Purification type recycled asphalt concrete and preparation process thereof
A technology of recycling asphalt and concrete, which is applied in the field of asphalt concrete processing, can solve the problems of flying dust and poor dust absorption of asphalt concrete, and achieve the effects of protecting the environment, improving dust absorption effect, and rough surface
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Embodiment 1
[0046] Example 1: A purified recycled asphalt concrete, the components and their corresponding parts by weight are shown in Table 1, and were prepared through the following steps:
[0047] Step 1: Stir and dry new aggregates, diatomite, steel slag and porous ceramics in corresponding parts by weight in a drying barrel. The temperature is controlled at 100°C, the time is 40min, and the stirring speed is 900rpm to obtain a dry mixed material;
[0048] Step 2, put the dry mixture into the mixing tank, heat 60% by weight of SBS modified asphalt to 160°C, add it into the mixing tank evenly within 30s, and stir at a stirring speed of 1200rpm for 10min;
[0049] Step 3: Preheat the regenerated asphalt mixed old material to 80°C and add it together with the regeneration agent into the above mixing tank for stirring. The temperature in the mixing tank is maintained at 170°C, the stirring speed is 1200rpm, and the time is 25min. Then add the remaining SBS modified asphalt and conducti...
Embodiment 2-8
[0052] Example 2-8: A purification type recycled asphalt concrete, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.
[0053] Each component and parts by weight thereof in table 1 embodiment 1-8
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Embodiment 9
[0056] Example 9: A purified recycled asphalt concrete, the difference from Example 1 is that the new aggregate mainly consists of particle sizes ranging from 0 to 3mm, 3 to 5mm, 5 to 13mm, 13 to 20mm, and 20 to 25mm The limestone is composed of 1.5:2.5:7.5:1:3.5 in parts by weight.
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