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Reinforced plastic geogrid for roadbed

A technology of geogrid and reinforced plastic, which is applied in the field of geogrid, can solve the problems of poor joint welding strength, inability to promote large-scale use, and limitation of tensile strength, so as to achieve good heat-sealing welding performance and avoid welding peeling force is small , the effect of high tensile strength requirements

Pending Publication Date: 2021-10-15
安徽路宝土工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low tensile strength of the material, the traditional plastic geogrid generally only reaches 40KN / m, while the steel-plastic geogrid generally only reaches 300KN / m due to the poor welding strength of the joints. Therefore, the traditional plastic geogrid’s Tensile strength limits its application
Although the tensile strength of glass fiber geogrid and polyester fiber warp-knitted geogrid is large enough, it can greatly enhance the shear resistance and reinforcement of the soil to improve the integrity and load capacity of the soil, but the glass fiber geogrid The production process of geogrid and polyester fiber warp-knitted geogrid is complicated, and the material cost is high, so it cannot be widely used

Method used

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  • Reinforced plastic geogrid for roadbed
  • Reinforced plastic geogrid for roadbed
  • Reinforced plastic geogrid for roadbed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like image 3 As shown, the preparation method of the above plastic geogrid includes the following steps:

[0028] S1, PP, PET, and PP-G-MAH of 95: 2: 3 are added to the extruder in a certain scale, and the rubber band A is obtained.

[0029] S2, tensile with the rubber band A in the longitudinal direction by the stretching machine, the tensile ratio is 4 times, and the tensile strength of the rubber band A is improved.

[0030] S3, the stretched rubber band A is formed by corona treatment, so that the surface of the rubber band A is polarized, and the surface tension of the rubber band A is increased, the corona treatment is 4mm and the electrode of 4 mm, corona treatment The current intensity is 150mA;

[0031] S4, add MPE to the extruder, melt extruder, to obtain a rubber band B;

[0032] S5, the ribbon B hot melt is composite to the rubber band A to form a composite band;

[0033] S6, a plurality of ribbed band vertical and horizontally, the ribbon B layer of the composi...

Embodiment 2

[0035] A preparation method of a plastic geogrid includes the following steps:

[0036] S1, PP, PET, and PP-G-MAH of 94: 2: 3 are added to the extruder in a certain scale, and the rubber band A is obtained.

[0037] S2, tensile with the rubber band A in the longitudinal direction by stretching machine, the tensile ratio is 2 times, and the tensile strength of the rubber band A is improved.

[0038] S3, the stretched rubber band A is formed by corona, and the surface of the ribbon A is polarized, and the surface tension of the rubber band A is increased, the corona treatment of the ribbon A and the electrode is 3 mm, corona treatment electrode The current intensity is 100 mA;

[0039] S4, add EVA to the extruder to melt extruder to obtain a rubber band B;

[0040] S5, the ribbon B hot melt is composite to the rubber band A to form a composite band;

[0041] S6, a plurality of ribbed band vertical and horizontally, the ribbon B layer of the composite band is bonded to each other, an...

Embodiment 3

[0043] A preparation method of a plastic geogrid includes the following steps:

[0044] S1, PP, PET, and PP-G-MAH of 96: 2: 3 are added to the extruder in a certain scale, and the rubber band A is obtained.

[0045] S2, stretching the rubber band A in the longitudinal direction by the stretching machine, the tensile ratio is 5 times, and the tensile strength of the rubber band A is improved.

[0046] S3, the stretching rubber band A is formed by corona, and the surface of the ribbon is polarized, and the surface tension of the rubber band A is improved, and the corona treatment of the ribbon A and the electrode is 5mm, and the electrode of corona treatment. The current intensity is 200mA;

[0047] S4, 6 carbon polyethylene is added to the extruder to melt extruder to obtain a rubber band B;

[0048] S5, the ribbon B hot melt is composite to the rubber band A to form a composite band;

[0049] S6, a plurality of ribbed band vertical and horizontally, the ribbon B layer of the compo...

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Abstract

The present invention discloses a reinforced plastic geogrid for a roadbed. The reinforced plastic geogrid is formed by criss-cross heat sealing welding of a plurality of composite rib belts, and the composite rib belts are formed by hot melting compounding of rib belts A and rib belts B. The preparation method comprises the following steps: S1, blending and extruding are performed by an extruder to obtain the rib belts A; S2, the rib belt A is stretched in the length direction through a stretching machine; S3, the stretched rib belt A is subjected to corona treatment; S4, melt extrusion is performed by the extruder to obtain a rib belt B; S5, the rib belt B is compounded on the rib belt A in a hot melting mode to form a composite rib belt; and S6, the multiple composite rib belts form the grid through heat seal welding nodes. According to the plastic geogrid disclosed by the invention, the polymer plastics A and B with relatively great difference in melting temperature are adopted and are subjected to online hot melting compounding, and the hot baking surface of one layer is subjected to corona treatment to generate polarization and is better compounded with the layer B, so that the stripping phenomenon of the layer A and the layer B can be avoided, and the mechanical property of the plastic geogrid is improved.

Description

Technical field [0001] The present invention relates to the field of geometric grilles, and in particular, a roadbed reinforcement enhances plastic sole grid. Background technique [0002] Geogrid is a major geotent synthetic material that has unique performance and efficacy compared to other geotextile materials. It is often used as a tendon or composite material such as a reinforced soil structure. Geogrid is divided into four categories: plastic geogrid, steel plastic gear grill, glass fiber gear grid and polyester. [0003] The plastic geogrid and the steel-plastic geogr grid are the most common geogrid, and the plastic geogrid is a plastic to be formed with a square or rectangular polymer mesh, which can be different in the drawing direction. One-way stretching and two-way stretching. Steel plastic gear grille with high strength steel wire (or other fibers), with special treatment, with polyethylene (PE), and add other auxiliaries, by extrusion make it a composite high-stren...

Claims

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Application Information

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IPC IPC(8): E01C3/04B29D28/00
CPCE01C3/04B29D28/00
Inventor 汪弯彭凯侯桂玲
Owner 安徽路宝土工材料有限公司