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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 in strength, variable, loose and difficult to form a whole, and easily leads to network cracking of the pavement layer, a graded crushed stone mixture is provided

Method used

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Examples

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example 1

[0022] Weigh titanium dioxide and put it into a muffle furnace, heat up to 600°C, calcinate at 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 gravel particles, 20 parts of expanded graphite, 5 parts of activated nano-titanium dioxide powder, 5 parts of iron tailings, 10 parts of quartz sand, 2 parts of sodium nitrate and 3 parts of barium nitrate are put into a high-speed mixer and mixed evenly to obtain Mixed material: divide the mixed material into 3 parts, put them into a grinder and grind them respectively, and grind them into three particle sizes of 0.8 mm, 5 mm and 20 mm respectively, and mix to obtain aggregate raw materials; Weigh the epoxy resin and add it to the reaction kettle, raise the temperature to 85°C, keep stirring for 20 minutes, then add 30% absolute ethanol by epoxy resin quality and 15% ethylene glycol monobuty...

example 2

[0024] Weigh titanium dioxide and put it into a muffle furnace, heat up to 600°C, calcinate at 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 gravel particles, 20 parts of expanded graphite, 5 parts of activated nano-titanium dioxide powder, 5 parts of iron tailings, 10 parts of quartz sand, 2 parts of sodium nitrate and 3 parts of barium nitrate are put into a high-speed mixer and mixed evenly to obtain Mixed material: divide the mixed material into 3 parts, put them into a grinder and grind them respectively, and grind them into three particle sizes of 0.8 mm, 5 mm and 20 mm respectively, and mix to obtain aggregate raw materials; Weigh the epoxy resin and add it to the reaction kettle, raise the temperature to 85°C, keep stirring for 20 minutes, then add 30% absolute ethanol by epoxy resin quality and 15% ethylene glycol monobuty...

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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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