Method and system for selecting chemical reagents in measurement of asphalt surface energy

Patent metadata

Field	Value
Publication number	US-2022357308-A1
Application number	US-202217863390-A
Country	US
Kind code	A1
Filing date	Jul 13, 2022
Priority date	Jan 20, 2021
Publication date	Nov 10, 2022
Grant date	—

Abstract

A method and system for selecting chemical reagents in measurement of asphalt surface energy are provided. The method includes: selecting different chemical reagents and obtaining contact angle values formed between the respective chemical reagents and asphalt slides; obtaining asphalt surface energy parameters corresponding to each of combinations of the chemical reagents according to the contact angle values; obtaining variation coefficients of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents and selecting a group of combinations of the chemical reagents according to the variation coefficients; and obtaining numbers of abnormal values of asphalt surface energy components in the group of combinations of the chemical reagents and obtaining a target combination of the chemical reagents according to the numbers of the abnormal values. The combination of the chemical reagents with high stability of testing data can be selected by using the method.

First claim

What is claimed is:

1 . A method for selecting chemical reagents in measurement of asphalt surface energy, comprising:
selecting different chemical reagents and obtaining contact angle values formed between the respective chemical reagents and asphalt slides; obtaining asphalt surface energy parameters corresponding to each of combinations of the chemical reagents according to the contact angle values formed between the respective chemical reagents and the asphalt slides; obtaining variation coefficients of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents and selecting a group of combinations of the chemical reagents from the combinations of the chemical reagents according to the variation coefficients of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents; and obtaining numbers of abnormal values of asphalt surface energy components in the group of combinations of the chemical reagents and obtaining a target combination of the chemical reagents from the group of combinations of the chemical reagents according to the numbers of the abnormal values of the asphalt surface energy components.

2 . The method according to claim 1 , wherein the obtaining contact angle values formed between the respective chemical reagents and asphalt slides, comprises:
calculating variation coefficients of the respective contact angle values formed between the respective chemical reagents and asphalt slides under different testing methods to obtain one testing method with minimum data discrete degree from the different testing methods, and obtaining the contact angle values formed between the respective chemical reagents and the asphalt slides under the one testing method with minimum data discrete degree.

3 . The method according to claim 1 , wherein the obtaining asphalt surface energy parameters corresponding to each of combinations of the chemical reagents according to the contact angle values formed between the respective chemical reagents and the asphalt slides, comprises:
obtaining multiple values of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents according to the contact angle values formed between the respective chemical reagents and the asphalt slides, and obtaining the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents according to the multiple values of the asphalt surface energy parameters and by concurrently taking a minimum fitting error of the asphalt surface energy parameters as a target value.

4 . The method according to claim 3 , wherein the obtaining multiple values of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents according to the contact angle values formed between the respective chemical reagents and the asphalt slides, comprises:
obtaining the multiple values of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents according to the contact angle values formed between the respective chemical reagents and the asphalt slides and a calculation formula of asphalt surface energy parameters, wherein the calculation formula of asphalt surface energy parameters is:

γ
S
-

⁢

γ
L
+

+

γ
S
+

⁢

γ
L
-

+

γ
S

L
⁢
w

⁢

γ
L

L
⁢
w

=

(

1
+

cos
⁢
θ

)

⁢

γ
L

2

,

where γ S Lw is a nonpolar component of asphalt surface energy, γ L Lw is a nonpolar component of chemical reagent surface energy, γ S − is a polar alkali component of asphalt surface energy, γ S + is a polar acid component of asphalt surface energy, γ L − is a polar alkali component of chemical reagent surface energy, γ L + is a polar acid component of chemical reagent surface energy, γ L is a total energy of chemical reagent surface energy, and θ is a contact angle.

5 . The method according to claim 4 , wherein the obtaining the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents according to the multiple values of the asphalt surface energy parameters and by concurrently taking a minimum fitting error of the asphalt surface energy parameters as a target value, comprises:
obtaining the asphalt surface energy parameters corresponding to each of the chemical reagent combinations according to multiple values of each of the asphalt surface energy parameters and by concurrently taking the minimum fitting error as the target value, wherein the minimum fitting error is calculated as that:

Min
=

❘
"\[LeftBracketingBar]"

(

γ
S

L
⁢
W

⁢

γ
L

L
⁢
W

+

Assignees

• Univ Wuhan Tech

Inventors

• Luo Rong
• Niu Longchang
• Tu Chongzhi
• Luo Jing
• Wang Xiang
• Miao Qiang

Classifications

• G01N2013/0208

  by measuring contact angle · CPC title

• G01N13/02

  Investigating surface tension of liquids · CPC title

• G01N33/42 Primary

  Road-making materials (G01N33/38 takes precedence) · CPC title

• G01N19/04

  Measuring adhesive force between materials, e.g. of sealing tape, of coating · CPC title

• G06F17/11

  for solving equations {, e.g. nonlinear equations, general mathematical optimization problems (optimization specially adapted for a specific administrative, business or logistic context G06Q10/04)} · CPC title