A kind of porous slag asphalt mixture and its mixing ratio design method
A technology of asphalt mixture and slag, which is applied in roads, road repairs, construction, etc., can solve the problems of insufficient support for the development of porous slag asphalt mixture technology, large demand for high-quality aggregates, and low utilization rate of resources. Improve the resource utilization rate and utilization level, alleviate the contradiction between supply and demand, and reduce the effect of environmental damage
Active Publication Date: 2021-12-21
NANJING FORESTRY UNIV
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Problems solved by technology
[0004] In order to solve the low resource utilization rate of slag aggregate in traditional asphalt mixture, vigorously develop porous asphalt mixture and there is a large demand for high-quality aggregate, and the existing research results are not enough to support the development of porous slag asphalt mixture technology problem, the present invention provides a kind of aggregate that can make full use of slag, provide high-quality and cheap aggregate for porous asphalt mixture, alleviate the contradiction between aggregate supply and demand, reduce environmental damage, and can effectively improve the resource utilization rate and utilization of slag. Horizontal Porous Slag Asphalt Mixture and Its Mixing Ratio Design Method
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[0040] First, according to the standard method stipulated in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011), the basalt coarse aggregate, limestone fine aggregate, limestone mineral powder, polypropylene fiber and high-viscosity modified asphalt performance test. The test results and technical requirements of each raw material are shown in Table 1 to Table 5.
[0041] Measurement results and technical requirements of basalt coarse aggregate performance index in the embodiment of table 1
[0042]
[0043] Limestone fine aggregate performance index measurement results and technical requirements in the embodiment of table 2
[0044]
[0045] Limestone slag performance index measurement result and technical requirement in the embodiment of table 3
[0046]
[0047] Polypropylene fiber performance index measurement result and technical requirement in the embodiment of table 4
[0048]
[0049] Table 5. Measurement result...
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Abstract
A porous slag asphalt mixture and its mixing ratio design method, which solves the problem of low resource utilization rate of existing slag aggregates in traditional asphalt mixtures, and the large demand for high-quality aggregates in the development of porous asphalt mixtures. The research results are not enough to support the development of porous slag asphalt mixture technology. The design method of the porous slag asphalt mixture and its mixing ratio is based on the characteristics of the porous asphalt mixture with high requirements on environmental function and low strength requirements, and the slag aggregates with different particle sizes are used in the porous asphalt mixture to make full use of it. The porous structure characteristics of slag aggregates and the general basic properties of strength have been solved, effectively solving the problems of low utilization rate of slag in traditional asphalt mixture and great influence on the performance of the mixture; moreover, it can provide high quality and low price for porous asphalt mixture Inexpensive aggregates alleviate the contradiction between aggregate supply and demand, reduce environmental damage, and effectively improve the resource utilization rate and utilization level of slag.
Description
technical field [0001] The invention belongs to the technical field of road engineering, and specifically relates to a method that can make full use of slag aggregates, provide high-quality and cheap aggregates for porous asphalt mixtures, alleviate the contradiction between supply and demand of aggregates, reduce environmental damage, and effectively improve the resource utilization of slag. Utilization rate and utilization level of porous slag asphalt mixture and its mix ratio design method. Background technique [0002] The slag aggregate is a kind of artificial aggregate that can be used in the field of road engineering, which is made of domestic waste incineration slag (hereinafter referred to as slag) after pretreatment and processed. Although the main chemical composition and main mineral composition of slag aggregates are similar to natural mineral aggregates, due to its microscopically typical sponge-like porous structure, compared with natural mineral aggregates, i...
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IPC IPC(8): E01C19/05E01C19/10C04B26/26
CPCE01C19/05E01C19/10E01C19/1068C04B26/26C04B2111/0075C04B14/14C04B14/28C04B16/0633
Inventor 赵曜呼禹王大明
Owner NANJING FORESTRY UNIV