CN209182277U - The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content - Google Patents
The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content Download PDFInfo
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- CN209182277U CN209182277U CN201821994146.2U CN201821994146U CN209182277U CN 209182277 U CN209182277 U CN 209182277U CN 201821994146 U CN201821994146 U CN 201821994146U CN 209182277 U CN209182277 U CN 209182277U
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- moisture content
- marshal piece
- measuring apparatus
- insulation resistance
- plastic plate
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Abstract
The utility model provides a kind of electric resistance measuring apparatus of quickly detection asphalt pavement material moisture content, part is measured including indoor resistivity measurement part and field resistance rate, indoor resistivity determination part point includes marshal piece and Insulation Resistance Tester, marshal piece after immersion is fixed by fixture, and upper end, the lower end of marshal piece are also connected by a copper sheet with two electrodes of Insulation Resistance Tester respectively；Field resistance rate determination part point includes bituminous pavement and Insulation Resistance Tester, and two copper sheets pass through conduction and are adhesive on bituminous pavement, and are connected with two electrodes of another Insulation Resistance Tester.The moisture content that the utility model is suitable for the materials such as building stones, bituminous concrete quickly measures, easy to operate, and safety coefficient is high, and the requirement to experiment equipment is simple, and measurement accuracy is high, is suitable for various research institutes, and the work and teaching of the scientific research institutions such as school need.
Description
Technical field
The utility model relates to technical field of road engineering, more particularly to a kind of quickly detection asphalt pavement material moisture content
Electric resistance measuring apparatus.
Background technique
Pitch water damage is earliest one of the serious disease of bituminous pavement damage problem, and wherein water is the head for generating Moisture Damage
Want condition.For asphalt once for a long time under Riddled Condition, moisture is just easy to the interface that asphalt and aggregate are arrived in infiltration,
The cohesive force for making to gather materials between pitch to replace the cohesive force of asphalt and aggregate, which dies down, to be even lost, and Moisture Damage is caused,
It is eventually exhibited as the overall mechanical properties and loss of strength of asphalt.
Currently, there are two types of the evaluation methods and evaluation index of asphalt anti-water damage property: commonplace method
Be discrete particles adhesiveness experiment, wherein water-boiling method we the most be familiar with, static bowssening is also more commonly used；Another side
Method is the Moisture Damage experiment of compound test specimen, including the experiment of immersion Marshall, freeze-thaw split experiment and rutting test in water
Deng.
Above method mainly passes through the water sensitivity of the decay degree analyzing mixture of mechanics index of physics, but to asphalt road
Water-cut variation situation inside face lacks effective detection means.Though live coring can obtain the core sample of bituminous pavement, take
Core process can significantly affect test specimen moisture content.Therefore, how in situ the moisture content of bituminous pavement is carried out under state
Detection is the big technical problem faced at present.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of electricity of quickly detection asphalt pavement material moisture content
Hinder measuring device.
To achieve the above object, the utility model adopts the following technical solutions:
The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content, including indoor resistivity measurement are partially and existing
Field determination of resistivity part,
Indoor resistivity measures part, for measuring the marshal piece resistivity prepared, including marshal piece and
Insulation Resistance Tester, the marshal piece after immersion are fixed by fixture, and fixture includes the upper plastics for all having circular concave
Plate and lower plastic plate, upper end, the lower end of marshal piece also pass through two electrodes of a copper sheet and Insulation Resistance Tester respectively
It is connected；
Field resistance rate measures part, for measuring bituminous pavement resistivity, including bituminous pavement and megger test
Instrument, two copper sheets pass through conduction and are adhesive on bituminous pavement, and two electrode phases with another Insulation Resistance Tester
It connects, is also respectively provided with the counterweight that can be reduced contact resistance on two copper sheets.
The technical solution of the utility model further includes, the upper end of the marshal piece, lower end respectively with upper plastic plate, under
The circular concave of plastic plate is in contact.
The technical solution of the utility model further includes, solid by multiple bolts between the upper plastic plate and lower plastic plate
It is fixed.
The technical solution of the utility model further includes that upper end, the lower end of the marshal piece are uniformly coated with conducting resinl.
The technical solution of the utility model further includes that weight, the shape of two counterweights are all the same.
The utility model has the beneficial effects that
1, the moisture content that the utility model is suitable for the materials such as building stones, bituminous concrete quickly measures, easy to operate, safety
Coefficient is high, and the requirement to experiment equipment is simple, and measurement accuracy is high, is suitable for various research institutes, the work of the scientific research institutions such as school
And teaching needs.
2, it has simulated a kind of immersion and temperature environment, road construction material test specimen can reside in this true environment
Under, it can more accurately and conveniently measure the moisture content of road construction material.
3, the influence in different soaking times and temperature road pavement construction material water absorption rate, road pavement material Moisture Damage are studied
Research be of great significance, road pavement Moisture Damage research play very big booster action.
Detailed description of the invention
Fig. 1 is that indoor resistivity measures partial structure diagram in the utility model；
Fig. 2 is that field resistance rate measures partial structure diagram in the utility model；
Wherein, 1- Insulation Resistance Tester, 2- bolt, 3- marshal piece, 4- copper sheet, 5- plastic plate, 6- conducting resinl, 7-
Counterweight, 8- bituminous pavement.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content, including indoor resistivity measurement are partially and existing
Field determination of resistivity part,
Indoor resistivity measures part, for measuring 3 resistivity of marshal piece prepared, including marshal piece 3
With Insulation Resistance Tester 1, the marshal piece 3 after immersion is fixed by fixture, and fixture includes all have circular concave upper
Plastic plate 5 and lower plastic plate 5, upper end, the lower end of marshal piece 3 also pass through a copper sheet 4 and Insulation Resistance Tester 1 respectively
Two electrodes are connected；
Field resistance rate measures part, for measuring 8 resistivity of bituminous pavement, including bituminous pavement 8 and insulation resistance survey
Instrument 1 is tried, two copper sheets 4 are sticked on bituminous pavement 8 by conducting resinl 6, and two with another Insulation Resistance Tester 1
Electrode is connected, and the counterweight 7 that can be reduced contact resistance is also respectively provided on two copper sheets 4.
Particularly, the upper end, lower end of marshal piece 3 connect with the circular concave of upper plastic plate 5, lower plastic plate 5 respectively
Touching.
Particularly, fixed by four bolts 2 between upper plastic plate 5 and lower plastic plate 5.
Particularly, the upper end, lower end of marshal piece 3 are uniformly coated with conducting resinl 6.
Particularly, the weight of two counterweights 7, shape are all the same.
Using above-mentioned electric resistance measuring apparatus, the method for quickly detecting 8 moisture content of bituminous pavement, when with test temperature and immersion
Between under collective effect for the bituminous concrete moisture content test, comprising the following steps:
One, indoor measurement part
1, prepared by marshal piece
It is two-sided to hit real 75 moldings using 3 production method of marshal piece of standard, it is demoulded after cooling no less than 12h, then
Molding test specimen is put to drying box, quality is dried under the conditions of 35 ° and is no longer changed, taking-up is cooled to room temperature, is placed on drying
To be tested in device etc., the preparation of marshal piece 3 is completed.
2, it pre-processes
Before test, test specimen is weighed and is recorded, and the basic geometric data such as measure the diameter of each test specimen, thickness, will now matched
0.05%NaCl solution pour into closed container, so that test specimen is just submerged solution, closed container is put into constant temperature water tank, open water
Case switch, makes the temperature in water tank reach test temperature, covers tank lid.
3, water absorption
In order to reinforce electric conductivity, test specimen is put into 0.05%NaCl solution, adjusts temperature, timing measures test specimen water suction
Amount, to prevent moisture Influence of Evaporation, the standard specimen that is measured using the dry test specimen in face as water absorption.
4, determination of resistivity
Conducting resinl 6 is uniformly coated in the two sides of marshal piece 3, is connected to 1 electrode of Insulation Resistance Tester by copper sheet 4
Both ends, so as to carry out the measurement to 3 resistivity of marshal piece, measurement device is as shown in Figure 1.
Of poor quality using front and back according to obtained experimental data, the quality that can calculate test specimen in certain time increases, i.e.,
The value of test specimen water absorption rate；Using front and back resistance, the resistivity log ratio of test specimen in certain time, test specimen water absorption rate can be calculated
Corresponding test specimen resistivity log ratio, and then the moisture content of test specimen is obtained using the resistivity for measuring this test specimen.
After the available test specimen immersion of above laboratory test with soak before resistivity log ratio and both water absorption rates it
Between mapping table.
Two, the measurement of 8 moisture content of bituminous pavement
1, equipment is installed
It needs to be sticked on bituminous pavement 8 copper sheet 4 with conducting resinl 6, top adds the counterweight 7 of 5kg, Insulation Resistance Tester 1
The two poles of the earth connection copper sheet 4 measure, after connection as shown in Figure 2.
2, data acquire
Record before 8 one sections of 8 rainfalls of bituminous pavement of bituminous pavement with the resistivity after rainfall, obtain after rainfall with it is electric before rainfall
Resistance rate log ratio.
3, moisture content is calculated
According to laboratory test resistivity and moisture content mapping table, 8 resistivity log ratio of bituminous pavement corresponds to aqueous
Rate acquires the moisture content of bituminous pavement 8.
Conducting solution selects low concentration 0.05%NaCl solution or water, extraneous not by adjusting water temperature and soaking time simulation
Same environment temperature, different rainfall durations act on the influence to moisture diffusion, gradually make pitch by the diffusion of conducting solution or water
Concrete resistance reduces, and demarcates bituminous concrete resistance variation characteristic and water absorption rate relationship by laboratory test, is dripped by measurement
Resistance changing law before and after green pavement seepage speculates the moisture content of inside asphalt pavement, and final realize is changed by electrology characteristic
The quickly purpose of measurement bituminous concrete moisture content.
This measuring method improves the working efficiency of asphalt moisture content calibrating, while following the original of non-destructive testing
Then, the research of road pavement material Moisture Damage is of great significance, and the research of road pavement Moisture Damage plays very big booster action.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (5)
1. the quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content, which is characterized in that surveyed including indoor resistivity
Fixed part and field resistance rate measure part,
Indoor resistivity measures part, for measuring the marshal piece resistivity prepared, including marshal piece and insulation
Resistance meter, the marshal piece after immersion are fixed by fixture, fixture include all have circular concave upper plastic plate and
Lower plastic plate, upper end, the lower end of marshal piece are also connected by a copper sheet with two electrodes of Insulation Resistance Tester respectively
It connects；
Field resistance rate measures part, for measuring bituminous pavement resistivity, including bituminous pavement and Insulation Resistance Tester, two
A copper sheet passes through conduction and is adhesive on bituminous pavement, and is connected with two electrodes of another Insulation Resistance Tester,
The counterweight that can be reduced contact resistance is also respectively provided on two copper sheets.
2. the electric resistance measuring apparatus of quickly detection asphalt pavement material moisture content as described in claim 1, which is characterized in that
Upper end, the lower end of the marshal piece are in contact with the circular concave of upper plastic plate, lower plastic plate respectively.
3. the electric resistance measuring apparatus of quickly detection asphalt pavement material moisture content as described in claim 1, which is characterized in that
It is fixed between the upper plastic plate and lower plastic plate by multiple bolts.
4. the electric resistance measuring apparatus of quickly detection asphalt pavement material moisture content as claimed in claim 2, which is characterized in that
Upper end, the lower end of the marshal piece are uniformly coated with conducting resinl.
5. the electric resistance measuring apparatus of quickly detection asphalt pavement material moisture content as described in claim 1, which is characterized in that
Weight, the shape of two counterweights are all the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994146.2U CN209182277U (en) | 2018-11-30 | 2018-11-30 | The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821994146.2U CN209182277U (en) | 2018-11-30 | 2018-11-30 | The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209182277U true CN209182277U (en) | 2019-07-30 |
Family
ID=67375045
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821994146.2U Expired - Fee Related CN209182277U (en) | 2018-11-30 | 2018-11-30 | The quickly electric resistance measuring apparatus of detection asphalt pavement material moisture content |
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| CN (1) | CN209182277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067491A (en) * | 2020-08-10 | 2020-12-11 | 滁州职业技术学院 | Test device and method for quantitatively measuring blockage state of pervious concrete pavement |
| CN114166891A (en) * | 2021-12-07 | 2022-03-11 | 武汉理工大学 | Electric performance based cold-mixing cold-paving asphalt mixture rolling time determination device and method |
-
2018
- 2018-11-30 CN CN201821994146.2U patent/CN209182277U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067491A (en) * | 2020-08-10 | 2020-12-11 | 滁州职业技术学院 | Test device and method for quantitatively measuring blockage state of pervious concrete pavement |
| CN114166891A (en) * | 2021-12-07 | 2022-03-11 | 武汉理工大学 | Electric performance based cold-mixing cold-paving asphalt mixture rolling time determination device and method |
| CN114166891B (en) * | 2021-12-07 | 2024-02-20 | 武汉理工大学 | Cold-mixing and cold-paving asphalt mixture rolling time determining device and method based on electrical properties |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 Termination date: 20201130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |