CN108490162B - Pavement safety performance testing method and system - Google Patents
Pavement safety performance testing method and system Download PDFInfo
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- CN108490162B CN108490162B CN201810244998.8A CN201810244998A CN108490162B CN 108490162 B CN108490162 B CN 108490162B CN 201810244998 A CN201810244998 A CN 201810244998A CN 108490162 B CN108490162 B CN 108490162B
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Abstract
The invention provides a pavement safety performance testing method, which comprises the following steps: detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide; detecting the surface retroreflection coefficient of the asphalt mixture rut test piece doped with the nano titanium dioxide; detecting the color difference between the surface of the asphalt mixture rutting test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rutting test piece not doped with the nano titanium dioxide; and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflecting coefficient and the color difference and a preset safety performance contrast relation. The invention also provides a road surface safety performance testing system. The invention is beneficial to improving the road driving safety, improving the sustainable use performance of the novel building material and reducing the light pollution of the building material to the environment.
Description
Technical Field
The application relates to the field of road safety, in particular to a method and a system for testing safety performance of a road surface.
Background
In the current "highway project safety evaluation standard" (JTG B05-2015), the anti-skid capability of the surface performance of the pavement needs to be evaluated in the design stage, the cross-working stage and the post-evaluation stage of the highway project construction drawing to ensure the driving safety of the pavement. In actual engineering implementation, relevant departments and units measure the anti-skid capacity of the road surface according to the regulation of the standard, and accordingly, the driving safety of the road surface is evaluated.
When the vehicle runs on the road surface, the vehicle tire directly generates a relative acting force with the road surface. This force plays a role in three aspects from the safety point of view, namely, firstly, providing enough driving force to enable the vehicle to run according to the control intention of the driver; secondly, braking force is provided, and the vehicle is stopped within a safe distance under the condition of need or emergency; in addition, the brake also provides lateral friction resistance to prevent the vehicle from sideslipping when running at high speed or in emergency braking. The three forces are at the same, opposite and perpendicular angles to the direction of travel of the vehicle in the horizontal plane, and are all generated by the active relative movement of the tires against the ground by the driver manipulating the drive, brake and steering system of the vehicle. According to the safety guarantee efficiency provided by the acting force between the tire and the road surface for driving, the road surface is generally expected to have higher frictional resistance, namely higher road surface antiskid performance.
A basic safety condition of high-speed driving is the smoothness and integrity of a road surface, and after the highway is driven to run, due to the long-term repeated action of load and environmental climate, the structure and strength of a roadbed and road surface material change, so that various diseases such as rutting, sinking, plate breaking, slab staggering, oil spill and the like of the road surface are generated. These diseases can all make the road surface roughness descend, will cause the potential safety hazard to high-speed driving, for example the bituminous paving rut can make driving wheel track position produce ponding, and subside, pot hole and wrong platform can cause the jump car even direction out of control, and the oil spilling, ice and snow or other pollutions can reduce road surface coefficient of friction etc.. Therefore, the inspection and treatment of the diseases on the operation road are not only required for maintenance of the highway management department, but also guarantee for public to use the road safely. The index is currently detected when the technical condition of the road is evaluated, and is also detected when the driving safety of the road is evaluated.
When a driver drives a vehicle on a road surface for a long time, the eyes of the driver have physiological light intensity or fatigue tolerance limit to the road surface reflection, and when the driver approaches or exceeds a certain standard, the driver generates misoperation phenomenon due to physiological reaction to cause traffic accidents, so that the optical characteristics of road materials and the road surface reflection characteristics after long-term rolling and polishing need to be researched, a comfortable external driving environment is provided for the driver, and the driving safety is further ensured.
The above-mentioned properties or indexes of road surfaces have been studied for a long time in many countries developed in europe and america, and because of the safety problems involved in human beings, many countries have made very strict and detailed regulations and technical standards, and have adopted many advanced technologies and equipments of high-tech automation to detect and evaluate the safety properties of road surfaces. The united kingdom is a typical representative thereof, and from the 20 s onward, the anti-skid problem of road surfaces was studied, and first, an evaluation mode of road traffic accidents was proposed, and the united kingdom has made detailed and well-established anti-skid standards for town roads and highways according to road traffic flow and vehicle speed (or road grade) to date.
In addition, equipment such as pendants, SCRIM transverse force coefficient test vehicles, M1TInder friction coefficient test instruments, laser structure depth instruments and the like, which were originally developed and developed in the uk, are not only used in the uk for periodically testing the skid resistance of road networks, but also in many countries around the world, the test result parameters of these equipment are specified as the engineering technical standards thereof. In addition, countries such as the united states, sweden, japan, and the like have been studied for years to develop special anti-skid properties for road or airport runway surfaces, and these countries have developed friction coefficient testing devices having respective unique technical features.
The road surface safety technology in China is started from anti-skid research in the 80 s of the 20 th century, and anti-skid indexes which are originally introduced into the road industry are a friction coefficient tested by a pendulum instrument and a construction depth tested by a sand laying instrument. With the large-scale arrangement of high-grade roads in China and the continuous improvement of actual average speed, the requirement on the driving safety performance of the roads is also continuously improved. Therefore, many units develop research subjects of road surface safety performance from the 90 s of the 20 th century in China, for example, through research results of British transverse force coefficient test vehicle SCRIM introduced to world loan, the transverse force coefficient SFC becomes one of main technical indexes for testing and evaluating the anti-skid performance of the highway road surface in China; and as another example, through research on the micro and macro structures of the materials, the technical standards of the grinding value PSV and the construction depth TD of the coarse aggregate used by the high-grade highway are established. In addition, the open-graded asphalt mixture type special for skid resistance is recommended in the road surface design specifications of China. In recent years, in order to meet the requirements of continuous, quick and safe large-scale engineering quality assessment and operation maintenance evaluation detection of high-grade roads, friction coefficient and construction depth test equipment with various principles is introduced domestically. Meanwhile, corresponding domestic equipment is developed at home, and a large amount of high-tech automatic detection equipment is put into practical production and management work.
In summary, China has already established a set of road surface antiskid safety technology index system, and the safety driving of the road surface is guaranteed from a plurality of links such as design parameters, construction control, quality, maintenance condition evaluation, etc., but at present, the influence of problems such as road surface glare on the safety driving is not researched by a scientific system, and further comprehensive research needs to be developed.
The good vision condition of a vehicle driver is effective guarantee of safe driving, and the road color and brightness are important factors directly stimulating the visual sense of people. At present, the higher-grade roads are mainly two types of asphalt pavements and cement pavements, and the two types of pavements are sometimes colloquially called black pavements and white pavements. From the human physiology perspective, white pavements are more prone to human vision to produce high intensity stimulation and fatigue effects, which can be evidenced by the driver's perception of long-term travel on cement pavements under intense sun exposure. In the current researches on the surface characteristics of black and white road surfaces in all countries of the world, the optical performance of the road surface has little influence on the driving safety, mainly because the phenomenon needs to be taken as a safety problem under certain environmental conditions. The reports published by the working group of optical properties of roads under the international association of roads (PIACE) and the international commission on illumination (CIE) show that early studies on optical properties of road surfaces focused only on the illumination conditions of roads, and although they noticed the influence of the color and glare of road surfaces on drivers, no further studies were carried out. With the improvement of road conditions and vehicle speed, the influence degree of road surface optical characteristics is enhanced, and under the condition of strong light and on the road section with large change of road surface color and brightness, the traffic safety as a whole has potential danger.
From the perspective of visual comfort of people, 1) the road color is preferably kept as same as the color and softness, so that uniform materials are selected when the road is paved, and the color of the maintenance repair area is kept to be coordinated with the color of the surrounding road surface as much as possible. If the color contrast changes violently frequently in long distance road sections, the visual tension of the driver is inevitably caused. 2) In view of physiological fatigue resistance, the materials for pavement construction are dark color systems, and a large amount of whitish and stones with crystal reflecting cleavage planes are avoided as much as possible. Particularly in areas with strong sunlight, the white road surface is easy to cause the phenomenon of visual fatigue of drivers. 3) Anti-glare: one of the most important optical properties of a pavement is surface reflection, or glare. Glare is a phenomenon that is generally caused by a road surface material which is polished over a long period of time by a wheel or generates oil when irradiated with a lamp or sunlight at a certain angle, and it strongly stimulates the visual nerve of a driver (shown in fig. 2). When the road surface has obvious reflection phenomenon, the measures generally adopted are to mechanically roughen the road surface and increase the roughness of the surface.
When light rays strike the interface of two media, a part of the light rays change the propagation direction and return to the original medium to continue to propagate, the phenomenon is called light reflection, and the reflection of the light follows the reflection law. In nature, there are three reflection phenomena of diffuse reflection, specular reflection and retro reflection.
Diffuse reflection of light is one of the most common forms of reflection. Diffuse reflection occurs from reflection caused by light rays impinging on any rough surface. These rough surfaces cause incident light rays to diverge in various directions, and only a small portion of the light rays can be reflected back toward the source. The diffuse reflective material provides little visibility to the human eye. When driving at night, if the driver does not use the assistance of other light sources, the main way for the driver to observe objects on the road is that a small part of light rays can return to the eyes of the driver in the diffuse reflection caused by the irradiation of the vehicle lamp. Fig. 1 is a schematic view of the principle of diffuse reflection of light.
Specular reflection of light occurs when light is incident on a very smooth or shiny surface. The angle of reflection of the light on the surface of the object is the same as the angle of incidence, but the directions are opposite. If the surface of the object is at a precise right angle to the light source, the reflected light will be reflected back completely into the direction of the light source. This specular reflection phenomenon may occur on some diffuse reflection objects, such as a road surface covered with rainwater or ice. For a driver, light rays formed by a remote street lamp and an opposite automobile headlamp are not diffused reflection but mirror reflection on a road surface covered by rainwater or ice, and the light rays can be emitted into eyes of the driver, so that the driver can drive in the rain or on an icy road surface in winter, and the driver must pay attention to wearing polarized sunglasses for prevention. Fig. 2 is a schematic diagram of the principle of specular reflection of light.
Retroreflection of light refers to the reflection of a reflected ray from a direction opposite to that of the incident ray back toward the light source. Retro-reflection is also known as Retro-reflection, directional reflection or Retro-reflection, the concept originally in english and originally written Retro-reflection, and can also be written as Retro-reflection. This word consists of two parts, retror means backward and Reflect means reflectance. Retro-reflection here refers to the phenomenon where light rays strike a surface and are reflected back to the light source. The retroreflectivity of an object, or how reflective the object is, depends on the intensity of the incident light and the material composition of the object. Fig. 3 is a schematic view of the principle of retroreflection of light.
The safety performance test of the existing asphalt pavement material tests the skid resistance coefficient value of the pavement in both a laboratory and a field, but the pavement material has no influence on the optical performance of a road surface, and the optical performance test is not carried out.
Disclosure of Invention
In order to solve one of the above technical problems, the present invention provides a method for testing safety performance of a road surface, the method being applied to an indoor environment, the method comprising:
manufacturing an indoor rutting test piece, wherein the rutting test piece contains an asphalt mixture doped with nano titanium dioxide;
detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
detecting the surface retroreflection coefficient of the asphalt mixture rut test piece doped with the nano titanium dioxide;
detecting the color difference between the surface of the asphalt mixture rutting test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rutting test piece not doped with the nano titanium dioxide;
and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflecting coefficient and the color difference and a preset safety performance contrast relation.
Preferably, the process for manufacturing the indoor rut test piece comprises the following steps:
filling an asphalt mixture into a rutting mold, and flattening and compacting the asphalt mixture;
and spraying the nano titanium dioxide solution on the surface of the asphalt mixture which is flattened and compacted in a uniform and vaporous manner to form the asphalt mixture rut test piece doped with the nano titanium dioxide.
In order to solve one of the above technical problems, the present invention further provides a method for testing safety performance of a road surface, the method being applied to an outdoor environment, the method comprising:
detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
detecting the surface retroreflection coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
detecting the color difference between the surface of the asphalt mixture pavement doped with the nano titanium dioxide and the surface of the asphalt mixture pavement not doped with the nano titanium dioxide;
and determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflection coefficient and the color difference and a preset safety performance contrast relation.
In order to solve one of the above technical problems, the present invention further provides a road surface safety performance testing system, which is applied to an indoor environment, and comprises: the system comprises a track test piece, a pendulum type friction coefficient tester, a retro-reflection coefficient tester, a colorimeter and a processor, wherein the track test piece contains an asphalt mixture doped with nano titanium dioxide;
the pendulum type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
the color difference meter is used for detecting the color difference between the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rut test piece not doped with the nano titanium dioxide;
the processor is configured with operation instructions executable by the processor to perform the following operations: and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflecting coefficient and the color difference and a preset safety performance contrast relation.
In order to solve one of the above technical problems, the present invention further provides a road surface safety performance testing system, which is applied to an outdoor environment, and comprises: the device comprises a pendulum type friction coefficient tester, a retroreflection coefficient tester, a colorimeter and a processor;
the pendulum type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
the color difference meter is used for detecting the color difference between the asphalt mixture pavement doped with the nano titanium dioxide and the asphalt mixture pavement not doped with the nano titanium dioxide;
the processor is configured with operation instructions executable by the processor to perform the following operations: and determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflection coefficient and the color difference and a preset safety performance contrast relation.
The invention has the following beneficial effects: the invention provides a pavement safety performance detection method applied to an indoor environment and an outdoor environment respectively. In an indoor environment, firstly, the forming process of the rut test piece is improved, so that the rut test piece better meets the test requirement. At the same time, a comprehensive test system was established that included anti-sliding friction and optical properties. The method is favorable for improving the road driving safety, improving the sustainable use performance of the novel building material and reducing the light pollution of the building material to the environment. In addition, instruments required by the test system provided by the invention are the existing commonly used security check equipment, and the test system is low in price and easy to purchase. The detection cost of the road safety performance is hardly influenced. The process of determining the safety performance through the retroreflection coefficient and the chromatic aberration is simple and feasible, and the later-stage internal work workload cannot be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic illustration of diffuse reflection of light;
FIG. 2 is a schematic diagram of specular reflection of light;
FIG. 3 is a schematic representation of the retroreflection of light;
FIG. 4 is a flowchart of a road safety performance testing method applied to an indoor environment according to an embodiment of the present invention;
FIG. 5 is a flowchart of a method for manufacturing a rut test piece according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating the forming of a rut test piece according to an embodiment of the invention;
FIG. 7 is a schematic view of measuring point arrangement of a rut test piece according to an embodiment of the invention;
fig. 8 is a flowchart of a road safety performance testing method applied to an outdoor environment according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
As shown in fig. 4, the present embodiment proposes a road safety performance testing method, which is applied to an indoor environment, and includes:
s101, manufacturing an indoor rutting test piece, wherein the rutting test piece contains an asphalt mixture doped with nano titanium dioxide;
s102, detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
s103, detecting the surface retroreflection coefficient of the asphalt mixture rut test piece doped with the nano titanium dioxide;
s104, detecting the color difference between the surface of the asphalt mixture rutting test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rutting test piece not doped with the nano titanium dioxide;
and S105, determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflecting coefficient and the color difference and a preset safety performance contrast relation.
As shown in fig. 5, the process of manufacturing the indoor rut test piece includes:
s1011, filling an asphalt mixture into a rutting mold, and flattening and compacting the asphalt mixture;
and S1012, spraying the nano titanium dioxide solution on the surface of the flattened and compacted asphalt mixture in a uniform mist shape.
Finally forming the asphalt mixture rut test piece doped with the nano titanium dioxide through the process.
Specifically, in order to discuss the driving safety performance of the asphalt pavement material after the nano titanium dioxide is doped on the surface, the research randomly selects an asphalt mixture for the surface, the mixing proportion of raw materials (stones, sand, stone chips and mineral powder) is the same as that in the engineering, the nano titanium dioxide is doped in the mixture, and the asphalt mixture doped with the nano titanium dioxide is used for forming a rutting test piece in a laboratory. In the forming process, operations different from those in the existing specification are added, namely as shown in fig. 6: after the asphalt mixture is filled in the rutting mold, the rutting mold is flattened manually or mechanically and slightly compacted; then the nano titanium dioxide solution is sprayed on the surface of the preliminarily compacted mixture in a uniform mist shape. The amount of solution sprayed during this process is controlled to produce rut test pieces of different amounts for subsequent testing, as will be described in more detail later. The other forming processes are the same as those specified in the current test standards.
In the above, the whole process of forming the rutting test piece is introduced, in the rutting test piece forming process, a plurality of rutting test pieces with different mixing amounts can be manufactured, and in the following, taking five rutting test pieces with different mixing amounts as an example, nano-dioxide is respectively sprayed on the surfaces of five asphalt mixturesThe titanium content is 0, 1g/m2、2g/m2、3g/m2And 5g/m2. Then, measuring points are arranged on the rut test piece as shown in fig. 7, and a pendulum type friction coefficient tester is used for testing the surface anti-sliding friction coefficient of the time, an inverse reflection coefficient tester is used for testing the inverse reflection coefficient of the surface of the rut test piece, and a color difference meter is used for testing the color difference between the surface of the rut test piece with different mixing amounts and the surface of the rut test piece with no mixing amount. The test results are shown in tables 1 to 3, wherein table 1 is the indoor anti-sliding friction coefficient measurement result of the asphalt mixture of the nano titanium dioxide; table 2 white stimulation values of the surfaces of the asphalt mixture rut test pieces with different amounts of nano titanium dioxide; table 3 surface retroreflection coefficient values of asphalt mixture rut test pieces with different nano titanium dioxide doping amounts.
TABLE 1
TABLE 2
TABLE 3
The indoor photochemical characteristic judgment standard of the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide is as follows:
1. the anti-skid performance of the rut test piece is evaluated according to the relevant terms on the 'quality inspection and evaluation Standard for road engineering', 4 different nano Tio2The anti-skid performance of the rut test piece prepared from the mixed asphalt mixture meets the requirement.
2. And (3) evaluating color difference: comparison of different Nano Tio2Doped rut test piece, nano Tio2The larger the mixing amount is, the larger the average value of the white stimulation value is; for each rut test piece, the coefficient of variation of the surface color difference is less than 5%, which indicates that the surface color of each test piece is relatively uniform.
3. Evaluation of retroreflection coefficient: evaluating the retroreflection coefficient according to the limit regulation of the total uniformity of the road surface brightness (the total uniformity of the road surface brightness is the minimum brightness on the road surface/the average brightness on the road surface, the limit is not less than 0.4) in the current CJJ45-2015 urban road illumination design Standard, and evaluating different nano Tio2The total uniformity of the coefficient of retroreflection (the total uniformity of the coefficient of retroreflection of the pavement is the minimum coefficient of retroreflection on the pavement/the average coefficient of retroreflection on the pavement, the limit value is not less than 0.4) of the surface of the rut test piece mixed with the amount is more than 0.4.
The field proves the effect:
on-site paving of nano Tio2The mixing amount is 1g/m2The thickness of the asphalt pavement is about 150m, and when the safety is tested on site, a measuring point is selected according to JTG E60-2008 'on-site test regulation of road subgrade and pavement' requirements, and the assessment is carried out according to 'quality inspection and assessment standards of road engineering'. New laying nano Tio2The mixing amount is 1g/m2The anti-skid performance of the asphalt pavement meets the standard requirement.
Referring to a site measuring point selection method in GBT16311-2009 road traffic marking quality requirement and detection method, randomly selecting 10m long doped nano titanium dioxide with the quantity of 1g/m2The road section is uniformly provided with measuring points according to the rule that the distance between the measuring points is 1m, the width of the road section is 7m, the cross section is uniformly provided with 6 points, the longitudinal direction is respectively provided with 6 points, the distance between the points is also 1m, and 6 measuring points are arranged in total. The coefficient of retroreflection and color difference were measured at these test points, respectively. New laying nano Tio2The mixing amount is 1g/m2The total pavement uniformity of the asphalt pavement retroreflection coefficient is 1 (the total pavement retroreflection coefficient uniformity is the minimum retroreflection coefficient on the pavement/the average retroreflection coefficient on the pavement, and the limit value is not less than 0.4), and the standard requirement is met. The longitudinal uniformity on each lane central line of the road surface is 1 (the longitudinal uniformity of the retroreflection coefficient of the road surface is equal to the minimum retroreflection coefficient on each lane central line of the road surface/the average retroreflection coefficient on each lane central line of the road surface, the limit value is not less than 0.7), and the standard requirement is met.
Similarly, the color difference is respectively measured at 6 points by 6 points, the variation coefficient of 36 white stimulus values is less than 5 percent, and the new color difference is laidRice Tio2The mixing amount is 1g/m2The surface color difference of the asphalt pavement is uniform and has no obvious difference. And the adjacent part is not doped with nano Tio2Road surface color is comparable, and the color difference is negligible.
Example 2
As shown in fig. 8, the present embodiment proposes a road safety performance testing method, which is applied to an outdoor environment, and includes:
s201, detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
s202, detecting the surface retroreflection coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
s203, detecting the color difference between the surface of the asphalt mixture pavement doped with the nano titanium dioxide and the surface of the asphalt mixture pavement not doped with the nano titanium dioxide;
and S204, determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflection coefficient and the color difference and a preset safety performance contrast relation.
The method of this embodiment is performed in an outdoor environment, and therefore, compared with a process of performing a performance test in an indoor environment, a rut test piece does not need to be manufactured, and a test can be directly performed on a formed road surface, and a specific test process may refer to the process described in embodiment 1 and is not described herein again.
Example 3
This embodiment provides a road surface safety performance test system, the system is applied to indoor environment, the system includes: the system comprises a track test piece, a pendulum type friction coefficient tester, a retro-reflection coefficient tester, a colorimeter and a processor, wherein the track test piece contains an asphalt mixture doped with nano titanium dioxide;
the pendulum type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide;
the color difference meter is used for detecting the color difference between the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rut test piece not doped with the nano titanium dioxide;
the processor is configured with operation instructions executable by the processor to perform the following operations: and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflecting coefficient and the color difference and a preset safety performance contrast relation.
The equipment for manufacturing the rut test piece comprises a rut die, a flattening and compacting device and a spraying device;
the track mould is used for filling asphalt mixture;
the flattening and compacting device is used for flattening and compacting the asphalt mixture filled in the rut mould;
the spraying device is used for storing the nano titanium dioxide solution and uniformly and vaporifically spraying the titanium dioxide solution on the surface of the asphalt mixture which is flattened and compacted by the flattening and compacting device to form the asphalt mixture rut test piece doped with the nano titanium dioxide.
Specifically, in order to discuss the driving safety performance of the asphalt pavement material after the nano titanium dioxide is doped on the surface, the research randomly selects an asphalt mixture for the surface, the mixing proportion of raw materials (stones, sand, stone chips and mineral powder) is the same as that in the engineering, the nano titanium dioxide is doped in the mixture, and the asphalt mixture doped with the nano titanium dioxide is used for forming a rutting test piece in a laboratory. In the forming process, different operations from the existing specifications are added, and after the asphalt mixture is filled in the rutting die, the rutting die is manually or mechanically flattened and slightly compacted; then the nano titanium dioxide solution is sprayed on the surface of the preliminarily compacted mixture in a uniform mist shape. The amount of solution sprayed during this process is controlled to produce rut test pieces of different amounts for subsequent testing, as will be described in more detail later. The other forming processes are the same as those specified in the current test standards.
Example 4
This embodiment has proposed a road surface safety performance test system, the system is applied to outdoor environment, the system includes: the device comprises a pendulum type friction coefficient tester, a retroreflection coefficient tester, a colorimeter and a processor;
the pendulum type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the asphalt mixture pavement doped with the nano titanium dioxide;
the color difference meter is used for detecting the color difference between the asphalt mixture pavement doped with the nano titanium dioxide and the asphalt mixture pavement not doped with the nano titanium dioxide;
the processor is configured with operation instructions executable by the processor to perform the following operations: and determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the anti-sliding friction coefficient, the anti-reflection coefficient and the color difference and a preset safety performance contrast relation.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A road safety performance testing method is characterized in that the method is applied to an indoor environment, and comprises the following steps:
manufacturing an indoor rutting test piece, wherein the rutting test piece contains an asphalt mixture doped with nano titanium dioxide;
arranging a plurality of measuring points on the rut test piece;
detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide at the plurality of measuring points by adopting a pendulum type friction coefficient tester;
detecting the retroreflection coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide at the plurality of measuring points by adopting a retroreflection coefficient tester;
detecting the color difference between the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rut test piece not doped with the nano titanium dioxide at the plurality of measuring points by using a color difference meter;
calculating the average value of the anti-sliding friction coefficient, the average value of the anti-sliding friction coefficient and the coefficient of variation of the color difference according to the anti-sliding friction coefficient, the anti-sliding coefficient and the color difference of the plurality of measuring points;
and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient average value, the anti-reflecting coefficient average value, the color difference variation coefficient and a preset safety performance contrast relation.
2. The method of claim 1, wherein the process of making an indoor rut test piece comprises:
filling an asphalt mixture into a rutting mold, and flattening and compacting the asphalt mixture;
and spraying the nano titanium dioxide solution on the surface of the asphalt mixture which is flattened and compacted in a uniform and vaporous manner to form the asphalt mixture rut test piece doped with the nano titanium dioxide.
3. A road safety performance testing method is characterized in that the method is applied to an outdoor environment, and comprises the following steps:
arranging a plurality of measuring points;
detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide at the plurality of measuring points by adopting a pendulum type friction coefficient tester;
detecting the retroreflection coefficient of the surface of the asphalt mixture pavement doped with the nano titanium dioxide at the plurality of measuring points by adopting a retroreflection coefficient tester;
detecting the color difference between the surface of the asphalt mixture pavement doped with the nano titanium dioxide and the surface of the asphalt mixture pavement not doped with the nano titanium dioxide at the plurality of measuring points by using a color difference meter;
calculating the average value of the anti-sliding friction coefficient, the average value of the anti-sliding friction coefficient and the coefficient of variation of the color difference according to the anti-sliding friction coefficient, the anti-sliding coefficient and the color difference of the plurality of measuring points;
and determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the average value of the anti-sliding friction coefficient, the average value of the anti-reflecting coefficient, the aberration variation coefficient and a preset safety performance contrast relation.
4. A road safety performance testing system for use in an indoor environment, the system comprising: the system comprises a track test piece, a pendulum type friction coefficient tester, a retro-reflection coefficient tester, a colorimeter and a processor, wherein the track test piece contains an asphalt mixture doped with nano titanium dioxide;
the pendulum-type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide at a plurality of measuring points;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide at a plurality of measuring points;
the color difference meter is used for detecting the color difference between the surface of the asphalt mixture rut test piece doped with the nano titanium dioxide and the surface of the asphalt mixture rut test piece not doped with the nano titanium dioxide at a plurality of measuring points;
the processor is configured with operation instructions executable by the processor to perform the following operations: calculating the average value of the anti-sliding friction coefficient, the average value of the anti-sliding friction coefficient and the coefficient of variation of the color difference according to the anti-sliding friction coefficient, the anti-sliding coefficient and the color difference of the plurality of measuring points;
and determining the safety performance of the asphalt mixture rut test piece doped with the nano titanium dioxide according to the anti-sliding friction coefficient average value, the anti-reflecting coefficient average value, the color difference variation coefficient and a preset safety performance contrast relation.
5. A road safety performance testing system, wherein the system is applied to an outdoor environment, the system comprising: the device comprises a pendulum type friction coefficient tester, a retroreflection coefficient tester, a colorimeter and a processor;
the pendulum-type friction coefficient tester is used for detecting the anti-sliding friction coefficient of the asphalt mixture pavement doped with the nano titanium dioxide at a plurality of measuring points;
the retroreflection coefficient tester is used for detecting the retroreflection coefficient of the asphalt mixture pavement doped with the nano titanium dioxide at a plurality of measuring points;
the color difference meter is used for detecting the color difference between the asphalt mixture pavement doped with the nano titanium dioxide and the asphalt mixture pavement not doped with the nano titanium dioxide at a plurality of measuring points;
the processor is configured with operation instructions executable by the processor to perform the following operations: calculating the average value of the anti-sliding friction coefficient, the average value of the anti-sliding friction coefficient and the coefficient of variation of the color difference according to the anti-sliding friction coefficient, the anti-sliding coefficient and the color difference of the plurality of measuring points;
and determining the safety performance of the asphalt mixture pavement doped with the nano titanium dioxide according to the average value of the anti-sliding friction coefficient, the average value of the anti-reflecting coefficient, the aberration variation coefficient and a preset safety performance contrast relation.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295214A (en) * | 2000-03-23 | 2001-10-26 | Hokkaido Sangyo Sogo Kenkyusho:Kk | Road surface promoting melting of snow by natural energy by receiving ultraviolet ray irradiation |
| CN102928334A (en) * | 2012-08-14 | 2013-02-13 | 北京建筑工程学院 | Evaluation method of asphalt mixture antiskid durability |
| CN104807950A (en) * | 2015-04-22 | 2015-07-29 | 北京建筑大学 | Device and method for evaluating automobile exhaust degradation effect of OGFC mixture |
| CN106885768A (en) * | 2015-12-15 | 2017-06-23 | 王冠红 | Highway detection determines device and assay method with swinging friction coefficient |
| CN206497029U (en) * | 2016-10-17 | 2017-09-15 | 3M中国有限公司 | Retro-reflecting coefficient tester |
| CN107503261A (en) * | 2017-08-10 | 2017-12-22 | 长安大学 | A kind of combined type pitch cooling road surface and its construction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8113736B2 (en) * | 2008-12-23 | 2012-02-14 | Wilson Sr Jack H | Pavement resurfacing equipment and method of application of polymer emulsion |
-
2018
- 2018-03-23 CN CN201810244998.8A patent/CN108490162B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295214A (en) * | 2000-03-23 | 2001-10-26 | Hokkaido Sangyo Sogo Kenkyusho:Kk | Road surface promoting melting of snow by natural energy by receiving ultraviolet ray irradiation |
| CN102928334A (en) * | 2012-08-14 | 2013-02-13 | 北京建筑工程学院 | Evaluation method of asphalt mixture antiskid durability |
| CN104807950A (en) * | 2015-04-22 | 2015-07-29 | 北京建筑大学 | Device and method for evaluating automobile exhaust degradation effect of OGFC mixture |
| CN106885768A (en) * | 2015-12-15 | 2017-06-23 | 王冠红 | Highway detection determines device and assay method with swinging friction coefficient |
| CN206497029U (en) * | 2016-10-17 | 2017-09-15 | 3M中国有限公司 | Retro-reflecting coefficient tester |
| CN107503261A (en) * | 2017-08-10 | 2017-12-22 | 长安大学 | A kind of combined type pitch cooling road surface and its construction method |
Non-Patent Citations (3)
| Title |
|---|
| 纳米二氧化钛涂层沥青路面降解汽车尾气应用效果研究;李博;《中国优秀硕士学位论文全文数据库工程科技II辑2018年》;20180215(第2期);37-40 * |
| 纳米二氧化钛环保涂料在城市道路应用中的试验研究;李佩;《中国优秀硕士学位论文全文数据库工程科技II辑2015年》;20150115(第1期);14-18 * |
| 预成形标线带在高速公路上的应用研究;李春玲;《浙江交通职业技术学院学报》;20141231;第15卷(第4期);1-6 * |
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