CN110937922B - Anti-skid surface treatment method for limestone asphalt pavement - Google Patents
Anti-skid surface treatment method for limestone asphalt pavement Download PDFInfo
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- CN110937922B CN110937922B CN201911235828.4A CN201911235828A CN110937922B CN 110937922 B CN110937922 B CN 110937922B CN 201911235828 A CN201911235828 A CN 201911235828A CN 110937922 B CN110937922 B CN 110937922B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/70—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an anti-skid surface treatment method of a limestone asphalt pavement, which comprises the following steps: step 1: mixing and stirring the lithium silicate and the silicone acrylic emulsion uniformly to obtain a lithium silicate composite solution; step 2: mixing and stirring the magnesium chloride curing agent and the waterborne acrylic acid system drier uniformly to obtain an auxiliary agent; and step 3: spraying the lithium silicate composite solution obtained in the step (1) on a limestone asphalt pavement, then spreading carborundum on the limestone asphalt pavement, and finally spraying the auxiliary agent obtained in the step (2) on the limestone asphalt pavement; and 4, step 4: and (4) carrying out curing and drying treatment on the limestone asphalt pavement to finish the anti-skid surface treatment on the limestone asphalt pavement. The anti-skid surface treatment method for the limestone asphalt pavement can improve the anti-skid performance of the limestone asphalt pavement, and can also improve the anti-permeability performance, the flame retardant performance and the oil stain resistance of the pavement.
Description
Technical Field
The invention belongs to the field of asphalt pavement maintenance, and particularly relates to an anti-skid surface treatment method for a limestone asphalt pavement.
Background
Asphalt pavement is one of the most common pavement surface layer forms at present, but under the interaction of traffic load and environmental factors, the reduction of the skid resistance of the pavement is inevitable, and the threat to the driving safety is caused. In order to ensure that the pavement has good skid resistance and durability, basalt, diabase and other wear-resistant aggregates are often adopted when building the surface layer of a high-grade highway. But the storage capacity of the wear-resistant aggregates such as basalt is small in China, the distribution is uneven, and the aggregates are almost exhausted along with the consumption. Meanwhile, the limestone is widely distributed, is easy to obtain and has good adhesion with the asphalt. Limestone, however, is typically used for the surface layers of second and lower grade highways, and rarely for the upper surface layers of high grade asphalt pavements. This is because the mechanical properties of limestone are inferior to those of basalt, and especially the abrasion resistance is much inferior to that of basalt. When the surface of the asphalt pavement is built by limestone, although the anti-skid performance can meet the requirements in completion and acceptance, the anti-skid performance is quickly attenuated, and after the asphalt pavement is started for 3-5 years, the pavement does not have serious pavement diseases such as rutting, loosening and the like, but the anti-skid performance cannot meet the use requirements, so that serious potential safety hazards are caused.
The additional paving of the overlay is one of the important means for solving the problem of the reduction of the skid resistance of the pavement. Currently, the principal forms of finishes are slurry seals, micro-surfacing, stone chip seals and wearing layers. But the slurry seal and the micro-surfacing are mainly paved aiming at the aging, water seepage or slight cracks of the pavement, and the anti-skid performance of the pavement is not obviously improved; the stone chip seal can effectively improve the skid resistance of the pavement, but the stone chip seal has high construction process requirement and poor durability, and is easy to loose after being paved, so the stone chip seal is rarely used for high-grade highways; the addition of the wearing layer is obvious in improvement of the skid resistance of the pavement, but the wearing layer is paved aiming at pavement defects such as ruts, cracks, looseness and the like of the pavement, and the addition of the wearing layer is not economical when the skid resistance of the pavement is insufficient.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an anti-skid surface treatment method for a limestone asphalt pavement, which solves the problems of high manufacturing cost, large carbon emission and large construction difficulty of the existing anti-skid surface treatment technology.
In order to solve the technical problems, the invention solves the problems by the following technical scheme:
an anti-skid surface treatment method for a limestone asphalt pavement comprises the following steps:
step 1: mixing and stirring the lithium silicate and the silicone acrylic emulsion uniformly to obtain a lithium silicate composite solution;
step 2: mixing and stirring the magnesium chloride curing agent and the waterborne acrylic acid system drier uniformly to obtain an auxiliary agent;
and step 3: spraying the lithium silicate composite solution obtained in the step (1) on a limestone asphalt pavement, then spreading carborundum on the limestone asphalt pavement, and finally spraying the auxiliary agent obtained in the step (2) on the limestone asphalt pavement;
and 4, step 4: and (4) carrying out curing and drying treatment on the limestone asphalt pavement to finish the anti-skid surface treatment on the limestone asphalt pavement.
Further, in step 1, by mass, 80 parts of lithium silicate and 20 parts of silicone-acrylic emulsion are used.
Further, in the step 2, by mass, the magnesium chloride curing agent is 5 parts, and the aqueous acrylic acid system drier is 11 parts.
Further, in the step 3, 16.6-40 parts by mass of carborundum is used.
Further, in the step 1, the lithium silicate and the silicone acrylic emulsion are stirred at the temperature of 25 ℃, the stirring speed is 400r/min, and the stirring time is 10 min.
Further, in the step 2, the magnesium chloride curing agent and the waterborne acrylic acid system drier are stirred at the temperature of 25 ℃, the stirring speed is 100r/min, and the stirring time is 5 min.
Further, in the step 3, the carborundum is scattered on the limestone asphalt pavement by adopting a standard sieve, and the aperture of the standard sieve is 0.15 mm.
Further, in step 3, before spraying the lithium silicate composite solution on the limestone asphalt pavement, polishing the limestone asphalt pavement.
Further, in the step 4, the curing temperature is 25 ℃ and the curing time is 24 hours.
Compared with the prior art, the invention has at least the following beneficial effects:
according to the anti-skid surface treatment method for the limestone asphalt pavement, lithium silicate and silicone-acrylic emulsion are single and uniform liquids, and lithium silicate particles and emulsion particles can be combined into larger particles in a lithium silicate composite solution; the particle size distribution of the composite solution shows that only one single peak exists, the composite solution is a uniform solution, and the lithium silicate and the emulsion are well dispersed in the composite solution. Meanwhile, after the lithium silicate composite solution is sprayed, the texture value of the limestone is 28.19 and 28.66, and the texture value of the limestone is increased by only 2-3% compared with the texture value of the limestone after accelerated polishing, which shows that the texture structure of the limestone is improved by spraying the lithium silicate-emulsion, so that the anti-skid property of the limestone asphalt pavement can be improved, and the anti-permeability property, the flame retardant property and the oil stain resistance of the pavement can also be improved. After the lithium silicate composite solution and the limestone are blended, no new functional group appears on an infrared spectrum, which shows that no chemical bonding action exists between the lithium silicate composite solution and the limestone, and shows that the adhesion behavior between the lithium silicate composite solution and the limestone is only simple physical adsorption, so that the lithium silicate composite solution has better environmental protection property and lower cost, and the cost of the invention is about one third of that of the anti-sliding seal layer through tests. In addition, the method does not need heating treatment in the implementation process, has low carbon emission and is beneficial to sustainable development.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Lithium silicate is a series of compounds produced by the reaction of metallic lithium and silicic acid, and is mainly classified as lithium monosilicate (Li)8SiO6、Li4SiO4、Li2SiO3) Lithium disilicate (Li)6Si2O7、Li2Si2O5) And lithium pentasilicate (Li)2Si5O11). In addition, aqueous solutions of lithium polysilicate are also known as lithium water glass, also referred to simply as lithium silicate gel. Lithium silicate materials have many excellent properties, such as good tritium solubility, mechanical properties, physical and chemical stability, and compatibility with structural materials, and are therefore widely used in the preparation of coatings, surface treatment agents, and environmentally friendly materials. Meanwhile, in the field of building engineering, lithium silicate can be used as a compacting agent, and the surface hardness and the impermeability of the cement concrete can be improved through the treatment of the lithium silicate. The application of the lithium silicate and the emery to the anti-skid surface of the asphalt pavement is a novel pavement maintenance technology, the anti-skid performance of the pavement can be improved, a certain effect on the anti-seepage, oil stain resistance and flame retardant performance of the pavement is achieved, the lithium silicate is non-toxic and harmless, the construction can be carried out at normal temperature, and the development concept of low carbon and environmental protection is met.
As a specific embodiment of the present invention, a method for anti-skid surface treatment of a limestone asphalt pavement includes the steps of:
step 1: uniformly mixing and stirring lithium silicate with a modulus of 4.8 and silicone acrylic emulsion at 25 ℃, at a stirring speed of 400r/min for 10min to obtain a lithium silicate composite solution, wherein the lithium silicate and the silicone acrylic emulsion comprise 80 parts by mass of lithium silicate and 20 parts by mass of silicone acrylic emulsion; in the embodiment, the modulus of the lithium silicate is 4.8, and the solid content of the propyl silicate emulsion is 49%;
step 2: mixing and stirring the magnesium chloride curing agent and the waterborne acrylic acid system drier uniformly, wherein the stirring temperature is 25 ℃, the stirring speed is 100r/min, and the stirring time is 5min to obtain an auxiliary agent, wherein the magnesium chloride curing agent and the waterborne acrylic acid system drier comprise 5 parts by mass of the magnesium chloride curing agent and 11 parts by mass of the waterborne acrylic acid system drier; in the embodiment, the concentration of the magnesium chloride curing agent is 20%, and the solid content of the aqueous acrylic acid system drier is 30%;
and step 3: polishing the limestone asphalt pavement, spraying the lithium silicate composite solution obtained in the step (1) on the limestone asphalt pavement, then spreading diamond dust on the limestone asphalt pavement by adopting a standard sieve, wherein the aperture of the standard sieve is 0.15mm, the mass fraction of the diamond dust is 16.6-40 parts, and finally spraying the auxiliary agent obtained in the step (2) on the limestone asphalt pavement; in the present embodiment, the grain size of the corundum is 140 mesh;
and 4, step 4: and (3) curing and drying the limestone asphalt pavement, wherein the curing temperature is 25 ℃, the curing time is 24 hours, and the anti-skid surface treatment of the limestone asphalt pavement is completed.
To better illustrate the technical solution of the present invention, the following examples are given.
Example 1
Loading the mixed limestone-asphalt mixture into a rutting test mold according to a rule, performing reciprocating rolling for 12 times, demolding to obtain a limestone-asphalt test piece, polishing the upper surface of the test piece by using an angle grinder, grinding off asphalt on the surface of the test piece, and wiping the test piece clean by using a wet ragAir drying in a ventilated place; mixing and stirring lithium silicate and silicone acrylic emulsion uniformly, wherein the stirring temperature is 25 ℃, the stirring speed is 400r/min, and the stirring time is 10min, so as to obtain a lithium silicate composite solution, wherein the lithium silicate in the lithium silicate composite solution is 80 parts, and the silicone acrylic emulsion is 20 parts; mixing and stirring the magnesium chloride curing agent and the waterborne acrylic system drier uniformly, wherein the stirring temperature is 25 ℃, the stirring speed is 100r/min, and the stirring time is 5min to obtain an auxiliary agent, wherein the magnesium chloride curing agent accounts for 5 parts of the auxiliary agent, and the waterborne acrylic system drier accounts for 11 parts of the auxiliary agent; pouring the lithium silicate composite solution into a spray pot, and uniformly spraying the lithium silicate composite solution on the surface of a test piece, wherein the spraying amount of the lithium silicate composite solution is 50g/m2(ii) a Spreading emery with a standard sieve of 0.15mm to the surface of the test piece, wherein the spreading amount of the emery is 20g/m2In order to ensure uniform spreading, a fixed amount of diamond dust should be spread in multiple times; uniformly spraying the auxiliary agent on the surface of the test piece by using a spraying pot, wherein the spraying amount of the auxiliary agent is 8g/m2And finally, curing the test piece at 25 ℃ for 24 hours.
Example 2
Example 2 is different from example 1 in that the amount sprayed of the lithium silicate composite solution is 100g/m2The spraying amount of the auxiliary agent is 16g/m2The spreading amount of the carborundum is 30g/m2。
Example 3
Example 3 is different from example 1 in that the amount sprayed of the lithium silicate composite solution is 200g/m2The spraying amount of the auxiliary agent is 32g/m2The spreading amount of the carborundum is 40g/m2。
Example 4
Example 4 is different from example 1 in that the amount sprayed of the lithium silicate composite solution is 300g/m2The spraying amount of the auxiliary agent is 48g/m2The spreading amount of the carborundum is 50g/m2。
Comparative example
The limestone asphalt test piece is only subjected to polishing treatment, but is not treated by adopting the embodiment of the invention.
The accelerated wear test, the temperature change resistance test, the oil stain resistance test, the flame retardant test and the water seepage test are carried out on the examples 1 to 4 and the comparative example, the influence of the sprayed sand-containing lithium silicate on the road performance of the asphalt mixture (namely the influence of the invention on the performance of the limestone asphalt road) is analyzed, and various test conditions and test results are as follows:
1. durability against sliding
Referring to the field test regulation JTG-E60-2008 of highway subgrade and pavement, the influence of the spraying amount of the lithium silicate composite solution on the skid resistance and durability of the limestone asphalt concrete is analyzed by performing an accelerated wear test on the limestone asphalt test piece treated by the embodiment of the invention. The test results are shown in table 1:
TABLE 1
As can be seen from the results of the pendulum initial value test and the final value in Table 1, the pendulum value of the test piece increased from 48.5 to about 62, when the pendulum value increased with the increase of the sprinkling amount, and the pendulum value increased from 200g/m2Increased to 300g/m2And the initial skid resistance of the pavement can be improved by spraying the sand-containing lithium silicate. The stable final value of the pendulum value of the test piece is almost the same as that of the non-sprayed sand-containing lithium silicate, and is about 41, and then the stable final value of the pendulum value is improved along with the increase of the spraying amount of the sand-containing lithium silicate, which shows that the sprayed sand-containing lithium silicate can play a better role in protecting the edges and corners of the surface of the mixture, thereby improving the skid resistance of the pavement.
In conclusion, after being polished, the spraying of the sand-containing lithium silicate on the surface of the asphalt mixture can improve the initial swing value and the stable final value after abrasion, and the range is increased firstly along with the increase of the spraying amount and then is stable, which shows that the sprayed material can improve the anti-skid durability of the asphalt mixture.
2. Resistance to temperature change
The temperature change resistance performance of the coating of the building paint is tested in the examples 1 to 4 by referring to the 'testing method for freeze-thaw resistance cycle of the coating of the building paint', and the test results are shown in the following table 2:
TABLE 2
| - | Example 1 | Example 2 | Example 3 | Example 4 |
| Pendulum value difference | -2 | -1.5 | -1 | -1.5 |
As shown in Table 2, the swing values of all the test pieces after freeze thawing are reduced by a small degree compared with that before freeze thawing, which is caused by falling off of a small part of floating sand on the surface of the test piece after freeze thawing; meanwhile, compared with the test piece before freeze thawing, the drop amplitude of the swing value of each test piece after freeze thawing is within 5 percent, which shows that the test piece after freeze thawing still has good anti-sliding capability, and shows that the sand-containing lithium silicate has good temperature change resistance.
3. Resistance to scouring test
The designed scouring resistance test is used for evaluating the scouring resistance of the sand-containing lithium silicate, and is realized by simulating rain erosion, and the main experimental process is divided into three steps: the first step is the preparation of a test piece, and the preparation method is the same as the method in the temperature change resistance performance test; secondly, scouring and soaking, namely scouring the surface of the sand-containing lithium silicate test piece by using a high-pressure water gun for 20min, and soaking the whole washed test piece in 3% sodium chloride solution for 24 h; and finally, observing the change of the test piece, namely taking out the test piece, airing the test piece for 1 hour at room temperature, then observing whether the surface of the test piece falls off or not, and evaluating the anti-scouring performance of the sand-containing lithium silicate by comparing images before and after scouring, wherein the water outlet pressure of the high-pressure water gun is 4.5MPa, and the vertical distance from the high-pressure water gun to the test piece is about 1 m. The test results are shown in table 3:
TABLE 3
| - | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 |
| Difference of oscillation before and after flushing | 0.1 | 1.9 | 1.5 | 0.8 | 1.6 |
As can be seen from the data in Table 3, the results of the scouring test show that after the high-pressure water scouring action, the swing values of the test pieces are slightly reduced compared with those before the scouring, and the reduction range is 6-8%, which is also caused by that a small part of floating sand on the surface of the test piece is not firmly adhered and is scoured off under the high-pressure water scouring action, and the material at the anti-sliding surface has good scouring resistance.
4. Water penetration test
The permeability resistance of a test piece sprayed with sand-containing lithium silicate is tested by referring to a water permeability coefficient measuring method in road engineering asphalt and asphalt mixture test procedures (JTG E20-2011), and the permeability resistance is evaluated by the water permeability coefficient. The test results are shown in table 4:
TABLE 4
| - | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 |
| Water permeability coefficient (ml/min) | 22 | 21 | 12 | 0 | 0 |
As shown in Table 4, in the water seepage test, the water seepage coefficient of the asphalt mixture is reduced along with the increase of the spreading amount until the asphalt mixture is not seeped, which shows that the spreading of the anti-skid surface material can obviously improve the anti-seepage performance of the asphalt mixture.
Oil stain resistance test
The method adopts a Kentaberg flying test to evaluate the oil stain resistance of the sand-containing lithium silicate, and comprises the following specific steps: compacting and molding a Marshall test piece, polishing, spraying sand-containing lithium silicate, curing at room temperature for 24 hours, and soaking the Marshall test piece in diesel oil for 5 hours. Taking out the Marshall test piece after being immersed in oil, wiping off diesel oil on the surface of the test piece, placing the test piece at a ventilated place for air drying at normal temperature, finally carrying out Kentusburg scattering experiment according to road engineering asphalt and asphalt mixture test regulation T0733-plus 2011, finally calculating the scattering loss rate, wherein the number of parallel test pieces of each test piece is 3, and finally taking the average value of each test piece. The test results are shown in table 5:
TABLE 5
| - | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 |
| Rate of scattering loss | 39.4 | 38.3 | 35.6 | 30.7 | 28.6 |
As shown in Table 5, when the lithium silicate composite solution was sprayed in an amount of 200g/m2Scattering loss ratio of Marshall test pieceThe spraying amount is reduced from 40 percent to about 30 percent, which shows that the spraying amount at the moment can seal the channels on the upper surface and the lower surface, thereby delaying the diesel oil from entering the inside of the test piece to a certain extent, reducing the probability of the test piece being corroded by oil, and simultaneously the spraying amount is 300g/m2The time scattering loss rate and 200g/m2The difference is very small, which indicates that the spreading amount is 200g/m2The oil stain resistance of the test piece is optimal, which shows that the spreading of the anti-sliding surface material can obviously improve the oil stain resistance of the asphalt mixture.
5. Flame retardant properties
The main constituent materials of the lithium silicate composite solution, namely lithium silicate and the emulsion, are materials with excellent flame retardant property, so that the lithium silicate composite solution is sprayed on the pavement, and the flame retardant property of the asphalt pavement is expected to be improved. The flame retardant performance of the asphalt concrete sprayed with the lithium silicate composite solution is researched through an autonomous design test. The test methods are as follows: compacting a molded Marshall test piece → polishing the test piece → spraying the lithium silicate containing sand and curing → weighing the mass of the test piece → soaking in diesel oil for 5s → burning the test piece → weighing the mass of the test piece after burning. The test results are shown in tables 6 and 7:
TABLE 6
| - | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 |
| Time of combustion | 115 | 112 | 108 | 105 | 107 |
TABLE 7
| - | Comparative example | Example 1 | Example 2 | Example 3 | Example 4 |
| Loss of mass | 24.7 | 27.3 | 26.2 | 20.9 | 19.8 |
As is clear from tables 6 and 7, the burning time of the test pieces decreased with the increase in the amount of the lithium silicate containing sand, and when the amount was 300g/m2The combustion time is about 105s, which is shortened by about 10s compared with the comparative sample; secondly, the mass loss after burning of the test piece increases with the amount of the sand-containing lithium silicate sprayedThe mass loss of the test piece which is not sprayed is about 25g, and the spraying amount is 300g/m2The mass loss of the test piece of (2) is only 20g, which is reduced by about one fifth because the sprayed sand-containing lithium silicate hinders the combustion of the upper and lower surfaces of the test piece.
From the above analysis, it is found that spraying of the sand-containing lithium silicate not only shortens the combustion time but also reduces the quality loss after combustion, and therefore, it is still effective in flame retardancy.
The reagents used in the present invention are commercially available, and the methods used in the present invention are conventional methods unless otherwise specified.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. An anti-skid surface treatment method for a limestone asphalt pavement is characterized by comprising the following steps:
step 1: mixing and stirring the lithium silicate and the silicone acrylic emulsion uniformly to obtain a lithium silicate composite solution; according to the mass parts, the lithium silicate is 80 parts, and the silicone acrylic emulsion is 20 parts; stirring the lithium silicate and the silicone acrylic emulsion at 25 ℃, wherein the stirring speed is 400r/min, and the stirring time is 10 min;
step 2: mixing and stirring the magnesium chloride curing agent and the waterborne acrylic acid system drier uniformly to obtain an auxiliary agent; according to the mass parts, the magnesium chloride curing agent is 5 parts, and the water-based acrylic acid system drier is 11 parts; the magnesium chloride curing agent and the waterborne acrylic acid system drier are stirred at 25 ℃, the stirring speed is 100r/min, and the stirring time is 5 min;
and step 3: spraying the lithium silicate composite solution obtained in the step (1) on a limestone asphalt pavement, then spreading carborundum on the limestone asphalt pavement, and finally spraying the auxiliary agent obtained in the step (2) on the limestone asphalt pavement; 16.6-40 parts of carborundum by mass;
and 4, step 4: and (4) carrying out curing and drying treatment on the limestone asphalt pavement to finish the anti-skid surface treatment on the limestone asphalt pavement.
2. The method of claim 1, wherein in step 3, the silicon carbide is spread on the limestone asphalt pavement by using a standard sieve, and the pore diameter of the standard sieve is 0.15 mm.
3. The slip-resistant surface treatment method of limestone asphalt pavement according to claim 1, wherein the limestone asphalt pavement is ground before spraying the lithium silicate composite solution to the limestone asphalt pavement in the step 3.
4. The anti-skid surface treatment method for the limestone asphalt pavement according to claim 1, wherein in the step 4, the curing temperature is 25 ℃ and the curing time is 24 hours.
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| CN104016714A (en) * | 2014-05-05 | 2014-09-03 | 哈尔滨理工大学 | Cement sealing and solidifying agent and construction technique thereof |
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| CN105256690A (en) * | 2015-11-09 | 2016-01-20 | 重庆诚邦路面材料有限公司 | Fine surface processing method for single-layer paved bituminous pavement |
| CN105860554B (en) * | 2016-04-21 | 2019-10-01 | 天津市公路工程总公司 | It is a kind of to coagulate antiskid type mist sealing material and preparation method fastly |
| CN108275901B (en) * | 2018-02-02 | 2019-07-02 | 北京弋宸时代科技有限公司 | A kind of surface strengthening material of cement concrete road surface and preparation method thereof |
| KR101934500B1 (en) * | 2018-07-31 | 2019-01-02 | 주식회사 지케이기술연구소 | Guss Asphalt Concrete Composition for Paving Which Comprising SIS, SBS and Aggregate-powder of Improved Grain Size for Improving Waterproof and Constructing Methods Using Thereof |
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