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CN-116693232-B - Asphalt concrete integrating ice breaking and noise reduction and manufacturing method thereof

CN116693232BCN 116693232 BCN116693232 BCN 116693232BCN-116693232-B

Abstract

The invention discloses asphalt concrete integrating ice breaking and noise reduction and a preparation method thereof, which comprise the following raw materials, by weight, 100-120 parts of aggregate, 5-8 parts of heat-conducting asphalt, 2-8 parts of mineral powder and 3-5 parts of noise-reducing filler, wherein the aggregate, the noise-reducing filler and the mineral powder are stirred for 20 seconds, then the heat-conducting asphalt is added, and the mixture is molded to prepare the asphalt concrete integrating ice breaking and noise reduction, wherein modified silicon carbide is introduced into the heat-conducting asphalt, carbon nanotubes are used as carbon sources, silicon powder and silicon dioxide are used as silicon sources, cobalt acetate is used as a cobalt source, and the modified silicon carbide is prepared by a solid-phase sintering method, wherein cobalt atoms enter the inside of a silicon carbide lattice to prepare cobalt doped silicon carbide, and the cobalt element is introduced while the silicon carbide has excellent heat conducting property, so that the magnetism of the modified silicon carbide is endowed, the wave absorbing property of the silicon carbide is improved, the ice breaking can be quickly melted under the microwave effect, the heat conducting coefficient of the asphalt is improved, and the ice breaking property is further improved.

Inventors

  • LI HANG
  • CUI WEI
  • ZHANG YUNGUANG
  • SUN FUXING

Assignees

  • 黑龙江省中冉建材有限公司

Dates

Publication Date
20260505
Application Date
20230205

Claims (5)

  1. 1. The asphalt concrete integrating ice breaking and noise reduction is characterized by comprising the following raw materials, by weight, 100-120 parts of aggregate, 5-8 parts of heat-conducting asphalt, 2-8 parts of mineral powder and 3-5 parts of noise reduction filler; the asphalt concrete integrating ice breaking and noise reduction is prepared by the following steps: Stirring aggregate, noise-reducing filler and mineral powder at 165-180 ℃ for 20s, then adding heat-conducting asphalt, mixing for 90-150s, and then forming to obtain asphalt concrete integrating ice breaking and noise reduction; The heat conduction asphalt is prepared by the following steps: Step S1, uniformly mixing a carbon nano tube, silicon powder and silicon dioxide powder, adding cobalt acetate, uniformly grinding, transferring to a tube furnace, heating to 1500 ℃, introducing argon, reacting for 2 hours, cooling to the temperature of 700 ℃ and then to Wen Chutan ℃, cooling to room temperature, treating with 45% hydrofluoric acid by mass fraction for 6 hours, washing with deionized water until a washing solution is neutral, and drying to obtain modified silicon carbide; Step S2, heating 80-100 parts of asphalt to be molten according to parts by weight, sequentially adding 10-15 parts of modified silicon carbide, 1-2 parts of sulfur powder and 5 parts of sodium dodecyl benzene sulfonate at a rotating speed of 200-300r/min to prepare a mixture, shearing and stirring the mixture at 150-180 ℃ for 5min, and naturally cooling to room temperature to prepare the heat-conducting asphalt; The noise reduction filler is prepared by the following steps: S11, adding vermiculite into a porcelain evaporation dish heated in a microwave oven, heating for 30S under the power of 240W, taking out the vermiculite from the porcelain evaporation dish, and cooling to obtain expanded vermiculite; and S12, dispersing the carbon nano tube in molten polyethylene glycol, uniformly stirring for 2 hours at 75 ℃, adding expanded vermiculite, preserving heat for 4 hours, transferring to filter paper, removing the permeated polyethylene glycol on the surface of the expanded vermiculite at 70 ℃, continuously replacing the filter paper until no permeation trace exists, and preparing the noise reduction filler, wherein the weight ratio of the carbon nano tube to the polyethylene glycol to the expanded vermiculite is controlled to be 0.75-0.95:9.10-9.15:17.25.
  2. 2. An ice breaking and noise reducing bituminous concrete according to claim 1 wherein the aggregate is limestone or granite or basalt or diabase with a particle size of 0.075-16 mm.
  3. 3. The asphalt concrete integrating ice breaking and noise reduction according to claim 1, wherein in the step S1, the weight ratio of the carbon nano tube to the silicon powder to the silicon dioxide powder is controlled to be 1:0.3-0.5:0.5-0.8, and the amount of the cobalt acetate is 10-12% of the sum of the weight of the carbon nano tube, the silicon powder and the silicon dioxide powder.
  4. 4. An integrated icebreaking and noise reduction asphalt concrete according to claim 1, wherein the shear rate in step S2 is 3000-5000r/min.
  5. 5. The method for manufacturing asphalt concrete integrating ice breaking and noise reduction according to claim 1, comprising the following steps: And (3) stirring the aggregate, the noise-reducing filler and the mineral powder for 20s at 165-180 ℃, then adding the heat-conducting asphalt, mixing for 90-150s, and then forming to obtain the asphalt concrete integrating ice breaking and noise reduction.

Description

Asphalt concrete integrating ice breaking and noise reduction and manufacturing method thereof Technical Field The invention belongs to the technical field of concrete, and particularly relates to asphalt concrete integrating ice breaking and noise reduction and a manufacturing method thereof. Background The quality of road surface conditions is an important factor affecting road traffic. Most of northern areas and southern mountain areas of China belong to winter snow areas, and snow periods of some areas reach 3-4 months. The snow can bring benefits to people and also bring disasters to people. The region with more snow and snow affects the smoothness and safety of transportation. In ice and snow weather, the road adhesion capability is greatly reduced, and the dynamic property and the safety of the running of the vehicle are extremely unfavorable. According to statistics, about 15% of traffic accidents are related to road snow, and the road transportation efficiency is extremely low in ice and snow weather, so that the traffic facilities and vehicles are seriously damaged, even the road is closed, inconvenience is brought to passenger and goods transportation, huge economic loss is caused to nearby cities, and meanwhile, the traffic accidents seriously threaten the life safety of drivers and passengers. At present, the technology for melting snow at home and abroad mainly comprises two main types, namely the technology for melting snow on the outside of a pavement and the technology for melting snow on the inside of the pavement. The road surface external snow melting technology comprises a snow melting agent method, a mechanical snow removing method and a manual snow removing method, and the road surface internal snow melting technology comprises a chloride adding technology, a freezing inhibition paving technology and a thermal snow melting technology. Although the manual snow removing and the mechanical snow removing can remove the snow layer covered on the surface of the road surface, from microscopic observation, the uneven part of the road surface is still full of ice and snow, so that the road surface forms an ice and snow layer, the adhesive force between an automobile and the road surface is still very low, the vehicle operability and the braking effect are still poor, and the driving safety cannot be effectively ensured. The main component of the snow-melting agent is chloride, and snow is melted by reducing the melting point of ice and snow, so that the snow-melting agent is generally suitable for areas with smaller snow thickness and higher environmental temperature on road surfaces, however, the chloride can have great influence on the surrounding environment. The research of the technology for inhibiting the freezing pavement is still in the starting stage, and the effect of actually inhibiting the freezing is not obvious. Disclosure of Invention In order to solve the technical problems in the background art, the invention aims to provide asphalt concrete integrating ice breaking and noise reduction and a manufacturing method thereof. The aim of the invention can be achieved by the following technical scheme: The asphalt concrete integrating ice breaking and noise reduction comprises the following raw materials, by weight, 100-120 parts of aggregate, 5-8 parts of heat-conducting asphalt, 2-8 parts of mineral powder and 3-5 parts of noise reduction filler; the asphalt concrete integrating ice breaking and noise reduction is prepared by the following steps: And (3) stirring the aggregate, the noise-reducing filler and the mineral powder for 20s at 165-180 ℃, then adding the heat-conducting asphalt, mixing for 90-150s, and then forming to obtain the asphalt concrete integrating ice breaking and noise reduction. Further, the aggregate is limestone or granite or basalt or diabase with the particle size of 0.075-16 mm. Further, the heat conducting asphalt is prepared through the following steps: Step S1, uniformly mixing a carbon nano tube, silicon powder and silicon dioxide powder, adding cobalt acetate, uniformly grinding, transferring to a tube furnace, heating to 1500 ℃, introducing argon, reacting for 2 hours, cooling to the temperature of 700 ℃ and then to Wen Chutan ℃, cooling to room temperature, treating with 45% hydrofluoric acid by mass fraction for 6 hours, washing with deionized water until a washing solution is neutral, and drying to obtain modified silicon carbide; In the step S1, carbon nanotubes are used as a carbon source, silicon powder and silicon dioxide are used as a silicon source, cobalt acetate is used as a cobalt source, modified silicon carbide is prepared through a solid phase sintering method, cobalt atoms enter the silicon carbide crystal lattice to prepare cobalt doped silicon carbide, and cobalt element is introduced while the silicon carbide has excellent heat conducting property, so that the modified silicon carbide is endowed with magnetism, and the wave absorbi