Dense-graded asphalt concrete with continuous skid-resistant and noise-reduction functions
An asphalt concrete and dense grading technology, applied in the field of dense grading asphalt concrete, can solve problems such as the attenuation of anti-skid and noise reduction performance, and achieve the effects of good bearing capacity and durability, good noise reduction effect, and good bearing capacity.
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[0049] Example 1
[0050] (1) Screening of mineral materials: According to "Technical Specification for Highway Asphalt Pavement Construction (JTG F40-2004)", various mineral materials are screened. The asphalt is SBS I-D modified asphalt, the coarse aggregates are all functional aggregates prepared in Example 11, the fine aggregates are machine-made sand and stone chips, and the filler is mineral powder.
[0051] (2) Determination of mineral density: According to "Technical Specification for Highway Asphalt Pavement Construction (JTG F40-2004)", the apparent relative density and bulk relative density of various mineral materials are measured.
[0052] (3) According to the "Technical Specification for Highway Asphalt Pavement Construction (JTG F40-2004)", carry out the grading design of mineral materials, and use the resulting gradation ratio as the volume mixing ratio of various mineral materials. The volume mix ratio of mineral materials (P vi ) Is converted to mass mix ratio (P...
Example Embodiment
[0060] Example 2
[0061] Using the functional aggregate prepared in Example 12, the mineral aggregate was graded according to dense-graded asphalt concrete AC-10, and the rest was the same as in Example 1. The volume grading ratio of mineral aggregate and the optimal oil-stone ratio are shown in Table 6.
[0062] The freeze-thaw splitting strength ratio, immersion residual stability and durability test (including the comparison of anti-skid performance and noise reduction performance before and after use) are listed in Table 7.
Example Embodiment
[0063] Example 3
[0064] The functional aggregate prepared in Example 13 was used to perform mineral aggregate grading according to dense-graded asphalt concrete AC-16. The rest was the same as in Example 1. The volume grading ratio of mineral aggregates and the optimal oil-stone ratio are shown in Table 6.
[0065] The freeze-thaw splitting strength ratio, immersion residual stability and durability test (including the comparison of anti-skid performance and noise reduction performance before and after use) are listed in Table 7.
[0066] Table 6 AC-10, AC-13, AC-16 dense-graded asphalt concrete volume ratio
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[0068]
[0069] * The OGFC-13 asphalt mixture of Comparative Example 1 uses high-viscosity modified asphalt, and the AC-13 asphalt concrete of Comparative Example 2 uses SBS modified asphalt. ** The data in parentheses are the nominal particle size range of coarse aggregates.
[0070] Table 7 Comparison of performance of different graded asphalt concrete
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