CN105866108A - Evaluation method for activity of old material of bituminous pavement - Google Patents
Evaluation method for activity of old material of bituminous pavement Download PDFInfo
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- CN105866108A CN105866108A CN201610169741.1A CN201610169741A CN105866108A CN 105866108 A CN105866108 A CN 105866108A CN 201610169741 A CN201610169741 A CN 201610169741A CN 105866108 A CN105866108 A CN 105866108A
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- 239000000463 material Substances 0.000 title claims abstract description 74
- 230000000694 effects Effects 0.000 title claims abstract description 26
- 238000011156 evaluation Methods 0.000 title abstract description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims abstract description 105
- 229960000907 methylthioninium chloride Drugs 0.000 claims abstract description 105
- 125000001475 halogen functional group Chemical group 0.000 claims abstract description 68
- 239000002245 particle Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 239000000725 suspension Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000002244 precipitate Substances 0.000 claims abstract description 11
- 238000007598 dipping method Methods 0.000 claims abstract description 6
- 239000010426 asphalt Substances 0.000 claims description 78
- 239000000843 powder Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 abstract 4
- 230000004308 accommodation Effects 0.000 abstract 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 239000004576 sand Substances 0.000 description 3
- 238000000643 oven drying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- Plasma & Fusion (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Road Paving Machines (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an evaluation method for activity of an old material of a bituminous pavement. The evaluation method comprises the following steps: fixing both a first container and a second container in an accommodation apparatus and forming a methylene blue solution in the first container and a suspension of old material particles of the bituminous pavement in the second container under the rotation action of a driver of the accommodation apparatus, wherein a pipeline capable of controlling the size of liquid flow is arranged between the first container and the second container; opening the pipeline arranged between the first container and the second container, introducing a predetermined amount of the methylene blue solution into the suspension of old material particles of the bituminous pavement, and then closing the pipeline; after predetermined time, dipping a mixed solution of the methylene blue solution and the suspension of old material particles of the bituminous pavement, allowing the mixed solution to drop onto filter paper and observing whether light blue chromatic halo occurs at the edge of a precipitate; and if the light blue chromatic halo occurs, carrying out chromatic halo testing a plurality of times, allowing the chromatic halo to maintain for six periods of predetermined time, recoding the volume of the added methylene blue solution in the six periods of predetermined time when the chromatic halo lasts, and calculating methylene blue value MBV. The method is simple to operate and high in efficiency.
Description
Technical Field
The invention belongs to the field of recycling of asphalt pavements, and particularly relates to an activity evaluation method for old asphalt pavement materials.
Background
The content of fine powder (including mud content and stone powder) in the old asphalt pavement material is evaluated, and a sand equivalent test and a methylene blue test are generally adopted abroad. The sand equivalent test and the methylene blue test are better, and the views show that the sand equivalent test is suitable for the thicker RAP material, and the part which is less than 4.75 mm is adopted in the test. While the methylene blue test is more suitable for a fine RAP material test, even a powder material test smaller than 0.15mm is not suitable for an aggregate larger than 4.75 mm. For the two test methods, China is unfamiliar, and practice needs to be performed and experience is accumulated.
Disclosure of Invention
The evaluation method for the activity of the old material of the asphalt pavement is simple in operation process and high in efficiency.
The technical scheme provided by the invention is as follows:
an activity evaluation method for an old asphalt pavement material comprises the following steps:
step one, a first container and a second container are fixed in a receiver, warm water of 10-40 ℃ is filled in the first container, cold water is filled in the second container, methylene blue powder is placed in the first container, screened old asphalt pavement material particles to be detected are placed in the second container, a pipeline capable of controlling the amount of liquid passing is arranged between the first container and the second container, a driver connected with the receiver is started to enable the receiver to rotate under the action of the driver, the methylene blue powder in the first container forms methylene blue solution, the old asphalt pavement material particles to be detected in the second container form suspension, the concentration of the methylene blue solution is 9-11 g/L, and the concentration of the old asphalt pavement material suspension material particles is 0.35-0.45 g/ml;
continuously keeping the receiver to rotate, opening a pipeline arranged between the first container and the second container, introducing a predetermined amount of methylene blue solution into the suspension of the old asphalt pavement particles, and then closing the container, wherein the volume ratio of the predetermined amount of methylene blue solution to the suspension of the old asphalt pavement particles is 1: 115-1: 99;
step three, after a preset time, dipping a mixed liquid of a methylene blue solution and an asphalt pavement old material particle suspension on filter paper, enabling the diameter of a deposit on the filter paper to be between 9mm and 11mm, and observing whether the edge of the deposit has light blue color halo;
step four, if light blue color halo with the width of about 1.1-2 mm appears at the edge of the precipitate, determining that the test result is positive, performing a color halo test every other preset time, if the color halo disappears in the first preset time, the second preset time, the third preset time, the fourth preset time or the fifth preset time, introducing the predetermined amount of methylene blue solution and continuing to perform the color halo test, and if the color halo disappears in the sixth preset time, introducing the methylene blue solution again, wherein the introduced amount of the methylene blue solution is 2/3 of the predetermined amount, so that the color halo lasts for six preset times;
step five, if the edge of the precipitate does not have light blue color halo, repeating the step two, the step three and the step four;
and step six, when the color halo lasts for six preset times, closing the driver of the receiver, recording the volume of the methylene blue solution added when the color halo lasts for six preset times, and calculating a methylene blue value MBV, wherein the calculation result is expressed as the gram of the methylene blue absorbed by each 1000g of the sample.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, the particle size of the old asphalt pavement material to be tested screened in the step one is less than 2.36mm or less than 0.15 mm.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, the predetermined time is 1 min.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, before the screened old asphalt pavement material particles to be tested are placed in the second container, the method further includes the following steps: and (3) placing the old asphalt pavement material particles into an oven, drying the old asphalt pavement material particles to constant weight at the temperature of 100-110 ℃, and screening the old asphalt pavement material particles to be tested after cooling to room temperature.
Preferably, the method for evaluating the activity of the old asphalt pavement material further comprises the following steps of: the water content of methylene blue powder was determined.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, the predetermined amount of the methylene blue solution is 5ml of the methylene blue solution.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, the step six of calculating the methylene blue value MBV includes: calculating the calculated methylene blue value MBV according to the weight of the asphalt pavement old material particles added into the second container and the volume value of the added methylene blue solution for enabling the color halo to last for six preset times.
Preferably, in the method for evaluating the activity of the old asphalt pavement material, a control device is arranged in a pipeline arranged between the first container and the second container and used for controlling the liquid amount flowing through the pipeline.
The method for evaluating the activity of the old asphalt pavement material at least comprises the following beneficial effects: because the first container and the second container are both fixed in the receiver, and the receiver can rotate under the action of the driver, the methylene blue powder is only needed to be placed into the first container, the old asphalt pavement particles to be detected are placed into the second container, and the first container and the second container are vibrated to form a methylene blue solution and an old asphalt pavement particle suspension through the rotation of the receiver, so that the operation is convenient and the efficiency is high; in the invention, a pipeline capable of controlling the amount of the liquid to be led is arranged between the first container and the second container, when the methylene blue solution needs to be added, the pipeline is opened, the pipeline does not need to be closed when the liquid needs to be led, the operation is very easy, and the accuracy is high because the control device in the pipeline is used for controlling. In the process of carrying out the color halo test, the test is carried out once every other preset time, the methylene blue solution is ensured to be completely adsorbed by the asphalt pavement old material particles, the methylene blue solution is continuously added to enable the color halo to last for a period of time, and the effectiveness of the whole color halo test is ensured. And the receiver does not continuously work in the whole test process, so that the adsorption of the suspension of the old asphalt pavement particles on the methylene blue is accelerated.
Drawings
FIG. 1 is a schematic flow chart of the method for evaluating the activity of the old asphalt pavement material.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the advantages of the technical solution of the present invention more clear, the present invention is described in detail below with reference to fig. 1 and the embodiments.
Example one
The method for evaluating the activity of the old asphalt pavement material comprises the following steps:
step one, fixing a first container and a second container in a receiver, wherein the first container is filled with 1L of warm water at 40 ℃, the second container is filled with 570ml of cold water, 9.5g of methylene blue powder is placed in the first container, 200g of screened to-be-detected asphalt pavement old material particles are placed in the second container, wherein the screened to-be-detected asphalt pavement old material particles are particles smaller than 2.36mm, a pipeline capable of controlling the amount of the liquid passing is arranged between the first container and the second container, a control device is arranged in the pipeline, for controlling the amount of liquid flowing through the pipe, opening a driver connected with the receiver to make the receiver rotate under the action of the driver, further enabling the methylene blue powder in the first container to form a methylene blue solution, and enabling the old asphalt pavement material particles to be detected in the second container to form a suspension;
the method comprises the following steps of firstly, screening out old asphalt pavement particles to be tested, and placing the screened old asphalt pavement particles in a second container, wherein the first step further comprises the following steps: and (3) placing the old asphalt pavement material particles into an oven, drying the old asphalt pavement material particles to constant weight at the temperature of 100-110 ℃, and screening the old asphalt pavement material particles to be detected for later use after cooling to room temperature. Before the methylene blue powder is placed in the first container, the method further comprises the following steps: the water content of methylene blue powder was determined. The specific process for determining the water content is as follows: determination of the moisture content ω in methylene blue: about 5g of methylene blue powder is weighed out and the mass mh is recorded to the nearest 0.01 g. Oven-drying at 100 deg.C + -5 deg.C to constant weight (if the oven-drying temperature exceeds 105 deg.C, the methylene blue powder will deteriorate), cooling in a desiccator, weighing, and recording the mass mg to the nearest 0.01 g. Calculating the water content omega of the methylene blue: ω ═ mg/mg × 100, where: mh-mass of methylene blue powder (g); mb-mass (g) of methylene blue after drying.
The receptacle is provided with a member for fixing the first container and the second container, the first container and the second container are fixed in the receptacle, and the first container and the second container may be beakers or containers of other shapes or materials, which is not limited herein. The receiver rotates under the action of the driver, and can rotate in a single direction or alternatively rotate in two directions.
Continuously keeping the receiver to rotate, opening a pipeline arranged between the first container and the second container, and closing the container after 5ml of methylene blue solution is introduced into the suspension of the old asphalt pavement particles;
step three, after 1min, dipping a mixed liquid of a methylene blue solution and an asphalt pavement old material particle suspension on filter paper, enabling the diameter of a deposit on the filter paper to be about 9mm, and observing whether the edge of the deposit has a light blue color halo;
step four, if light blue color halo with the width of about 1.1mm appears at the edge of the precipitate, determining that the test result is positive, performing a color halo test once after every preset time, if the color halo disappears within the first 1min, 2min, 3min, 4min or 5min, introducing 5ml of methylene blue solution and continuing to perform the color halo test, and if the color halo disappears within the 6 th min, introducing the methylene blue solution again, wherein the amount of the introduced methylene blue solution is 3.3ml, and the color halo lasts for 6 min;
wherein, it is to be noted that, if the halo is disappeared within the first 1min, 5ml of methylene blue solution is required to be introduced, and the steps of step three and step four are performed, if the halo is disappeared within the first 2min, 5ml of methylene blue solution is required to be introduced, and the steps of step three and step four are performed, if the halo is disappeared within the first 3min, 5ml of methylene blue solution is required to be introduced, and the steps of step three and step four are performed, if the halo is disappeared within the first 4min, 5ml of methylene blue solution is required to be introduced, and the steps of step three and step four are performed, and so on until the halo can last for 6 min.
Step five, if the edge of the precipitate does not have light blue color halo, repeating the step two, the step three and the step four;
and step six, when the color halo lasts for 6min, closing a driver of the receiver, recording the volume of the methylene blue solution added when the color halo lasts for 6min, and calculating the calculated methylene blue value MBV according to the weight of the asphalt pavement old material particles added into the second container and the volume value of the methylene blue solution added when the color halo lasts for 6min, wherein the calculation result is expressed as the gram of the methylene blue absorbed by each 1000g of sample. Wherein,in the formula: MBV-the methylene blue value (g/kg), which represents the number of grams of methylene blue consumed per kilogram of 0 to 2.36mm grain size fraction samples; m is the sample mass (g) of the old material particles of the asphalt pavement; v-total amount of methylene blue solution added (mL).
Example two
The method for evaluating the activity of the old asphalt pavement material comprises the following steps:
step one, a first container and a second container are fixed in a receiver, warm water at 30 ℃ is filled in the first container, 500ml of cold water is filled in the second container, 11.5g of methylene blue powder is placed in the first container, 200g of screened old asphalt pavement material particles to be detected are placed in the second container, the size of the screened old asphalt pavement material particles to be detected is smaller than 0.15mm, a pipeline capable of controlling the liquid passing amount is arranged between the first container and the second container, a driver connected with the receiver is started to enable the receiver to rotate under the action of the driver, and then the methylene blue powder in the first container forms a methylene blue solution, so that the old asphalt pavement material particles to be detected in the second container form a suspension;
continuously keeping the receiver to rotate, opening a pipeline arranged between the first container and the second container, and closing the container after 5ml of methylene blue solution is introduced into the suspension of the old asphalt pavement particles;
step three, after 1min, dipping a mixed liquid of a methylene blue solution and an asphalt pavement old material particle suspension on filter paper, enabling the diameter of a deposit on the filter paper to be 11mm, and observing whether the edge of the deposit has a light blue halo;
step four, if light blue color halo with the width of about 2mm appears at the edge of the precipitate, determining that the test result is positive, performing a color halo test every other preset time, if the color halo disappears within the first 1min, 2min, 3min, 4min or 5min, introducing 5ml of methylene blue solution and continuing to perform the color halo test, and if the color halo disappears within the 6 th min, introducing the methylene blue solution again, wherein the amount of the introduced methylene blue solution is 3.3ml, and the color halo lasts for 6 min;
step five, if the edge of the precipitate does not have light blue color halo, repeating the step two, the step three and the step four;
and step six, when the color halo lasts for 6min, closing a driver of the receiver, recording the volume of the methylene blue solution added when the color halo lasts for 6min, and calculating the calculated methylene blue value MBV according to the weight of the asphalt pavement old material particles added into the second container and the volume value of the methylene blue solution added when the color halo lasts for 6min, wherein the calculation result is expressed as the gram of the methylene blue absorbed by each 1000g of sample.
EXAMPLE III
The method for evaluating the activity of the old asphalt pavement material comprises the following steps:
step one, fixing a first container and a second container in a receiver, wherein 1L of warm water at 10 ℃ is filled in the first container, 530ml of cold water is filled in the second container, 10g of methylene blue powder is placed in the first container, 200g of screened old asphalt pavement material particles to be detected are placed in the second container, a pipeline capable of controlling the amount of liquid passing is arranged between the first container and the second container, and a driver connected with the receiver is started to enable the receiver to rotate under the action of the driver, so that the methylene blue powder in the first container forms a methylene blue solution, and the old asphalt pavement material particles to be detected in the second container form a suspension;
continuously keeping the receiver to rotate, opening a pipeline arranged between the first container and the second container, and closing the container after 5ml of methylene blue solution is introduced into the suspension of the old asphalt pavement particles;
step three, after 1min, dipping a mixed liquid of a methylene blue solution and an asphalt pavement old material particle suspension on filter paper, enabling the diameter of a deposit on the filter paper to be 10mm, and observing whether the edge of the deposit has a light blue halo;
step four, if light blue color halo with the width of about 1.5mm appears at the edge of the precipitate, determining that the test result is positive, performing a color halo test every other preset time, if the color halo disappears within the first 1min, 2min, 3min, 4min or 5min, introducing the predetermined amount of methylene blue solution and continuing to perform the color halo test, and if the color halo disappears within the 6 th min, introducing the methylene blue solution again, wherein the amount of the introduced methylene blue solution is 3.3ml, and the color halo lasts for 6 min;
step five, if the edge of the precipitate does not have light blue color halo, repeating the step two, the step three and the step four;
and step six, when the color halo lasts for 6min, closing a driver of the receiver, recording the volume of the methylene blue solution added when the color halo lasts for 6min, and calculating the calculated methylene blue value MBV according to the weight of the asphalt pavement old material particles added into the second container and the volume value of the methylene blue solution added when the color halo lasts for 6min, wherein the calculation result is expressed as the gram of the methylene blue absorbed by each 1000g of sample.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. The method for evaluating the activity of the old asphalt pavement material is characterized by comprising the following steps of:
step one, a first container and a second container are fixed in a receiver, warm water of 10-40 ℃ is filled in the first container, cold water is filled in the second container, methylene blue powder is placed in the first container, screened old asphalt pavement material particles to be detected are placed in the second container, a pipeline capable of controlling the amount of liquid passing is arranged between the first container and the second container, a driver connected with the receiver is started to enable the receiver to rotate under the action of the driver, the methylene blue powder in the first container forms methylene blue solution, the old asphalt pavement material particles to be detected in the second container form suspension, the concentration of the methylene blue solution is 9-11 g/L, and the concentration of the old asphalt pavement material suspension material particles is 0.35-0.45 g/ml;
continuously keeping the receiver to rotate, opening a pipeline arranged between the first container and the second container, introducing a predetermined amount of methylene blue solution into the suspension of the old asphalt pavement particles, and then closing the container, wherein the volume ratio of the predetermined amount of methylene blue solution to the suspension of the old asphalt pavement particles is 1: 115-1: 99;
step three, after a preset time, dipping a mixed liquid of a methylene blue solution and an asphalt pavement old material particle suspension on filter paper, enabling the diameter of a deposit on the filter paper to be between 9mm and 11mm, and observing whether the edge of the deposit has light blue color halo;
step four, if light blue color halo with the width of about 1.1-2 mm appears at the edge of the precipitate, determining that the test result is positive, performing a color halo test every other preset time, if the color halo disappears in the first preset time, the second preset time, the third preset time, the fourth preset time or the fifth preset time, introducing the predetermined amount of methylene blue solution and continuing to perform the color halo test, and if the color halo disappears in the sixth preset time, introducing the methylene blue solution again, wherein the introduced amount of the methylene blue solution is 2/3 of the predetermined amount, so that the color halo lasts for six preset times;
step five, if the edge of the precipitate does not have light blue color halo, repeating the step two, the step three and the step four;
and step six, when the color halo lasts for six preset times, closing the driver of the receiver, recording the volume of the methylene blue solution added when the color halo lasts for six preset times, and calculating a methylene blue value MBV, wherein the calculation result is expressed as the gram of the methylene blue absorbed by each 1000g of the sample.
2. The method for evaluating the activity of the old asphalt pavement material according to claim 1, wherein the particle size of the selected old asphalt pavement material to be tested in the step one is less than 2.36mm or less than 0.15 mm.
3. The method for evaluating the activity of an old asphalt pavement according to claim 2, wherein the predetermined time is 1 min.
4. The method for evaluating the activity of the old asphalt pavement material according to claim 3, wherein the step one of taking the screened old asphalt pavement material particles to be tested and placing the screened old asphalt pavement material particles to be tested in the second container further comprises the following steps: and (3) placing the old asphalt pavement material particles into an oven, drying the old asphalt pavement material particles to constant weight at the temperature of 100-110 ℃, and screening the old asphalt pavement material particles to be tested after cooling to room temperature.
5. The method for evaluating the activity of the old asphalt pavement material according to claim 4, wherein the step of taking methylene blue powder in the step one further comprises the following steps before the step of taking methylene blue powder in the first container: the water content of methylene blue powder was determined.
6. The method for evaluating the activity of an old asphalt pavement according to claim 5, wherein the predetermined amount of the methylene blue solution is 5ml of the methylene blue solution.
7. The method for evaluating the activity of the old asphalt pavement material according to claim 6, wherein the step six of calculating the methylene blue value MBV comprises the following steps: calculating the calculated methylene blue value MBV according to the weight of the asphalt pavement old material particles added into the second container and the volume value of the added methylene blue solution for enabling the color halo to last for six preset times.
8. The method for evaluating the activity of an old asphalt pavement material according to claim 1, wherein a control device is provided in a pipe provided between the first container and the second container for controlling the amount of liquid flowing through the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169741.1A CN105866108B (en) | 2016-03-23 | 2016-03-23 | A kind of old material of asphalt pavement activity rating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169741.1A CN105866108B (en) | 2016-03-23 | 2016-03-23 | A kind of old material of asphalt pavement activity rating method |
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| Publication Number | Publication Date |
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| CN105866108A true CN105866108A (en) | 2016-08-17 |
| CN105866108B CN105866108B (en) | 2018-08-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1990368A1 (en) * | 2007-05-10 | 2008-11-12 | Ceca S.A. | Bituminous road materials, in particular cold-encased and emulsion gravel, and road surface formed using these materials |
| CN103728300A (en) * | 2013-12-09 | 2014-04-16 | 广东省长大公路工程有限公司 | Method for measuring methylene blue (MB) value of machine-made sand |
| CN104062397A (en) * | 2014-07-04 | 2014-09-24 | 北京东方建宇混凝土科学技术研究院有限公司 | Measuring method for MB value of recycled micro-powder |
-
2016
- 2016-03-23 CN CN201610169741.1A patent/CN105866108B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1990368A1 (en) * | 2007-05-10 | 2008-11-12 | Ceca S.A. | Bituminous road materials, in particular cold-encased and emulsion gravel, and road surface formed using these materials |
| CN103728300A (en) * | 2013-12-09 | 2014-04-16 | 广东省长大公路工程有限公司 | Method for measuring methylene blue (MB) value of machine-made sand |
| CN104062397A (en) * | 2014-07-04 | 2014-09-24 | 北京东方建宇混凝土科学技术研究院有限公司 | Measuring method for MB value of recycled micro-powder |
Non-Patent Citations (2)
| Title |
|---|
| 张学军 等: "沥青基活性炭纤维液相吸附亚甲基蓝的研究", 《第九届全国新型炭材料学术研讨会论文集》 * |
| 江涛 等: "沥青混合料水稳定性评价方法研究", 《华东公路》 * |
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| CN105866108B (en) | 2018-08-28 |
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