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Asphalt solubility test method

A test method and solubility technology, applied in the field of performance testing of road materials, can solve the problems of large amount of solvent, serious volatilization of trichlorethylene, consumption of manpower and material resources, etc., achieve good accuracy and parallelism, improve test work efficiency, and reduce solvent consumption The effect of consumption

Active Publication Date: 2019-01-08
RES INST OF HIGHWAY MINIST OF TRANSPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the technical problems existing in the prior art, for example: repeated washing with trichlorethylene cannot effectively dissolve, the amount of solvent is large, which consumes manpower and material resources; was forced to terminate; in addition, when the heating method was adopted in the dissolution process, the trichlorethylene volatilized seriously, which was unfavorable to the personal safety of the operators, etc.

Method used

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  • Asphalt solubility test method
  • Asphalt solubility test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Take a piece of dry and clean release paper and weigh about 2g of 70# road petroleum asphalt sample as the asphalt sample, accurate to 0.1mg;

[0062] (2) Take a piece of clean filter paper with an analytical balance, place the asphalt sample prepared in advance on the filter paper and weigh together;

[0063] (3) Fold the filter paper, wrap the asphalt sample tightly, and ensure that the asphalt sample does not leak;

[0064] (4) In a small beaker, use tweezers to pick up the filter paper wrapped in the asphalt sample, soak it in 50mL of trichlorethylene and let it stand for 30min;

[0065] (5) After standing still for 30 minutes, use tweezers to pick up the filter paper wrapped with the asphalt sample, shake it continuously in the trichlorethylene solvent for 5 minutes, and collect the turbid asphalt solution in the waste liquid bottle. Note that there should be no liquid during the shaking process Sprinkle outside;

[0066] (6) Re-add trichlorethylene in the sm...

Embodiment 2

[0080] The 70# road petroleum asphalt sample was replaced with SBS modified asphalt, and the solubility of SBS modified asphalt was tested according to the same method as in Example 1. The specific results are shown in Table 1.

Embodiment 3

[0082] The 70# road petroleum asphalt sample was replaced with natural asphalt-modified asphalt-C, and the solubility of natural asphalt-modified asphalt-C was tested according to the same method as in Example 1. The specific results are shown in Table 1.

[0083] Table 1

[0084]

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Abstract

The invention relates to an asphalt solubility test method. The method comprises the following steps: 1, taking an asphalt sample, wrapping the asphalt sample by a filter device, and weighing the weights of the asphalt sample and the filter device; 2, soaking the filter device which wraps the asphalt sample in trichloro ethylene, and carrying out standing for the first time to ensure that the trichloro ethylene is in contact with the asphalt sample; 3, controlling the filter device which wraps the asphalt sample to periodically move in the trichloro ethylene, and removing the obtained asphaltdissolution solution; 4, retaking trichloro ethylene, soaking the filter device which wraps the asphalt sample in the trichloro ethylene to carry out periodical movement, carrying out standing for thesecond time, and removing the obtained dissolution solution; and 5, repeating the step 4 until the obtained asphalt solution is clear, obtaining filter devices with different insoluble substances, and obtaining weights of the insoluble substances to calculate solubility of the asphalt sample. The method provided by the invention is capable of effectively improving the working efficiency of the test.

Description

technical field [0001] The invention relates to a method for testing the solubility of asphalt, which belongs to the field of performance testing of road materials. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It is liquid with a black surface and is soluble in carbon disulfide. [0003] In the prior art, two methods are generally used to test the solubility of asphalt. 1) The asphalt solubility test method specified in T0607-2011 (hereinafter referred to as "the procedure method") can be used. For the specific test process, please refer to the current JTG E20-2011 The test method is to test the solubility of asphalt; 2) water bath heating method: first, the trichlorethylene solvent is heated, and then used to dilute and dissolve the asphalt sample. Generally, the heating temperature of the solvent needs to be co...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 周震宇刘玉红严二虎王志军常嵘姜博潘树
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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