KR20180020795A - Waterproof agent compound and method for forming the same - Google Patents

Abstract

The present invention relates to a composition of a quick-hardening asphalt coating complex waterproofing agent and a manufacturing method thereof, which improve a performance for preventing reflective cracks on concrete pavement and bridge-deck pavement and a problem of the coating being thinned by being pressed by a vehicle wheel, by using natural asphalt having low use temperature, natural fiber, and carbon fiber. According to the present invention, the composition of a quick-hardening asphalt coating complex waterproofing agent includes: 1 to 87.6 wt% of asphalt binder; 1 to 25 wt% of gilsonite; 1 to 10 wt% of SBS rubber; 0.1 to 3 wt% of rosin resin; 0.1 to 3 wt% of PE wax; 5 to 24 wt% of slag fine powder; 5 to 24 wt% of slag aggregate; 0.1 to 5 wt% of natural fiber; 0.1 to 3 wt% of carbon fiber; and 0.01 to 2 wt% of a surfactant.

Description

TECHNICAL FIELD [0001] The present invention relates to a composite waterproofing agent and a method for manufacturing the composite waterproofing agent, which comprises a natural asphalt, a natural fiber and a carbon fiber, COMPOUND AND METHOD FOR FORMING THE SAME}

The present invention relates to a civil engineering field, and more particularly, to a concrete pavement comprising a natural asphalt such as Gilsonite, TLA, natural fibers, carbon fiber, PE wax and modified asphalt containing polymer, The present invention relates to a composition and a method for manufacturing a composite asphalt coating waterproofing agent having a reduced use temperature at the time of construction.

In recent years, polymer concrete such as LMC (Latex modified Concrete) is often used for concrete pavement and bridge pavement. This is done to ensure durability against vibration and impact load in bridges and it is a great help to maintain long life by high durability. In recent trends, for quick repair in concrete pavement, cement used in LCM is replaced with quick-speed cement, and LMC is applied to repair at a very rapid rate. They have very excellent construction performance and durability but they are disadvantageous in cost . Economics is a very high consideration due to the planned economic recession, and due to economic shortfalls, LMC with ultra-fast cement is being turned into a limited trend.

Especially, it is impossible to use fast speed concrete in the case of asphalt pavement which occupies about 50% of domestic pavement roads. There are many attempts to apply it because it is economical to use asphalt pavement in concrete pavements of about 50%. However, in the case of concrete roads, there is a joint of 4 ~ 6mm width in order to prevent the damage of the pavement due to shrinkage and expansion due to the concrete specific temperature at intervals of 6m. The uniformity occurred when the asphalt overlay is formed from the bottom of the ascon pavement surface A so-called reflection crack occurs at the top. Also, joints should be installed at the same interval as the lower concrete pavement.

For this reason, the thickness of the asphalt pavement layer should be over 4cm in order to prevent the reflection cracking inhibition. For the satisfactory reflection crack prevention performance, the ascon pavement thickness should be 8cm. A variety of methods have been proposed for overlaying concrete pavement surfaces. In particular, the use of grids, nonwoven fabrics or increased thickness of ascon pavement have been claimed to prevent reflection cracks.

Korean Patent No. 10-209394 'coating film waterproofing agent' is a brand of synthetic rubber latex to emulsified asphalt, which is not a heating type but contains a large amount of water (12-41% by weight), which requires considerable time for drying. Therefore, in a construction with a time limit such as maintenance, the daily amount of construction can be increased or decreased according to the temperature, so that a satisfactory performance can be obtained. If the evaporation of water is not attained, the strength of the coating is significantly lowered, There is a disadvantage that it can be damaged when it occurs. Also, in the case of the emulsion system containing water as described above, the evaporation rate of water greatly changes according to the temperature, and the drying time may be increased. In the case of spring and fall, the drying speed decreases with increasing drying speed during construction, . Therefore, it is preferable to use a heated asphalt which can show a faster construction speed in case of maintenance. However, in the case of hot asphalt, in case of a hot summer, the cooling speed is slowed to increase the construction time. It is advantageous to record.

Korean Patent No. 10-549564 entitled " Compositions and methods for producing a flexible, asphalt-based waterproofing composition using molten liquid rubber of waste tires ", discloses a composition comprising asphalt waterproofing composition composed of asphalt, waste tire powder, filler and thickener, It is difficult to prevent reflection cracks generated in bridges due to the disadvantage that the ability to prevent cracks is not large.

Korean Patent No. 10-1030574 entitled " Wet Face Adhesive High Viscosity Asphaltic Mastic Film Waterproofing Material and Method for Manufacturing the Same ", a heated asphalt composed of asphalt pitch and process oil, asphalt modifier, strength reinforcing agent, heat strengthening agent, inorganic filler, Use of waterproofing agent or high boiling point process oil may slow the drying time and is not suitable for repair. Process oil has the ability to dissolve oxidized asphalt and may have a good effect on lowering the viscosity of asphalt of high viscosity, but it hardly evaporates when the flash point is above 200 ℃. Therefore, when the process oil is contained at 10% or more, low-temperature stability is good, but the mastic waterproof layer may deform at high temperature in the summer.

Most of the invented heating type asphalt asphalt waterproofing agents have been converted into complex type waterproofing which is used simultaneously with the sheet due to the disadvantages of the high temperature heating of the melting type, the increase in the curing time, and the lack of the ability to prevent reflection cracks. Combined waterproofing is a method in which a coating waterproofing agent is used as an adhesive layer at the bottom of a sheet layer to improve the adhesion of the coating layer to the concrete layer rather than the conventional method in which the adhesive layer is provided under the sheet, So that better performance can be secured.

However, in the case of using this complex waterproofing agent, the construction method is to cut the concrete surface, clean the surface, dry it, apply the primer thereto, and install the coating waterproofing agent on the primer layer. The primer is used for the purpose of preventing the swelling of the film due to the expansion of water and air in the capillary after the coating of the pore waterproofing agent by coating the pore and also for the purpose of improving the adhesion and is made of a polymer of a dilute solution having a solid content of about 10% to be. Asphalt type, acrylic type and chloroprene type can be used for the coating type, but all of them except for asphalt are mixed with the solvent and have a solids content of about 50%. When the solvent is completely evaporated, It is possible to greatly reduce the adhesive force as in the case of the emulsion system.

In case of asphalt, it is possible to make a solvent type which is made by mixing with aromatic base oil and solvent in process oil, and it is possible to make a solvent form by adding a polymer modifier to asphalt at high temperature by heating and melting. Dance formulations do not contain any solvent but simply heat to form a liquid phase. Typical examples are epoxy or urethane. In the case of a solvent-free resin, it is present in the form of a solution in the form of a solution. It is converted into a resin and converted to a hard solid after a suitable period of time. Since asphalt is solid at room temperature, in order to use asphalt as a coating waterproofing agent for a non-solvent type, it is necessary to heat the asphalt to a proper temperature to form a solution phase. Here, various materials are used to complement the disadvantages of asphalt, It is a very good material to add. However, the melting point of asphalt is relatively high at 100 ° C or higher, and exists only in a solution state at a higher temperature. Asphalt dissolved at a lower temperature is not suitable as a waterproofing material applied on the road.

Normally, an appropriate amount of SBS (styrene-butadiene-styrene) or other polymer compound is added to the asphalt. This is because the asphalt hardly cures at low temperature and has a characteristic of being easily toughened. Therefore, the stability is improved at a low temperature by including a polymer, It is common to improve the high temperature stability by using natural asphalt. The high temperature stability is caused by the rise of the climate especially the surface temperature of the asphalt recently exceeds 60 ° C, resulting in the change of the shape of the asphalt pavement layer due to the extreme temperature rise in summer This change in the shape of the pavement layer has been pointed out as a disruption to the normal passage of the driver and the passenger or as the main cause of the accident. The ability of the form to interfere with such temperature rise depends on the characteristics of the asphalt used in the asphalt pavement, that is, the binder, and the higher the softening point, the higher the temperature stability is secured.

According to academic reports, natural asphalt is a remnant of oil that has evaporated for a very long time in the dielectric layer, and the asphalt content of the asphalt is very high, and the ratio of resin to oil is low. Asphalten shows the main physical properties of asphalt, which is solid at room temperature, cohesive and nonbreakable, but lacks stability at low temperatures. For this reason, natural asphalt usually has a very stable bonding strength at low temperature and high temperature by mixing petroleum asphalt and high molecular weight material, rather than using alone for construction. T.L.A and Gilsonite are typical examples of natural asphalt. In Gilsonite, asphalt content is more than 90% but about 50% of T.L.A is lower than asphalt. Other components are composed of a large amount of silicon compounds or alumina minerals.

Domestic technologies using these natural asphalt as a waterproofing agent for construction include Korea Patent No. 10-1619445 entitled "Low cost and high performance self-assembled cross-linked waterproof sheet and its waterproof structure using natural asphalt in Indonesia" and natural asphalt and petroleum asphalt, It is a self-hardening sheet waterproofing agent produced by using a polymer compound. This technology is a technology to manufacture sheet waterproofing agent using natural asphalt. It is different from the coating waterproofing and uses natural asphalt and polymer in the process of making the sheet.

Korean Patent No. 10-1511237 discloses "asphalt mixture for asphalt pavement for low cost and eco-friendly asphalt using natural asphalt in Indonesia and method for manufacturing the same" as a method of manufacturing asphalt concrete used for the pavement layer, Its function is completely different from that of an expensive and waterproof layer.

Korean Patent Laid-Open No. 10-2014-0087671 entitled "Method and Composition for Modified Asphalt Waterproofing Sheet or Modified Asphalt for Waterproof Coating Film" is a method for producing a modified asphalt composition which is excellent in adhesiveness using asphalt, SBS, SIS and natural resin at 140 to 160 ° C., The present invention relates to an asphalt composition which maintains flexibility and reduces cracks. It is characterized by using a styrene-isoprene-styrene block copolymer (SIS) and improving a low-temperature property by using a natural resin. However, Most of them are improved and have the same characteristics as those of conventional modified asphalt compositions. In particular, there is no suggestion for securing resistance to cracks.

On the other hand, Korean Patent No. 10-992952 discloses a composite waterproofing structure using adhesion of a low melting point modified asphalt coating waterproofing agent and a double-faced silica sand sheet, and a construction method thereof includes straight asphalt, thermoplastic rubber, petroleum resin, But it also takes a considerable time not more than 12 hours for the process oil to completely evaporate and harden by using the process oil having a high boiling point and the hardening time is delayed in the low temperature environment of the spring and fall season, If the subsequent process such as packaging is delayed or the process oil is not completely dried, there is a disadvantage that the waterproofing agent is torn out. The coating waterproofing agent requires a very high tensile strength in order to prevent reflection cracks, especially sliding due to automobile wheels. In order to overcome such tensile strength, sheet waterproofing is preferable to coating waterproofing and is a limitation of coating waterproofing agents.

Korean Patent No. 10-1579844 A method of manufacturing an asphalt-impregnated fiber grid and a method of increasing adhesive force between asphalt pavement provide a more convenient construction. It is suggested that the grid is impregnated with asphalt, the impregnated grit is fixed on the floor by adhesive, and then melted and adhered by the heat of the asphalt used as the surface layer. However, there is a disadvantage in that the surface to which the impregnation grid is attached in the reverse region is not easily adhered due to the irregularities and adheres to the wheel of the asphalt concrete installation equipment to be carried out in the subsequent process.

The present invention proposes a method to overcome these disadvantages and limitations of the coating type waterproofing agent for reflection cracks and cracks, and introduces natural fibers for this purpose. By including the resin in the resin, the processing temperature is lowered to produce at a relatively low temperature Economic effect. Also, in the case of the solvent-free coating type waterproofing agent of the no-drying type, the construction speed is the largest in consideration of the overall construction cost. To improve this, a method of rapidly cooling and rapidly crystallizing is required. Accordingly, by introducing a carbon fiber having a high thermal conductivity, it is possible to speed up the cooling rate of the coating film water repellent and to improve the existing technology by securing a rapid crystallization degree by including the resin and the sulfur. .

The use of coating waterproofing agents in bridges construction, where heavy loads are generated in civil engineering structures due to thin thickness, slow construction speed, and bubble generation after construction, have been greatly reduced compared to sheet waterproofing agents. This is because, in the case of the mixture phase of the coating type waterproofing agent, the solvent type which is generally used when it is classified into the solvent type and the non-solvent type is crystallized after the evaporation of the solvent, so that the subsequent process can not be performed until the evaporation of the solvent is completed. In case of the solvent type, the solvent is generally composed of about 50% by weight of the solvent. The volume of the coating film waterproofing agent dried after the evaporation of the solvent depends on the amount of the solvent contained, so that the thickness after drying is about 50 parts by volume of the coated waterproofing agent % And generally requires at least two applications to achieve the required 2 mm thickness.

On the other hand, in the case of the water-repellent coating film of the heating type, generally, a high-boiling solvent is used, but the solvent serves to lower the viscosity at a low temperature during use, and the solvent also acts as a plasticizer after cooling to lower the tensile strength of the water- Repeated load action in the pavement layer or shear forces that occur at the start and stop of a heavy-duty vehicle may result in jolting or tearing. Therefore, it is absolutely not preferable to use a high-boiling solvent such as process oil or the like for the heating type coating film waterproofing agent, and the use of the agent should not use or use a small amount of material capable of rapidly evaporating.

The application of coating waterproofing agent and sheet waterproofing agent in construction under construction is shown in FIG. Generally, the thickness of about 2mm is applied. According to the present report, it has been shown that when used for a long time, it is deformed to less than 50% of the initial thickness and holes are generated by the aggregate of concrete caused by compression . For this reason, patents have been filed to prevent breakage by installing non-woven fabrics such as non-woven fabrics as a middle layer when coating two times, but the flatness of the packaging surface is poor and the thickness of the film is thinner than 2 mm, Recently, the application of this is applied to roof and underground exterior waterproofing materials of buildings, and it is rarely used in roads, bridges, and the like. Another method is to use a grid, but this is also limited because it is difficult to install due to the unevenness of the concrete surface. In addition, as an attempt to use this method in a more convenient way, a method of impregnating asphalt on a grid and heating and pressing it has been proposed. However, there are not many cases applied due to adhesion problem on uneven surface. For this reason, the requirements for the coating waterproofing agent are listed

 1) Using a spray or other application equipment, a heating solution type of a solventless form without using solvent such as process oil or solvent can improve the application speed.

2) The coating waterproofing agent should be a composition that does not decrease in thickness because it can withstand the pressure caused by the passage of the vehicle when it is used for a long time after the completion of construction including the inorganic material.

3) The coating waterproofing agent is excellent in thermal conductivity, and rapid cooling after construction can improve the construction speed.

4) After the formation of the coating film, it should contain enough fiber to prevent penetration of the holes by the aggregate of the concrete surface.

5) The change of tensile strength according to temperature should not be large.

In order to satisfy the above requirements and to secure economical efficiency, the present invention includes asphalt as a base material and SBS rubber as a base to ensure low-temperature stability. In addition, ginsenoside was added as natural asphalt to ensure high temperature stability, and rosin resin was added to melt at low temperature. Sulfur was melted to ensure rapid crystallization after curing. Slag powder was introduced as a filler to prevent squeezing of the coating due to the load of wheel, and natural fiber was added to prevent tearing. By incorporating carbon fiber for cooling after construction, it is possible not only to accelerate curing during construction but also to prevent decrease in film thickness due to squeezing of the wheel, as well as tearing due to aggregate mosaic on the floor, A composition capable of preventing tearing was obtained. Details of the present invention will be described in Examples and the like.

Asphalt is classified as natural asphalt and petroleum asphalt. In the case of natural asphalt, crude oil is hardened by evaporation and oxidation for a long time. It hardly contains hard substance and contains impurities such as sand. T.L.A, which is originated from Trinidad islands, has high softening point and little change with temperature. Gilsonite is classified as asphalite but unlike T.L.A, it has a low impurity content and its stability at high temperature is very good but it is weak at low temperature. Therefore, natural asphalt should be mixed with petroleum asphalt rather than simply mixed with petroleum asphalt, but it should be added to functionality, and SBS rubber should be included to ensure stability at low temperature. Table 1 shows the composition ratio of each material. First, asphalt can be selected from AP 3, and natural asphalt is based on ginsenoside.

Name of substance AP 3 Gilson Night SBS Rubber Rojin resin PE
Wax Slag fine powder Slag aggregate Natural fiber Carbon fiber Surfactants Sum content
(weight%) 1-87.6 1-25 1-10 0.1-3 0.1-3 5-24 5-24 0.1-5 0.1-3 0.01-2 100

The content of AP3 as an asphalt binder is 1 to 87.6% by weight, and the content of AP3 is preferably 10 to 30% by weight. When the content of AP 3 is less than 1 wt%, it is difficult to form a coating film, and the nature of the asphalt is lost. When the AP 3 content is more than 87.6 wt%, the coating has poor low temperature stability. However, APs can use any AP other than AP 3, but AP 3 or AP 5, which are relatively inexpensive and supplied smoothly, are preferable. In addition, when the AP is changed, the physical properties of the finally obtained coating film must meet the requirements of the present invention.

The standard of ginsonite to be added here is preferably about 150 to 200 DEG C at a softening point, and poor at high temperature when it is lower than 150 DEG C. On the other hand, when the temperature is higher than 200 ° C, it is not preferable to use it because it is hard to process, the compatibility with AP 3 is poor, and it swells by oil contained in AP 3 and shrinks upon curing to cause cracking. The amount of gilsonite is preferably from 1 to 25% by weight, and if it is less than 1% by weight, the stability at high temperature is not improved. If it is more than 25% by weight,

The ratio of styrene to butadiene is very important for SBS rubber (SBS rubber), and the ratio of styrene to butadiene is preferably about 10:90 to 40:60. If the styrene content ratio is less than 10, the adhesion may be deteriorated. If it is more than 90, it may be too hard to break, and it may be easily decomposed into ultraviolet rays. A preferred ratio of the preferred styrene: butadiene is 25:75 to 35:65 by weight. The content of SBS rubber in the whole mixture is 1 ~ 10 wt%. If it is less than 1%, low temperature stability can not be secured. If it is more than 10%, it is not economical with asphalt. The preferable content of SBS rubber is 1 to 5% by weight.

In order to reduce the heating temperature of the heating type coating film waterproofing agent, paraffin wax series, sulfur, and rosin resin are generally used. In the present invention, 0.1 to 3 wt% of rosin resin and PE wax are used for the whole mixture. If the concentration is less than 0.1, it is difficult to lower the heating temperature. If it is higher than 3%, the heating temperature may be lowered by 5 ° C or more, but the resin and PE wax may deteriorate in high temperature stability. The preferred amount is 0.2 to 2.5% by weight.

It is preferable that the slag used as the filler for preventing the coating film from being pressed by the load of the vehicle is used together with the fine powder and the slag aggregate of about 0.1 to 2.5 mm. The slag fine powder may have a specific surface area of 4,000 to 10,000 cm ² / g. When the slag fine powder is larger than 4,000, the blending ratio with the slag aggregate used is poor and the filling property is poor. When the slag fine powder is larger than 10,000, It can adversely affect the flatness of the work. The preferred size is 4,000 ~ 5,000cm ² / g. Of these components, the content of magnesium oxide is important and the maximum content is 10% by weight. The lower the content of magnesium oxide is, the better the workability and resistance to water after curing, but the higher the removal cost, the better the content is below 6%.

The fine aggregate of slag should be composed of 0.1 ~ 2.5mm and it should satisfy the oxide slag aggregate for KS F 4571 concrete. The absorption rate of aggregate should be less than 2.0%. If it is used at a water absorption rate higher than 2.0%, the freeze-thaw stability after curing can be very easily deteriorated, and a desirable water absorption rate is 1.0% or less. The content of slag powder and aggregate is 5 ~ 24 wt% of the total amount. If it is less than 5%, it can be squeezed by the pressure of the vehicle after forming the coating film. If it exceeds 24%, the viscosity of the coating film waterproofing agent The castle is significantly worse. The content of the fine slag powder and the aggregate is preferably 5 to 20 wt% of the total amount.

The amount of the natural fiber and the carbon fiber for improving the tear resistance of the coating film waterproofing agent and for quick curing is the most important factor in the present invention. The amount of the natural fiber used for the compression of the wheel and the aggregate of the concrete surface is 0.1 to 5% by weight of the total weight, and the amount of the carbon fiber for quick cooling is 0.1 to 3% by weight. If the amount of the natural fiber is less than 0.1%, the perforation can not be prevented, and if the amount is 5% or more, the workability is significantly reduced. The amount of the natural fiber is preferably 0.2 to 3% by weight. PE, nylon and the like can not be used because the present invention is manufactured at a high temperature. It is preferable that glass fibers, rock wool, metal fibers and the like are not used due to high toxicity to human body.

If the content of carbon fiber is less than 0.1%, the effect of heat conduction is remarkably reduced, and if the content of carbon fiber is more than 5%, economical efficiency is deteriorated. The amount of the carbon fiber is preferably 0.2 to 3% by weight. Alternatively, instead of carbon fiber, fibers such as copper and aluminum may be used for rapid cooling. However, it is preferable not to use fiber of which thickness is not suitable for the purpose of the present invention to be implemented.

Finally, a small amount of the surfactant can be used to improve the wettability. Since the present invention is an oil-type surfactant, a hydrophobic surfactant is more preferable than a hydrophilic surfactant having a high HLB. Surfactants having an HLB value of 2 to 9 are used, preferably 2 to 8. If it is less than 2, it is difficult to increase the adhesion force because the surfactant force on the concrete wet surface is not large. When it is larger than 9, the compatibility with asphalt is poor. The amount used is 0.01 ~ 2%. If it is less than 0.01, it is not effective. If it is more than 2%, the water resistance is bad and when the surface of the film changes, the surface of the coating may become whitish.

In the case of the heated asphalt coating waterproofing agent composed of the above-mentioned components, there is a very low risk of being torn by the wheel and the thickness is not thinned even when used for a long time. In particular, it is very convenient to use in repairing because it can be cured quickly during construction, thereby greatly reducing the curing period of the waterproof coating agent of the present invention. Also, since the nonwoven fabric and the grid for protecting the coating film are not used, the workability is excellent and the resistance against the reflection crack can be greatly improved.

The present invention provides an asphalt coating waterproofing agent composition and a method of manufacturing a waterproofing agent for asphalt which have improved reflection cracking inhibiting ability and are compressed by wheels and have a reduced use temperature when applied, Is to be constructed quickly and economically.

The manufacturing process consists of 1) melting the petroleum asphalt AP 3 and natural asphalt ginsonite and SBS rubber, 2) dispersing the surfactant, 3) dispersing the fiber and the filler, 4) viscosity with the rosin resin and PE wax And 5) aging step. If the order is changed in the process, the viscosity will increase during the manufacturing process and the process may be hardened in the melting facility.

The temperature of the melting step in step 1) should be about 180-230 ° C. If the temperature is lower than 180 ° C, the melting time of gilsonite is too long. If the temperature is higher than 230 ° C, the oil content of AP 3 may evaporate and the viscosity may increase greatly. The melting time generally depends on the total amount, but 30 to 90 minutes is suitable for 1 ton. If the melting time is less than 30 minutes, the melting of gilsonite is not completed completely, and if it exceeds 90 minutes, the viscosity may increase greatly. The preferred melting temperature is 190 to 220 占 폚 and the dispersion time is 45 to 75 minutes.

In step 2), the surfactant is dispersed at a temperature of 180 ° C and 20 ° C. The dispersion time is 3 ~ 10 minutes. If the temperature is lower than 160 ℃, the viscosity of 1) step mixture may be increased. If it is higher than 200 ℃, the surfactant may be decomposed. If the dispersion time is less than 3 minutes, complete dispersion is difficult, and if it is more than 10 minutes, all dispersion is meaningless.

The temperature of the step of dispersing the fiber of step 3) is the same as that of step 2). The dispersion time is suitably about 10 to 60 minutes, preferably 20 to 40 minutes. If the fiber length is less than 10 minutes, the fiber is not dispersed sufficiently, and if it is longer than 60 minutes, the fiber may be re-entangled.

The final viscosity control step 4) is carried out at a temperature of 140 to 180 ° C. When the temperature is lower than 140 ° C., it takes a long time to lower the viscosity and the manufacturing cost is increased. When the viscosity is higher than 180, PE wax evaporates and fume is generated It is harmful to the human body. The time for adjusting the viscosity is sufficient to be 10 to 30 minutes, preferably 10 to 20 minutes. The composition, which has been mixed, is aged at 150 캜 and 20 캜 for 1 to 2 hours to complete the present invention.

The agitation speed of the stirring tank used in the present invention should be 15 to 60 RPM. When the RPM is less than 15 RPM, the agitation is difficult to complete. When the RPM is more than 60 RPM, a very large load may be generated. A preferred stirring speed is 15 to 30 RPM.

The storage temperature of the present invention is in the range of 110 to 160 ° C. When the temperature is lower than 110 ° C, the viscosity rises sharply and becomes difficult to use. If it is higher than 160 ° C, the cost for maintaining the temperature is high. The preferred storage temperature is 120-150 ° C.

The use temperature is 150 10 10 ℃ when it is applied. If the temperature is lower than 140 ° C, the workability may deteriorate. If the temperature is higher than 160 ° C, the flowability may be excessively improved, so that it may flow down the slope. However, it is preferable to empirically determine the temperature at the time of construction according to the atmospheric and bottom surface temperature conditions at that time, and it can be set at about 10 ° C higher than in the winter season.

The construction equipment should use the injection equipment already equipped with the heating device which is already sold, and such equipment is effective in a large area. If the area is not wide, it is necessary to equip the hot water heating equipment separately or use the thermal insulation equipment. The construction area is preferably 7% or less in dry condition. Generally, the swelling due to the expansion of air or moisture in the pores of the concrete when applied is not required to be irrespective of its size. This is because the present invention, which is a thermoplastic again by the packaging of the asphalt applied to the upper part, is remelted and the pinhole part is filled and integrated with the upper asphalt mixture.

The thickness of the coating is 2 ~ 5mm. If it is thinner than 2mm, it is difficult to guarantee the quality because the coating acts on all surfaces uniformly. The preferred thickness is 2 to 3 mm. If the surface temperature of the finished film reaches room temperature or it is confirmed to be less than 70 ℃, the subsequent process is possible although the curing time differs depending on the atmospheric conditions. If the temperature is higher than 70 ° C, wheels or the like may be left behind or tearing when a heavy object such as a dump truck is moved in a subsequent process. Generally, when cured at a temperature of 20 ° C and a thickness of 3 mm, the curing time is 30 minutes to 1 hour. If rain falls during construction, immediately stop the construction and protect the construction site. When restarting the construction, make sure to check the drying condition of the construction site to check whether the foreign matter or the water content of the concrete surface is suitable for the condition.

Resistance to reflection cracks can be achieved only when the self-adhesive tensile strength of the coating waterproofing agent is excellent. Among the conventional methods, when the grids or nonwoven fabrics used to suppress the reflection crack are used, the tensile strength is improved by the tensile characteristics of the grid or nonwoven fabric. The tensile strength of domestic waterproofing agent should be not less than 13N / mm for cross-linked waterproof sheet type, 1.5MPa for coated membrane type and 1.5MPa for composite membrane waterproofing agent.

However, when the present invention is used, the tensile strength of the fiber used can be equal to or higher than that of the sheet type, and the curing time of the primer, which occupies the largest portion in the construction time, is compared with that of rubber asphalt Within the first 30 minutes, the second 60 minutes, and the resin 60 minutes within the rubber system (solvent type), the actual curing time is 12 to 24 hours. However, the present invention introduces a mechanism for facilitating thermal equilibrium by thermal conduction by including a substance that rapidly conducts temperature transfer, so that when it is based on the atmospheric environment at 20 ° C, Within 60 minutes, it is possible to work very quickly. This is faster curing time than primer or coating type waterproofing agent of any kind of material developed to date, and it is suitable for construction that need to secure construction time especially during road construction with all advantages of coating waterproofing agent and sheet type waterproofing agent . In addition, it is a very economical invention that can reduce the construction cost by half.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the constitution of a coating waterproofing agent and a sheet waterproofing agent;
Fig. 2 is a manufacturing process diagram according to the present invention; Fig. And,
3 is a construction procedure diagram according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail. Petroleum asphalt AP 3, natural asphalt, SBS Ruber, surfactant, fiber and sulfur and rosin resin are listed in the table in Table 2 Is prepared according to the manufacturing process (Fig. 2). The coated waterproofing agent prepared thereafter was prepared by preparing a test piece of 1 m x 1 m x 3 mm by the construction procedure of FIG. 3 and comparing the tensile strength and the like (see Table 3) based on the coating waterproofing agent for KSF 4932, The performance of the invention was compared and evaluated.

Name of material AP3 Gilson Night SBS Rubber rosin
Resin PE
Wax Slag fine powder Slag aggregate natural
fiber carbon
fiber Surfactants system practice
Example 1 15 2 2 One One 37.7 37.8 1.5 1.5 0.5 100 practice
Example 2 20 3 3 One One 34.2 34.3 1.5 1.5 0.5 100 practice
Example 3 30 5 5 One One 26.7 26.8 2 2 0.5 100 compare
Example 1 Asphalt based coating waterproofing agent (thickness 2mm) compare
Example 2 Self-compacting sheet type waterproofing agent (thickness 3mm)

The AP 3 used herein was an SK (SK) energy product having an invasion degree of more than 80 and less than 100. Ginsonite was Indian, having a softening point of 160 ~ 190 ℃ and a carbon monochloride content of 95% or more. SBS rubber was made by C411 of Dynasol Co., which has 30:70 ratio of styrene and butadiene in China. The rosin resin was RP 1000 of Arizona Chemical, having an acid value of 15 mg KOH / g. The PE wax was Sasobit from Sasol, USA. In the case of the slag fine powder, three of the blast furnace slag powder for concrete produced from the three basic materials were used, and the slag aggregate was 0.1 to 2.5 mm of the fine aggregate manufactured in domestic S company. The natural fiber was GC 10 manufactured by JRS, USA. The carbon fiber used was a product of Mizubishi Rayon Co., Ltd., having a thickness of 50 탆 and a length of 1 mm. As the surfactant, WMX of Akzo Nobel Co. was used. The asphalt-based waterproofing agent is commercially available from domestic company H and the sheet waterproofing agent is commercially available from domestic company S.

As can be seen from Table 3, the performance of the conventional asphalt-based coating water repellent agent and the self-compacting sheet-type waterproofing agent were compared with those of the present invention, In the case of conventional asphalt-based membrane coating, the effect can be reduced to about 1/8 as compared with 2 hours. However, this is not correlated with the fact that the next process can be performed in actual construction, and the time required for complete curing is measured. In the comparative example, the time required for complete curing was 0.8 hours, whereas in Comparative Example 1, 72 hours was required. Also, in Comparative Example 2, it took 1.2 hours relatively short. This is because it is applied by melting the adhesive by the torch and then attaching the sheet. Therefore, since the heat escape must pass through the sheet after the sheet is attached, .

Item Example 1 Example 2 Example 3 Comparative Example 1 Remark Example 2 - Test Methods standard Touch-dry time (h) KS F 4932 Within 3 0.3 0.3 0.3 2 0.5 Complete curing time (h) - time 0.8 0.8 0.8 72 1.2 Tensile strength (MPa, no treatment) KS F 4932 1.5 or more 19 19 19 2.3 19 Shear bond strength (MPa, 20 캜) KS F 4932 0.15 or more 1.8 1.7 1.9 0.23 1.7 Elongation percentage (% KS F 4932 100 or more 300 300 300 200 300 Permeability KS F 4932 Pitcher
Not to be Not pitcher Not pitcher Not pitcher Not pitcher Not pitcher Chloride ion penetration resistance (coulombs) KS F 4932 Below 100 0.1 0.1 0.1 1.3 0.1 Inner indentation (number of repetitions) KS F 4932 Number of holes where holes have occurred 7 8 7 2 6 My fatigue KS F 4932 However,
No breakage clear clear clear clear clear Crack resistance (20 ° C, 20 ° steel bar) KS F 4932 However,
No breakage clear clear clear Fracture Fracture

Accordingly, the carbon fiber used in the present invention rapidly releases heat to the outside, thereby achieving a complete curing time faster than other materials. One advantage of this is that the construction period can be shortened. The hardening time required for repairing existing roads is most effective within 2 hours. If the cutting, cleaning, surface treatment and waterproofing process of the concrete road surface are carried out sequentially, the total blocking time from the overall process to the final process completion time is 8 hours. If the time exceeds 2 hours, And the total construction cost is increased. In general, when a full curing time of 4 hours is required, it is known that the construction cost with the material of full curing time of 2 hours is doubled. Physical properties The inventive step is to increase the tensile strength.

The tensile strength of the embodiment of the present invention is 19 MPa, which is about 8.3 times higher than that of the conventional coating film 2.3, and it is excellent in comparison with the sheet type recycled at the factory. Particularly, the dullness is an index of leakage due to the occurrence of holes caused by long-term use by the wheels of an automobile. The duration of the internal dent resistance was found to be about 7 to 8 times in the case of the embodiment, whereas in the case of the coating type, The sheets were measured to be superior to the six repeated tests, but were not superior to the present invention.

In addition, the endothelial and intrinsic cracking properties of the present invention are superior to those of conventional products, and thus, the improvement of the conformity can be confirmed objectively. The biggest advantage of the coating waterproofing agent is that it can secure the integrity with the surface. It is possible to treat the large area easily, but it takes a long time It has been dismissed at the maintenance site because of the disadvantage that it is necessary. In order to overcome this problem, it has been pointed out that the disadvantages of the non-bonding between the non-bonding and the sheet in the curved surface are the biggest disadvantage of the sheet, It has been confirmed that it is a very useful invention for the repair of concrete including the merits of sheet as well as the advantage of being able to rapidly treat a large area as a shortening and a coating waterproofing agent.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical idea underlying the invention are included in the scope of the present invention

Claims (4)

1 to 87.6 wt% asphalt binder;
1 to 25% by weight gilsonite;
1 to 10% by weight of SBS rubber;
0.1 to 3% by weight of rosin resin;
0.1 to 3% by weight of PE wax;
5 to 24% by weight of slag fine powder;
5 to 24% by weight of slag aggregate;
0.1 to 5% by weight of natural fibers;
0.1 to 3% by weight of carbon fiber; And
0.01 to 2% by weight of a surfactant
Wherein the waterproofing composition comprises a water-insoluble asphalt-based waterproofing composition. The method according to claim 1,
The asphalt binder is contained in an amount of 10 to 30% by weight,
The gilsonite has a softening point of 150 to 200 DEG C,
The weight ratio of styrene to butadiene in the SBS rubber is 25:75 to 35:65,
The slag fine powder has a specific surface area of 4,000 to 5,000 cm ² / g,
Wherein the slag aggregate has a diameter of 0.1 to 2.5 mm and a water absorption rate of 1.0% or less. A method for producing a complex waterproofing composition of a quick-setting type asphalt coating composition according to claim 1,
(1) melting the petroleum asphalt, natural asphalt gillsonite and SBS rubber;
(2) dispersing the surfactant;
(3) dispersing the natural fibers and the carbon fibers and the filler;
(4) lowering viscosity with the rosin resin and the PE wax; And
(5) Aging step
Wherein the water-repellent asphalt-based composite waterproofing composition further comprises a water-soluble organic solvent. The method of claim 3,
(1) the temperature of the melting step is 180 to 230 ° C, the melting time is 30 to 90 minutes,
The temperature in the step (2) is 160 to 200 ° C, the time is 3 to 10 minutes,
In the step (3), the temperature is 160 to 200 ° C, the time is 20 to 40 minutes,
Wherein the temperature of the step (4) is in the range of 140 to 180 ° C, and the time is 10 to 20 minutes.

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