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A detection method for warm mix agent containing oil-soluble amine surfactant in warm mix asphalt

A technology for surfactants and warm-mix asphalt, which is applied in material analysis by observing the influence of chemical indicators, climate change adaptation, and analysis by making materials react chemically, and can solve the problem that there is no way to detect warm-mix agents, etc. problem, to achieve high practical value and low detection cost

Active Publication Date: 2018-02-09
BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention uses the phenomenon that the solution turns blue after the chemical reaction between the warm mix agent and the bromophenol blue indicator to qualitatively detect whether the warm mix agent exists in the warm mix asphalt. The problem that there is no way to detect the agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A detection reagent for warm mix agent in warm mix asphalt, consisting of the following components in parts by weight

[0029] Isopropanol (100ml), bromophenol blue: 0.2g.

[0030] Using the above warm mix agent detection reagent in warm mix asphalt to detect a certain kind of warm mix asphalt, including the following steps:

[0031] (1) Weigh 1g of warm-mix asphalt into a beaker, then add 50ml of isopropanol, and heat until the isopropanol is slightly boiling and the color turns light yellow;

[0032] (2) Pour out the supernatant in step (1), and add 5 drops of detection reagent, observe the color change of the supernatant, and the color of the supernatant turns blue;

[0033] (3) Pour out the supernatant in step (1), heat and boil the clear liquid, keep boiling for 2 minutes, then drop in the detection reagent, observe the color change of the clear liquid, and the color of the clear liquid becomes bright yellow;

[0034] (4) indicates that the sample to be tested co...

Embodiment 2

[0037] A detection reagent for warm mix agent in warm mix asphalt, consisting of the following components in parts by weight

[0038] Isopropanol (100ml), bromophenol blue: 0.3g.

[0039] Using the above warm mix agent detection reagent in warm mix asphalt to detect a certain kind of warm mix asphalt, including the following steps:

[0040] (1) Weigh 0.5g of warm-mix asphalt into a beaker, then add 40ml of isopropanol, and heat until the isopropanol is slightly boiling and the color turns light yellow;

[0041] (2) Pour out the supernatant in step (1), and add 5 drops of detection reagent, observe the color change of the supernatant, and the color of the supernatant turns blue;

[0042] (3) Pour out the supernatant in step (1), heat and boil the clear liquid, keep boiling for 1 min, then drop in the detection reagent, observe the color change of the clear liquid, and the clear liquid turns blue;

[0043] (4) means that the sample to be tested does not contain warm mixing age...

Embodiment 3

[0046] A detection reagent for warm mix agent in warm mix asphalt, consisting of the following components in parts by weight

[0047] Isopropanol (50ml), bromophenol blue: 0.08g.

[0048] Using the above warm mix agent detection reagent in warm mix asphalt to detect a certain kind of warm mix asphalt, including the following steps:

[0049] (1) Weigh 1.5g of warm-mix asphalt into a beaker, then add 50ml of isopropanol, and heat until the isopropanol is slightly boiling and the color turns light yellow;

[0050] (2) Pour out the supernatant in step (1), add 5 drops of detection reagent, observe the color change of the supernatant, and the color of the supernatant turns bright yellow.

[0051] (3) means that the sample to be tested does not contain warm mixing agent.

[0052] Conclusion: It is consistent with the fact that oil-soluble amine surfactant type warm mixing agent is not added.

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Abstract

The present invention relates to a method for detecting whether warm mix asphalt contains an oil-soluble amine surfactant warm mix agent. The method comprises: (1) weighing a sample to be detected, adding a solvent, and heating until the solvent presents a micro-boiling state and the color is changed into pale yellow; (2) pouring out the supernatant obtained in the step (1), adding a detection reagent in a dropwise manner, and observing the color change of the supernatant; (3) pouring out the supernatant obtained in the step (1), heating the supernatant, adding a detection reagent in a dropwise manner, and observing the color change of the supernatant; and (4) according to the step (2) and the step (3), determining whether the sample to be detected contains the oil-soluble amine surfactant warm mix agent. According to the present invention, the chromogenic reaction detection method has characteristics of not high requirement on test instrument, equipment and testing personnel, low detection cost, high sensitivity, and high practical value.

Description

technical field [0001] The invention belongs to the technical field of warm mixing of highway asphalt pavement, and in particular relates to a detection method for a warm mixing agent containing an oil-soluble amine surfactant in warm mixing asphalt. Background technique [0002] Warm mix asphalt pavement material has been widely concerned and applied due to its advantages of low carbon, environmental protection, energy saving and emission reduction. At present, warm mix asphalt pavement materials based on surfactant-type warm mix agent are commonly used in the market. It has been developed to the third generation. After a certain processing technology, a product with stable quality can be formed, which can reduce the temperature of asphalt mixing and construction. It greatly simplifies the production process in the process of use, does not need to modify the existing mixing equipment, and reduces the dependence on the equipment; at the same time, the large-scale industrial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
CPCY02A30/30
Inventor 柳浩杨炎生王真杨丽英李恩光李宁董雨明李振徐世法索智许鹰金珊珊
Owner BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP
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