Multifunctional three-dimensional grid for asphalt mixture

Abstract

The invention discloses a multifunctional three-dimensional grid for an asphalt mixture. The multifunctional three-dimensional grid is formed by splicing a plurality of three-dimensional grid units arranged on the same plane; the three-dimensional grid units are square grids; each square grid comprises a plurality of transverse support plates arranged in parallel and a plurality of longitudinal straight plates arranged in parallel; the transverse support plates and the longitudinal straight plates are vertically arranged and are arranged on the same plane; the height of each transverse plate is the same as that of each longitudinal straight plate; the plurality of longitudinal straight plates are arranged on the plurality of transverse support plates from left to right; each of the longitudinal straight plates is fixedly connected with the plurality of transverse support plates respectively; one or more rows of through holes are formed in the transverse support plates and the longitudinal straight plates; and each row of through holes comprises a plurality of through holes from front to back. The multifunctional three-dimensional grid has a simple structure, and is reasonable in design, relatively low in input cost, good in application effect, and convenient to construct, wherein the bearing capacity, the high-temperature stability and the integrity of asphalt roads can be effectively improved.

Description

technical field [0001] The invention relates to a geotechnical grid, in particular to a three-dimensional grid of multifunctional asphalt mixture. Background technique [0002] "Geogrid" (gcogrid) is a planar mesh material with open mesh and high strength formed by directional stretching of polymer materials. It uses polypropylene, high-density polyethylene or other polymers as raw materials, adds a certain amount of anti-ultraviolet additives, and is produced by new processes such as hot melting, extrusion and stretching. Geogrid undergoes directional stretching during the manufacturing process, so that the polymer molecules are arranged along the stretching direction, and the bonding force between the molecular chains is strengthened. Compared with other geosynthetic materials, it has light weight, small deformation, and high tensile strength. , low elongation, etc., and has good acid resistance, alkali resistance, corrosion resistance and aging resistance, and good compa...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of actual use, the traditional three-dimensional geogrid with a thickness of 5 cm separates the asphalt mixture in each grid, and the bonding of the asphalt mixture in different grids and the intercalation between the aggregates are constrained. Therefore, the asphalt mixture cannot be effectively bonded together and form an interlocking structure

In addition, the thin-layer geogrids commonly used in pavement are flat (thickness 1cm ~ 1.5cm), and it is generally not well combined with asphalt mixture.

Although the thin-layer geogrid can play a certain anti-crack effect on the open cracks caused by horizontal displacement, it has no obvious effect on the shear-type reflective cracks caused by vertical dislocation, and it can delay fatigue and resist rutting. Poor ability

In addition, the existing thin-layer geogrid does not have the function of vertical drainage

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