Quantitative detection method for adhesiveness of asphalt and aggregate

A quantitative detection method and adhesion technology, applied in the direction of removing a certain component weighing, measuring device, material weighing, etc., can solve the problems of ambiguity, inability to quantitatively detect, and uncertainty in the test conditions of the boiling method, and achieve It is suitable for promotion, the calculation formula is easy to understand, and the operation process is simple.

Inactive Publication Date: 2018-12-28
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test speed of the water boiling method is fast, the particles are large, the asphalt peels off obviously, and it is easy to observe, and most of the raw aggregates have aggregates with a maximum particle size greater than 13.2mm, so the water boiling method is mostly used to test the adhesion of asphalt and

Method used

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  • Quantitative detection method for adhesiveness of asphalt and aggregate
  • Quantitative detection method for adhesiveness of asphalt and aggregate
  • Quantitative detection method for adhesiveness of asphalt and aggregate

Examples

Experimental program
Comparison scheme
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Example Embodiment

Example 1: Heat the SBS modified asphalt to a flowing state, take 5 regular aggregates with a particle size of 13.2-19 mm and a shape close to a cube in the basalt aggregate, wash them with water, put them in an oven at 105 ° C for 1 hour, and dry them. Then weigh the total mass of the stone 13.656g; put the dried stone into the heated asphalt and fully stir, take it out and let it dry naturally at room temperature to a constant weight, weigh 18.809g of the dried stone, put the stone in In a clean glass bottle, weigh the total mass of the glass bottle and stone 544.963g; fill the glass bottle with water and seal it, put it in a 90°C constant temperature water bath and heat it for 1 hour, then take it out, pour out the mixed liquid in the bottle, and let it dry naturally at room temperature The total mass of dry to constant weight weighing is 544.526g, and the mass loss rate γ of asphalt on the stone surface is calculated. The calculation formula is as follows:

due to 7.2% <γ＝...

Example Embodiment

Example 2: Heat the base asphalt to a flowing state, take 5 regular aggregates with a particle size of 13.2-19mm and a shape close to a cube in the limestone aggregate, wash them with water, put them in an oven at 105 ° C for 1 hour, and weigh them after drying. Take the total mass of the stone 11.836g; put the dried stone into the heated asphalt and stir well, take it out and let it dry naturally at room temperature to a constant weight, weigh 17.763g of the dried stone, and put the stone into a clean glass In the bottle, weigh the total mass of the glass bottle and the stone material 569.763g; fill the glass bottle with water and seal it, put it in a 90°C constant temperature water bath for 1 hour, and then take it out, pour out the mixed liquid in the bottle, and dry it naturally at room temperature until The total mass of constant weight weighing is 569.688g, and the mass loss rate γ of asphalt on the stone surface is calculated. The calculation formula is as follows:

Sinc...

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Abstract

The invention relates to a quantitative detection method for the adhesiveness of asphalt and aggregate. The method comprises the following steps that: A: selecting five pieces of regular aggregate ofwhich the particle size is 13.2-19mm, cleaning, drying and weighing the aggregate, dipping the aggregate into preheated asphalt (a drying oven at a temperature of 160DEG C to be kept warm for 2.5h), and quickly stirring the aggregate to enable the asphalt on the surfaces of stones to be evenly coated; B: taking out the stone coated with the asphalt, cooling to the room temperature, weighing the stone, putting in a clean glass bottle, and weighing the total mass; C: filling the glass bottle with water, sealing the bottle glass, putting in a 90-DEG C constant temperature water bath box to be heated for 1 h, and taking out the glass bottle; D: pouring out mixed liquid in the bottle, drying, weighing the total mass of the stone subjected to the water bath and the stone; and E: according to a mass change before and after the water bath, calculating the quality loss rate of the asphalt on the surface of the stone, and judging an adhesiveness level. The method is clear in conditions and simple in operation, through a quantitative method, the adhesiveness between the asphalt and the aggregate is detected, and the influence of subjective human factors is avoided.

Description

technical field The invention relates to the technical field of performance detection of road building materials, and relates to a quantitative detection method for the adhesion between asphalt and aggregates. Background technique As the binder of asphalt mixture, asphalt binds various aggregates together, making the mixture a complete stress-bearing body. When it rains or water accumulates on the road surface, the asphalt pavement is soaked in water for a long time, and the water will enter the pavement structure layer through the gaps between the asphalt pavement materials, thereby reducing the bonding force between the asphalt pavement materials and causing the asphalt to fall from the surface of the adhered material. Peeling; under the circulation of hydrodynamic pressure, water repeatedly scours the pavement, which causes the asphalt film to peel off from the surface of the material, and finally forms pits and other diseases under the long-term traffic load, which is ha...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N5/00
CPCG01N5/00G01N5/04
Inventor 陈小兵刘晗孔德羽张小飞骆明金陆秀英王振杰
Owner SOUTHEAST UNIV
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