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A conductive asphalt and concrete technology, applied in the field of road engineering materials, can solve the problem of difficult to ensure the electrical conductivity and road performance of asphalt concrete at the same time, and achieve the effects of preventing or pavement cracks, prolonging durability, and improving low-temperature crack resistance.
Inactive Publication Date: 2017-12-01
CHANGAN UNIV
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Problems solved by technology
The existing conductive asphalt concrete is difficult to ensure the electrical conductivity and road performance of asphalt concrete at the same time
Method used
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Embodiment 1
[0026] This embodiment provides a conductive asphalt concrete, the aggregate gradation type used is AC-13 type, the asphalt used is SBS modified asphalt, including the following raw materials in parts by mass:
[0027] 98 parts of aggregate, 2 parts of mineral powder filler, 8 parts of asphalt, 11 parts of conductive material, 2 parts of 3,4-dihydroxycinnamic acid conductivity improver, trimethoxy-2-azidobenzenesulfonylethylsilane coupling 0.01 part of agent, 0.5 part of bis(octylphenol polyoxyethylene ether) phosphoester dispersant; the conductive material used is a mixture of nano-silver solution, silver-plated conductive yarn, and black titanium powder.
[0028] Prepare according to the following preparation method:
[0029] Step 1. Add black titanium powder into nano-silver solution with a mass concentration of 20% to 40%, stir evenly, soak the silver-plated conductive yarn for 40-60 minutes, heat it to a colloidal suspension, and then cool it naturally to obtain a conduct...
Embodiment 2
[0033] This embodiment provides a conductive asphalt concrete, the raw material ratio is as follows:
[0034] 91 parts of aggregate, 9 parts of mineral powder filler, 3 parts of asphalt, 0.7 part of conductive material, 0.01 part of asphalt conductivity improver, 2 parts of coupling agent, and 0.01 part of dispersant.
[0035] The preparation method of this embodiment is the same as that of Example 1.
Embodiment 3
[0037] This embodiment provides a conductive asphalt concrete, the raw material ratio is as follows:
[0038] 94.7 parts of aggregate, 5.3 parts of mineral powder filler, 4.9 parts of asphalt, 8 parts of conductive material, 1.1 parts of asphalt conductive improver, 0.9 part of coupling agent, and 0.18 part of dispersant.
[0039] The preparation method of this embodiment is the same as that of Example 1.
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Abstract
The invention provides conductive asphalt concrete. The conductive asphalt concrete is prepared from raw materials in parts by mass as follows: 91-98 parts of aggregate, 2-9 parts of mineral powder filler, 3-8 parts of asphalt, 0.7-11 parts of a conductive material, 0.01-2 parts of 3,4-dihydroxy-cinnamic acid, 0.01-2 parts of a coupling agent and 0.01-0.5 parts of a dispersing agent, wherein the conductive material is formed by mixing a nano-silver solution and silver-plated conductive yarn; the coupling agent is trimethoxy-2-azidobenzenesulfonyl ethylsilane; the dispersing agent is di(octylphenol polyoxyethylene ether) phosphate. According to the conductive asphalt concrete, the conductive material formed by the nano-silver solution, the silver-plated conductive yarn and black titanium powder is used for the first time, the conductivity is improved, and the conductivity of the conductive material is further improved greatly under the synergistic effect of a 3,4-dihydroxy-cinnamic acid conductivity improving agent. After the material is added, an asphalt mixture is transformed into a conductor from an insulator, electric energy is transformed into heat energy under a power-on condition, so that the temperature of an asphalt concrete pavement is increased, and the purposes of deicing and snow melting are achieved.
Description
technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to conductive asphalt concrete. Background technique [0002] Asphalt is a complex organic mixture, and its resistivity is generally 1011-1013Ω·m, while that of asphalt concrete is about 107-109Ω·m, both of which are insulator materials. The conductivity of asphalt concrete can be improved by adding conductive materials to asphalt concrete. The existing conductive asphalt concrete is difficult to ensure the electrical conductivity and road performance of the asphalt concrete at the same time. [0003] Therefore, a new type of asphalt conductive material is developed to further improve the conductivity of asphalt concrete and have good road performance, which can better meet its application in snow melting and ice melting of asphalt pavement in winter, pavement damage detection, intelligent management of road traffic, etc. , making the study of conduc...
Claims
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