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Method for improving interface adhesion between glass aggregate and asphalt by using nanometer iron oxide

A technology of nano-iron oxide and adhesion, which is applied in the field of preparation of building materials, can solve problems such as poor interface adhesion and failure to meet the technical requirements of coarse aggregates, and achieve increased roughness, saving natural resources, and high safety Effect

Inactive Publication Date: 2017-04-26
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the smooth surface of glass aggregates, compared with ordinary gravel aggregates, the interface adhesion between asphalt and asphalt is relatively poor, which cannot meet the technical requirements of coarse aggregates.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation of glass aggregate specifically comprises the following steps:

[0029] (1) Soak the waste glass in a 10% hydrochloric acid solution for 30 minutes, then take out the glass and put it in clear water to clean it, and take out the glass;

[0030] (2) Place the waste glass in an oven at 50°C±5°C for 10 minutes, and take out the glass after drying;

[0031] (3) Put the waste glass in an oven at 130°C-150°C for 2 hours, take out the waste glass, and put the heated waste glass into cold water to cool it rapidly. At this time, a large number of irregular cracks appear on the glass surface due to internal stress. 10min;

[0032] (4) Take out the glass and tap the glass with a hammer to break the glass. Since there are many cracks inside the glass, there is no splash of broken glass when the hammer taps the glass lightly, which is safe;

[0033] (5) Put the broken glass into a Marshall compactor for compaction, and then sieve it with a sieving machine to obtain...

Embodiment 1

[0036] (1) Sieve the glass aggregates through 13.2mm and 19mm sieves in turn, take 5 regular aggregates with a particle size of 13.2-19mm and a shape close to a cube, wash them with pure water, and place them in an oven at a temperature of 105°C±5°C Dry in the middle, and then put it in the desiccator for later use;

[0037] (2) Tie the glass aggregates one by one in the middle with a thin thread, and use pure water to configure a 50nm nano-iron oxide solution with a mass fraction of 5%. After stirring evenly, lift the glass aggregates, completely immerse them in the solution, and let stand for 5 minute;

[0038] (3) After step (2) is completed, lift the glass aggregate, dry it in the natural environment for 30 minutes, and then place it in an oven at 105°C±5°C for 1 hour, and set 5 parallel test glass aggregate particles for the same sample ;

[0039] (4) Lift the heated glass particles one by one with wires, immerse them in the preheated matrix asphalt (130°C-150°C) for 45...

Embodiment 2

[0044] (1) Sieve the glass aggregates through 13.2mm and 19mm sieves, take 5 regular aggregates with a particle size of 13.2-19mm and a shape close to a cube, wash them with pure water, and place them in an oven at a temperature of 105°C±5°C dried and then placed in a desiccator for later use;

[0045] (2) Tie the glass aggregates one by one in the middle with a thin thread, and use pure water to configure a 50nm nano-iron oxide solution with a mass fraction of 10%. After stirring evenly, lift the glass aggregates, completely immerse them in the solution, and let stand for 5 minute;

[0046] (3) After step (2) is completed, lift the glass aggregate, dry it in the natural environment for 30 minutes, and then place it in an oven at 105°C±5°C for 1 hour, and set 5 parallel test glass aggregate particles for the same sample ;

[0047](4) Lift the heated glass particles one by one with wires, immerse them in the preheated matrix asphalt (130°C-150°C) for 45s, then take them out g...

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Abstract

The invention discloses a method for improving the interface adhesion between glass aggregate and asphalt by using nanometer iron oxide. The nanometer iron oxide is used to improve the interface adhesion between glass aggregate and asphalt in order to improve the glass aggregate utilization rate and realize good adhesion, good durability, small energy consumption and no pollution to environment. The method comprises the following steps: 1, cleaning and drying the glass aggregate for later use; 2, preparing a nanometer iron oxide solution, immersing the glass aggregate in step 1 in the nanometer iron oxide solution, and taking out and drying the glass aggregate after the surface of the glass aggregate is completed infiltrated with the nanometer iron oxide solution; and 3, immersing the glass aggregate obtained in step 2 in hot matrix asphalt to make the surface of the glass aggregate completely wrapped with the matrix asphalt.

Description

technical field [0001] The invention relates to a preparation method of building materials, in particular to a method for improving the interfacial adhesion between glass aggregates and asphalt by using nanometer iron oxide. Background technique [0002] Glass is a transparent solid at room temperature. It forms a continuous network structure when it melts. It is a silicate non-metallic material that gradually increases in viscosity and hardens during cooling. With the development of the construction industry and other industries, a large number of various glasses such as construction, automobile door and window glass, glass containers, electronic glass and glass bottles are widely used in the national economy, resulting in a large increase in waste glass. Waste glass is about 4.5-7.5 million tons, mainly from industry and life, accounting for 3%-5% of the total urban domestic waste. Taiwan produces 600,000 tons of waste glass every year, and Hong Kong produces nearly 120,0...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B20/10
CPCC04B20/1066C04B26/26
Inventor 丘积马子业马方张久鹏张鸿米婕弓步青朱存贞
Owner CHANGAN UNIV
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