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Machine-made sand and pitch adhesion evaluation method

An evaluation method and technology of machine-made sand, applied in the direction of using mechanical devices, instruments, measuring devices, etc., can solve problems such as low safety, complicated operation, and long time consumption, and achieve reliable results, simple operation, and strong practicability

Inactive Publication Date: 2015-07-29
XIAN HIGHWAY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a method for evaluating the adhesion of machine-made sand (fine aggregate) and asphalt, so as to solve the problems of time-consuming, complicated operation and safety in existing measurement methods. low problem

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  • Machine-made sand and pitch adhesion evaluation method
  • Machine-made sand and pitch adhesion evaluation method

Examples

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Effect test

Embodiment 1

[0023] Embodiment 1: A method for evaluating the adhesion of machine-made sand and asphalt, mainly comprising the following steps:

[0024] (1) Prepare machine-made sand according to the gradation requirements in Table 1; bake the prepared machine-made sand in an oven at 180°C for at least 4 hours;

[0025] Table 1: Grading of machine-made sand

[0026]

[0027] (2) Prepare No. 90 base asphalt and heat it in a small oven at 150° C., wherein the No. 90 base asphalt oil-stone ratio is 9%;

[0028] (3) Heat the mixing pot to 150°C in advance; prepare the linoleum disc, template, and scraper in advance, spread the linoleum disc on the operating table, and then place the template on the flat linoleum in the center;

[0029] (4) Take machine-made sand with a total mass of 1000g and put it into a mixing pot, add No. 90 base asphalt with a quality of 85g for mixing, and the mixing time is 90s;

[0030] (5) Pour the well-mixed asphalt mortar into the test mold and scrape it quickl...

Embodiment 2

[0045] A method for evaluating the adhesion of machine-made sand and asphalt, mainly comprising the following steps:

[0046] (1) Prepare machine-made sand according to the gradation requirements in Table 1; bake the prepared machine-made sand in an oven at 180°C for at least 4 hours;

[0047] Table 1: Grading of machine-made sand

[0048]

[0049] (2) prepare No. 90 base bitumen, heat in the small baking oven of 150 ℃, wherein No. 90 base bitumen bitumen ratio is 9%;

[0050] (3) Heat the mixing pot to 150°C in advance; prepare the linoleum disc, template, and scraper in advance, spread the linoleum disc on the operating table, and then place the template on the flat linoleum in the center;

[0051] (4) Take machine-made sand with a total mass of 1000g and put it into a mixing pot, add No. 90 base asphalt with a quality of 85g for mixing, and the mixing time is 90s;

[0052](5) Pour the well-mixed asphalt mortar into the test mold and quickly level it. The whole operatio...

Embodiment 3

[0063] Embodiment 3: a method for evaluating the adhesion of machine-made sand and asphalt, mainly comprising the following steps:

[0064] (1) Prepare machine-made sand according to the gradation requirements in Table 1; bake the prepared machine-made sand in an oven at 180°C for at least 4 hours;

[0065] Table 1: Grading of machine-made sand

[0066]

[0067] (2) Prepare No. 90 base asphalt and heat it in a small oven at 150° C., wherein the No. 90 base asphalt oil-stone ratio is 9%;

[0068] (3) Heat the mixing pot to 150°C in advance; prepare the linoleum disc, template, and scraper in advance, spread the linoleum disc on the operating table, and then place the template on the flat linoleum in the center;

[0069] (4) Weigh the machine-made sand with a total mass of 1000g and put it into the mixing pot, add 90g of No. 90 base asphalt for mixing, and the mixing time is 90s;

[0070] (5) Pour the well-mixed asphalt mortar into the test mold and scrape it quickly. The w...

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Abstract

The invention belongs to the technical field of road engineering construction and particularly relates to a machine-made sand and pitch adhesion evaluation method which comprises the following steps of blending machine-made sand and pitch in a blending boiler at a temperature of 150 DEG C, molding a test piece by use of a template, and placing the molded test piece at room temperature for 24 hours; uniformly painting edible oil on the abrasion region at the center of the test piece, placing for 15 minutes and then performing an abrasion test; taking a photo of the abraded test piece, calculating the pitch film stripping area of the abrasion region by use of image processing software, and dividing the pitch film stripping area by the abrasion area of the test piece, thereby obtaining the machine-made sand and pitch adhesion evaluation index, namely the pitch film stripping rate. The machine-made sand and pitch adhesion evaluation method is simple to operate, high in practicability, capable of accurately calculating the pitch film stripping rate, reliable in result and applicable to popularization and application in a construction site.

Description

technical field [0001] The invention belongs to the field of road engineering construction, and in particular relates to a method for evaluating the adhesion of machine-made sand and asphalt. The method can be used to detect the adhesion of machine-made sand (fine aggregate) and asphalt at a construction site. Background technique [0002] Asphalt pavement has the advantages of smooth surface, no joints, comfortable driving, wear resistance, small vibration, low noise, easy maintenance and recyclability, etc., so it has been more and more widely used. At present, machine-made sand is usually used as fine aggregate in high-grade highway asphalt pavement. It has excellent physical properties and can significantly improve the road performance of asphalt mixture. It has received more and more attention. Machine-made sand is used in asphalt pavement. The large-area application has become an inevitable trend. However, with the widespread application of machine-made sand in asphal...

Claims

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Application Information

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IPC IPC(8): G01N19/04
Inventor 郭平房士伟伍石生张娟马庆伟李艳
Owner XIAN HIGHWAY INST
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