Old cement concrete paving reconstruction method

Abstract

The invention discloses an old cement concrete paving reconstruction method. The method comprises the following steps: a, cleaning up an original pavement; and b, mixing an artificial reinforced aggregate with an aggregate, paving a mixture on the original pavement, and paving an asphalt mixture, or mixing the artificial reinforced aggregate, the aggregate and the asphalt mixture, and paving the mixture on the old pavement. The artificial reinforced aggregate has a multi-stage space skeleton structure and is mutually embedded and extruded with the aggregate to form an interlocking structure. The specific aggregate and aggregate are adopted to form a mutually-embedded interlocking structure, with the bonding effect of asphalt, the strength of the formed pavement structure layer is higher, the artificial reinforced aggregate and the aggregate do not slip under the vehicle-mounted effect, high internal friction resistance can be formed after the artificial particles and the common aggregate are embedded and extruded, the aggregate cannot slip, the plastic flow trend cannot be generated under the action of external horizontal load, the interlocking effect is strong, and the stability and the deformation resistance of the asphalt mixture can be improved.

Description

technical field [0001] The invention relates to the field of reconstruction of waste and old roads, in particular to a method for overlaying and reconstruction of old cement concrete. Background technique [0002] At present, a considerable part of the existing cement concrete pavement in our country has approached or exceeded the design period, although some have not reached the design period, but due to the sharp increase in traffic volume, the increasingly heavy vehicle axle load and the design, construction and other reasons, This leads to damage to the road surface and a decline in the quality of use, which affects the use of the road, and urgently needs to be remodeled and repaired. Compared with asphalt pavement, the repair of cement concrete pavement is more difficult. The overhaul measures that can be adopted include adding asphalt concrete surface, adding new cement concrete surface and renovation. Because the asphalt overlay can effectively improve the performanc...

AI Technical Summary

Problems solved by technology

However, the rapid development of reflective cracks in the asphalt overlay will affect the service life of the overlay, and how to control the generation time and expansion speed of reflective cracks is still a difficult problem.

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