CN114459994A - Method for testing bonding strength of emulsified asphalt - Google Patents
Method for testing bonding strength of emulsified asphalt Download PDFInfo
- Publication number
- CN114459994A CN114459994A CN202210130250.1A CN202210130250A CN114459994A CN 114459994 A CN114459994 A CN 114459994A CN 202210130250 A CN202210130250 A CN 202210130250A CN 114459994 A CN114459994 A CN 114459994A
- Authority
- CN
- China
- Prior art keywords
- emulsified asphalt
- layer material
- adhesive layer
- asphalt
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for testing the bonding strength of emulsified asphalt, which comprises the following steps: prefabricating an asphalt mixture track plate; uniformly coating the adhesive layer material on the asphalt mixture track plate; wherein, the adhesive layer material includes but is not limited to spray type emulsified asphalt or modified emulsified asphalt; sticking one or more spindles matched with a drawing instrument on the surface of the coated adhesive layer material; vertically pulling a spindle by adopting an adhesive force pulling instrument, and reading a test value; and taking one group of test values or the average value of a plurality of groups of test values as the bonding strength of the bonding layer material. The invention can effectively simulate the effect of the sprayed emulsified asphalt after the adhesive layer is sprayed and the adhesive effect of the sprayed emulsified asphalt is judged initially; the construction quality can be effectively detected, the using amount of the spreading type emulsified asphalt is controlled, and the specific construction materials and the construction process are technically guided.
Description
Technical Field
The invention belongs to the technical field of asphalt testing, relates to a method for testing the bonding strength of emulsified asphalt, and particularly relates to a method for testing the bonding strength of spray-type emulsified asphalt or modified emulsified asphalt for a petrochemical and road asphalt pavement bonding layer, which is suitable for measuring the bonding effect of the emulsified asphalt indoors and is used for inspecting and controlling the quality of the bonding layer oil.
Background
With the continuous development of national economy, in new construction and maintenance projects in high-grade highway construction in China, the function and quality of a bonding layer material are not neglected, and higher requirements are provided for the bonding effect between structural layers. The quality of interlayer bonding is one of important factors influencing the service life of the pavement, and if the interlayer bonding is not good, the integrity of the pavement structure is influenced, and the integral resistance of the pavement structure is weakened.
At present, the bonding effect between emulsified asphalt layers is mostly tested by adopting the methods of drawing and shearing effects among small Marshall test pieces or core drilling and sampling on a pavement, and the test pieces have long manufacturing period, large test error and low efficiency and cause certain damage to the pavement. And when the spreading amount of the adhesive layer material is determined, the difference of test data is not large, the difference is not obvious, and the basis cannot be used as the basis for indoor initial judgment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for testing the bonding strength of emulsified asphalt, which is simple, effective and convenient to operate.
The invention discloses a method for testing the bonding strength of emulsified asphalt, which comprises the following steps:
prefabricating an asphalt mixture track plate;
uniformly coating a bonding layer material on the asphalt mixture rut plate; wherein, the adhesive layer material includes but is not limited to spray type emulsified asphalt or modified emulsified asphalt;
sticking one or more spindles matched with a drawing instrument on the surface of the coated adhesive layer material;
vertically pulling a spindle by adopting an adhesive force pulling instrument, and reading a test value;
and taking one group of test values or the average value of a plurality of groups of test values as the bonding strength of the bonding layer material.
As a further improvement of the invention, the asphalt mixture rut plate is AC-10 or AC-13 graded.
As a further improvement of the invention, the adhesive layer material is smeared and then stands for 24 hours at normal temperature.
As a further improvement of the invention, the spindle is glued to the adhesive layer material with AB glue.
As a further improvement of the invention, after the spindle is bonded, the test is carried out after the spindle is placed for 24 hours at normal temperature.
As a further improvement of the invention, the range of the adhesive force drawing instrument is 0.7-20 Mpa.
As a further improvement of the invention, 5-10 spindles are bonded on the surface of the same adhesive layer material.
As a further improvement of the invention, the specification of the asphalt mixture rut plate is 30cm multiplied by 5cm, the weight of the sticky layer material is 72g, and the diameter of the spindle is 20 mm.
Compared with the prior art, the invention has the beneficial effects that:
the method can efficiently, effectively and accurately judge the bonding effect of the emulsified asphalt materials indoors, assist the selection of construction materials, improve the construction efficiency and improve the construction effect.
Drawings
FIG. 1 is a flow chart illustrating a method for testing the bonding strength of emulsified asphalt according to one embodiment of the present invention;
FIG. 2 is a diagram of a test process disclosed in one embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
the invention provides a method for testing the bonding strength of emulsified asphalt, which comprises the following steps: manufacturing a test piece, detecting a test and judging a result;
as shown in fig. 1, the testing method specifically includes:
step 1, prefabricating an asphalt mixture track plate; wherein the content of the first and second substances,
preferably, the specification of the asphalt mixture rutting plate is 30cm multiplied by 5cm, and the asphalt mixture rutting plate is AC-10 or AC-13 or other common grade distribution of the road surface;
the adhesive layer material comprises but is not limited to spray type emulsified asphalt or modified emulsified asphalt, the weight of the adhesive layer material is preferably 72g, and the adhesive layer material is preferably kept stand for 24 hours at normal temperature after being coated;
step 3, adhering one or more spindles matched with the drawing instrument on the surface of the coated adhesive layer material; wherein the content of the first and second substances,
preferably, the spindle and the adhesive layer material are bonded by AB glue, the diameter of the spindle is preferably 20mm, the subsequent tensile test is preferably carried out after the spindle is placed at normal temperature for 24 hours after bonding, 5-10 spindles are preferably bonded on the surface of the same adhesive layer material, and 6 spindles are further preferably bonded;
step 4, vertically drawing the spindle (namely the direction vertical to the bonding surface of the spindle) by using an adhesion force drawing instrument, reading a test value, and observing the condition of an asphalt adhesion fracture interface; wherein the content of the first and second substances,
the range of the adhesive force drawing instrument is 0.7-20 Mpa, and the test process is shown in figure 2;
step 5, taking a group of test values or the average value of a plurality of groups of test values as the bonding strength of the bonding layer material; wherein the content of the first and second substances,
preferably, 6 test values are measured, and the average value of the 6 test values is taken as the bonding strength of the adhesive layer material.
Furthermore, a plurality of different adhesive layer materials can be coated on the same asphalt mixture track plate, so that the bonding strength of different adhesive layer materials can be tested on the same asphalt mixture track plate at the same time.
Example 1
Prefabricating an AC-10 asphalt mixture track plate with the thickness of 30cm multiplied by 5cm, and preparing SBR modified emulsified asphalt with the asphalt content of 50 percent; uniformly coating 72g of SBR modified emulsified asphalt on an asphalt mixture track plate, and standing for 24 hours; 6 spindles with the diameter of 20mm are stuck on the surface of the coated sticky layer material by AB glue, and the test is carried out after the spindle is placed for 24 hours at normal temperature. And (3) drawing by using a drawing device after setting relevant parameters of the instrument, wherein the measuring range is 0.7-20 MPa, reading a test value, and observing the condition of an asphalt adhesion fracture interface. The test results, as shown in table 1:
TABLE 1
Example 2
Prefabricating 30cm multiplied by 5cm AC-20 asphalt mixture track plates, and preparing emulsified asphalt, SBR modified emulsified asphalt and waterborne epoxy modified emulsified asphalt with the asphalt content of 50%. Respectively and uniformly coating 72g of the three materials on an asphalt mixture rut plate, and standing for 24 hours. Three groups of 18 20mm spindles are stuck on the surface of the coated adhesive layer material by AB glue, and the test is carried out after the spindle is placed for 24 hours at normal temperature. And (3) drawing by using a drawing device after setting relevant parameters of the instrument, wherein the measuring range is 0.7-20 MPa, reading a test value, and observing the condition of an asphalt adhesion fracture interface. The test results, as shown in table 2:
TABLE 2
The test results show that the bonding strength of the waterborne epoxy emulsified asphalt is the largest among the three materials.
The invention has the advantages that:
1. compared with the existing bonding strength judgment method, the method does not need to prepare too many test pieces, has relatively simple and convenient test process and high test result accuracy;
2. through parallel comparison tests on various bonding materials, the bonding effects of the various materials can be obviously obtained in the initial material selection stage, and the bonding effects have larger difference. Can provide certain basis for material selection and construction.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for testing the bonding strength of emulsified asphalt is characterized by comprising the following steps:
prefabricating an asphalt mixture track plate;
uniformly coating a bonding layer material on the asphalt mixture rut plate; wherein the adhesive layer material comprises but is not limited to spray type emulsified asphalt or modified emulsified asphalt;
sticking one or more spindles matched with a drawing instrument on the surface of the coated adhesive layer material;
vertically pulling a spindle by adopting an adhesive force pulling instrument, and reading a test value;
and taking one group of test values or the average value of a plurality of groups of test values as the bonding strength of the bonding layer material.
2. The method for testing cohesive strength of an emulsified asphalt as recited in claim 1, wherein the rut plate is of the AC-10 or AC-13 grade.
3. The method for testing adhesive strength of emulsified asphalt according to claim 1, wherein the adhesive layer material is left standing at room temperature for 24 hours after being coated.
4. The method for testing adhesive strength of emulsified asphalt as claimed in claim 1, wherein said spindle is adhered to said adhesive layer material by means of AB glue.
5. The method for testing adhesive strength of emulsified asphalt as claimed in claim 1, wherein the test is carried out after the spindle is bonded and left at room temperature for 24 hours.
6. The method for testing the bonding strength of the emulsified asphalt as claimed in claim 1, wherein the range of the adhesion force drawing instrument is 0.7 to 20 Mpa.
7. The method for testing the bonding strength of emulsified asphalt as claimed in claim 1, wherein 5 to 10 spindles are bonded to the surface of the same adhesive layer material.
8. The method for testing adhesive strength of an emulsified asphalt as claimed in any one of claims 1 to 7,
the specification of the asphalt mixture rut plate is 30cm multiplied by 5cm, the weight of the adhesive layer material is 72g, and the diameter of the spindle is 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210130250.1A CN114459994A (en) | 2022-02-11 | 2022-02-11 | Method for testing bonding strength of emulsified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210130250.1A CN114459994A (en) | 2022-02-11 | 2022-02-11 | Method for testing bonding strength of emulsified asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114459994A true CN114459994A (en) | 2022-05-10 |
Family
ID=81413697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210130250.1A Pending CN114459994A (en) | 2022-02-11 | 2022-02-11 | Method for testing bonding strength of emulsified asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114459994A (en) |
-
2022
- 2022-02-11 CN CN202210130250.1A patent/CN114459994A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Copeland et al. | Moisture sensitivity of modified asphalt binders: Factors influencing bond strength | |
| CN108254307B (en) | Quantitative test method for viscosity of prepreg | |
| CN105651977B (en) | Bituminous paving aging analogue method | |
| Farrar et al. | Recovery and laboratory testing of asphalt emulsion residue: Application of simple aging test and 4-mm dynamic shear rheometer test | |
| Blackman et al. | Fracture tests on structural adhesive joints | |
| CN106483011A (en) | Bituminous paving each layer dynamic testing method and thread gluing device | |
| CN107850517A (en) | For measuring the device of asphalt mixture shearing characteristic | |
| CN108414371A (en) | A kind of lossless detection method of asphalt pavement crack situation | |
| Williams et al. | Evaluation of hot mix asphalt moisture sensitivity using the Nottingham Asphalt test equipment: final report, March 2010. | |
| CN104807750A (en) | Testing method of microscale tension of two self-polymeric proppant particles | |
| CN114459994A (en) | Method for testing bonding strength of emulsified asphalt | |
| Yi et al. | Characterization of the bonding fracture properties of the asphalt-aggregate system using a thin-film interface test | |
| CN206362686U (en) | Drawing type adhesion testing device | |
| CN201464348U (en) | Adhesive force testing device for casting binder of molding sand | |
| Widyatmoko | Some practical aspects of performance related testing of bituminous materials | |
| Wang et al. | Rubber asphalt waterproof adhesive layer for steel bridge gussasphalt pavement | |
| CN109596520A (en) | A kind of wetability material surface icing ice crystal adhesion strength on-line monitoring system method | |
| CN211905047U (en) | Asphalt bonding strength tester | |
| Bhasin et al. | Evaluation of selected laboratory procedures and development of databases for HMA | |
| Fini et al. | Bonding property of bituminous crack sealants in the presence of water | |
| CN112986054A (en) | Quantitative test method for adhesion of asphalt and aggregate | |
| CN221007260U (en) | FRP-concrete interface bonding slip relation experimental device | |
| RU2390004C1 (en) | Method of assessing bonding strength between screen-printing inks and coatings with print media | |
| RU2309397C1 (en) | Method of determining adhesion of gas thermal coatings | |
| CN206974798U (en) | Thread gluing device mounting system in each layer dynamic modulus detection of bituminous paving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |