CN102735823A - Asphalt water-aging test method - Google Patents
Asphalt water-aging test method Download PDFInfo
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- CN102735823A CN102735823A CN2012102045169A CN201210204516A CN102735823A CN 102735823 A CN102735823 A CN 102735823A CN 2012102045169 A CN2012102045169 A CN 2012102045169A CN 201210204516 A CN201210204516 A CN 201210204516A CN 102735823 A CN102735823 A CN 102735823A
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Abstract
The invention discloses an asphalt water-aging test method. The method comprises the steps that: required asphalt samples and equipments are prepared according to a pressure-aging-vessel-accelerated asphalt aging test specified by highway engineering asphalt and asphalt mixture testing procedures; when the samples are prepared, 10g of water is added into each sample disk; before pressure adjusting, steam with a pressure of 0.2MPa is delivered in, and a total pressure is then adjusted to 2.1MPa according to a method specified by the procedures; when the test is finished, the hot residues in the disks are poured into a vessel; the residues are heated and stirred, such that the gas bubbles are removed, and a performance test can be carried out immediately; the performances of the asphalt obtained by the test is compared with the performances of original non-aged asphalt and the performances of aged asphalt obtained by merely the pressure-aging-vessel-accelerated asphalt aging test, such that the water-aging degree of the asphalt can be accurately determined. With the testing method provided by the invention, the test data is accurate and reliable, the test method is simple and feasible, and the testing is convenient. Therefore, the method has a good popularization value.
Description
Technical field
The present invention is a kind of test method that is used for effective evaluation moisture to the ageing of asphalt facilitation; Not only help accurately to estimate the effect of moisture in the ageing of asphalt process; Help understanding pitch ageing of performance mechanism and reason in actual use simultaneously, belong to asphalt highway detection technique field.
Background technology
The factor that influences ageing of asphalt mainly contains heat, oxygen, light and water etc., the independent or reciprocation of different affecting factors, and the component compatibility and the structure that have changed pitch link form, and asphaltic nature is changed.
Relevant water is to the aspect that influences of ageing of asphalt proterties, and correlative study is pointed out, though pitch is hydrophobic material, under the effect of rainwater, the solable matter in the pitch is rinsed, and also can cause the aged deterioration of pitch.The pH value of water is very big to pitch medium pitch matter, the acid oil water interfacial tension influence that divides.The numerous reasons that cause ageing of asphalt have been enumerated in relevant research, point out that water passes through factors such as heat, oxygen and sunlight, in comprising the whole layer of the bituminous pavement scope of road table, pitch are produced aging action.
The indoor method that pitch is carried out quick aging is comparatively ripe; Its objective is the simulated field aging condition; Quicken the ageing of asphalt process, test the situation of change of pitch, and then its aging proterties is advanced test and appraisal in different operational phase character; Relatively the different pitches ageing-resistant performance and guides the road of pitch to use technology.Yet lack the aging test of simulation pitch water in the present indoor aging test, the therefore effectively effect of analysis moisture in the ageing of asphalt process.
Therefore, the present invention provides a kind of pitch water aging testing method, thus simple possible moisture is carried out effective evaluation to the aging action of pitch.
Summary of the invention
Technical matters:The technical matters that the present invention will solve provides a kind of pitch water aging testing method, in the ageing of asphalt test, introduces moisture, thereby better judges the influence of moisture for ageing of asphalt, the more deep senile cause of understanding pitch and mechanism.
Technical scheme:For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
Step 1: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens needed pitch specimen preparation and the equipment of ageing of asphalt test preparation test;
Step 2: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens the ageing of asphalt test, after having formulated sample, in each Sheng appearance dish, adds 10g water;
Step 3: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens the ageing of asphalt test, before regulating pressure, feeds the water vapor of 0.2MPa earlier, according to the regulation and stipulation method, general pressure is adjusted to 2.1MPa again;
Step 4: after treating off-test, the residue of heat in the dish is poured in the container, after bubble is removed in heating and stirring, can be carried out performance measurement at once;
Step 5: test in the step 4 is obtained asphalt performance; With the not aged asphalt performance of former state and use highway engineering pitch merely and performance that the pressure ageing tank of asphalt testing regulations regulation quickens the aged asphalt that the ageing of asphalt test obtains compares, just can accurately judge the water degree of aging of pitch.
Beneficial effect:The present invention provides a kind of pitch water aging testing method; Can effectively the effect of moisture effectively be dissolved in the accelerated deterioration process of pitch; Thereby the reflection various factors is to the combined influence of ageing of asphalt, than traditional quick aging method, owing to introduced moisture; The influence of moisture be can better reflect, asphalt performance aging reason and mechanism more helped to understand ageing of asphalt.The test method that the present invention proposes, test figure accurately and reliably, test method is simple and feasible, is easy to test, has very excellent generalization values.
Test method of the present invention has not only been carried out effective checking through a large amount of shop experiments, in entity project, has obtained good application simultaneously.Shop experiment and entity project have all been verified rationality, reliability and the practicality of test method of the present invention.
Embodiment
Pitch specimen preparation that test is adopted and equipment are all identical with the pressure ageing tank acceleration ageing of asphalt test (T0630-2011) of " highway engineering pitch and asphalt testing regulations " (JTG E20-2011) regulation; The residue that the sample that also promptly uses obtains as rotating thin film baking oven test method; Test apparatus is the pressure ageing tank; Adopt high temperature and pressurized air in pressure vessel, pitch to be carried out accelerated deterioration, purpose is the deterioration by oxidation that simulation pitch takes place in the road use; Pressure ageing tank according to " highway engineering pitch and asphalt testing regulations " (JTG E20-2011) regulation quickens ageing of asphalt test (T0630-2011); After having formulated sample; Contain in the appearance dish at each and to add 10g water, its objective is for moisture in the simulated roadway use to have influence the surface of pitch; Pressure ageing tank according to " highway engineering pitch and asphalt testing regulations " (JTG E20-2011) regulation quickens ageing of asphalt test (T0630-2011); Before regulating pressure; Feed the water vapor of 0.2MPa earlier, according to the regulation and stipulation method, general pressure is adjusted to 2.1MPa again; The purpose that feeds 0.2MPa water vapor is in order to build humidity environment, thereby effectively reflects the influence of humidity environment to asphalt performance; After treating off-test; The residue of heat in the dish is poured in the container; After bubble is removed in heating and stirring; Can carry out performance measurement at once, the performance of mensuration and the aged asphalt of not aged former state pitch and simple working pressure ageing tank acquisition are compared, just can judge the water degree of aging of pitch.
Claims (1)
1. a pitch water aging testing method is characterized in that comprising the steps:
Step 1: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens needed pitch specimen preparation and the equipment of ageing of asphalt test preparation test;
Step 2: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens the ageing of asphalt test, after having formulated sample, in each Sheng appearance dish, adds 10g water;
Step 3: the pressure ageing tank according to highway engineering pitch and asphalt testing regulations regulation quickens the ageing of asphalt test, before regulating pressure, feeds the water vapor of 0.2MPa earlier, according to the regulation and stipulation method, general pressure is adjusted to 2.1MPa again;
Step 4: after treating off-test, the residue of heat in the dish is poured in the container, after bubble is removed in heating and stirring, can be carried out performance measurement at once;
Step 5: test in the step 4 is obtained asphalt performance; With the not aged asphalt performance of former state and use highway engineering pitch merely and performance that the pressure ageing tank of asphalt testing regulations regulation quickens the aged asphalt that the ageing of asphalt test obtains compares, just can accurately judge the water degree of aging of pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102045169A CN102735823A (en) | 2012-06-20 | 2012-06-20 | Asphalt water-aging test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102045169A CN102735823A (en) | 2012-06-20 | 2012-06-20 | Asphalt water-aging test method |
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| CN102735823A true CN102735823A (en) | 2012-10-17 |
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| CN2012102045169A Pending CN102735823A (en) | 2012-06-20 | 2012-06-20 | Asphalt water-aging test method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760329A (en) * | 2014-02-19 | 2014-04-30 | 重庆交通大学 | Heat, light and water coupled aging test chamber for asphalt |
| CN106814181A (en) * | 2016-12-16 | 2017-06-09 | 河海大学 | One kind specific surface of aggregate from asphalt is peeled off and reclaims bitumen samples method |
| CN106841580A (en) * | 2016-12-30 | 2017-06-13 | 河海大学 | It is a kind of based on consider gather materials mineralogical property influence ageing of asphalt analogue means experimental technique |
| CN109541191A (en) * | 2018-12-19 | 2019-03-29 | 武汉理工大学 | A kind of pitch aqueous solution aging analogue method |
| CN111999238A (en) * | 2020-06-05 | 2020-11-27 | 河海大学 | Indoor simulation asphalt mixture aging method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832994A (en) * | 2010-04-15 | 2010-09-15 | 同济大学 | Method for testing property of low-carbon asphalt and low-carbon asphalt mixtures |
| CN202057574U (en) * | 2011-05-11 | 2011-11-30 | 长安大学 | Device for long-time aging tests of asphalt and asphalt mixture |
-
2012
- 2012-06-20 CN CN2012102045169A patent/CN102735823A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832994A (en) * | 2010-04-15 | 2010-09-15 | 同济大学 | Method for testing property of low-carbon asphalt and low-carbon asphalt mixtures |
| CN202057574U (en) * | 2011-05-11 | 2011-11-30 | 长安大学 | Device for long-time aging tests of asphalt and asphalt mixture |
Non-Patent Citations (2)
| Title |
|---|
| 交通运输部公路科学研究院: "《中华人民共和国行业标准》", 30 November 2011 * |
| 李海军等: "道路沥青在使用过程中的水老化", 《石油学报(石油加工)》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760329A (en) * | 2014-02-19 | 2014-04-30 | 重庆交通大学 | Heat, light and water coupled aging test chamber for asphalt |
| CN106814181A (en) * | 2016-12-16 | 2017-06-09 | 河海大学 | One kind specific surface of aggregate from asphalt is peeled off and reclaims bitumen samples method |
| CN106814181B (en) * | 2016-12-16 | 2019-04-05 | 河海大学 | One kind specific surface of aggregate removing recycling bitumen samples method from asphalt |
| CN106841580A (en) * | 2016-12-30 | 2017-06-13 | 河海大学 | It is a kind of based on consider gather materials mineralogical property influence ageing of asphalt analogue means experimental technique |
| CN106841580B (en) * | 2016-12-30 | 2019-03-01 | 河海大学 | It is a kind of based on consider gather materials mineralogical property influence ageing of asphalt simulator experimental method |
| CN109541191A (en) * | 2018-12-19 | 2019-03-29 | 武汉理工大学 | A kind of pitch aqueous solution aging analogue method |
| CN109541191B (en) * | 2018-12-19 | 2021-01-05 | 武汉理工大学 | Asphalt aqueous solution aging simulation method |
| CN111999238A (en) * | 2020-06-05 | 2020-11-27 | 河海大学 | Indoor simulation asphalt mixture aging method |
| CN111999238B (en) * | 2020-06-05 | 2022-04-08 | 河海大学 | Indoor simulation asphalt mixture aging method |
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Application publication date: 20121017 |