A highly weather-resistant road brick formed using solid waste

Abstract

The present invention relates to the technical field of brick materials, and particularly relates to a highly weather-resistant road brick formed by using solid waste, comprising the following raw materials in parts by weight: 45-50 parts of portland cement, 18-22 parts of quartz stone corner waste, 20-30 parts of quartz stone precipitation slag, 5-10 parts of large-grained rock, 10-15 parts of effective assistant with doped and modified filler, 8-12 parts of construction waste, 7-11 parts of stabilizer adjusted based on montmorillonite, 6-10 parts of blast furnace slag, 6-10 parts of tailings iron powder, and 30-35 parts of water. The highly weather-resistant road brick of the present invention uses portland cement, quartz stone corner waste, quartz stone precipitation slag, large-grained rock in combination with construction waste, blast furnace slag, and tailings iron powder as raw materials. Through the reuse of waste, and at the same time adding the effective assistant with doped and modified filler and the stabilizer adjusted based on montmorillonite to cooperate with each other, the obtained road brick product has coordinated improvements in strength, wear resistance, and thermal conductivity.

Description

Technical Field

[0001] The present invention relates to the technical field of brick materials, and particularly relates to a highly weather-resistant road brick formed by using solid waste. Background Art

[0002] At present, for places such as sidewalks or green belts, it is often necessary to lay floor tiles, which are not only beautiful and convenient for pedestrians to pass through, but also can isolate the soil, which is beneficial to the modernization construction of the city. The luminous road brick embeds a photovoltaic panel on the road brick and uses solar energy to provide electricity for the luminous road brick. It is not only energy-saving and environmentally friendly, but also does not require an external circuit to be connected to the luminous road brick, making the laying of the luminous road brick simpler.

[0003] For the road brick matrix used in the luminous road brick made of solid waste, the raw material process is simple, the strength performance of the made road brick is poor, and it is difficult to coordinately improve the strength, wear resistance and thermal conductivity of the road brick, and the freeze-heat resistance, weather resistance and water stability of the product are poor, which limits the use efficiency of the product. Summary of the Invention

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a highly weather-resistant road brick formed by using solid waste to solve the problems raised in the above background art.

[0005] The present invention solves the technical problems by adopting the following technical solutions:

[0006] The present invention provides a highly weather-resistant road brick formed by using solid waste, which comprises the following raw materials in parts by weight:

[0007] 45-50 parts of portland cement, 18-22 parts of quartz stone corner waste, 20-30 parts of quartz stone precipitation slag, 5-10 parts of large-grained rock, 10-15 parts of effective assistant doped with modified filler, 8-12 parts of construction waste, 7-11 parts of stabilizer adjusted based on montmorillonite, 6-10 parts of blast furnace slag, 6-10 parts of tailing iron powder and 30-35 parts of water;

[0008] The preparation method of the highly weather-resistant road brick is: weighing the raw materials according to parts by weight, adding the weighed raw materials into a mixer and stirring evenly for 2 hours at a stirring speed of 1000-1500 r / min. After stirring, it is formed in a mold, and then demolded and cured for 12 days at a curing temperature of 40-45 °C. After curing, the highly weather-resistant road brick of the present invention is obtained.

[0009] Preferably, the highly weather-resistant road brick comprises the following raw materials in parts by weight:

[0010] 47.5 parts of portland cement, 20 parts of quartz stone waste, 25 parts of quartz stone precipitate slag, 7.5 parts of large particle rock, 12.5 parts of doping modified filler synergist, 10 parts of construction waste, 9 parts of montmorillonite-based regulator, 8 parts of blast furnace slag, 8 parts of tailings iron powder and 32.5 parts of water.

[0011] Preferably, the particle size of the large particle rock is 2 - 4 mm; the large particle rock is one of granite, basalt and sandstone; the particle size of the quartz stone waste is 3 mm; the quartz stone precipitate slag is the slag precipitated during the processing of quartz stone, and the particle size is 2 mm;

[0012] The iron grade of the tailings iron powder > 60%, and the SiO2 content is 3 - 8 wt.%.

[0013] The construction waste also undergoes pretreatment, and the specific treatment method is:

[0014] Place the construction waste in a sufficient amount of 5% sulfuric acid solution and stir well, then wash with water and dry. Send the dried construction waste into a crusher and crush it through 200 meshes.

[0015] Preferably, the preparation method of the doping modified filler synergist is:

[0016] S11: Add nano boron nitride to a 5% yttrium nitrate solution according to a weight ratio of 2:5, and then add 5 - 8% of stearic acid based on the total amount of nano boron nitride, and stir well to obtain nano boron nitride liquid;

[0017] S12: Preheat nano titanium dioxide at 60 - 65 °C for 1 - 2 h, and then add 3 - 5 parts of preheated nano titanium dioxide, 1 - 3 parts of tetrabutyl titanate, and 1 - 2 parts of silane coupling agent to 5 - 8 parts of sodium lignosulfonate solution and stir well to obtain modified nano titanium dioxide agent;

[0018] S13: Blend and ultrasonically process the modified nano titanium dioxide agent and nano boron nitride liquid according to a weight ratio of 2:5. After the ultrasonic treatment ends, obtain the nano boron nitride modified nano titanium dioxide synergistic liquid;

[0019] S14: First, stir and mix the coal gangue in a sufficient amount of 5% hydrochloric acid solution, then wash with water, filter by suction and dry;

[0020] Heat-treat the dried coal gangue at 210 - 220 °C for 10 - 15 min, and then cool it to 60 °C at a rate of 1 - 3 °C / min and keep it warm;

[0021] S15: Mix the heat-insulated coal gangue and the nano boron nitride-modified nano titanium dioxide synergistic solution in a weight ratio of 5:3, perform ball milling treatment at a ball milling speed of 1500 r / min for 2 h. After the ball milling is completed, perform suction filtration and drying to obtain the synergistic agent doped with the modified filler.

[0022] Preferably, the mass fraction of the sodium lignosulfonate solution is 4-6%; the silane coupling agent is silane coupling agent KH560;

[0023] Preferably, the ultrasonic power of the co-blending ultrasonic treatment is 350-400 W, and the ultrasonic time is 20-30 min.

[0024] Preferably, the preparation method of the stabilizer adjusted based on montmorillonite is as follows:

[0025] S101: Irradiate the glass fiber in a proton irradiation chamber for 10-15 min at an irradiation power of 350-400 W. After the irradiation is completed, obtain the irradiated glass fiber;

[0026] Immerse the irradiated glass fiber into a lanthanum nitrate solution that is 4-6 times the total amount of the irradiated glass fiber, and stir well to obtain a glass fiber solution;

[0027] S102: Mix the glass fiber solution and the montmorillonite stabilizer in a weight ratio of 7:5, perform ball milling treatment at a ball milling speed of 1000-1500 r / min for 2 h. After the ball milling is completed, perform suction filtration and drying to obtain the stabilizer adjusted based on montmorillonite.

[0028] Preferably, the mass fraction of the lanthanum nitrate solution is 3-5%.

[0029] Preferably, the montmorillonite stabilizer includes the following raw materials in parts by weight:

[0030] 5-8 parts of montmorillonite, 1-2 parts of cerium oxide, 2-5 parts of hydrochloric acid dopamine solution, 6-10 parts of sodium citrate solution, and 2-4 parts of calcium sulfate whiskers.

[0031] Preferably, the mass fraction of the hydrochloric acid dopamine solution is 2-5%; the mass fraction of the sodium citrate solution is 4-6%.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The high weather resistance road bricks of the present invention adopt portland cement, quartz stone corner waste, quartz stone precipitation slag, large particle rocks, combined with construction waste, blast furnace slag, and tailing iron powder raw materials. Through the reuse of waste, and at the same time adding the synergistic agent of the doped and modified filler and the stabilizer adjusted based on montmorillonite, the two cooperate and synergistically effect, so that the strength, wear resistance and thermal conductivity of the obtained road brick products are coordinately improved. At the same time, the freeze-heat resistance, weather resistance and water stability of the products are remarkable;

[0034] In the preparation of the auxiliary agent of the doped modified filler, nano boron nitride is combined with yttrium nitrate solution and stearic acid, and the raw materials are coordinated and matched. At the same time, nano titanium dioxide is preheated to optimize its active efficiency, and then the preheated nano titanium dioxide, tetrabutyl titanate, silane coupling agent and sodium lignin sulfonate solution are fully stirred, and the raw materials are coordinated and matched, and nano boron nitride liquid is combined, and the nano boron nitride liquid and modified nano titanium dioxide agent are coordinated and coordinated, and then the coal gangue system is reinforced. The coal gangue is stirred and mixed in a hydrochloric acid solution, and then heat-treated at 210-220° C. for 10-15 minutes, and then cooled to 60° C. at a rate of 1-3° C. / min. The active efficiency of the coal gangue is enhanced by improved and optimized treatment, and nano boron nitride is combined with the auxiliary liquid of nano titanium dioxide to reinforce the system structure, so that the coordinated performance of the obtained product is improved, and the product has significant effects on freeze-heat resistance, weather resistance and water resistance stability;

[0035] The stabilizer based on montmorillonite adjustment uses glass fiber that has been irradiated to optimize the activity performance of the glass fiber, and then optimizes and improves the glass fiber through the combination of lanthanum nitrate solution. At the same time, it is further coordinated and optimized through the montmorillonite stabilizer. The montmorillonite, cerium oxide, dopamine hydrochloride solution, sodium citrate solution and calcium sulfate whiskers in the montmorillonite stabilizer are coordinated with each other. The montmorillonite lamellar structure is combined with the whisker structure to enhance the coordination effect of the montmorillonite stabilizer and the glass fiber, thereby obtaining the coordination effect of the stabilizer based on montmorillonite adjustment and the auxiliary agent doped with modified fillers, thereby further improving the performance of the product. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] A highly weather-resistant road brick formed from solid waste in this embodiment includes the following raw materials in parts by weight:

[0038] 45-50 parts of silicate cement, 18-22 parts of quartzite scraps, 20-30 parts of quartzite precipitated slag, 5-10 parts of large-grained rock, 10-15 parts of additives doped with modified fillers, 8-12 parts of construction waste, 7-11 parts of stabilizers based on montmorillonite adjustment, 6-10 parts of blast furnace slag, 6-10 parts of tailings iron powder and 30-35 parts of water;

[0039] The preparation method of the highly weather-resistant road brick is as follows: Weigh the raw materials according to weight parts, add the weighed raw materials into a blender and stir evenly for 2 hours at a stirring speed of 1000 - 1500 r / min. After the stirring is completed, put it into a mold for molding, and then demold and cure for 12 days at a curing temperature of 40 - 45 °C. After the curing is completed, the highly weather-resistant road brick of the present invention is obtained.

[0040] The highly weather-resistant road brick of this embodiment comprises the following raw materials in weight parts:

[0041] 47.5 parts of portland cement, 20 parts of quartz stone corner waste, 25 parts of quartz stone precipitation slag, 7.5 parts of large particle rock, 12.5 parts of effective assistant of doped and modified filler, 10 parts of construction waste, 9 parts of stabilizer adjusted based on montmorillonite, 8 parts of blast furnace slag, 8 parts of tailings iron powder, and 32.5 parts of water.

[0042] Preferably, the particle size of the large particle rock is 2 - 4 mm; the large particle rock is one of granite, basalt, and sandstone; the particle size of the quartz stone corner waste is 3 mm; the quartz stone precipitation slag is the slag precipitated during the processing of quartz stone, and the particle size is 2 mm;

[0043] The iron grade of the tailings iron powder > 60%, and the SiO2 content is 3 - 8 wt.%.

[0044] The construction waste also undergoes pretreatment, and the specific treatment method is as follows:

[0045] Put the construction waste into a sufficient amount of 5% sulfuric acid solution and stir well, then wash with water and dry. Send the dried construction waste into a crusher and crush it through 200 meshes.

[0046] The preparation method of the effective assistant of the doped and modified filler of this embodiment is as follows:

[0047] S11: Add boron nitride nanometer according to a weight ratio of 2:5 into a 5% yttrium nitrate solution by mass fraction, and then add stearic acid accounting for 5 - 8% of the total amount of boron nitride nanometer, and stir well to obtain a boron nitride nanometer solution;

[0048] S12: Preheat titanium dioxide nanometer at 60 - 65 °C for 1 - 2 hours, and then add 3 - 5 parts of preheated titanium dioxide nanometer, 1 - 3 parts of tetrabutyl titanate, and 1 - 2 parts of silane coupling agent into 5 - 8 parts of sodium lignosulfonate solution and stir well to obtain a modified titanium dioxide nanometer agent;

[0049] S13: Blend and ultrasonically treat the modified titanium dioxide nanometer agent and the boron nitride nanometer solution according to a weight ratio of 2:5. After the ultrasonic treatment is completed, obtain an effective assistant solution of boron nitride-modified titanium dioxide nanometer.

[0050] S14: Stir and mix the coal gangue thoroughly in a sufficient amount of 5% by mass hydrochloric acid solution, then wash, filter and dry;

[0051] The dried coal gangue is then heat treated at 210-220°C for 10-15 minutes, then cooled to 60°C at a rate of 1-3°C / min, and kept warm;

[0052] S15: The heat-insulated coal gangue and the auxiliary liquid of nano boron nitride-modified nano titanium dioxide are mixed in a weight ratio of 5:3, and the mixture is ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is filtered and dried to obtain an auxiliary agent for doping and modifying the filler.

[0053] The mass fraction of the sodium lignin sulfonate solution in this embodiment is 4-6%; the silane coupling agent is silane coupling agent KH560;

[0054] The ultrasonic power of the blending ultrasonic treatment in this embodiment is 350-400 W, and the ultrasonic time is 20-30 min.

[0055] The preparation method of the stabilizer based on montmorillonite adjustment in this embodiment is:

[0056] S101: irradiating the glass fiber in a proton irradiation box for 10 to 15 minutes at an irradiation power of 350 to 400 W, and obtaining irradiated glass fiber after the irradiation is completed;

[0057] The irradiated glass fiber is immersed in a lanthanum nitrate solution of 4 to 6 times the total amount of the irradiated glass fiber and stirred sufficiently to obtain a glass fiber liquid;

[0058] S102: The glass fiber liquid and the montmorillonite stabilizer are mixed in a weight ratio of 7:5 and ball-milled at a speed of 1000-1500 r / min for 2 hours. After the ball milling is completed, the mixture is filtered and dried to obtain a stabilizer adjusted based on montmorillonite.

[0059] The mass fraction of the lanthanum nitrate solution in this embodiment is 3-5%.

[0060] The montmorillonite stabilizer of this embodiment includes the following raw materials in parts by weight:

[0061] 5 to 8 parts of montmorillonite, 1 to 2 parts of cerium oxide, 2 to 5 parts of dopamine hydrochloride solution, 6 to 10 parts of sodium citrate solution and 2 to 4 parts of calcium sulfate whiskers.

[0062] The mass fraction of the dopamine hydrochloride solution in this embodiment is 2-5%; the mass fraction of the sodium citrate solution is 4-6%.

[0063] Example 1.

[0064] A highly weather-resistant road brick formed using solid waste in this embodiment comprises the following raw materials in parts by weight:

[0065] 45 parts of portland cement, 18 parts of quartz stone edge waste, 20 parts of quartz stone precipitation slag, 5 parts of large particle rocks, 10 parts of effective auxiliaries doped with modified fillers, 8 parts of construction waste, 7 parts of stabilizer adjusted based on montmorillonite, 6 parts of blast furnace slag, 6 parts of tailings iron powder, and 30 parts of water;

[0066] The preparation method of the highly weather-resistant road brick is as follows: Weigh the raw materials according to the parts by weight, add the weighed raw materials into a mixer and stir evenly and sufficiently. The stirring speed is 1000 r / min, and stir for 2 h. After stirring ends, put it into a mold for forming, then demold and cure for 12 d. The curing temperature is 40 °C. After curing ends, the highly weather-resistant road brick of the present invention is obtained.

[0067] The particle size of the large particle rocks in this embodiment is 2 mm; among them, the large particle rocks are granite;

[0068] The iron grade of the tailings iron powder > 60%, and the SiO2 content is 3 wt.%;

[0069] The construction waste also undergoes pretreatment. The specific treatment method is as follows:

[0070] Place the construction waste in a sufficient amount of sulfuric acid solution with a mass fraction of 5% and stir fully, then wash with water and dry. Send the dried construction waste into a pulverizer and pulverize it through 200 meshes.

[0071] The preparation method of the effective auxiliaries doped with modified fillers in this embodiment is as follows:

[0072] S11: Add nano boron nitride to a yttrium nitrate solution with a mass fraction of 5% according to a weight ratio of 2:5. Subsequently, add stearic acid accounting for 5% of the total amount of nano boron nitride, and stir fully to obtain nano boron nitride liquid;

[0073] S12: Preheat nano titanium dioxide at 60 °C for 1 h, then add 3 parts of preheated nano titanium dioxide, 1 part of tetrabutyl titanate, and 1 part of silane coupling agent to 5 parts of sodium lignosulfonate solution and stir fully to obtain modified nano titanium dioxide agent;

[0074] S13: Blend the modified nano titanium dioxide agent and nano boron nitride liquid according to a weight ratio of 2:5 and perform ultrasonic treatment. After ultrasonic treatment ends, obtain an effective auxiliary liquid of nano boron nitride-modified nano titanium dioxide;

[0075] S14: First, stir and mix coal gangue in a sufficient amount of hydrochloric acid solution with a mass fraction of 5% fully, then wash with water, filter by suction, and dry;

[0076] The dried coal gangue was heat treated at 210°C for 10 min, then cooled to 60°C at a rate of 1°C / min and kept warm;

[0077] S15: The heat-insulated coal gangue and the auxiliary liquid of nano boron nitride-modified nano titanium dioxide are mixed in a weight ratio of 5:3, and the mixture is ball-milled at a speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is filtered and dried to obtain an auxiliary agent for doping and modifying the filler.

[0078] The mass fraction of the sodium lignin sulfonate solution in this embodiment is 4%; the silane coupling agent is silane coupling agent KH560;

[0079] The ultrasonic power of the blending ultrasonic treatment in this embodiment is 350W, and the ultrasonic time is 20min.

[0080] The preparation method of the stabilizer based on montmorillonite adjustment in this embodiment is:

[0081] S101: irradiating the glass fiber in a proton irradiation box for 10 minutes at an irradiation power of 350 W, and obtaining irradiated glass fiber after the irradiation is completed;

[0082] Immersing the irradiated glass fiber in a lanthanum nitrate solution of 4 times the total amount of the irradiated glass fiber and stirring sufficiently to obtain a glass fiber liquid;

[0083] S102: The glass fiber liquid and the montmorillonite stabilizer are mixed in a weight ratio of 7:5 and ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a montmorillonite-based stabilizer.

[0084] The mass fraction of the lanthanum nitrate solution in this embodiment is 3%.

[0085] The montmorillonite stabilizer of this embodiment includes the following raw materials in parts by weight:

[0086] 5 parts of montmorillonite, 1 part of cerium oxide, 2 parts of dopamine hydrochloride solution, 6 parts of sodium citrate solution and 2 parts of calcium sulfate whiskers.

[0087] The mass fraction of the dopamine hydrochloride solution in this embodiment is 2%; the mass fraction of the sodium citrate solution is 4%.

[0088] Example 2.

[0089] A highly weather-resistant road brick formed from solid waste in this embodiment includes the following raw materials in parts by weight:

[0090] 50 parts of portland cement, 22 parts of quartz stone waste, 30 parts of precipitated quartz stone slag, 10 parts of large-grained rock, 15 parts of effective assistant of doped and modified filler, 12 parts of construction waste, 11 parts of equilibrium agent based on montmorillonite adjustment, 10 parts of blast furnace slag, 10 parts of tailings iron powder and 35 parts of water;

[0091] The preparation method of the high weather resistance road brick is as follows: Weigh the raw materials according to parts by weight, add the weighed raw materials into a mixer and stir evenly and sufficiently. The stirring speed is 1500 r / min, and stir for 2 h. After stirring, put it into a mold for molding, then demold and cure for 12 d. The curing temperature is 45 °C. After curing, the high weather resistance road brick of the present invention is obtained.

[0092] The particle size of the large-grained rock is 4 mm; among them, the large-grained rock is granite;

[0093] The iron grade of the tailings iron powder > 60%, and the SiO2 content is 3 - 8 wt.%;

[0094] The construction waste also undergoes pretreatment, and the specific treatment method is as follows:

[0095] Put the construction waste into a sufficient amount of sulfuric acid solution with a mass fraction of 5% and stir well, then wash with water and dry. Send the dried construction waste into a crusher and crush it through 200 meshes.

[0096] The preparation method of the effective assistant of the doped and modified filler in this embodiment is as follows:

[0097] S11: Add nano boron nitride to a yttrium nitrate solution with a mass fraction of 5% according to a weight ratio of 2:5, and then add stearic acid accounting for 8% of the total amount of nano boron nitride, and stir well to obtain a nano boron nitride solution;

[0098] S12: Preheat nano titanium dioxide at 65 °C for 2 h, and then add 5 parts of preheated nano titanium dioxide, 3 parts of tetrabutyl titanate, and 2 parts of silane coupling agent to 8 parts of sodium lignosulfonate solution and stir well to obtain a modified nano titanium dioxide agent;

[0099] S13: Blend and ultrasonically process the modified nano titanium dioxide agent and the nano boron nitride solution according to a weight ratio of 2:5. After ultrasonic treatment, obtain an effective assistant solution of nano boron nitride modified nano titanium dioxide;

[0100] S14: First, stir and mix coal gangue evenly in a sufficient amount of hydrochloric acid solution with a mass fraction of 5%, then wash with water, filter by suction, and dry;

[0101] Then heat-treat the dried coal gangue at 220 °C for 15 min, and then cool it to 60 °C at a rate of 3 °C / min and keep it warm;

[0102] S15: Mix the heat-insulated coal gangue and the nano-boron nitride-modified nano-titanium dioxide assisting solution in a weight ratio of 5:3, perform ball milling treatment at a ball milling speed of 1500 r / min for 2 h. After the ball milling is completed, perform suction filtration and drying to obtain the assisting agent doped with the modified filler.

[0103] In this embodiment, the mass fraction of the sodium lignosulfonate solution is 6%; the silane coupling agent is silane coupling agent KH560;

[0104] In this embodiment, the ultrasonic power of the blending ultrasonic treatment is 400 W and the ultrasonic time is 30 min.

[0105] The preparation method of the equilibrium agent adjusted based on montmorillonite in this embodiment is as follows:

[0106] S101: Irradiate the glass fiber in a proton irradiation chamber for 15 min at an irradiation power of 400 W. After the irradiation is completed, obtain the irradiated glass fiber;

[0107] Immerse the irradiated glass fiber in a lanthanum nitrate solution that is 6 times the total amount of the irradiated glass fiber, and stir sufficiently to obtain a glass fiber solution;

[0108] S102: Mix the glass fiber solution and the montmorillonite equilibrium agent in a weight ratio of 7:5, perform ball milling treatment at a ball milling speed of 1500 r / min for 2 h. After the ball milling is completed, perform suction filtration and drying to obtain the equilibrium agent adjusted based on montmorillonite.

[0109] In this embodiment, the mass fraction of the lanthanum nitrate solution is 5%.

[0110] The montmorillonite equilibrium agent in this embodiment includes the following raw materials in parts by weight:

[0111] 8 parts of montmorillonite, 2 parts of cerium oxide, 5 parts of hydrochloric acid dopamine solution, 10 parts of sodium citrate solution, and 4 parts of calcium sulfate whiskers.

[0112] In this embodiment, the mass fraction of the hydrochloric acid dopamine solution is 5%; the mass fraction of the sodium citrate solution is 6%.

[0113] Example 3.

[0114] A highly weather-resistant road brick formed by using solid waste in this embodiment includes the following raw materials in parts by weight:

[0115] 47.5 parts of portland cement, 20 parts of quartz stone corner waste, 25 parts of quartz stone precipitation slag, 7.5 parts of large particle rock, 12.5 parts of the assisting agent doped with the modified filler, 10 parts of construction waste, 9 parts of the equilibrium agent adjusted based on montmorillonite, 8 parts of blast furnace slag, 8 parts of tailings iron powder, and 32.5 parts of water;

[0116] The preparation method of the highly weather-resistant road bricks is as follows: Weigh the raw materials according to parts by weight, add the weighed raw materials into a mixer and stir evenly for 2 hours at a stirring speed of 1250 r / min. After the stirring is completed, form them in a mold, and then demold and cure for 12 days at a curing temperature of 42.5 °C. After the curing is completed, the highly weather-resistant road bricks of the present invention are obtained.

[0117] In this embodiment, the particle size of the large-particle rock is 3 mm; the large-particle rock is one of granite, basalt, and sandstone;

[0118] The iron grade of the tailings iron powder is > 60%, and the SiO2 content is 4 wt.%;

[0119] The construction waste also undergoes pretreatment. The specific treatment method is as follows:

[0120] Place the construction waste in a sufficient amount of 5% sulfuric acid solution and stir well, then wash with water and dry. Send the dried construction waste into a crusher and crush it through 200 meshes.

[0121] The preparation method of the effect auxiliary agent of the doped and modified filler in this embodiment is as follows:

[0122] S11: Add nano boron nitride to a 5% yttrium nitrate solution according to a weight ratio of 2:5, and then add stearic acid accounting for 6.5% of the total amount of nano boron nitride, and stir well to obtain a nano boron nitride solution;

[0123] S12: Preheat nano titanium dioxide at 62.5 °C for 1.5 hours, and then add 4 parts of preheated nano titanium dioxide, 2 parts of tetrabutyl titanate, and 1.5 parts of silane coupling agent to 6.5 parts of sodium lignosulfonate solution and stir well to obtain a modified nano titanium dioxide agent;

[0124] S13: Blend and ultrasonically process the modified nano titanium dioxide agent and the nano boron nitride solution according to a weight ratio of 2:5. After the ultrasonic treatment is completed, obtain a nano boron nitride-modified nano titanium dioxide effect auxiliary solution;

[0125] S14: First, stir and mix coal gangue in a sufficient amount of 5% hydrochloric acid solution, then wash with water, filter by suction, and dry;

[0126] Heat-treat the dried coal gangue at 215 °C for 12.5 minutes, and then cool it to 60 °C at a rate of 2 °C / min and keep it warm;

[0127] S15: Mix and ball-mill the heat-preserved coal gangue and the nano boron nitride-modified nano titanium dioxide effect auxiliary solution according to a weight ratio of 5:3. The ball-milling speed is 1500 r / min, and the ball-milling time is 2 hours. After the ball-milling is completed, filter by suction and dry to obtain the effect auxiliary agent of the doped and modified filler.

[0128] The mass fraction of the sodium lignin sulfonate solution in this embodiment is 5%; the silane coupling agent is silane coupling agent KH560;

[0129] The ultrasonic power of the blending ultrasonic treatment in this embodiment is 370W, and the ultrasonic time is 25min.

[0130] The preparation method of the stabilizer based on montmorillonite adjustment in this embodiment is:

[0131] S101: irradiating the glass fiber in a proton irradiation box for 12.5 minutes at an irradiation power of 370 W, and obtaining irradiated glass fiber after the irradiation is completed;

[0132] The irradiated glass fiber is immersed in a lanthanum nitrate solution of 5 times the total amount of the irradiated glass fiber and stirred sufficiently to obtain a glass fiber liquid;

[0133] S102: Mix the glass fiber liquid and the montmorillonite stabilizer in a weight ratio of 7:5, and perform ball milling at a ball milling speed of 1250 r / min for 2 hours. After the ball milling is completed, filter and dry to obtain a montmorillonite-based stabilizer.

[0134] The mass fraction of the lanthanum nitrate solution in this embodiment is 4%.

[0135] The montmorillonite stabilizer of this embodiment includes the following raw materials in parts by weight:

[0136] 6.5 parts of montmorillonite, 1.5 parts of cerium oxide, 3.5 parts of dopamine hydrochloride solution, 8 parts of sodium citrate solution and 3 parts of calcium sulfate whiskers.

[0137] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3.5%; the mass fraction of the sodium citrate solution is 5%.

[0138] Comparative Example 1.

[0139] The difference from Example 3 is that no auxiliary agent for doping and modifying the filler is added.

[0140] Comparative Example 2.

[0141] The difference from Example 3 is that no heat-insulating coal gangue is added in the preparation of the auxiliary agent for doping the modified filler.

[0142] Comparative Example 3.

[0143] The difference from Example 3 is that the auxiliary liquid of nano-boron nitride-modified nano-titanium dioxide is not added in the preparation of the auxiliary agent for doping and modifying the filler.

[0144] Comparative Example 4.

[0145] The difference from Example 3 is that no nano-boron nitride liquid is added in the preparation of the auxiliary liquid for nano-boron nitride conditioning nano-titanium dioxide.

[0146] Comparative Example 5

[0147] Different from Example 3, in the preparation of the assisting liquid for conditioning nano-titanium dioxide with nano-boron nitride, the modified nano-titanium dioxide agent was not added.

[0148] Comparative Example 6

[0149] Different from Example 3, in the preparation of the modified nano-titanium dioxide agent, preheated nano-titanium dioxide and tetrabutyl titanate were not added.

[0150] Comparative Example 7

[0151] Different from Example 3, the stabilizing agent adjusted based on montmorillonite was not added.

[0152] Comparative Example 8

[0153] Different from Example 3, in the preparation of the stabilizing agent adjusted based on montmorillonite, glass fiber liquid was not added.

[0154] Comparative Example 9

[0155] Different from Example 3, in the preparation of the stabilizing agent adjusted based on montmorillonite, the montmorillonite stabilizing agent was not added.

[0156] The products of Examples 1 - 3 and Comparative Examples 1 - 9 were tested for the strength, abrasion resistance, and thermal conductivity of paving bricks. Also, the products were soaked in water for 24 h, then placed at -5°C for 24 h, and then placed at 70°C for 24 h. The above was taken as one cycle, and the cycle test was carried out 10 times to test the water resistance, freeze - heat stability of the products;

[0157] And the products were soaked in water for 24 h, and then subjected to radiation aging treatment in a xenon arc lamp aging chamber with a cumulative radiation dose of 1500 MJ / m 2 , to test the water resistance and aging stability of the products; The test results of the freeze - heat resistance, weather resistance, and water stability of the products are as follows;

[0158]

[0159]

[0160] It can be seen from Comparative Examples 1 - 9 and Examples 1 - 3 that;

[0161] The products of Example 3 have excellent flexural strength, wear amount, and thermal conductivity. The three properties can be coordinately improved. At the same time, the products have excellent performance stability under freeze - heat resistance, weather resistance, and water conditions;

[0162] When one of the effectiveness aids doped with modified fillers and the stabilizer adjusted based on montmorillonite is not added to the product, the performance of the product deteriorates significantly. When the two are used in coordination, the performance effect of the product is the most significant;

[0163] During the preparation of the effectiveness aid doped with modified fillers, heat-insulated coal gangue is not added. During the preparation of the effectiveness aid doped with modified fillers, the effectiveness aid solution for adjusting nano-titanium dioxide with nano-boron nitride is not added. During the preparation of the effectiveness aid solution for adjusting nano-titanium dioxide with nano-boron nitride, nano-boron nitride solution is not added. During the preparation of the effectiveness aid solution for adjusting nano-titanium dioxide with nano-boron nitride, modified nano-titanium dioxide agent is not added. During the preparation of the modified nano-titanium dioxide agent, preheated nano-titanium dioxide and tetrabutyl titanate are not added. The performance of the product shows a deteriorating trend. The modified nano-titanium dioxide agent obtained by the specific method of the present invention, the effectiveness aid solution for adjusting nano-titanium dioxide with nano-boron nitride obtained by combining with nano-boron nitride solution, and the effectiveness aid doped with modified fillers obtained by specific heat-insulated coal gangue have the most significant performance effect. Using other methods to replace them is not as obvious as the effect of the present invention;

[0164] During the preparation of the stabilizer adjusted based on montmorillonite, glass fiber solution is not added. During the preparation of the stabilizer adjusted based on montmorillonite, montmorillonite stabilizer is not added. The performance of the product shows a relatively obvious deteriorating trend. And when the montmorillonite stabilizer is not added, the performance of the product deteriorates significantly. At the same time, the stabilizer adjusted based on montmorillonite obtained by the specific method has the most significant performance effect.

[0165] The present invention further explores the product performance through the composition of the montmorillonite stabilizer;

[0166] The montmorillonite stabilizer includes the following raw materials in parts by weight:

[0167] 6.5 parts of montmorillonite, 1.5 parts of cerium oxide, 3.5 parts of hydrochloric acid dopamine solution, 8 parts of sodium citrate solution, and 3 parts of calcium sulfate whiskers.

[0168] The mass fraction of the hydrochloric acid dopamine solution in this example is 3.5%; the mass fraction of the sodium citrate solution is 5%.

[0169] Experimental Example 1.

[0170] The only difference from Example 3 is that montmorillonite is not added to the montmorillonite stabilizer.

[0171] Experimental Example 2.

[0172] The only difference from Example 3 is that cerium oxide is not added to the montmorillonite stabilizer.

[0173] Experimental Example 3.

[0174] The only difference from Example 3 is that calcium sulfate whiskers are not added to the montmorillonite stabilizer.

[0175] Experimental Example 4

[0176] The only difference from Example 3 is that no dopamine hydrochloride solution is added to the montmorillonite stabilizer, and the sodium citrate solution is replaced with water.

[0177] Experimental Example 5

[0178] The only difference from Example 3 is that the mass fraction of the dopamine hydrochloride solution is 6%; the mass fraction of the sodium citrate solution is 7%.

[0179]

[0180]

[0181] It can be seen from Experimental Examples 1 - 5 that when montmorillonite is not added to the montmorillonite stabilizer, the performance of the product deteriorates significantly, and when calcium sulfate whiskers are not added to the montmorillonite stabilizer, the performance of the product also shows an obvious deterioration trend. When cerium oxide is not added to the montmorillonite stabilizer, when the dopamine hydrochloride solution is not added to the montmorillonite stabilizer and the sodium citrate solution is replaced with water, when the mass fraction of the dopamine hydrochloride solution is 6%; the mass fraction of the sodium citrate solution is 7%, the performance of the product all shows a deterioration trend to varying degrees. In addition, the raw material mass fractions of the dopamine hydrochloride solution and the sodium citrate solution of the present invention are unique. When other raw materials are used for substitution, the performance effects of the products are not as significant as those of the present invention. Only when the montmorillonite stabilizer obtained with the specific raw material ratio of the present invention is used, the performance effect of the product is the most significant.

[0182] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

[0183] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A highly weather-resistant road brick formed from solid waste, characterized in that: It includes the following raw materials in parts by weight: 45-50 parts of silicate cement, 18-22 parts of quartzite scraps, 20-30 parts of quartzite precipitated slag, 5-10 parts of large-grained rock, 10-15 parts of additives doped with modified fillers, 8-12 parts of construction waste, 7-11 parts of stabilizers based on montmorillonite adjustment, 6-10 parts of blast furnace slag, 6-10 parts of tailings iron powder and 30-35 parts of water; The particle size of the large-grained rock is 2-4 mm, wherein the large-grained rock is one of granite, basalt, and sandstone; the quartzite precipitated slag is the slag precipitated during the quartzite processing, and the particle size is 2 mm; the particle size of the quartzite scraps is 3 mm; The preparation method of the auxiliary agent for doping and modifying fillers is as follows: S11: adding nano boron nitride to a 5% by mass yttrium nitrate solution at a weight ratio of 2:5, and then adding stearic acid at a weight ratio of 5-8% of the total amount of nano boron nitride, and stirring to obtain a nano boron nitride liquid; S12: preheating nano titanium dioxide at 60-65° C. for 1-2 hours, then adding 3-5 parts of the preheated nano titanium dioxide, 1-3 parts of tetrabutyl titanate, and 1-2 parts of a silane coupling agent to 5-8 parts of a sodium lignin sulfonate solution and stirring to obtain a modified nano titanium dioxide agent; S13: mixing the modified nano titanium dioxide agent and the nano boron nitride liquid in a weight ratio of 2:5 and subjecting them to ultrasonic treatment, and then completing the ultrasonic treatment to obtain an auxiliary liquid of nano boron nitride-modified nano titanium dioxide; S14: Stir and mix the coal gangue thoroughly in a sufficient amount of 5% by mass hydrochloric acid solution, then wash, filter and dry; The dried coal gangue is then heat treated at 210-220°C for 10-15 min, then cooled to 60°C at a rate of 1-3°C / min, and kept warm; S15: mixing the heat-insulated coal gangue and the auxiliary liquid of nano boron nitride-modified nano titanium dioxide in a weight ratio of 5:3, and ball milling the mixture at a speed of 1500 r / min for 2 h. After the ball milling is completed, the mixture is filtered and dried to obtain an auxiliary agent for doping and modifying the filler; The preparation method of the montmorillonite-based stabilizer is as follows: S101: irradiating the glass fiber in a proton irradiation box for 10-15 minutes at an irradiation power of 350-400W, and obtaining irradiated glass fiber after the irradiation is completed; The irradiated glass fiber is immersed in a lanthanum nitrate solution of 4 to 6 times the total amount of the irradiated glass fiber and stirred sufficiently to obtain a glass fiber liquid; S102: mixing the glass fiber liquid and the montmorillonite stabilizer in a weight ratio of 7:5, and ball milling the mixture at a speed of 1000-1500 r / min for 2 h. After the ball milling is completed, the mixture is filtered and dried to obtain a montmorillonite-based stabilizer. The montmorillonite stabilizer comprises the following raw materials in parts by weight: 5-8 parts of montmorillonite, 1-2 parts of cerium oxide, 2-5 parts of dopamine hydrochloride solution, 6-10 parts of sodium citrate solution and 2-4 parts of calcium sulfate whiskers; The preparation method of high-weather-resistant road bricks is as follows: weigh raw materials according to weight, add the weighed raw materials into a mixer and stir and mix them thoroughly, the stirring speed is 1000-1500r / min, stirring for 2h, after the stirring is finished, forming in a mold, and then demolding and curing for 12d, the curing temperature is 40-45℃, after the curing is finished, the high-weather-resistant road bricks are obtained.

2. The high weather-resistant road brick formed by using solid waste according to claim 1, characterized in that: The highly weather-resistant road brick comprises the following raw materials in parts by weight: 47.5 parts of silicate cement, 20 parts of quartz stone scraps, 25 parts of quartz stone precipitated slag, 7.5 parts of large-particle rocks, 12.5 parts of additives doped with modified fillers, 10 parts of construction waste, 9 parts of stabilizers based on montmorillonite adjustment, 8 parts of blast furnace slag, 8 parts of tailings iron powder and 32.5 parts of water.

3. The high weather-resistant road brick formed by using solid waste according to claim 1, characterized in that: The iron grade of tailings iron powder is >60%, and the SiO2 content is 3~8wt.%; Construction waste is also pre-processed. The specific treatment methods are as follows: Place the construction waste in a sufficient amount of 5% by mass sulfuric acid solution and stir it thoroughly, then wash and dry it, and send the dried construction waste into a crusher and crush it through 200 meshes.

4. The high weather-resistant road brick formed by using solid waste according to claim 1, characterized in that: The mass fraction of the sodium lignin sulfonate solution is 4-6%; the silane coupling agent is silane coupling agent KH560.

5. The high weather-resistant road brick formed by using solid waste according to claim 1, characterized in that: The ultrasonic power of the blending ultrasonic treatment is 350-400W, and the ultrasonic time is 20-30min.

6. The high weather-resistant road brick formed by using solid waste according to claim 1, characterized in that: The mass fraction of the lanthanum nitrate solution is 3-5%.

7. The high weather-resistant road brick formed from solid waste according to claim 1, characterized in that: The mass fraction of the dopamine hydrochloride solution is 2-5%; the mass fraction of the sodium citrate solution is 4-6%.

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