips, tears or breaks
8
Chloride ion penetration resistance
coulombs
1.24
9
inner dent
-
0.20
10
Fatigue resistance
-
3.1
11
shear
adhesion
Performance
shear adhesion
robbery
-20℃
MPa
4.2
20℃
MPa
0.20
shear adhesion
strain rate
-20℃
%
3.1
20℃
%
4.2
12
tensile bond strength
-20℃
MPa
1.51
20℃
MPa
0.71
13
7 days after immersion
tensile bond strength
20℃
MPa
0.53

In addition, the protective layer 60 is formed by laying a double-sided silica sand sheet or a glass fiber grid 62 on the waterproof layer 50.

Here, the double-sided silica sand sheet is manufactured in the form of a roll of a certain thickness by using polyester long fiber non-woven fabric as a central reinforcement, and the upper and lower surfaces are completely impregnated with SBS modified asphalt, and is a composite non-exposed waterproof sheet with the front and back surfaces finished with silica sand. .

Quality standards for double-sided silica sand sheets tensile strength
(N/mm) 13 or more Shear bond deformation
(%, 20℃) 1.0 or higher Heat resistance, dimension safety
(150℃, 30 minutes) Within ±2.0 Elongation rate (%) 33 and above Tensile adhesive strength
(N/㎟, -20℃) 1.2 and above Naeumpum indentation clear Shear bond strength
(N/㎟, -20℃) 0.8 or higher Tensile adhesive strength
(N/㎟, 20℃) 0.6 or higher Fatigue resistance Shear bond strength
(N/㎟, 20℃) 0.15 or higher Permeability resistance clear crack resistance,
Low temperature bendability
(-20℃) Shear bond deformation
(%, -20℃) 0.5 or more Chloride ion penetration resistance 100 or less joint strength
(N/mm) 5.0 or higher

Physical properties table of double-sided silica sand sheet Chemical name Common and alternative names content(%) asphalt Petroleum Asphalt, All Grades: Asphaltem; bitumen; bitumen, asphalt; Bituminous materials, asphalt, petroleum bitumen; 60~70 calcium carbonate calcium carbonate; calcite; limestone; marble; 10~20 Styrene-butadiene rubber STYRENE-BUTADIENE RUBBER 7~15 polyethylene terephthalate POLYETHYLENE TEREPHTHALATE 5~10 Hydrotreated heavy paraffin distillate (petroleum) emulsion oil 1~8 quartz free silicic acid; fiber glass; silicon dioxide 3~13 polyethylene no data 1~8

In addition, the glass fiber grid 62 is formed of a single bundle made of a plurality of warp yarns, and is arranged so that there is a certain distance from the intersection point formed by arranging at least one bundle row at regular intervals horizontally and vertically. It is composed of horizontal and vertical lines, and is located at each end of the bundle line made of the horizontal or vertical lines, and consists of a fixing line that weaves and fixes the horizontal or vertical lines located at the intersection point, and the intersection point is fixed by the fixing line. When placed on both ends of either the horizontal or vertical row, it is formed by weaving by wrapping each bundled rope formed in the corresponding horizontal or vertical row and weaving in a direction that crosses each other when moved to the neighboring horizontal or vertical row, and one side It is a member with non-woven fabric 44 attached to the surface.

That is, the glass fiber grid 62 is composed of a grid and non-woven fabric 44.

Here, the glass fiber grid 62 is composed of a woven net or mesh net that is fixed in a floating manner, and an attachment fabric is attached to one side, thereby improving durability and providing functionality to prevent deformation due to an applied load, vibration, impact, etc. It improves.

glass fiber grid division
grid
(Center spacing/cm
elastic modulus
(Gpa)
Elongation at break
(%)
Packaging specifications
(Width m × Length m/roll
Coating (grid)
note
1st coating
2nd coating
AP-G200
2.54×2.54
70～
4 or less
1.0, 2.0 ×50～100
o
-/-
AP-G300
2.54×2.54
70～
4 or less
1.0, 2.0 ×50～100
o
-/-

Meanwhile, the pavement layer is asphalt laid at a certain thickness on the protective layer 60.

Bridge surface waterproofing using an indirect heating melter according to the present invention configured as described above involves applying a waterproofing layer 50 consisting of an adhesive layer made of a primer and a coating waterproofing material 52, and applying a glass fiber grid 62 to the surface of the waterproofing layer 50. ) or installing a double-sided silica sand sheet to form a protective layer, and laying asphalt on the protective layer to prevent rainwater from penetrating into the superstructure of the bridge superstructure, to protect the protective layer from paving equipment, and to prevent plastic deformation of the pavement. , it has the effect of increasing service life by suppressing traffic load, fatigue cracks, etc.

[Age waterproofing construction method]

Hereinafter, bridge waterproofing using an indirect heating melter according to the present invention configured as described above will be described.

Figure 7 is a process diagram showing the waterproofing process of the main cross-section of the bridge using an indirect heating melter according to the present invention.

As shown in these figures, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention includes an adhesive layer 40 in which a primer is applied to a certain thickness on the surface of the bridge superstructure 30; A waterproofing layer (50) in which a film waterproofing material (52) is laid at a certain thickness on the adhesive layer (40); A protective layer (60) in which a glass fiber grid (62) or a double-sided silica sand sheet is laid on the waterproof layer (50); A method of replacing and constructing old asphalt pavement using bridge surface waterproofing using an indirect heating melter consisting of a pavement layer (70) in which asphalt is laid to a certain thickness on the protective layer (60),

A step (S 1) of removing the asphalt pavement on the bridge superstructure 30 to a certain thickness and preparing the base surface to form a base layer 32;

Forming an adhesive layer 40 by applying a primer consisting of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of hydrodesulfurized naphtha on the surface of the base layer 32 (S 2);

On the adhesive layer 40, 100 parts by weight of a coating waterproofing material consisting of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin, 70% by weight of fine aggregate, 1% by weight of reinforcing fiber, and 29% by weight of cement are fine aggregate binders 100. Step (S3) of forming a waterproof layer 50 by laying a coating waterproofing material 52 made up of parts by weight;

A horizontal line formed on the waterproof layer 50 by a single bundle made of a plurality of warp yarns, and arranged so as to form a certain distance from an intersection point formed by arranging at least one bundle of the bundles horizontally and vertically at regular intervals, and It is composed of a vertical line, and is composed of a fixing line that is located at each end of the horizontal line or a tying line composed of vertical lines and fixes the horizontal or vertical lines located at the intersection point by weaving, and the fixation of the intersection point by the fixed line is done by the horizontal line. Or, when located at both ends of one of the vertical rows, it is formed by weaving in a direction that crosses each other when moving to a neighboring horizontal row or vertical row while wrapping each of the bundle rows formed in the corresponding horizontal row or vertical row, and a non-woven fabric is formed on one surface. Step (S4) of forming a protective layer 60 by laying a glass fiber grid 62 or a double-sided silica sand sheet to which (44) is attached; Asphalt pavement is constructed by sequentially performing the step (S 5) of laying asphalt to a certain thickness on the protective layer 60 to form the pavement layer 70.

That is, the bridge surface waterproofing construction method using an indirect heating melter according to the present invention includes a base layer 10 forming step (S 1), an adhesive layer 40 forming step (S 2); Waterproofing layer 50 forming step (S 3); It is characterized by sequentially constructing the protective layer 60 forming step (S 4) and the packaging layer forming step (S 5).

Here, the base layer forming step (S 1) is a step of removing laitance, dust, contaminants, etc. from the entire existing aged asphalt pavement using equipment such as a wheel saw.

At this time, a combination of appropriate equipment and manpower is used to remove the entire aged asphalt pavement.

Subsequently, in the adhesive layer 40 forming step (S 2), a primer consisting of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of hydrodesulfurization naphtha is applied to the surface of the base layer 32, 100% by weight of the primer, 0.1 to 0.5% by weight of benzene, 2 to 3% by weight of n-hexane, 1 to 5% by weight of toluene, 1 to 5% by weight of xylene, 4.2 to 16.5% by weight of an additive consisting of 0.1 to 3% by weight of ethyl benzene is added, mixed, and applied evenly using a roller.

Subsequently, the waterproofing layer 50 forming step (S 3) is performed on the adhesive layer 40 by applying 100 parts by weight of a coating waterproofing material 52 consisting of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin and 70% by weight of fine aggregate. , a waterproof layer 50 is formed by laying a film waterproofing material 52 made of 100 parts by weight of a fine aggregate binder consisting of 1% by weight of reinforcing fiber and 29% by weight of cement.

Here, the film waterproofing material 52 used to form the waterproof layer 50 is loaded on a dedicated truck with an indirect heating melter and transported to the site, and then the film waterproofing material 52 is melted with an indirect heating melter and then discharged. Repeat laying on the base layer.

At this time, the application temperature of the film waterproofing material 52 using the indirect heating melter is 160 to 210°C, and after melting to a maximum of 250°C, it is discharged and uniformly applied on the adhesive layer.

Subsequently, in the protective layer forming step (S 4), the glass fiber grid 62 is formed on the waterproof layer 50 as a single bundle made of a plurality of warp yarns, and the bundle is horizontally and vertically divided into at least one bundle. It consists of an intersection formed by arranging at regular intervals and horizontal and vertical lines arranged to form a regular interval, and is located on both ends of the bundle made of the horizontal or vertical lines, and fixes the horizontal or vertical lines located at the intersection by weaving them together. It consists of a fixed line, and when the intersection point is fixed by the fixed line and is located at both ends of one of the horizontal or vertical lines, it moves to the neighboring horizontal or vertical line while wrapping each of the tie lines formed in the corresponding horizontal or vertical line. When doing so, a weave is formed by weaving in mutually crossing directions, and the glass fiber grid 62 with the non-woven fabric 44 attached to one surface is turned over and constructed with the non-woven fabric facing the pavement layer.

Here, in the present invention, the protective layer is illustratively described as being constructed using a glass fiber grid 62, but it should be noted that it may be alternatively constructed with double-sided silica sand if necessary.

Next, in the pavement layer forming step (S 5), asphalt, a pavement material, is laid at a laying degree of 150°C or higher.

Figure 8 is a process diagram showing the waterproofing process of a bridge protective wall using an indirect heating melter according to the present invention.

As shown in these drawings, the bridge waterproofing construction method using an indirect heating melter according to the present invention After forming the waterproofing layer 50 during the bridge asphalt main cross-section paving construction step described above, the edge of the superstructure 30 and the protective wall 80 After installing a perforated drain pipe (85) in the space and installing molded joints (90) on the perforated drain pipe (85) as necessary, seal the film waterproofing material (52) in the gap between the perforated drain pipe (85) and the protective wall (80). Process the ends by filling.

The preferred embodiments described in the specification of the present invention are illustrative and not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications within the meaning of the claims are included in the present invention. It will happen.

1: Melting tank 2: Stirrer
3: Heater 4: Heat oil pump
5: Inlet 6: Jacket
7: Rotating shaft 8: Stirring blade
9: Reducer 10: Impeller motor
11: Distribution 12: Heater
13: Heat oil supply pipe 14: Heat oil return pipe
15: Heat oil circulation space 16: Discharge bin
16a: discharge bin 17: discharge door
17a: discharge door 18: discharge distribution box
18a: discharge distribution box 21: viewing window
22: heat oil injection pipe 23: pillar
24: lever 25: action ball
30: superstructure 32: base layer
40: adhesive layer 50: waterproof layer
60: protective layer 62: glass fiber grid
70: pavement layer 80: protective wall
85: drain pipe 90: molded joint
P: Bridge waterproofing

Claims (7)

A melt tank equipped with an inlet for the film waterproofing material on the upper plate and an outlet for the molten film waterproofing material installed on the lower part, which opens and closes with a hatch door; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; It consists of a discharge distribution tank installed at the end of the discharge tank, the melt tank is of an upright type, and an inlet for inputting the coating waterproofing material, which is a solid raw material, is installed on one side of the upper plate, and a heat medium oil circulation space is created around the melt tank to heat the heat medium. It is configured to surround the jacket, which is essential for preheating the melt tank as the oil circulates and melting the coating waterproofing material at the same time. The stirrer has a stirring blade attached to a rotating shaft installed to penetrate the center of the upper plate of the melting tank, and the rotating shaft is located on the upper plate. The upper end is connected to the output shaft of the installed reducer, so that the output of the impeller motor is reduced by the reducer and the rotating shaft rotates slowly to mix the injected coating waterproofing material and promote melting. The heater is composed of a sheath heater, and the lower part of the heater The lower part of the distribution is connected to a heat medium oil supply pipe that supplies heated heat medium oil to the lower part of the jacket, and a heat oil pump is installed on the heat medium oil supply pipe to forcefully distribute the heated heat medium oil in the distribution to the heat medium oil circulation space. In the upper part of the jacket and the upper part of the distribution, a heat medium return pipe is installed to induce the heat medium oil, whose temperature has decreased by recovering part of the heat from the melt tank while circulating in the heat medium oil circulation space created by the jacket, to be returned to the distribution. , At the bottom of the melt tank, a discharge pipe that penetrates the jacket and discharges the molten film waterproofing material is installed to open and close with a discharge door. A discharge distribution box for the coating waterproofing material is installed at the end of the discharge pipe, and a melt tank is installed on the top of the melt tank. A thermometer is installed to check the internal temperature of the melt tank and the jacket, and a viewing window for checking the melted state of the coating waterproofing material is provided at the same position in the melt tank and the jacket. The discharge tank is installed so as to penetrate the center of each bottom of the melt tank and the jacket. A discharge door with an external operating lever attached is pivoted on a pillar erected next to the upper end of the discharge tank rising inside the melt tank, and the outer end of the lever is exposed through an action hole formed on the side of the melt tank and the jacket to expose the outer end of the lever. An indirect heating melter configured to open and close the top of the discharge tank by operation, and wherein the action hole is isolated from the heat medium oil circulation space to prevent leakage of heat medium oil. delete delete delete A melt tank equipped with an inlet for the film waterproofing material on the upper plate and an outlet for the molten film waterproofing material installed on the lower part, which opens and closes with a hatch door; A stirrer installed in the melt tank and rotated by a reducer-attached impeller motor to stir the coating film waterproofing material and the molten coating waterproofing material in the melt tank; a jacket installed on the outside of the melt tank leaving a heat medium oil circulation space between the melt tank and the melt tank; A distribution unit with a built-in heater connected to the melt tank through a heat medium oil supply pipe and a heat medium oil return pipe for storing heat medium oil; It consists of a discharge distribution tank installed at the end of the discharge tank, the melt tank is of an upright type, and an inlet for inputting the coating waterproofing material, which is a solid raw material, is installed on one side of the upper plate, and a heat medium oil circulation space is created around the melt tank to heat the heat medium. It is configured to surround the jacket, which is essential for preheating the melt tank as the oil circulates and melting the coating waterproofing material at the same time. The stirrer has a stirring blade attached to a rotating shaft installed to penetrate the center of the upper plate of the melting tank, and the rotating shaft is located on the upper plate. The upper end is connected to the output shaft of the installed reducer, so that the output of the impeller motor is reduced by the reducer and the rotating shaft rotates slowly to mix the injected coating waterproofing material and promote melting. The heater is composed of a sheath heater, and the lower part of the heater The lower part of the distribution is connected to a heat medium oil supply pipe that supplies heated heat medium oil to the lower part of the jacket, and a heat oil pump is installed on the heat medium oil supply pipe to forcefully distribute the heated heat medium oil in the distribution to the heat medium oil circulation space. In the upper part of the jacket and the upper part of the distribution, a heat medium return pipe is installed to induce the heat medium oil, whose temperature has decreased by recovering part of the heat from the melt tank while circulating in the heat medium oil circulation space created by the jacket, to be returned to the distribution. , At the bottom of the melt tank, a discharge pipe that penetrates the jacket and discharges the molten film waterproofing material is installed to open and close with a discharge door. A discharge distribution box for the coating waterproofing material is installed at the end of the discharge pipe, and a melt tank is installed on the top of the melt tank. A thermometer is installed to check the internal temperature of the melt tank and the jacket, and a viewing window for checking the melted state of the coating waterproofing material is provided at the same position in the melt tank and the jacket. The discharge tank is installed so as to penetrate the center of each bottom of the melt tank and the jacket. A discharge door with an external operating lever attached is pivoted on a pillar erected next to the upper end of the discharge tank rising inside the melt tank, and the outer end of the lever is exposed through an action hole formed on the side of the melt tank and the jacket to expose the outer end of the lever. A bridge waterproofing construction method using an indirect heating melter, which is configured to open and close the top of the discharge tank by operation, and where the action hole is isolated from the heat medium oil circulation space to prevent leakage of heat medium oil,
A step of removing the asphalt pavement on the bridge superstructure to a certain thickness and preparing the base surface to form a base layer (S 1);
On the surface of the base layer, 100% by weight of a primer consisting of 60 to 65% by weight of oxidized asphalt and 35 to 40% by weight of Hydrodesulfurization Naphtha, 0.1 to 0.5% by weight of benzene, and n-Hexane ) 4.2 to 16.5% by weight of additives consisting of 2 to 3% by weight, 1 to 5% by weight of toluene, 1 to 5% by weight of xylene, and 0.1 to 3% by weight of ethyl benzene are added and mixed. And applying to form an adhesive layer (S 2);
On the adhesive layer, 100 parts by weight of a coating waterproofing material consisting of 15% by weight of natural asphalt, 65% by weight of straight asphalt, and 20% by weight of synthetic resin, and 100 parts by weight of a fine aggregate binder consisting of 70% by weight of fine aggregate, 1% by weight of reinforcing fiber, and 29% by weight of cement. Forming a waterproof layer by laying the film waterproofing material using an indirect heating melter (S 3);
After applying the coating waterproofing material to form a waterproof layer, a perforated drain pipe is installed between the edge of the superstructure and the protective wall, and a double-sided silica sand sheet or glass fiber grid is installed on the waterproof layer, wherein the glass fiber grid is made of a plurality of warp yarns. It is formed of a single bundle line, and is composed of horizontal and vertical lines arranged to form a certain interval with an intersection formed by arranging at least one bundle line horizontally and vertically at regular intervals, and a bundle made up of the horizontal or vertical lines. It consists of a fixing line located at each end of the line and fixing the horizontal or vertical lines located at the intersection point by weaving, and the fixation of the intersection point by the fixed line is located at either end of the horizontal line or the vertical line, It is formed by weaving by wrapping each of the bundles in the corresponding horizontal or vertical rows and weaving them in a direction that crosses them when moved to the neighboring horizontal or vertical rows, and a protective layer is created by laying a glass fiber grid with non-woven fabric attached on one surface. A bridge waterproofing construction method using an indirect heating melter, characterized in that it consists of a forming step (S 4). delete delete

Images