JP3863142B2 - Paved road repair method - Google Patents

Description

  The present invention relates to a method for repairing a road surface of an asphalt paved road, and more particularly to a method for repairing a paved road effective for repairing a road surface of a joint portion in a floor slab bridge.

  In general, the road surface is formed by asphalt pavement finishing. When a crack occurs on the road surface of this asphalt pavement, the cracked portion of the asphalt pavement layer is removed and the pavement removal space in the pavement removal space is removed. A tensile strength sheet such as a glass fiber reinforced sheet is laid on the bottom surface, and a new asphalt pavement material is placed on the sheet for repair.

  In addition, in a slab bridge with asphalt pavement on the upper surface of the reinforced concrete floor slab, cracks and other damage tend to occur on the road surface of the joint part. The pavement material layer is removed, the tensile strength sheet is laid on the upper surface of the reinforced concrete floor slab in the pavement material removal space, and a new asphalt pavement material is placed on the sheet for repair.

  However, the above-mentioned tensile strength sheet and pavement are simply surface bonding at the interface, and sufficiently solve the problem of generating new cracks in the repaired asphalt pavement layer due to repeated impacts caused by vehicle running and expansion and contraction due to outside temperature. I can't.

  Further, there is a problem that the sheet is disengaged due to the impact or expansion and contraction, and the sheet loses the crack prevention effect of the asphalt pavement material layer.

The present invention provides a method for repairing a paved road that drastically solves the above problems, and as a means for that, an asphalt comprising a base layer using large-sized crushed stone as an aggregate and a surface layer using small-sized crushed stone In the repair method of a paved road in which a road surface is formed with a paving material layer, a surface layer of the asphalt paving material layer forming the road surface of the paved road is partially removed to form a paving material removal space.

On the other hand, a reinforcing core material having a honeycomb structure is prepared, in which plate-like tape materials made of fiber-reinforced plastic reinforced with glass fibers or carbon fibers are waved in parallel and bonded to each other at the top of each waveform .

A honeycomb-structure reinforcing core made of the fiber-reinforced plastic is installed on the inner bottom surface in the pavement removal space, and an asphalt pavement is placed in the pavement removal space in each cell of the reinforcement core. A lower layer composed of a composite structure of a reinforcing core material and an asphalt pavement material is formed by dense filling, and an upper layer of the asphalt pavement material is formed on the reinforcement core material by placing the asphalt pavement material. This is a method for repairing a paved road, in which a reinforcing core material having a honeycomb structure made of the fiber-reinforced plastic is embedded in an asphalt pavement material layer .

  The honeycomb-structured reinforcing core material is embedded in the asphalt pavement layer with the pavement material filled in each cell, giving the pavement material significant strength against impact and expansion and contraction, and effectively generating the cracks. Can be prevented.

  Hereinafter, the best embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1 and FIG. 2, the reinforcing core material 1 having the above honeycomb structure is formed by bonding the tape materials 2 at the tops of the corrugations while arranging the flexible plate-like tape materials 2 in a wavy shape. A honeycomb structure is used.

  As the tape material 2 forming the reinforcing core material 1, a plastic tape, that is, a plastic reinforcing core material is used. In particular, the reinforcing core material 1 having the honeycomb structure formed by the tape material 2 made of fiber reinforced plastic reinforced with glass fiber or carbon fiber is applied.

  In the reinforcing core material 1 having the honeycomb structure, the tape material 2 has elasticity, and the entire reinforcing core material 1 has elasticity.

Thus, as shown in FIG. 3A, a surface layer, which will be described later, of the asphalt pavement material layer 4 that forms the road surface of the paved road 3 is partially removed to form a pavement material removal space 5 that requires repair.

Next, as shown in FIG. 3B, the reinforcing core material 1 having the honeycomb structure is installed in the pavement material removal space 5. The reinforcing core material 1 is installed in an upright state by supporting the thickness of the lower end plate of the tape material 2 on the inner bottom surface of the pavement material removal space 5 (upper surface of the base layer described later) .

  Next, as shown in FIG. 3C, an asphalt pavement material is placed in the pavement material removal space 5, and the honeycomb structure is placed in the asphalt pavement material layer 4 '(in the repaired asphalt pavement material layer 4'). The reinforcing core material 1 is embedded.

  The reinforcing core 1 is densely filled with asphalt pavement in each cell 1 'to form a lower layer 4a composed of a composite structure of the reinforcing core 1 and pavement, and its upper end (tape upper end). The upper layer 4b of the asphalt pavement material is formed on the asphalt pavement material with a certain thickness on top, thereby forming a structure in which the reinforcing core material 1 is embedded in the repaired asphalt pavement material layer 4 '.

The asphalt pavement layer 4 is generally composed of a base layer using crushed stone with a large particle size as an aggregate and a surface layer using crushed stone with a small particle size. The repair method is a method of repairing by removing only the surface layer.

  The underlayer 6 of the asphalt pavement layer 4 is a layer hardened with chestnut stone or a concrete layer. A floor slab is a floor slab composed of reinforced concrete layers.

  By embedding the reinforcing core material 1 having the honeycomb structure, a significant strength can be imparted to the impact and elongation applied to the repair pavement material, and crack generation can be effectively prevented.

The top view of the reinforcement core material of the honeycomb structure used for the repair method of a paved road. FIG. 2 is a sectional view taken along line AA in FIG. 1. A, B, and C show the process of repairing a paved road, A is a cross-sectional view showing a state where a part of the asphalt pavement layer is removed to form a pavement removal space, and B is the inside of the pavement removal space. Sectional drawing which shows the state which installed the reinforcement core material of the honeycomb structure in FIG. 2, C is sectional drawing which shows the state which laid the asphalt pavement material layer in the pavement material removal space which installed the reinforcement core material of the said honeycomb structure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Reinforcement core material, 1 '... Cell, 2 ... Tape material, 3 ... Paved road, 4 ... Asphalt pavement material layer, 4' ... Casting asphalt pavement material layer (repair asphalt pavement material layer), 4a ... Lower layer, 4b ... Upper layer, 5 ... Paving material removal space, 6 ... Underlayer

Claims (1)

A method for repairing a paved road in which a road surface is formed by an asphalt pavement layer composed of a base layer using a large-sized crushed stone as an aggregate and a surface layer using a small-sized crushed stone, the asphalt forming the road surface of the paved road The surface layer of the pavement material layer is partially removed to form a pavement material removal space, while each tape material is formed in parallel with a plate-like tape material made of fiber-reinforced plastic reinforced with glass fiber or carbon fiber. Are prepared at the top of each corrugated top, and a honeycomb structure reinforcing core material is prepared on the inner bottom surface of the pavement material removal space, and the pavement material removal space is provided. with asphalt paving material to Da設to form a lower layer of composite structure of densely packed reinforcing core material and the asphalt pavement material in each cell of the reinforcing core material within That the pouring of the asphalt paving material to form an upper layer of the asphalt paving material over the reinforcement core, to embed the reinforcing core of a honeycomb structure consisting of the fiber reinforced plastic pouring asphalt paving layer A pavement road repair method.

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