A kind of preparation method and rolling equipment of prefabricated asphalt concrete surface course

Abstract

The invention discloses a preparing method for a prefabricated asphalt concrete pavement roll. The preparing method includes the steps that modifying agents, liquid asphalt, aggregates, filler and fibers are mixed and stirred to form rollable asphalt concrete; paving processing is carried out on the rollable asphalt concrete, then crushing processing is carried out, and a rollable asphalt concrete layer is obtained; rolling processing is carried out on the rollable asphalt concrete layer by means of a rolling device, and the rollable asphalt concrete layer is wound to form the prefabricated asphalt concrete pavement roll. The rolling device comprises a rail, a winding drum device installed on the rail and used for rolling the prefabricated asphalt concrete pavement, a shoveling device connected with the winding drum device and used for shoveling the prefabricated asphalt concrete pavement so that the winding drum device can conveniently roll the prefabricated asphalt concrete pavement.

Description

technical field [0001] The invention relates to the technical field of roads and bridges, in particular to a method and equipment for preparing a prefabricated asphalt concrete surface course roll. Background technique [0002] The steel bridge deck pavement is different from the general road asphalt concrete pavement, it is directly laid on the orthotropic steel bridge deck. Due to the large flexibility of the orthotropic steel bridge deck, and under the joint influence of driving load, temperature, wind load, earthquake and other natural factors, its force and deformation are more complicated than that of highway pavement or airport pavement, especially under the action of heavy vehicle load The local deformation of the steel bridge deck is larger. There will be obvious stress concentration at the welds between longitudinal stiffeners, longitudinal diaphragms, transverse ribs (or transverse diaphragms) and bridge decks of the bridge deck, which makes the stress on the pav...

AI Technical Summary

Problems solved by technology

The problem of interlayer bonding between SMA concrete and steel plates cannot be ideally solved. Ordinary modified asphalt has a low viscosity, resulting in insufficient shear resistance of concrete and prone to slippage.

SMA concrete needs vibration rolling at the same time, and it is very easy to cause insufficient compaction under the condition of bridge deck resonance, which will cause early diseases.

[0005] At present, the pavement procedure of the steel bridge deck is usually to mix, spread, and roll the asphalt mixture on the construction site to form the asphalt concrete surface layer, and then after the later maintenance, the asphalt concrete surface layer will finally complete the chemical reaction. process, and the direct pavement of steel bridge deck with pre-prepared asphalt concrete surface course has not been reported yet.

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