CN105300978B - Containing oil soluble amine surfactants warm-mixing agent detection method in a kind of warm-mixed asphalt - Google Patents
Containing oil soluble amine surfactants warm-mixing agent detection method in a kind of warm-mixed asphalt Download PDFInfo
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- CN105300978B CN105300978B CN201510795457.0A CN201510795457A CN105300978B CN 105300978 B CN105300978 B CN 105300978B CN 201510795457 A CN201510795457 A CN 201510795457A CN 105300978 B CN105300978 B CN 105300978B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention relates to containing oil soluble amine surfactants warm-mixing agent detection method in a kind of warm-mixed asphalt, comprise the following steps：(1) testing sample is weighed, and adds solvent, solvent is heated to and is changed into light yellow in slight boiling condition and color；(2) supernatant liquor in step (1) is poured out, and instills detection reagent, observe the color change of clear liquid；(3) supernatant liquor in step (1) is poured out, and heat clear liquid, then detection reagent is instilled, the color change of clear liquid is observed, (4) judge whether contain oil-soluble amine surfactant type warm-mixing agent in testing sample according to step (2) and step (3).Chromogenic reaction detection method in the present invention is less demanding to test apparatus, equipment and testing staff, and testing cost is low, and sensitivity is higher, has higher practical value.
Description
Technical field
The invention belongs to asphalt highway warm mix technical field, and in particular to containing oil soluble amine in a kind of warm-mixed asphalt
Surfactant warm-mixing agent detection method.
Background technology
The advantages of warm-mixed asphalt ground surface material is due to its low-carbon environment-friendly and energy-saving and emission-reduction and obtained it is extensive concern and should
With.At present, what in the market was conventional is the warm-mixed asphalt ground surface material based on surfactant type warm-mixing agent, and it is till now
To the third generation, it is after a kind of oil-soluble amine surfactant type warm-mixing agent is added into pitch, by certain processing technology,
Formed steady quality, pitch can be reduced mix and stir, the product of construction temperature.It enormously simplify production work in use
Skill, it is not necessary to transform existing mixing apparatus, reduce the dependence to equipment；Meanwhile large-scale industrial production
Its qualitative variability is substantially reduced, guarantee is served to the pavement performance of pitch and asphalt.
Whether warm-mixing agent is deposited and is not had detection method also in warm-mixed asphalt at present, and the associated specifications of warm-mixed asphalt do not have also
Make and, quality monitoring and control can not be carried out to it, therefore effectively to be detected to the warm-mixing agent in warm-mixed asphalt, carry
For one kind detection is rapid, easily detection method tool is of great significance.
The content of the invention
The present invention is that blue phenomenon is presented to determine in solution after being chemically reacted using warm-mixing agent with bromophenol blue indicator
Property detection warm-mixed asphalt in whether there is warm-mixing agent, this method is simple and easy, and solving warm-mixing agent in current warm-mixed asphalt does not have
The problem of method detects.
Technical scheme is as follows：
Containing oil soluble amine surfactants warm-mixing agent detection method, comprises the following steps in a kind of warm-mixed asphalt：
(1) testing sample is weighed, and adds solvent, solvent is heated to and is changed into light yellow in slight boiling condition and color；
(2) supernatant liquor in step (1) is poured out, and instills detection reagent, observe the color change of clear liquid；
(3) supernatant liquor in step (1) is poured out, and heats clear liquid, then instill detection reagent, observe the face of clear liquid
Color change,
(4) judge whether contain oil-soluble amine surfactant type temperature in testing sample according to step (2) and step (3)
Mix agent,
The detection reagent is the bromophenol blue indicator being dissolved in neutral organic solvent.
The detection reagent is composed of the following components：10~100ml isopropanols, 0.02~3.0g bromophenol blues.
Preferably, described isopropanol is pure to analyze.
Preferably, the addition of testing sample is 0.1-2.0g in the step (1)；The addition of solvent is：10-
200ml。
Preferably, the solvent in the step (1) is isopropanol.
Preferably, the addition of detection reagent is 3-5 drops in the step (2).
Preferably, the heat time in the step (3) is 1-3min, and the addition of detection reagent is 3-5 drops.
Preferably, whether oil-soluble amine surfactant type warm-mixing agent is contained in testing sample in described step (4)
For：Clear liquid color in step (2) is changed into blueness, and clear liquid color is changed into containing in glassy yellow expression testing sample in step (3)
There is warm-mixing agent；If the clear liquid color in step (2) becomes blueness, clear liquid color is also changed into blueness in step (3), represents testing sample
In be free of warm-mixing agent；If clear liquid is non-discolouring in step (2) or the non-blue change (including light green color, blackish green etc.) of appearance represents to treat
Warm-mixing agent is free of in test sample product.
The principle of the present invention is extraction and indicator colour developing：The warm-mixing agent in warm-mixed asphalt is extracted with isopropanol,
Heating helps speed up this process, and then indicator reacts with warm-mixing agent and generates the material of blueness, so clear liquid is changed into
Blueness；Certainly the extracting substances being dissolved in pitch in isopropanol can also be come out during this, the material that yellow is presented is drip
Some components in green grass or young crops, even if being free of warm-mixing agent, pitch adds isopropanol heating and can also presented in itself becomes yellow this phenomenon, refers to
The material for showing agent detection is clear, colorless in isopropanol.
Directly addition indicator can cause indicator dosage excessive, and the color of indicator can disturb the judgement of color, influence
Testing result；The purpose that indicator is diluted with solvent is exactly that its concentration is reduced, even if so, its dosage when in use
Can not be excessive, at most only 5 drop, otherwise influence testing result.
Therefore in step (1) micro-boiling in light yellow, illustrate the heat time do not grow (if the heat time is long, the depth in pitch
Colour substance also can be extracted out, so as to disturb the judgement of color), it is less so to extract the amount of warm-mixing agent, and warm mix
Agent has certain volatility, and clear liquid long lasting for heating, warm-mixing agent by evaporating in step (3), thereby indicate that agent
Simply mean to show the color after agent color and clear liquid color addition after addition.
Beneficial effects of the present invention are as follows：
1 the invention provides the detection method that warm-mixing agent in warm-mixed asphalt whether there is.
Less demanding to laboratory apparatus, equipment and testing staff in 2 present invention, testing cost is low, has higher practicality
Value.
3 inventors have carried out the measure of mass data to detection method, and the detection method service condition is good, illustrate this
Invention test method is rational, reliable, practical
Embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
Warm-mixing agent detection reagent in a kind of warm-mixed asphalt, is made up of the component including following parts by weight
Isopropanol (100ml), bromophenol blue：0.2g.
Certain warm-mixed asphalt is detected using warm-mixing agent detection reagent in above-mentioned warm-mixed asphalt, including following step
Suddenly：
(1) 1g warm-mixed asphalts are weighed in beaker, then add 50ml isopropanols, be heated to isopropanol in slight boiling condition and
Color is changed into light yellow；
(2) supernatant liquor in step (1) is poured out, and adds 5 drop detection reagents, observe the color change of clear liquid, clearly
Liquid color is changed into blueness；
(3) supernatant liquor in step (1) is poured out, and heats and boil clear liquid, kept fluidized state 2min, then instill
Detection reagent, observes the color change of clear liquid, and clear liquid color is changed into glassy yellow；
(4) represent to contain warm-mixing agent in testing sample.
Conclusion：It is consistent with added with the fact that oil-soluble amine surfactant type warm-mixing agent.
Embodiment 2
Warm-mixing agent detection reagent in a kind of warm-mixed asphalt, is made up of the component including following parts by weight
Isopropanol (100ml), bromophenol blue：0.3g.
Certain warm-mixed asphalt is detected using warm-mixing agent detection reagent in above-mentioned warm-mixed asphalt, including following step
Suddenly：
(1) 0.5g warm-mixed asphalts are weighed in beaker, then add 40ml isopropanols, it is in slight boiling condition to be heated to isopropanol
And color is changed into light yellow；
(2) supernatant liquor in step (1) is poured out, and adds 5 drop detection reagents, observe the color change of clear liquid, clearly
Liquid color is changed into blueness；
(3) supernatant liquor in step (1) is poured out, and heats and boil clear liquid, kept fluidized state 1min, then instill
Detection reagent, observes the color change of clear liquid, and clear liquid color is changed into blueness；
(4) represent to be free of warm-mixing agent in testing sample.
Conclusion：With not being consistent added with the fact that oil-soluble amine class surfactant type warm-mixing agent.
Embodiment 3
Warm-mixing agent detection reagent in a kind of warm-mixed asphalt, is made up of the component including following parts by weight
Isopropanol (50ml), bromophenol blue：0.08g.
Certain warm-mixed asphalt is detected using warm-mixing agent detection reagent in above-mentioned warm-mixed asphalt, including following step
Suddenly：
(1) 1.5g warm-mixed asphalts are weighed in beaker, then add 50ml isopropanols, it is in slight boiling condition to be heated to isopropanol
And color is changed into light yellow；
(2) supernatant liquor in step (1) is poured out, and adds 5 drop detection reagents, observe the color change of clear liquid, clearly
Liquid color is changed into glassy yellow.
(3) represent to be free of warm-mixing agent in testing sample.
Conclusion：With not being consistent added with the fact that oil-soluble amine class surfactant type warm-mixing agent.
Claims (3)
1. containing oil soluble amine surfactants warm-mixing agent detection method, comprises the following steps in a kind of warm-mixed asphalt：
(1) testing sample is weighed, and adds solvent, solvent is heated to and is changed into light yellow in slight boiling condition and color；
(2) supernatant liquor in step (1) is poured out, and instills detection reagent, observe the color change of clear liquid；
(3) supernatant liquor in step (1) is poured out, and heats clear liquid, then instill detection reagent, the color for observing clear liquid becomes
Change；
(4) judge whether contain oil-soluble amine surfactant type warm mix in testing sample according to step (2) and step (3)
Agent；
The detection reagent is the bromophenol blue indicator being dissolved in neutral organic solvent；
Solvent in the step (1) is isopropanol；
The detection reagent is composed of the following components：10~100ml isopropanols, 0.02~3.0g bromophenol blues；
Heat time in the step (3) is 1-3min, and the addition of detection reagent is 3-5 drops；
In described step (4) in testing sample whether containing oil-soluble amine surfactant type warm-mixing agent be：In step (2)
Clear liquid color be changed into blueness, and in step (3) clear liquid color be changed into glassy yellow represent testing sample in contain warm-mixing agent；If step
Suddenly the clear liquid color in (2) becomes blueness, and clear liquid color is also changed into blueness in step (3), represents to be free of warm-mixing agent in testing sample；
If clear liquid is non-discolouring in step (2) or occurs being free of warm-mixing agent in non-blue change expression testing sample.
2. detection method according to claim 1, described isopropanol is pure to analyze.
3. detection method according to claim 1, the addition of testing sample is 0.1-2.0g in the step (1)；It is molten
The addition of agent is：10-200ml.
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| CN105806747A (en) * | 2016-02-24 | 2016-07-27 | 北京建筑大学 | Asphalt-aggregate interface adhesion property testing method |
| CN114062352A (en) * | 2020-08-04 | 2022-02-18 | 中国石油天然气股份有限公司 | Method for identifying warm mixing agent containing amine surfactant in asphalt |
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