Pavement temperature regeneration mixed material and method for recovering use performance of pavement
A technology of mixed materials and mixed materials, which is applied in road repair, roads, roads, etc., can solve the problems of high process temperature and insufficient interlayer bonding force, and achieve the goals of improving interlayer bonding force, delaying aging speed, and reducing mixing temperature Effect
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Embodiment 1
[0033] Preparation of pavement warm recycled mixed materials:
[0034] According to the material mass ratio shown in Table 1, the polysiloxane, methylparaben and cyclooctatetraene are uniformly mixed to obtain the pavement temperature regeneration mixed material.
[0035] Table 1 Ratio of pavement warm recycled mixed materials
[0036] sample 1 sample 2 sample 3 Sample 4 Sample 5 Sample 6 Sample 7 polysiloxane 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Methylparaben 0 0.2 0.25 0.3 0.35 0.4 0.5 cyclooctatetraene 0.5 0.3 0.25 0.2 0.15 0.1 0
[0037] Performance Testing:
[0038] Carry out the aging test of the base asphalt in a rotating film oven, mix the above-mentioned pavement temperature recycled mixed material samples with the aged asphalt according to the dosage of 10%, 12%, and 14% (mass percentage), and test the asphalt ductility, penetration and software points , the test indicators are shown in Table 2.
[0039] Table...
Embodiment 2
[0043] as attached figure 1 Shown, the method that present embodiment recovers road performance is:
[0044] S1. Use an asphalt pavement milling machine to carry out thermal milling on the asphalt upper layer. The heated pavement milling should be in place without interlayers, and the receiving and scraping materials should be clean to improve the flatness. The milling thickness should be 4cm (old pavement layer thickness above the structure).
[0045] S2. Collect the milling material of the asphalt upper layer obtained in step S1 into a transport vehicle.
[0046] S3. Carry out in-situ thermal regeneration construction and compaction on the asphalt mid-surface layer to obtain the regenerated mid-surface layer:
[0047] ①Heating operation
[0048] The thermal regeneration heating equipment uses thermal radiation technology, which does not cause too much damage to the asphalt pavement; after the heating wall is lit, the construction worker checks that it is in good condition...
Embodiment 3
[0063] In the method for restoring road performance, steps S1-S5 are the same as those in Embodiment 2.
[0064] S6. Spread the remixed mixture obtained in step S5 on the regeneration middle surface layer, and then compact it with a slick roller to obtain a regeneration upper layer with a thickness of 4 cm, and the compaction rate is ≥ 96%;
[0065] S7. In the state where the residual temperature of the regenerated upper layer is not lower than 100°C, cover a layer of overlay material on the regenerated upper layer, and use a vibratory roller to roll and form it once to obtain a regenerated upper layer with an overcoat layer, and the overlay layer The thickness is 1.5cm, and the SMA-5 graded thin-layer overlay material is used, and the compaction rate is ≥98%.
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