Asphalt density and relative density measuring method based on weighing method

A technology of relative density and measurement method, applied in specific gravity measurement, measurement devices, instruments, etc., can solve the problems of large measurement error, large influence of air measurement results, difficult operation of asphalt density and relative density measurement, etc., and achieve the error of test results. Small size, reduced measurement environment requirements, and good wear resistance

Active Publication Date: 2019-02-19
HUNAN LIANZHI BRIDGE & TUNNEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a method for measuring asphalt density and relative density based on the weighing method, which solves the technical problems that the measurement of asphalt density and relative density is difficult, the air has a great influence on the measurement results, and the measurement error is large

Method used

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  • Asphalt density and relative density measuring method based on weighing method
  • Asphalt density and relative density measuring method based on weighing method
  • Asphalt density and relative density measuring method based on weighing method

Examples

Experimental program
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Effect test

Embodiment 1

[0077] Example 1 Method for measuring viscous asphalt density and relative density based on weighing method at 15°C+0.1°C

[0078] 2.1.1 Wash the sample basin with lotion and water, then clean it with anti-sticking agent, then dry it and weigh it (m 1 ), accurate to 0.1g (all weighings in this test are accurate to 0.1g), hereinafter referred to as t1 temperature is 15°C+0.1°C.

[0079] 2.1.2 Determination of water value in sample basin at t1 temperature

[0080] Completely immerse the sample pot including the cover in the constant temperature water tank (extensometer water tank) at the temperature of t1. After constant temperature for 1 hour, take out and wipe off the surface water, and weigh the total mass of the sample basin, water and glass plate at this temperature (m 2 ).

[0081] Then at temperature t1, the water value in the sample basin is m 2 -m 1;

[0082] 2.1.3 Sample preparation, prepare viscous asphalt samples according to the T0602 method in JTGE20-2011 "Te...

Embodiment 2

[0086] Example 2 Method for measuring viscous asphalt density and relative density based on weighing method at 25°C+0.1°C

[0087] 2.1.1 Wash the sample basin with lotion and water, then clean it with anti-sticking agent, then dry it and weigh it (m 1 ), accurate to 0.1g.

[0088] Hereinafter referred to as t1 temperature is 25°C+0.1°C.

[0089] 2.1.2 Determination of water value in sample basin at t1 temperature

[0090] Completely immerse the sample pot including the cover in a constant temperature water bath (extensometer water tank) at temperature t1. After constant temperature for 1 hour, take it out and fill it with water, cover it with a glass plate, wipe off the surface water, and weigh the sample pot and water at this temperature. , the total mass of the glass plate (m 2 ).

[0091] Then at temperature t1, the water value in the sample basin is m 2 -m 1 ;

[0092] 2.1.3 Sample preparation, prepare viscous asphalt samples according to the T0602 method in JTGE20-...

Embodiment 3

[0096] Example 3 Method for Determination of Solid Asphalt Density and Relative Density Based on Gravimetric Method at 15°C+0.1°C

[0097] 2.3.1 Wash the sample basin with lotion and water, then clean it with anti-sticking agent, then dry it and weigh it (m 1 ), accurate to 0.1g, hereinafter referred to as t1 temperature is 15℃+0.1℃;

[0098] 2.3.2 Determination of water value in sample basin at temperature t1

[0099] Completely immerse the sample pot including the cover in a constant temperature water bath (extensometer water tank) at t1 temperature. After constant temperature for 1 hour, take out the cover and cover with a glass plate, wipe off the surface water, and weigh the total of the sample pot, water and glass plate at the temperature respectively. Mass (m 2 ), accurate to 0.1g;

[0100] Then at temperature t1, the water value in the sample basin is m 2 -m 1 ;

[0101] 2.3.3 Before the test, if the sample is wet, it can be dried naturally in a dry and clean env...

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Abstract

The invention provides an asphalt density and relative density measuring method based on a weighing method, comprising the following steps of: 1) performing a first weighing to obtain m1 after pretreating a wide-mouth container with a cover with an anti-sticking agent, injecting water at temperature t1 into the wide-mouth container after thermostatic water-bathing the wide-mouth container at the temperature t1, and performing a second weighing to obtain m2; 2) preparing the to-be-measured asphalt, so as to obtain the prepared asphalt, and performing a third weighing to obtain m3 after puttingthe prepared asphalt into the wide-mouth container; and 3) fully injecting water at temperature t1 into the wide-mouth container filled with the asphalt after thermostatic water-bathing the prepared asphalt and the wide-mouth container at the temperature t1, and performing a fourth weighing to obtain m4. According to the method, the complex specific gravity bottle method is replaced by a simple and practicable weighing method, the effect of air, sample number and the complex operations on measurement results is reduced, the method is simple in operation, and the accuracy of the measured valueis improved; and the test is simple in process, easy to operate, and the test result is small in error.

Description

technical field [0001] The invention relates to the technical field of asphalt density measurement, in particular to a method for measuring asphalt density and relative density based on a weighing method. Background technique [0002] The existing bitumen density and relative density are determined by the pycnometer method in JTG E20-2011 "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" T0603-2011, and the volume of the pycnometer is 20-30ml. [0003] Existing test method mainly adopts small reagent bottle to measure, has the following deficiencies: [0004] (1) The capacity of the pycnometer is 20-30ml, and the bottle is small. When the viscous asphalt sample is about 2 / 3 of the height of the bottle, the sample mass is about 18g; the solid asphalt sample is not less than 5g (generally about 10g) ), the sample size is too small, and the representativeness is not enough; [0005] (2) Asphalt is very sensitive to temperature. It is a material with v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N9/04G01N9/02
CPCG01N9/02G01N9/04G01N2009/022
Inventor 唐银梅罗艺程任昌茂李熙黎凯李颂华胡建林黄纪劲
Owner HUNAN LIANZHI BRIDGE & TUNNEL TECH
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