CN114428053A - Device and method for detecting anti-stripping capability of pavement anti-skid thin-layer aggregate - Google Patents
Device and method for detecting anti-stripping capability of pavement anti-skid thin-layer aggregate Download PDFInfo
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- CN114428053A CN114428053A CN202111645075.1A CN202111645075A CN114428053A CN 114428053 A CN114428053 A CN 114428053A CN 202111645075 A CN202111645075 A CN 202111645075A CN 114428053 A CN114428053 A CN 114428053A
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- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention relates to a pavement anti-skid thin layer aggregate anti-stripping capability detection device, which comprises: the bracket is supported on the anti-skid thin layer of the pavement; a rotating rod rotatably mounted on the bracket; the weight is connected to the end part of the rotating rod; the measuring tool is arranged on the anti-skid thin layer of the pavement, is clamped at the bottom of the support and is provided with an inclined load bearing plate corresponding to the heavy hammer; the heavy hammer impacts the load bearing plate along with the rotation of the rotating rod, and then the measuring tool applies load to the pavement to realize the detection of the anti-stripping capability of the anti-skid thin-layer aggregate of the pavement. The invention can truly simulate the vehicle load, and check the stripping condition of the aggregate after applying a certain load, thereby evaluating the stripping resistance of the pavement anti-skid thin-layer aggregate.
Description
Technical Field
The invention relates to the field of road engineering, in particular to a device and a method for detecting the anti-stripping capability of a thin anti-skid layer aggregate on a pavement.
Background
The skid resistance of the pavement is an important index for representing the safety performance of the pavement. In order to improve the anti-skid performance of the pavement, pavement anti-skid thin-layer technologies such as a sintered bauxite high-anti-skid pavement structure (application number 202121758544.6) and the like are provided, so that the anti-skid performance of the pavement of the old pavement can be greatly improved (especially under the wet and slippery condition of the pavement in rainy days), and the application effect is good. However, the aggregate may be peeled off from the binder after the thin road skid resistant layer is subjected to repeated vehicle loads during service, thereby reducing the skid resistance of the thin road skid resistant layer and shortening the service life of the thin road skid resistant layer. Scientifically detecting and evaluating the anti-stripping capability of the aggregate is an important prerequisite for effectively controlling the construction quality of the anti-skid thin layer of the pavement. Therefore, a scheme capable of detecting the anti-stripping capability of the anti-skid thin layer aggregate of the pavement is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a device and a method for detecting the anti-stripping capability of a pavement anti-skid thin-layer aggregate, and solves the blank problem of the prior art.
The technical scheme for realizing the purpose is as follows:
the invention provides a pavement anti-skid thin layer aggregate anti-stripping capability detection device, which comprises:
the bracket is supported on the anti-skid thin layer of the pavement;
a rotating rod rotatably mounted on the bracket;
the heavy hammer is connected to the end part of the rotating rod; and
the measuring tool is arranged on the anti-skid thin layer of the pavement, is clamped at the bottom of the support and is provided with an inclined load bearing plate corresponding to the heavy hammer;
the heavy hammer impacts the load bearing plate along with the rotation of the rotating rod, and then the measuring tool applies load to the pavement so as to realize the detection of the anti-stripping capability of the anti-skid thin-layer aggregate of the pavement.
The detection device can detect the anti-stripping capability of the anti-skid thin layer of the pavement, when in detection, the detection device is placed on the anti-skid thin layer of the pavement, the load is applied to the load bearing plate through the heavy hammer, and then the load bearing plate transmits the load to the anti-skid thin layer of the pavement, so as to realize real simulation of vehicle load, and after a certain load is applied, the stripping condition of the aggregate is checked, so that the anti-stripping capability of the aggregate of the anti-skid thin layer of the pavement is evaluated.
The pavement anti-skid thin layer aggregate anti-stripping capability detection device is further improved in that the measuring tool further comprises a bottom plate arranged on the pavement anti-skid thin layer and an adjusting mechanism for supporting and connecting the bottom plate and the load bearing plate;
the end part of the loading plate is rotatably arranged on the bottom plate;
the inclination angle of the loading plate can be adjusted through the adjusting mechanism.
The pavement anti-skid thin-layer aggregate anti-stripping capability detection device is further improved in that the adjusting mechanism comprises an adjusting screw rod rotatably erected on the bottom plate, an adjusting sleeve in threaded connection with the adjusting screw rod, a first supporting rod with one end rotatably connected to the adjusting sleeve and the other end rotatably connected to the load bearing plate, and a second supporting rod with one end rotatably connected to the bottom plate and the other end rotatably connected to the load bearing plate;
the first supporting rod and the second supporting rod are inclined;
the adjusting sleeve can move up and down along the adjusting screw rod by rotating the adjusting screw rod, so that the first supporting rod pushes or pulls the load bearing plate to adjust the inclination angle of the load bearing plate.
The pavement anti-skid thin-layer aggregate anti-stripping capability detection device is further improved in that a rubber pad is fixedly arranged on the bottom surface of the bottom plate, and the bottom surface of the rubber pad is an uneven texture surface.
The pavement anti-skid thin-layer aggregate anti-stripping capability detection device is further improved in that a limiting block is arranged at the bottom of the support corresponding to the side part of the measuring tool, and the limiting block is arranged on the side part corresponding to the measuring tool in a pressing mode.
The pavement anti-skid thin-layer aggregate anti-stripping capability detection device is further improved in that the support comprises a pair of bases arranged oppositely, side plates vertically arranged on the bases and a rotating shaft rotatably arranged between the side plates;
the rotating rod is fixedly connected with the rotating shaft;
the measuring tool is arranged between the pair of bases.
The invention also provides a method for detecting by using the device for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate, which comprises the following steps:
the support is arranged on the road surface anti-skid thin layer to be detected in a supporting mode, the measuring tool is clamped at the bottom of the support and is arranged on the road surface anti-skid thin layer to be detected;
lifting and releasing the heavy hammer upwards to enable the heavy hammer to fall freely along with the rotation of the rotating rod and impact the load bearing plate, so that one-time loading is completed;
repeatedly loading until the load requirement of the anti-skid thin layer of the pavement to be tested is met; and
the inspection is completed by removing the inspection device and checking the peeling of the aggregate.
The method of the invention is further improved in that the method further comprises the following steps:
collecting loose aggregates on the anti-skid thin layer of the pavement, and carrying out quality measurement on the collected loose aggregates;
the peel resistance index was calculated using the following formula:
in the formula, γ is an anti-peeling index, m is the mass of the loose aggregate, ρ is the density of the loose aggregate, a is the length of the detection region, and b is the width of the detection region.
A further improvement of the method of the present invention is that,
before loading, the inclination angle of the loading plate is adjusted to increase the horizontal force applied to the anti-skid thin layer of the pavement.
The method according to the invention is further improved in that the surface of the anti-skid film of the road surface is cleaned of dust and particles in the detection area before the detection device is mounted.
Drawings
FIG. 1 is a front view of the device for detecting the anti-stripping capability of the anti-skid thin layer aggregate of the pavement of the invention.
FIG. 2 is a side view of the anti-stripping capability detection device for thin anti-skid layer aggregate on a pavement.
FIG. 3 is a front view of the measuring device of the anti-stripping capability detection device for thin anti-skid layer aggregate on the pavement of the present invention.
FIG. 4 is a side view of a measuring tool in the detection device for anti-stripping capability of aggregate of the anti-skid thin layer of the pavement of the invention.
FIG. 5 is a flowchart of a method for detecting the anti-stripping capability of the thin anti-skid layer aggregate of the pavement according to the device for detecting the anti-stripping capability of the aggregate of the pavement.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a device and a method for detecting the anti-stripping capability of a pavement anti-skid thin-layer aggregate, which are used for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate, and scientifically detecting and evaluating the anti-stripping capability of the aggregate, so that the construction quality of the pavement anti-skid thin layer can be effectively controlled. The detection device has the characteristics of simple structure, convenience in operation, portability and the like, and can accurately detect the anti-stripping capability of the aggregate. The following describes the device and method for detecting the anti-stripping capability of the thin anti-skid layer aggregate on the pavement according to the invention with reference to the accompanying drawings.
Referring to fig. 1, a front view of the device for detecting the anti-stripping capability of the thin anti-skid layer aggregate of the pavement of the invention is shown. Referring to fig. 2, a side view of the device for detecting the anti-stripping capability of the anti-skid thin layer aggregate of the pavement of the invention is shown. The following describes the device for detecting the anti-stripping capability of the thin anti-skid layer aggregate on the pavement according to the present invention with reference to fig. 1 and 2.
As shown in fig. 1 and fig. 2, the device for detecting the anti-spalling capability of aggregate in a thin anti-skid layer of a pavement of the invention comprises a bracket 21, a rotating rod 22, a weight 23 and a measuring tool 24, wherein the bracket 21 is arranged on the thin anti-skid layer of the pavement; the rotating rod 22 is rotatably arranged on the bracket 21; the weight 23 is connected to the end of the rotating rod 22; the measuring tool 24 is arranged on the anti-skid thin layer of the road surface, the measuring tool 24 is clamped at the bottom of the bracket 21, and the measuring tool 24 is provided with an inclined load bearing plate 241 corresponding to the heavy hammer 23; the weight 23 impacts the load bearing plate 241 along with the rotation of the rotating rod 22, and the measuring tool 24 applies a load to the pavement to realize the anti-stripping capability of the anti-skid thin-layer aggregate on the pavement.
The measuring tool 24 is placed on the anti-skid thin layer of the pavement and is in contact with the aggregate of the anti-skid thin layer of the pavement, and further when the heavy hammer 23 hammers the load bearing plate 241 of the measuring tool 24, the measuring tool 24 can apply load on the aggregate, so that the load can be applied to the aggregate, the effect of vehicle load on the pavement can be truly simulated, and after the load is applied for a certain number of times, the stripping condition of the aggregate is checked, so that the anti-stripping capability of the aggregate of the anti-skid thin layer of the pavement is evaluated.
In one embodiment of the present invention, as shown in fig. 3 and 4, the measuring tool 24 further includes a bottom plate 242 disposed on the anti-skid thin layer of the road surface and an adjusting mechanism 244 for supporting and connecting the bottom plate 242 and the load bearing plate 241;
the end of the loading plate 241 is rotatably mounted on the bottom plate 242;
the inclination angle of the loading plate 241 can be adjusted by the adjusting mechanism 244.
The adjustment of the vertical force and the horizontal force applied by the measuring tool 24 to the pavement anti-skid thin-layer aggregate is realized by adjusting the inclination angle of the load bearing plate 241.
Further, the adjusting mechanism 244 comprises an adjusting screw 2441 rotatably erected on the bottom plate 242, an adjusting sleeve 2442 screwed on the adjusting screw 2441, a first supporting rod 2443 with one end rotatably connected to the adjusting sleeve 2442 and the other end rotatably connected to the load receiving plate 241, and a second supporting rod 2444 with one end rotatably connected to the bottom plate 242 and the other end rotatably connected to the load receiving plate 241;
the first strut 2443 and the second strut 2444 are both inclined;
the adjusting sleeve 2442 can move up and down along the adjusting screw 2441 by rotating the adjusting screw 2441, so that the first supporting rod 2443 pushes or pulls the load bearing plate 241 to adjust the inclination angle of the load bearing plate 241.
When the adjusting screw rod 2441 is rotated to enable the adjusting sleeve 2442 to move upwards, the first supporting rod 2443 pulls the loading plate 241, so that an included angle between the loading plate 241 and the bottom plate 242 is reduced, and when the adjusting screw rod 2441 is rotated reversely, the adjusting sleeve 2442 moves downwards, and the first supporting rod 2443 pushes the loading plate 241, so that the included angle between the loading plate 241 and the bottom plate 242 is increased. The inclination angle of the loading plate 241 is adjusted in a range of 30 ° to 60 °.
Preferably, the bottom of the load receiving plate 241 is rotatably connected to the bottom plate 241 by a rotating shaft.
A connecting cylinder is arranged on the bottom plate 241 corresponding to the adjusting screw 2441, the bottom of the adjusting screw 2441 is inserted into the connecting cylinder, and the adjusting screw 2442 can rotate freely in the connecting cylinder.
In the first step, a rubber pad 243 is fixedly disposed on the bottom surface of the bottom plate 242, and the bottom surface of the rubber pad 243 is an uneven texture surface. The textured surface can increase the coefficient of friction between the rubber mat 243 and the aggregate.
In an embodiment of the present invention, as shown in fig. 1, the bottom of the bracket 1 is provided with a limit block 214 corresponding to the side of the measuring tool 24, and the limit block 214 is pressed on the side corresponding to the measuring tool 24.
Preferably, the surface of the limit block 214 contacting the measuring tool 24 is an inclined surface, and the limit block 214 presses the measuring tool 24 to limit the displacement of the measuring tool 24. When the weight 23 impacts the measuring tool 24, the measuring tool 24 will displace a certain amount, but due to the limit of the limiting block 214, the displacement of the measuring tool 24 is not large, when the measuring tool 24 displaces, the measuring tool 24 can also transmit the load to the aggregate, and the transmitted load can simulate the real vehicle load.
In one embodiment of the present invention, as shown in fig. 1 and 2, the bracket 21 includes a pair of bases 211 disposed opposite to each other, side plates 212 standing on the bases 211, and a rotating shaft 213 rotatably installed between the pair of side plates 212;
the rotating rod 22 is fixedly connected with the rotating shaft 213;
the measuring tool 24 is disposed between the pair of bases 211.
Preferably, the stop block 214 is fixedly connected to the base 211.
Further, in order to improve the stability of the bracket 21, the pair of bases 211 are connected together by a connecting plate to form an integral structure.
In one embodiment of the present invention, the weight 23 is connected to the rotating lever 22 in an inclined shape, so that the weight 23 can be surely in contact with the load receiving plate 241.
When detecting, on arranging detection device in the road surface cling compound thin layer that waits to detect, later lift the weight upwards and know that the dwang is the horizontality, then relieve the weight, let the weight free fall and strike the load-bearing board, realize carrying out the loading to the aggregate, load repeatedly to reaching the requirement, inspect the spalling condition of aggregate, so can obtain the anti spalling ability of road surface cling compound thin layer aggregate.
The invention also provides a method for detecting by using the device for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate, which is explained below.
As shown in fig. 5, the detection method of the present invention comprises the following steps:
step S11 is executed, the bracket is supported on the anti-skid thin layer of the road surface to be measured, the measuring tool is clamped at the bottom of the bracket and is arranged on the anti-skid thin layer of the road surface to be measured; then, step S12 is executed;
executing the step S13, lifting and releasing the weight, allowing the weight to freely fall and impact the load bearing plate along with the rotation of the rotating rod, thereby completing a loading; then, step S14 is executed;
step S14 is executed, and loading is repeated until the load requirement of the road surface anti-skid thin layer to be tested is met; then, step S15 is executed;
step S15 is executed to remove the detection device and check the peeling condition of the aggregates to complete the detection.
In one embodiment of the present invention, the method of the present invention further comprises:
collecting loose aggregates on the anti-skid thin layer of the pavement, and measuring the quality of the collected loose aggregates;
the peel resistance index was calculated using the following formula:
in the formula, γ is an anti-peeling index, m is the mass of the loose aggregate, ρ is the density of the loose aggregate, a is the length of the detection region, and b is the width of the detection region.
The larger the calculated anti-spalling index value is, the worse the anti-spalling ability of the aggregate is.
Preferably, the rubber mat has a size corresponding to the size of the detection area on the road surface.
In one embodiment of the invention, the angle of inclination of the load-bearing plate is adjusted to increase the horizontal force applied to the thin anti-skid layer of the road surface prior to loading.
Specifically, the inclination angle of the load bearing plate is adjusted according to the detection requirement, the loads applied to the aggregate are different correspondingly to different inclination angles, the adjustment can be carried out according to the detection requirement, and the corresponding loads are selected.
In one embodiment of the invention, the surface of the anti-skid layer of the road surface is cleaned of dust and particles in the detection area before the detection device is installed.
In a specific embodiment of the invention, the anti-skid thin layer of the pavement has limited bearing capacity and has corresponding limit load, when the aggregate is loaded, the loading times are calculated according to the limit load and the load applied once, and then the step S13 is repeated to load the pavement until the loading times reach the requirement and then the loading is finished.
In one embodiment of the invention, a vacuum cleaner is used to collect all loose aggregate in the inspection area as it is collected.
The device for detecting the anti-stripping capability of the pavement anti-skid thin layer aggregate provides a powerful detection means for controlling the construction quality of the pavement anti-skid thin layer, makes up for the technical blank, contributes to cost reduction and efficiency improvement of projects, and has higher achievement conversion value.
The device for detecting the anti-stripping capability of the pavement anti-skid thin layer aggregate is suitable for controlling the construction quality of the pavement anti-skid thin layer.
The pavement anti-skid thin-layer aggregate anti-stripping capability detection device can accurately detect the anti-stripping capability of aggregates, and has the characteristics of simple structure, convenience in operation, convenience in carrying and the like, and the technical effect is remarkable.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a road surface cling compound thin layer aggregate anti-stripping ability detection device which characterized in that includes:
the bracket is arranged on the anti-skid thin layer of the pavement;
a rotating rod rotatably mounted on the bracket;
the weight is connected to the end part of the rotating rod; and
the measuring tool is arranged on the anti-skid thin layer of the pavement, is clamped at the bottom of the support and is provided with an inclined load bearing plate corresponding to the heavy hammer;
the heavy hammer impacts the load bearing plate along with the rotation of the rotating rod, and then the measuring tool applies load to the pavement to realize the detection of the anti-stripping capability of the anti-skid thin-layer aggregate of the pavement.
2. The device for detecting the anti-stripping capability of the aggregate of the pavement anti-skid thin layer as claimed in claim 1, wherein the measuring tool further comprises a bottom plate arranged on the pavement anti-skid thin layer and an adjusting mechanism for supporting and connecting the bottom plate and the load bearing plate;
the end part of the loading plate is rotatably arranged on the bottom plate;
the inclination angle of the loading plate can be adjusted through the adjusting mechanism.
3. The device for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate according to claim 2, wherein the adjusting mechanism comprises an adjusting screw rod which is rotatably erected on the bottom plate, an adjusting sleeve which is in threaded connection with the adjusting screw rod, a first support rod which is connected with the adjusting sleeve in a rotatable manner at one end and is connected with the load bearing plate in a rotatable manner at the other end, and a second support rod which is connected with the load bearing plate in a rotatable manner at one end and is connected with the bottom plate at the other end;
the first supporting rod and the second supporting rod are inclined;
the adjusting sleeve can move up and down along the adjusting screw rod by rotating the adjusting screw rod, so that the first supporting rod pushes or pulls the load bearing plate to adjust the inclination angle of the load bearing plate.
4. The device for detecting the anti-stripping capability of the thin anti-skid layer aggregate on the road surface as claimed in claim 2, wherein a rubber pad is fixedly arranged on the bottom surface of the bottom plate, and the bottom surface of the rubber pad is an uneven texture surface.
5. The device for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate according to claim 1, wherein a limiting block is arranged at the bottom of the bracket corresponding to the side part of the measuring tool, and the limiting block is pressed on the side part corresponding to the measuring tool.
6. The device for detecting the anti-stripping capability of the thin-layer aggregate with skid resistance for the pavement according to claim 1, wherein the bracket comprises a pair of bases arranged oppositely, side plates vertically arranged on the bases and a rotating shaft rotatably arranged between the pair of side plates;
the rotating rod is fixedly connected with the rotating shaft;
the measuring tool is arranged between the pair of bases.
7. The method for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate by using the device for detecting the anti-stripping capability of the pavement anti-skid thin-layer aggregate according to claim 1 is characterized by comprising the following steps of:
the support is arranged on the road surface anti-skid thin layer to be detected in a supporting mode, the measuring tool is clamped at the bottom of the support and is arranged on the road surface anti-skid thin layer to be detected;
lifting and releasing the heavy hammer upwards to enable the heavy hammer to fall freely along with the rotation of the rotating rod and impact the load bearing plate, so that one-time loading is completed;
repeatedly loading until the load requirement of the anti-skid thin layer of the pavement to be tested is met; and
the inspection is completed by removing the inspection device and checking the peeling of the aggregate.
8. The method of claim 7, further comprising:
collecting loose aggregates on the anti-skid thin layer of the pavement, and carrying out quality measurement on the collected loose aggregates;
the peel resistance index was calculated using the following formula:
in the formula, γ is an anti-peeling index, m is the mass of the loose aggregate, ρ is the density of the loose aggregate, a is the length of the detection region, and b is the width of the detection region.
9. The method of claim 7,
before loading, the inclination angle of the loading plate is adjusted to increase the horizontal force applied to the anti-skid thin layer of the pavement.
10. A method as claimed in claim 7, characterized in that the surface of the anti-skid film of the road surface is cleaned of dust and particles in the inspection area before the inspection device is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645075.1A CN114428053A (en) | 2021-12-30 | 2021-12-30 | Device and method for detecting anti-stripping capability of pavement anti-skid thin-layer aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645075.1A CN114428053A (en) | 2021-12-30 | 2021-12-30 | Device and method for detecting anti-stripping capability of pavement anti-skid thin-layer aggregate |
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| CN114428053A true CN114428053A (en) | 2022-05-03 |
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| CN202111645075.1A Pending CN114428053A (en) | 2021-12-30 | 2021-12-30 | Device and method for detecting anti-stripping capability of pavement anti-skid thin-layer aggregate |
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| CN201867346U (en) * | 2010-07-23 | 2011-06-15 | 武汉理工大学 | Simulation test device for loosening and grain falling of anti-skid overlay material on road surface |
| CN102141506A (en) * | 2010-12-30 | 2011-08-03 | 长安大学 | Anti-stripping test device for surface aggregates of porous pavements |
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| CN111189604A (en) * | 2020-02-25 | 2020-05-22 | 四川大学 | Building model loading device |
| CN211905043U (en) * | 2020-02-25 | 2020-11-10 | 江苏徐工工程机械研究院有限公司 | Anti-stripping performance testing arrangement of coating |
| CN113235312A (en) * | 2021-04-12 | 2021-08-10 | 重庆交通大学 | Prefabricated pavement anti-slip plaster and preparation method and use method thereof |
| CN214573352U (en) * | 2020-11-24 | 2021-11-02 | 中国建筑第八工程局有限公司 | Supporting device for bridge template |
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2021
- 2021-12-30 CN CN202111645075.1A patent/CN114428053A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201867346U (en) * | 2010-07-23 | 2011-06-15 | 武汉理工大学 | Simulation test device for loosening and grain falling of anti-skid overlay material on road surface |
| CN102141506A (en) * | 2010-12-30 | 2011-08-03 | 长安大学 | Anti-stripping test device for surface aggregates of porous pavements |
| CN105973748A (en) * | 2016-06-08 | 2016-09-28 | 山西省交通科学研究院 | Bituminous mixture antistrip performance testing device |
| CN111189604A (en) * | 2020-02-25 | 2020-05-22 | 四川大学 | Building model loading device |
| CN211905043U (en) * | 2020-02-25 | 2020-11-10 | 江苏徐工工程机械研究院有限公司 | Anti-stripping performance testing arrangement of coating |
| CN214573352U (en) * | 2020-11-24 | 2021-11-02 | 中国建筑第八工程局有限公司 | Supporting device for bridge template |
| CN113235312A (en) * | 2021-04-12 | 2021-08-10 | 重庆交通大学 | Prefabricated pavement anti-slip plaster and preparation method and use method thereof |
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