Graded gravel mixture

A technology for grading gravel and mixing materials, which is applied in the direction of buildings, roads, and coagulating pavements laid on site. Effects of stability, improved strength, and improved mechanical properties

Inactive Publication Date: 2017-11-03
常州欣彬纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problems of the traditional graded crushed stone mixture structure layer is low

Method used

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Examples

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Example Embodiment

[0021] Example 1

[0022] Weigh the titanium dioxide into the muffle furnace, heat it up to 600℃, calcinate at a high temperature for 6 hours, take it out and cool it, pour it into a mortar and grind it into powder to obtain activated nano-titanium dioxide powder; select 80 parts by weight of 3~25mm. Graded crushed stone particles, 20 parts of expanded graphite, 5 parts of activated nano titanium dioxide powder, 5 parts of iron tailings slag, 10 parts of quartz sand, 2 parts of sodium nitrate and 3 parts of barium nitrate, put them in a high-speed mixer and mix them evenly. Mixture: Divide the mixture into 3 parts, and grind them in a grinder, respectively, and grind them into three particle sizes of 0.8mm, 5mm, and 20mm. After mixing, the aggregate raw materials are obtained; Weigh the epoxy resin and add it to the reaction kettle, heat up to 85°C, keep stirring for 20 minutes, then add 30% absolute ethanol by weight of epoxy resin and 15% ethylene glycol monobutyl ether by weig...

Example Embodiment

[0023] Example 2

[0024] Weigh the titanium dioxide into the muffle furnace, heat it up to 600℃, calcinate at a high temperature for 6 hours, take it out and cool it, pour it into a mortar and grind it into powder to obtain activated nano-titanium dioxide powder; select 80 parts by weight of 3~25mm. Graded crushed stone particles, 20 parts of expanded graphite, 5 parts of activated nano titanium dioxide powder, 5 parts of iron tailings slag, 10 parts of quartz sand, 2 parts of sodium nitrate and 3 parts of barium nitrate, put them in a high-speed mixer and mix them evenly. Mixture: Divide the mixture into 3 parts, and grind them in a grinder, respectively, and grind them into three particle sizes of 0.8mm, 5mm, and 20mm. After mixing, the aggregate raw materials are obtained; Weigh the epoxy resin and add it to the reaction kettle, heat up to 85°C, keep stirring for 20 minutes, then add 30% absolute ethanol by weight of epoxy resin and 15% ethylene glycol monobutyl ether by weig...

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Abstract

The invention relates to a graded gravel mixture, and belongs to the technical field of pavement materials. The graded gravel mixture mainly comprises an aggregate raw material, modified polyacrylonitrile fiber and expanded graphite, wherein the aggregate raw material is prepared according to the following steps: calcinating and griunding titanium dioxide to obtain activated nanometer titanium dioxide powder, then mixing graded gravel particles, the activated nanometer titanium dioxide powder and the like to obtain a mixed material, equally dividing the mixed material into 3 parts, grinding into particles with three particle sizes, and mixing to obtain the aggregate raw material; polyacrylonitrile fiber is modified according to the following steps: mixing epoxy resin with anhydrous ethanol and the like, performing a heat-preserving reaction to obtain a reaction solution, mixing the polyacrylonitrile fiber with a modifying solution and the like, and drying to obtain the modified polyacrylonitrile fiber. In the graded gravel mixture provided by the invention, a coarse material forms a framework, and gaps in the coarse material framework are filled with a fine material, so that improvement on the compactness and the stability of an overall structure is facilitated and the effects of improving the strength of the graded gravel material and resisting the shear deformation are relatively obvious.

Description

technical field [0001] The invention relates to a graded crushed stone mixture, which belongs to the technical field of pavement materials. Background technique [0002] Setting loose flexible materials such as graded gravel between the asphalt pavement and the semi-rigid base is an effective method to delay the reflective cracking of asphalt pavement. High-quality graded crushed stone is used as the transition layer of semi-rigid pavement structure, which can reduce stress and effectively prevent the occurrence of reflective cracks on semi-rigid pavement, thereby delaying or eliminating other diseases of asphalt pavement. The main advantages of graded crushed stone are: ① Absorb and reduce the tip stress of semi-rigid base, reduce and delay the occurrence of reflection cracks; The use quality of the pavement and prolonging the service life are extremely important; ③graded gravel is easy to obtain high compactness, and at the same time, the lower layer with higher rigidity ...

Claims

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Application Information

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IPC IPC(8): C04B30/02E01C7/04C04B20/02C04B16/06
CPCC04B30/02C04B20/023C04B2111/0075C04B2201/50E01C7/04C04B14/02C04B14/305C04B20/008C04B18/12C04B14/06C04B22/085C04B16/0658C04B14/024
Inventor 黄彬彬薛焱璟陈春
Owner 常州欣彬纺织品有限公司
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