CN110987679A - Method for detecting dynamic stability of warm-mixed modified asphalt mixture - Google Patents
Method for detecting dynamic stability of warm-mixed modified asphalt mixture Download PDFInfo
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- CN110987679A CN110987679A CN201911357224.7A CN201911357224A CN110987679A CN 110987679 A CN110987679 A CN 110987679A CN 201911357224 A CN201911357224 A CN 201911357224A CN 110987679 A CN110987679 A CN 110987679A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0694—Temperature
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a dynamic stability detection method of a warm-mixed modified asphalt mixture, which can improve the detection accuracy, has a simple process and is convenient to operate. The method for detecting the dynamic stability of the warm-mixed modified asphalt mixture comprises the following steps: s1, preparing a sample; s2, taking the preheated test mold out of the test mold oven, and laying a piece of cut common paper in the test mold to isolate the bottom surface and the side surface of the test mold; s3, filling a test mold, S4, rolling and forming, S5, standing at normal temperature, S6, and placing the test piece and the test mold in a constant temperature chamber with the temperature of 60 ℃ plus 1 ℃; the heat preservation is more than or equal to 5 hours; s7, transferring the test piece and the test die to a test bed of a rut testing machine; and S8, detecting the dynamic stability. The method for detecting the dynamic stability of the warm-mix asphalt mixture is convenient to operate, simple in process and easy to realize, and can effectively improve the detection accuracy.
Description
Technical Field
The invention relates to detection of the stability of an asphalt mixture, in particular to a method for detecting the dynamic stability of an asphalt warm-mix modified asphalt mixture.
Background
It is well known that: the asphalt warm-mix modified asphalt mixture is formed by modulating an asphalt warm-mix modifier with an ore material.
The asphalt warm-mix modifier is a modifier which can reduce the stirring temperature of the modified asphalt mixture by more than 30 ℃ compared with the traditional hot-mix asphalt mixture and mix by utilizing the viscosity reduction effect of the ACMP modifier and can reach or improve the pavement performance index of the mixture. Wherein, the ACMP modifier is produced by utilizing waste rubber, waste plastic, ACMP polymer and surfactant according to a certain proportion and process requirements; can improve the high temperature stability of the asphalt mixture. A low temperature resistant and frost crack resistant asphalt modifier which can be constructed at low temperature.
The dynamic stability is an index for researching rutting deformation, and refers to the number of times of walking of standard axle load borne by the asphalt mixture under the condition of high temperature (the test temperature is typically 60 ℃) when the mixture generates 1mm deformation.
The asphalt mixture is a road material composed of typical viscoelastic material asphalt cementing mineral aggregate and filler, can generate flow deformation under the action of high temperature and load, track is formed by continuous accumulation of the flow deformation, and the asphalt mixture has good high-temperature track resistance so as to meet the actual road performance requirement. There are many factors affecting the high temperature stability of asphalt mixture, which can be divided into internal and external factors.
Experience at home and abroad shows that the ruts are the most main failure mode of the flexible base asphalt pavement. Rutting in asphalt pavements is a result of a combination of factors. Under the condition that the load and the climate are difficult to predict and control, the reasonable mixture design is a feasible method for improving the high-temperature anti-rutting performance of the asphalt mixture.
Asphalt pavements are widely used in highway engineering. In recent years, the use of asphalt pavements, particularly high-grade asphalt pavements, has continued to increase. However, as global climate becomes warm, the temperature of the air is continuously increased, the temperature of the asphalt pavement is also continuously increased, and the traffic volume is continuously increased, so that serious diseases such as rutting are caused, and the service performance of the road is seriously influenced.
Road workers mostly concentrate on the research on how to reduce the temperature of the asphalt pavement, but the research on the high-temperature performance of the asphalt pavement and the like by the temperature is less. Relevant research shows that when the temperature of the asphalt pavement is lower than a certain temperature, the rutting of the asphalt pavement can be generally kept within a millimeter development range; but above a certain temperature the rut depth will rapidly expand at a rate of the order of centimeters.
Therefore, the dynamic stability of the asphalt mixture is an important index of the asphalt used on the road surface; the existing method for detecting the dynamic stability of the asphalt is generally obtained by a rutting test. The conventional detection method has low requirements on sample acquisition, so that the accuracy of the detected dynamic stability is poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing the dynamic stability detection method of the warm-mixed modified asphalt mixture, which can improve the detection accuracy, has simple process and is convenient to operate.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for detecting the dynamic stability of the warm-mixed modified asphalt mixture comprises the following steps:
s1, preparing a sample;
taking a certain mass of ACMP warm-mix modified asphalt mixture; placing the ACMP warm-mixed modified asphalt mixture in an oven with the set temperature of 145 +/-5 ℃ or 125 +/-5 ℃ for ventilation and heat preservation for 3 to 5 hours;
preheating the test mould and the small compaction hammer in a test mould oven at 100 +/-5 ℃ for 1 to 2 hours;
s2, taking the preheated test mold out of the test mold oven, and laying a piece of cut common paper in the test mold to isolate the bottom surface and the side surface of the test mold;
s3, taking out the ACMP warm-mixed modified asphalt mixture in the oven, uniformly mixing the ACMP warm-mixed modified asphalt mixture, putting the mixture into a test mold, and sequentially turning the mixture from side to middle along the test mold and putting the mixture into the test mold; the ACMP warm-mixed modified asphalt mixture in the middle part of the test mold is higher than the surrounding;
compacting the ACMP warm-mixed modified asphalt mixture in the test mould from the edge to the middle by using a small compaction hammer, and leveling the mixture into a convex arc shape; paving paper on the upper surface of the ACMP warm-mix modified asphalt mixture;
s4, rolling and forming;
firstly, preheating a rolling wheel to 100 +/-5 ℃, then placing a test mould filled with the ACMP warm-mixed modified asphalt mixture on a platform of an edge runner mill, and putting down the rolling wheel to adjust the total load to 90 KN;
starting a wheel mill, rolling for 2 times in one direction, and unloading; lifting the rolling wheel, turning the test piece by 180 degrees, and then adding the same load to roll until the Marshall standard compactness reaches 100 +/-1%;
s5, after compacting and forming, removing paper on the upper surface of the ACMP warm-mix modified asphalt mixture, and then marking the rolling direction on the surface of the test piece; placing the test mold together at normal temperature for less than or equal to one week;
s6, placing the test piece and the test mold in a constant temperature chamber with the temperature reaching 60 ℃ plus 1 ℃; the heat preservation is more than or equal to 5 hours;
s7, transferring the test piece and the test mold to a test bed of a rut testing machine, so that the test wheel is located at the center of the test piece; the walking direction of the test piece is consistent with the rolling or driving direction of the test piece; and a thermocouple thermometer is pasted at the part of the test piece where the test wheel does not walk, and the temperature of the test piece is controlled to be stabilized at 60 ℃ plus 0.5 ℃;
s8, starting the automatic rut deformation recorder, and then starting the testing machine to enable the testing wheel to travel back and forth until the time reaches 50-70 min; or the maximum deformation reaches 25 mm; the deformation and the dynamic stability are directly obtained by an automatic rut deformation recorder.
Further, in step S1, weighing a certain mass of the mineral aggregate according to the design gradation, and drying the mineral aggregate in a drying oven at 110 ℃ to constant weight; and then the mineral aggregate is prepared into the ACMP warm-mixed modified asphalt mixture according to the requirements.
Preferably, the rolling direction is marked on the surface of the test piece by powder in step S5.
Further, in step S5, the ACMP warm mix modified asphalt mixture is placed together with the test mold at room temperature for 48 to 72 hours.
The invention has the beneficial effects that: the method for detecting the dynamic stability of the warm-mixed modified asphalt mixture of the asphalt has the following advantages: in the step 1, the ACMP warm mix modified asphalt mixture is subjected to heat preservation, the test mold and the tamping hammer are preheated, and the filling and rolling molding of the sample are realized in the steps S2 to S5, so that the performance of the obtained sample is close to that of the actual asphalt pavement at high temperature and is closer to the actual condition, and the detection accuracy can be improved by detecting the sample. The method for detecting the dynamic stability of the warm-mixed modified asphalt mixture adopts the conventional test mold, sample preparation and detection device, so that the operation is convenient, the process is simple and the realization is easy.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention relates to a method for detecting the dynamic stability of a warm-mixed modified asphalt mixture, which comprises the following steps:
s1, preparing a sample;
taking a certain mass of ACMP warm-mix modified asphalt mixture; placing the ACMP warm-mixed modified asphalt mixture in an oven with the set temperature of 145 +/-5 ℃ or 125 +/-5 ℃ for ventilation and heat preservation for 3 to 5 hours;
preheating the test mould and the small compaction hammer in a test mould oven at 100 +/-5 ℃ for 1 to 2 hours;
s2, taking the preheated test mold out of the test mold oven, and laying a piece of cut common paper in the test mold to isolate the bottom surface and the side surface of the test mold;
s3, taking out the ACMP warm-mixed modified asphalt mixture in the oven, uniformly mixing the ACMP warm-mixed modified asphalt mixture, putting the mixture into a test mold, and sequentially turning the mixture from side to middle along the test mold and putting the mixture into the test mold; the ACMP warm-mixed modified asphalt mixture in the middle part of the test mold is higher than the surrounding;
compacting the ACMP warm-mixed modified asphalt mixture in the test mould from the edge to the middle by using a small compaction hammer, and leveling the mixture into a convex arc shape; paving paper on the upper surface of the ACMP warm-mix modified asphalt mixture;
s4, rolling and forming;
firstly, preheating a rolling wheel to 100 +/-5 ℃, then placing a test mould filled with the ACMP warm-mixed modified asphalt mixture on a platform of an edge runner mill, and putting down the rolling wheel to adjust the total load to 90 KN;
starting a wheel mill, rolling for 2 times in one direction, and unloading; lifting the rolling wheel, turning the test piece by 180 degrees, and then adding the same load to roll until the Marshall standard compactness reaches 100 +/-1%;
s5, after compacting and forming, removing paper on the upper surface of the ACMP warm-mix modified asphalt mixture, and then marking the rolling direction on the surface of the test piece; placing the test mold together at normal temperature for less than or equal to one week;
s6, placing the test piece and the test mold in a constant temperature chamber with the temperature reaching 60 ℃ plus 1 ℃; the heat preservation is more than or equal to 5 hours;
s7, transferring the test piece and the test mold to a test bed of a rut testing machine, so that the test wheel is located at the center of the test piece; the walking direction of the test piece is consistent with the rolling or driving direction of the test piece; and a thermocouple thermometer is pasted at the part of the test piece where the test wheel does not walk, and the temperature of the test piece is controlled to be stabilized at 60 ℃ plus 0.5 ℃;
s8, starting the automatic rut deformation recorder, and then starting the testing machine to enable the testing wheel to travel back and forth until the time reaches 50-70 min; or the maximum deformation reaches 25 mm; the deformation and the dynamic stability are directly obtained by an automatic rut deformation recorder.
Preheating the ACMP warm-mix modified asphalt mixture and preheating a test mold and a small-sized tamping hammer in the step S1; therefore, the raw materials for preparing the sample can meet various requirements, the prepared sample is close to the actual condition to be detected, and the detection accuracy can be improved.
In step S2, the common paper is laid, so that the ACMP warm mix modified asphalt mixture is prevented from contacting the inner wall of the test mold when being filled in the test mold and being adhered to the inner wall and the bottom of the test mold, and the test mold is convenient to clean after the detection is completed.
In step S3, the test mold is loaded into the test mold by turning from side to middle in sequence; the ACMP warm-mixed modified asphalt mixture in the middle part of the test mold is higher than the surrounding; therefore, the uniformity of the density of the sample can be ensured, and the detection precision can be improved.
Compacting the ACMP warm-mixed modified asphalt mixture in the test mould from the edge to the middle by using a small compaction hammer, and leveling the mixture into a convex arc shape; paving paper on the upper surface of the ACMP warm-mix modified asphalt mixture; therefore, the rolling wheel can be prevented from being in direct contact with the ACMP warm-mixed modified asphalt mixture on the upper surface of the ACMP warm-mixed modified asphalt mixture, and the ACMP warm-mixed modified asphalt mixture can be prevented from being adhered to one part of the rolling wheel.
Rolling and forming the sample in the steps S4 and S5; and preparing for subsequent detection work.
In step S6, the temperature of the detection environment is adjusted so that the sample temperature is 60 ℃ +1 ℃.
And obtaining the dynamic stability value of the ACMP warm-mixed modified asphalt mixture through a rutting tester in steps S7 and S8.
In conclusion, the method for detecting the dynamic stability of the warm-mixed asphalt mixture has the following advantages: in the step 1, the ACMP warm mix modified asphalt mixture is subjected to heat preservation, the test mold and the tamping hammer are preheated, and the filling and rolling molding of the sample are realized in the steps S2 to S5, so that the performance of the obtained sample is close to that of the actual asphalt pavement at high temperature and is closer to the actual condition, and the detection accuracy can be improved by detecting the sample. The method for detecting the dynamic stability of the warm-mixed modified asphalt mixture adopts the conventional test mold, sample preparation and detection device, so that the operation is convenient, the process is simple and the realization is easy.
In order to ensure the purity of the ACMP warm-mixed modified asphalt mixture and avoid the influence of water and other impurities in the ACMP warm-mixed modified asphalt mixture on the detection. Further, in step S1, weighing a certain mass of the mineral aggregate according to the design gradation, and drying the mineral aggregate in a drying oven at 110 ℃ to constant weight; and then the mineral aggregate is prepared into the ACMP warm-mixed modified asphalt mixture according to the requirements.
In order to facilitate marking of the rolling direction, further, the rolling direction is marked on the surface of the test piece by powder in step S5.
In order to obtain the best rutting sample, the ACMP warm mix modified asphalt mixture is preferably placed in the step S5 in a manner of being communicated with the test mold at normal temperature for 48 to 72 hours.
Claims (4)
1. The method for detecting the dynamic stability of the warm-mixed modified asphalt mixture is characterized by comprising the following steps of:
s1, preparing a sample;
taking a certain mass of ACMP warm-mix modified asphalt mixture; placing the ACMP warm-mixed modified asphalt mixture in an oven with the set temperature of 145 +/-5 ℃ or 125 +/-5 ℃ for ventilation and heat preservation for 3 to 5 hours;
preheating the test mould and the small compaction hammer in a test mould oven at 100 +/-5 ℃ for 1 to 2 hours;
s2, taking the preheated test mold out of the test mold oven, and laying a piece of cut common paper in the test mold to isolate the bottom surface and the side surface of the test mold;
s3, taking out the ACMP warm-mixed modified asphalt mixture in the oven, uniformly mixing the ACMP warm-mixed modified asphalt mixture, putting the mixture into a test mold, and sequentially turning the mixture from side to middle along the test mold and putting the mixture into the test mold; the ACMP warm-mixed modified asphalt mixture in the middle part of the test mold is higher than the surrounding;
compacting the ACMP warm-mixed modified asphalt mixture in the test mould from the edge to the middle by using a small compaction hammer, and leveling the mixture into a convex arc shape; paving paper on the upper surface of the ACMP warm-mix modified asphalt mixture;
s4, rolling and forming;
firstly, preheating a rolling wheel to 100 +/-5 ℃, then placing a test mould filled with the ACMP warm-mixed modified asphalt mixture on a platform of an edge runner mill, and putting down the rolling wheel to adjust the total load to 90 KN;
starting a wheel mill, rolling for 2 times in one direction, and unloading; lifting the rolling wheel, turning the test piece by 180 degrees, and then adding the same load to roll until the Marshall standard compactness reaches 100 +/-1%;
s5, after compacting and forming, removing paper on the upper surface of the ACMP warm-mix modified asphalt mixture, and then marking the rolling direction on the surface of the test piece; placing the test mold together at normal temperature for less than or equal to one week;
s6, placing the test piece and the test mold in a constant temperature chamber with the temperature reaching 60 ℃ plus 1 ℃; the heat preservation is more than or equal to 5 hours;
s7, transferring the test piece and the test mold to a test bed of a rut testing machine, so that the test wheel is located at the center of the test piece; the walking direction of the test piece is consistent with the rolling or driving direction of the test piece; and a thermocouple thermometer is pasted at the part of the test piece where the test wheel does not walk, and the temperature of the test piece is controlled to be stabilized at 60 ℃ plus 0.5 ℃;
s8, starting the automatic rut deformation recorder, and then starting the testing machine to enable the testing wheel to travel back and forth until the time reaches 50-70 min; or the maximum deformation reaches 25 mm; the deformation and the dynamic stability are directly obtained by an automatic rut deformation recorder.
2. The method for detecting the dynamic stability of the warm-mixed asphalt mixture according to claim 1, wherein the method comprises the following steps: in step S1, weighing a certain mass of mineral aggregate according to design gradation, and drying in an oven at 110 ℃ to constant weight; and then the mineral aggregate is prepared into the ACMP warm-mixed modified asphalt mixture according to the requirements.
3. The method for detecting the dynamic stability of the warm-mixed asphalt mixture according to claim 2, wherein the method comprises the following steps: the rolling direction is marked on the test piece surface by the powder in step S5.
4. The method for detecting the dynamic stability of the warm-mixed asphalt mixture according to claim 2, wherein the method comprises the following steps: in step S5, the ACMP warm mix modified asphalt mixture is communicated with the test mold and placed at normal temperature for 48-72 h.
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| CN201911357224.7A CN110987679A (en) | 2019-12-25 | 2019-12-25 | Method for detecting dynamic stability of warm-mixed modified asphalt mixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279924A (en) * | 2021-11-29 | 2022-04-05 | 郑州大学 | Method for testing water seepage performance of asphalt pavement under hydrodynamic pressure |
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|---|---|---|---|---|
| US20050135879A1 (en) * | 2003-12-18 | 2005-06-23 | Bill Grubba | Method of reconstructing a bituminous-surfaced pavement |
| CN103558366A (en) * | 2013-10-18 | 2014-02-05 | 沈阳建筑大学 | Water stability testing method for large-particle size asphalt mixture |
| CN103556560A (en) * | 2013-10-29 | 2014-02-05 | 云南省公路科学技术研究院 | Preparation method of high-performance warm-mix regenerated asphalt mixture |
| CN103911930A (en) * | 2014-04-25 | 2014-07-09 | 成张佳宁 | Construction method of warm mix asphalt concrete pavement of municipal road |
| CN105865957A (en) * | 2016-03-24 | 2016-08-17 | 北京盛广拓公路科技有限公司 | Testing method for cold-recycling indoor high-temperature stability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114279924A (en) * | 2021-11-29 | 2022-04-05 | 郑州大学 | Method for testing water seepage performance of asphalt pavement under hydrodynamic pressure |
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Application publication date: 20200410 |