A warm-mixed asphalt thin-layer overlay structure of waste cement concrete recycled aggregate and its construction method
A technology of cement concrete and recycled aggregates, which is applied to cohesive pavement, roads, buildings, etc. on site, and can solve the problem of rapid temperature drop in hot-mix asphalt thin-layer overlay construction and the decline in road performance of warm-mix asphalt mixture , hot mix asphalt mixture energy consumption and other problems, to improve the comprehensive utilization rate, reduce energy consumption and exhaust emissions, improve the effect of cooling too fast
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Embodiment 1
[0047] Such as figure 1 As shown, the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay structure of the present invention sequentially includes a warm-mix rubber asphalt bonding layer (2) on the original pavement structure (1) and waste cement concrete Recycled aggregate warm mix asphalt thin layer overlay (3).
[0048] Among them, there is no thickness requirement for the original pavement structure (1) and the warm-mix rubber asphalt bonding layer (2), and the thickness of the warm-mix asphalt thin-layer overlay (3) of waste cement concrete recycled aggregate is 2.5 cm.
[0049] The material of the warm-mix rubber asphalt bonding layer (2) is warm-mix rubber powder modified asphalt, and the parts by weight of the rubber powder-modified asphalt and asphalt warm-mix agent are: 94 parts of rubber powder-modified asphalt, asphalt Warm mixing agent 6 parts.
[0050] The ore gradation of the waste cement concrete recycled aggregate warm-mix asphalt th...
Embodiment 2
[0071] The waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay structure of this embodiment and the preparation method of the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay are the same as in Example 1, only the waste cement concrete recycled aggregate The materials of the warm-mix asphalt thin-layer overlay (3) and the construction methods of the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay structure are different.
[0072] In this embodiment, the mineral material gradation of the waste cement concrete recycled aggregate warm-mix asphalt thin layer overlay (3) is shown in Table 4.
[0073] Table 4 Mineral gradation composition of waste cement concrete recycled aggregate warm mix asphalt mixture in Example 2
[0074]
[0075] The raw materials of waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay (3) described in this embodiment are as follows:
[0076] (1) The ...
Embodiment 3
[0083] The waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay structure of this embodiment and the preparation method of the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay are the same as in Example 1, only the waste cement concrete recycled aggregate The materials of the warm-mix asphalt thin-layer overlay (3) and the construction methods of the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay structure are different.
[0084] In this embodiment, the mineral aggregate gradation of the waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay (3) is shown in Table 5.
[0085] Table 5 Mineral gradation composition of waste cement concrete recycled aggregate warm mix asphalt mixture in Example 3
[0086]
[0087] The raw materials of waste cement concrete recycled aggregate warm-mix asphalt thin-layer overlay (3) described in this embodiment are as follows:
[0088] (1) The...
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