CN109580712A - A kind of coating cooling effect evaluation method - Google Patents
A kind of coating cooling effect evaluation method Download PDFInfo
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- CN109580712A CN109580712A CN201811460649.6A CN201811460649A CN109580712A CN 109580712 A CN109580712 A CN 109580712A CN 201811460649 A CN201811460649 A CN 201811460649A CN 109580712 A CN109580712 A CN 109580712A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
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- E—FIXED CONSTRUCTIONS
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- E01C7/356—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively synthetic resin as a binder; Aggregate, fillers or other additives for application on or in the surface of toppings having exclusively synthetic resin as binder
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Abstract
The present invention relates to a kind of coating cooling effect evaluation methods, the method includes the following steps, working environment parameter is designed, design, the design of equivalent radiated power time, the design of radiation intensity and the design of directional light including air themperature, humidity and wind speed；The preparation of road analogy structure, including bituminous pavement model configuration, in the laying temperature data acquisition device of the different depth position of bituminous pavement model configuration, parallel test is carried out as reference group and test group using the bituminous pavement model configuration for not being laid with the bituminous pavement model configuration for hiding hot coating and be laid with screening hot coating；The present invention has filled up road and has hidden the technical problem that hot coating device is applied in Structure Dynamics In The Qinghai-tibet Region, consider influence of the environmental condition to hot coating evaluation effect is hidden, including temperature, humidity, wind speed, radiation intensity, radiated time, influence of the different affecting factors effect to coating cooling effect can be analyzed simultaneously, it is theoretical sufficient, precise and reliable.
Description
Technical field
The invention belongs to technical field of road engineering, more particularly, to a kind of coating cooling effect evaluation method.
Background technique
Bituminous pavement has many advantages, such as that driving comfort level is high, open to traffic is relatively early, is easy maintenance, is widely used in medium
And in high-grade highway, but its color is more black, is more than 90% to solar radiation absorptivity, so as to cause bituminous pavement temperature
It increases.Especially in Structure Dynamics In The Qinghai-tibet Region, solar radiation annual amount is up to 7000-9000MJ.m-2, higher than the eastern region of same latitude
2000-3000MJ.m out-2, so big amount of radiation makes bituminous pavement absorb amount of heat and transmit to roadbed.But Qinghai-Tibet
The bituminous pavement in area is built on the ever-frozen ground of large area, and the heat for accumulating in inside asphalt pavement is transmitted downwards and then led
Cause underlie frozen soil occur thermal stability destroys and aggravated frozen soil thawing problem.
Currently, in order to alleviate Structure Dynamics In The Qinghai-tibet Region freeze thawing problem, domestic and foreign scholars mainly pass through embedded ventilation heat transfer pipe, are laid with
The measures such as insulating layer maintain the low-temperature condition of roadbed, but these measure costs are very high and poor for applicability.In addition, some scholars are logical
The porosity of change bituminous pavement is crossed to inhibit heat transfer, but using porous asphalt in summer high temperature season meeting band
Carry out serious track problem.The above measure does not all account for black asphalt pavement itself and the strong absorption of solar radiation is made
With fundamentally heat cannot being inhibited to enter inside road in summer.In order to cope with by summer sun high-level radiation act on
And Bituminous Pavement Wheel Rut Question caused by urban heat land effect, it hides hot coating and comes into being in urban environment, play preferably
Temperature reduction performance, and hide application study of the hot coating in Structure Dynamics In The Qinghai-tibet Region and be rarely reported.Therefore, it researches and develops one kind and is suitable for Structure Dynamics In The Qinghai-tibet Region
The screening hot coating method of bituminous pavement is great for alleviating frozen soil thawing question meaning.
The cooling effect evaluation method that Now Domestic road surface hides hot coating has ignored air themperature, humidity, wind speed, spoke mostly
Influence of the environmental conditions such as intensity, radiated time to test result is penetrated, only considers the cooling effect of temperature rise period coating, not
In view of temperature stabilization sub stage and the cooling effect of temperature-fall period coating, and only consider coating in bituminous pavement model configuration table
The cooling effect in face is not related to influence of the coating to bituminous pavement model configuration internal temperature field.Current test side
Method data inaccuracy is not comprehensive, time-consuming and laborious, inefficient.And Structure Dynamics In The Qinghai-tibet Region environmental condition and plains region are widely different, needle
To the environmental quality of Structure Dynamics In The Qinghai-tibet Region, consider that environmental factor is highly desirable the influence for hiding hot coating cooling effect, and deeply grind
It is great to research Structure Dynamics In The Qinghai-tibet Region freeze thawing question meaning to inside asphalt pavement temperature profile effect to study carefully coating.
Summary of the invention
The purpose of the present invention is to provide a kind of coating cooling effect evaluation methods, can be used in Structure Dynamics In The Qinghai-tibet Region and hide hot coating
The evaluation of cooling effect.
The technical scheme is that
A kind of coating cooling effect evaluation method, the method include the following steps:
(1) working environment parameter is designed, design, equivalent radiated power time including air themperature, humidity and wind speed
Design, the design of radiation intensity and the design of directional light；
(2) preparation of road analogy structure, including bituminous pavement model configuration, it is deep in the difference of bituminous pavement model configuration
The laying temperature data acquisition device for spending position hides heat using not being laid with the bituminous pavement model configuration for hiding hot coating and being laid with
The bituminous pavement model configuration of coating carries out parallel test as reference group and test group；
(3) and by three step-by-step test methods surface and the internal temperature change curve of bituminous pavement model configuration are obtained,
And the Infrared Thermogram on bituminous pavement model configuration surface or side；
(4) terminate test, obtain temperature variation curve, the bituminous pavement model configuration temperature of bituminous pavement model configuration each point
Degree reaches Infrared Thermogram when stable state；
(5) pass through related software (Infrec Analyzer and Origin software) screening hot coating for statistical analysis
Cooling effect, including bituminous pavement model configuration surface thermal equilibrium analysis, bituminous pavement model configuration alternating temperature process analysis procedure analysis and drip
Green test pavement simulating body structure surface and internal temperature field analysis.
Further, the working environment of the design considerations Structure Dynamics In The Qinghai-tibet Region bituminous pavement of the air themperature, humidity and wind speed
Parameter is designed, and the design of equivalent radiated power time and the design of radiation intensity are designed using equivalent radiated power pyrogen reason, is put down
The design of row light is designed using directional light simulator.
Further, the bituminous pavement model configuration is bituminous pavement common structure level, including surface layer, base and road
Base.
Further, the surface layer includes SBS modified pitch and is the molding track plate test specimen that gathers materials, base with basalt
For framework compact type water stability detritus, roadbed is compacted soil.
Further, the depth of the laying temperature data acquisition device be respectively bituminous pavement model configuration surface,
At depth 5cm and 10cm, each depth location measures five groups of data and takes temperature representative value of its average value as the depth.
Further, the three step-by-step test methods are the temperature rise period, are acquired by temperature data acquisition device and data
Instrument records the temperature of each depth；Stabilization sub stage obtains bituminous pavement model configuration surface and side by thermal infrared imager
The Infrared Thermogram in face obtains the temperature data of entire section all the points；Temperature-fall period terminates the irradiation of directional light, road mould
Quasi- structure enters temperature-fall period.
Further, the temperature data acquisition device is end face temperature probe.
Further, specific preparation process is as follows for screening hot coating:
(a) coating material prepares: selecting the polystyrene base resin with certain ultraviolet resistance as main film forming matter
Matter, rutile titanium dioxide (TiO2) it is used as reflection function profile material, carbon black is as toner pigment, and ceramic particle is as antiskid
Particle, dispersed lubricant and curing agent etc. are used as auxiliary agent；
(b) it stirs evenly: according to the rutile TiO of the component of regulation2, carbon black and a small amount of dispersion moisture agent be added to it is poly-
Among third vinylite, magnetic stirring apparatus is used to stir said mixture 20min with the speed of 2000r/min；
(c) effectively mixing: ultrasonic wave separating apparatus ultrasonic disperse 15min is used；
(d) it filters: mixture being passed through into filter screen according to 400 mesh；
(e) add auxiliary agent: curing agent, defoaming agent addition (d) described in mixture, and use magnetic stirring apparatus with
The speed of 2000r/min stirs 5min, is allowed to uniformly mixed；
(f) it is laid with coating: using every layer of brushing amount 0.4kg/m2And the double-deck mode brushed is sprayed at hot coating is hidden
Bituminous pavement model configuration surface.
Technical solution of the present invention has following advantageous effects:
(1) present invention has filled up road and has hidden the technical problem that hot coating device is applied in Structure Dynamics In The Qinghai-tibet Region, it is contemplated that environment item
Influence of the part to hot coating evaluation effect is hidden, including temperature, humidity, wind speed, radiation intensity, radiated time, while can analyze
Different affecting factors act on the influence to coating cooling effect, theoretical sufficient, precise and reliable.
(2) road of the present invention not only only accounts for the drop of temperature rise period coating with screening hot coating cooling effect evaluation method
Temp effect, and consider the cooling effect of temperature stabilization sub stage and temperature-fall period coating.Relative to conventional test methods, pass through
Three step-by-step test methods analyze the cooling effect of coating more fully hereinafter, and test result is more convincing.
(3) present invention not only has studied coating in the cooling effect of asphalt road table, and has studied coating for pitch
The influence of road surface internal temperature field, it is great that this melts question meaning for research Structure Dynamics In The Qinghai-tibet Region frozen soil.
Detailed description of the invention
The main cities Fig. 1 year total radiation；
The Structure Dynamics In The Qinghai-tibet Region Fig. 2 monthly temperature over the years；
The Structure Dynamics In The Qinghai-tibet Region Fig. 3 August temperature over the years；
Functional form material (the rutile TiO of Fig. 4 different addition quantity2) on the process of bituminous pavement model configuration temperature influence
Figure；The figure can analyze the procedure chart that the pairs of coating temperature reduction performance of different materials group influences.
Functional form material (the rutile TiO of Fig. 5 different addition quantity2) on the result of bituminous pavement model configuration temperature influence
Figure；The figure can analyze the result figure that the pairs of coating temperature reduction performance of different materials group influences, Fig. 4 and Fig. 5 from influence process and shadow
Two aspects of result are rung to analyze the influence of the pairs of coating temperature reduction performance of certain material group comprehensively.
The distribution map that Fig. 6 difference radiation intensity influences bituminous pavement model configuration temperature；The figure can help to analyze spoke
Penetrate the different influences to coating temperature reduction performance of intensity.
Embodiment of Fig. 7 coating under light ringing；The figure can help to analyze coating in day alternates with night effect decline
The influence of warm nature energy.
Fig. 8 is not laid with the bituminous pavement model configuration surface temperature field of coating；
The bituminous pavement model configuration surface temperature field of Fig. 9 laying coating；The comparison of the figure and Fig. 8 can help to analyze
Coating is laid with to the cooling effect of surface of test piece any point.
Figure 10 is not laid with the bituminous pavement model configuration surface data analysis of Uniformity of coating；The figure can be from statistical
Angle helps the temperature representative value of entire surface of test piece in analysis chart 8, to improve the precision of test data.
The bituminous pavement model configuration surface data analysis of Uniformity of Figure 11 laying coating；The figure can be from statistical angle
Degree helps the temperature representative value of entire surface of test piece in analysis chart 9, while the comparison of Figure 10 and Figure 11 can help to analyze coating
In the cooling effect of entire surface of test piece.
Figure 12 is not laid with the bituminous pavement model configuration internal temperature field of coating；
The bituminous pavement model configuration internal temperature field of Figure 13 laying coating；
Affecting laws of Figure 14 coating to bituminous pavement model configuration internal temperature field；The figure and Figure 12, Figure 13 can be helped
Help analysis test specimen internal temperature field, to study coating to the cooling effect inside test specimen, assist in analysis coating for
Improve Structure Dynamics In The Qinghai-tibet Region freeze thawing problem.
Specific embodiment
As shown in figs. 1 to 14, a kind of coating cooling effect evaluation method, the method include the following steps:
(1) working environment parameter is designed, design, equivalent radiated power time including air themperature, humidity and wind speed
Design, the design of radiation intensity and the design of directional light；The design considerations Qinghai-Tibet of the air themperature, humidity and wind speed
The working environment parameter of regional bituminous pavement is designed, and wherein temperature design is 20 DEG C, and humidity is designed as 50%RH, and wind speed is set
It is calculated as 0m/s；
The design of radiated time and the design of radiation intensity are designed using equivalent radiated power pyrogen reason, specific design procedure
It is as follows:
(1.1) design of radiated time
Due to the unlocked value of laboratory test radiation intensity, and outdoor solar radiation changes with time, and tests
It is managed in journey according to equivalent radiated power pyrogen:
W1=W2Formula 1
W1: interior projects the accumulation heat of generation under constant radiant intensity；
W2: the heat that outdoor absorbs when bituminous pavement reaches thermal balance under solar radiation.
(1.1.1)W1Calculating
Assuming that outdoor intensity of solar radiation is in varies with cosine, the origin of t using noon as the time, the meter of solar radiant heat Es
Calculate formula are as follows:
WhenWhen,
WhenWhen, Es=0
ES: the intensity of solar radiation of any time in one day；
PS: the sunshine-duration in one day；
AS: intensity of solar radiation peak in one day.
Assuming that bituminous pavement is in t in one day1Moment reaches outdoor thermal equilibrium state, at this time intensity of solar radiation value EbMeter
Calculate formula are as follows:
Eb: intensity of solar radiation value
t1: at the time of bituminous pavement reaches outdoor thermal equilibrium state
I.e.
I.e.
Total solar radiation energy can be by integrating formula 2 or formula 3, the calculation formula of W1 are as follows:
(1.1.2)W2Calculating
w2=Eht2Formula 5
Eh: the radiation intensity of laboratory test analog light source
t2: the equivalent radiated power time of laboratory test light source
The determination of (1.1.3) equivalent radiated power time
In calculating process, make it is assumed hereinafter that:
Assuming that with outdoor bituminous pavement surface to reach the solar radiation at thermal balance moment strong for the radiation intensity that uses of this test
It spends equal；
Outdoor bituminous pavement reach the thermally equilibrated moment be afternoon 14 when；
Sunshine perdurabgility takes 14h.
Available Eb=Eh,t1=2, it brings formula 1, formula 3 and formula 4 into, obtains
When surface of test piece reaches outdoor equivalent thermal equilibrium temperature in laboratory test, indoor radiated time is 5h.
(1.2) design of radiation intensity
Design principle: analog light source radiation intensity controlling value should approach and solar radiation when outdoor afternoon 13 14 as far as possible
Intensity.If the solar radiant heat average value of some latitude is Ea, formula 2 is integrated, then
It can be obtained by formula 7:
Formula 2 can become:
The monthly average value of a different moments intensity of solar radiation can be calculated using the year total radiation of solar radiation.
Using Golmud, Nagqu, three, Lhasa city as city is represented, reach maximum in August part radiation intensity respectively, Change in Mean model
It encloses for 600-900w/m2, the monitoring of radiation intensity measures monitoring by solar radiation test device, to increase the essence of test
Exactness；
The design of directional light: the distance between the sun and the earth are very remote in nature, therefore sunlight is similar to one kind
Directional light needs the influence using directional light simulator come simulated solar irradiation to road surface, institute during the experiment
The directional light simulator stated includes radiation intensity adjustable pulley, and radiation intensity lifting is arranged on radiation intensity adjustable pulley
Rope, radiation intensity halyard lower end are lifted with directional light lampshade, are provided with directional light adjustable pulley at the top of directional light lampshade, in parallel
It is arranged with directional light on light adjustable pulley and adjusts halyard, directional light adjusts halyard lower end and is connected with light source, in the present embodiment
Light source be bromine tungsten filament lamp point light source, be provided with parallel light emitting device, the parallel light emitting device in the present embodiment below light source
For convex lens, parallel light emitting device is fixed on directional light lampshade.
(2) preparation of road analogy structure, including bituminous pavement model configuration, it is deep in the difference of bituminous pavement model configuration
The laying temperature data acquisition device for spending position hides heat using not being laid with the bituminous pavement model configuration for hiding hot coating and being laid with
The bituminous pavement model configuration of coating carries out parallel test as reference group and test group；
Bituminous pavement model configuration is bituminous pavement common structure level, including surface layer, base and roadbed.
The surface layer includes SBS modified pitch and is the molding track plate test specimen that gathers materials, track plate test specimen with basalt
Gradation be AC-13, with a thickness of 5-15cm, preferably 10cm, base is framework compact type water stability detritus, and groundwork thickness is
10-30cm, preferably 20cm, roadbed are compacted soil, and compacted soil is with a thickness of 5-15cm, preferably 10cm, in order to improve examination
Pitch interlayer heat conduction efficiency during testing avoids heat from concentrating on intermediate or lower part test specimen, uses heat conduction efficiency in test
Higher heat conductive silica gel is to test specimen interlaminar bonding；
The depth of the laying temperature data acquisition device is respectively the surface of bituminous pavement model configuration, depth 5cm
And at 10cm, each depth location measures five groups of data and takes temperature representative value of its average value as the depth, depth 5cm
And it is inserted into temperature data acquisition device after drilling at 10cm by electric drill, then sealed with heat conductive silica gel；The temperature data
Acquisition device is end face temperature probe, and end face temperature probe is existing equipment.
(3) and by three step-by-step test methods surface and the internal temperature change curve of bituminous pavement model configuration are obtained,
And the Infrared Thermogram on bituminous pavement model configuration surface or side；The three step-by-step test methods are divided into:
Temperature rise period: under the irradiation of simulated solar irradiation, reference group and test group respectively enter the temperature rise period.In this rank
Section, the temperature of each depth is recorded by end face temperature probe and data collecting instrument (DT80), and data collecting instrument is existing
Equipment；
Stabilization sub stage: when radiated time reaches 5h, reference group and test group surface and internal data enter the stabilization sub stage；
At this point, the Infrared Thermogram of surface of test piece and side is obtained by thermal infrared imager, to obtain entire section all the points
Temperature data, thermal infrared imager are existing equipment.
Temperature-fall period: after obtaining infrared image by thermal infrared imager, terminate the irradiation of directional light, road analogy structure
Into temperature-fall period.
(4) terminate test, when the temperature on bituminous pavement model configuration surface drops to room temperature, close all installation's power sources and press
Button terminates to test, and obtains the temperature variation curve of bituminous pavement model configuration each point, bituminous pavement model configuration temperature reaches steady
Determine Infrared Thermogram when state；
(5) pass through related software (Infrec Analyzer and Origin software) screening hot coating for statistical analysis
Cooling effect, including bituminous pavement model configuration surface thermal equilibrium analysis, bituminous pavement model configuration alternating temperature process analysis procedure analysis and drip
Green test pavement simulating body structure surface and internal temperature field analysis.
(5.1) bituminous pavement model configuration surface thermal equilibrium analysis
The equation of heat balance of surface of test piece is as follows:
Q'=α (Gs+Gsky)-Gsur-GhFormula 9
The net heat flow density of q ' --- surface of test piece, W/m2；
Absorptivity of α --- the surface of test piece to solar radiation；
Gs--- the total radiation intensity of the sun, W/m2；
Gsky--- atmospheric radiation heat, W/m2；
Gsur--- earth radiation heat, W/m2；
GhGh--- heat convection, W/m2。
When road model configuration temperature reaches the stabilization sub stage, q '=0, the heat absorbed is equal to shed outward
Heat, then road analogy structure is in dynamic thermal balance state.
The principle for hiding hot coating cooling function is to reduce α by the high infrared reflection material in coating, to reduce test specimen
The temperature on surface.Hide hot coating cooling effect can by be not laid with coating road analogy structure in the temperature of stabilization sub stage
Difference indicate.
(5.2) bituminous pavement model configuration alternating temperature process analysis procedure analysis
By end face temperature sensor and data collecting instrument record the temperature rise period, the stabilization sub stage, temperature-fall period temperature
Change curve, cooling effect of the research coating in different phase.
(5.3) bituminous pavement model configuration surface and internal temperature field analysis
(5.3.1) bituminous pavement model configuration surface temperature field
Using the temperature of each point of image zooming-out section of thermal infrared imager shooting, analyzed by origin software,
Data statistic analysis is carried out based on QC quality control chart.Surface of test piece is all divided into 88 × 88 data and transversely position
88 groups of data are divided into, average value (CL), data area (RANGE) and the standard deviation (σ) of each group and entire plane are counted
Carry out QC Quality Control Analysis.The dispersion degree for judging surface of test piece temperature according to the result of statistical analysis and test are using light
The uniformity in source.On the basis of temperature data has good uniformity, the cooling effect of coating is analyzed.
(5.3.2) bituminous pavement model configuration internal temperature field
It is to grind with the track plate test specimen for being laid with coating and be not laid with coating to study test specimen internal temperature changing rule
Study carefully object, under the experimental condition of same light radiation intensity, data is carried out to test specimen side using portable infrared thermal imaging system and are adopted
The temperature field of test specimen side is analyzed by Correlative data analysis software and drawn to collection, analyzes variation rule of the temperature inside test specimen
Rule.
Further, specific preparation process is as follows for screening hot coating:
(a) coating material prepares: selecting the polystyrene base resin with certain ultraviolet resistance as main film forming matter
Matter, rutile titanium dioxide (TiO2) it is used as reflection function profile material, carbon black is as toner pigment, and ceramic particle is as antiskid
Particle, dispersed lubricant and curing agent etc. are used as auxiliary agent；
(b) it stirs evenly: according to the rutile TiO of the component of regulation2, carbon black and a small amount of dispersion moisture agent be added to it is poly-
Among third vinylite, magnetic stirring apparatus is used to stir said mixture 20min with the speed of 2000r/min；
(c) effectively mixing: ultrasonic wave separating apparatus ultrasonic disperse 15min is used；
(d) it filters: mixture being passed through into filter screen according to 400 mesh；
(e) add auxiliary agent: curing agent, defoaming agent addition (d) described in mixture, and use magnetic stirring apparatus with
The speed of 2000r/min stirs 5min, is allowed to uniformly mixed；
(f) it is laid with coating: using every layer of brushing amount 0.4kg/m2And the double-deck mode brushed is sprayed at hot coating is hidden
Bituminous pavement model configuration surface；
Rutile titanium dioxide (TiO2) volumetric concentration characterized with PVC, calculation formula is:
In formula:
Vp: the volume of rutile titanium dioxide；
Vb: the volume of main film forming substance.
As shown in figure 5, according to rutile TiO2The volumetric concentration of volume 5%, 10%, 15%, 20% develops coating, and
It takes the mode of spraying to be injected in surface of test piece, is 700w/m in surface of test piece radiation intensity2, initial temperature is 20 DEG C, relatively
Humidity is the cooling effect of testing coating under conditions of 50%, and acquired results are shown in Fig. 5.
As shown in fig. 6, in 600w/m2、700w/m2、800w/m2Different light radiation under the conditions of, not to be laid with and be laid with
The bituminous pavement model configuration of coating is subjects, and the cooling effect evaluation test for carrying out coating respectively carrys out the drop of testing coating
Temp effect, acquired results are shown in 6.
As shown in fig. 7, in order to measure cooling effect of the coating under light ringing, to be laid with the asphalt road face mould of coating
Quasi- structure and the bituminous pavement model configuration for not being laid with coating are research object, measure coating by light cyclic test three times
The stability of temperature reduction performance.To coating, light cyclic test data are for statistical analysis three times, acquired results such as Fig. 7.
Claims (8)
1. a kind of coating cooling effect evaluation method, it is characterised in that: the method includes the following steps:
(1) working environment parameter is designed, design, equivalent radiated power time including air themperature, humidity and wind speed are set
Meter, the design of radiation intensity and the design of directional light；
(2) preparation of road analogy structure, including bituminous pavement model configuration, in the different depth position of bituminous pavement model configuration
The laying temperature data acquisition device set hides hot coating using not being laid with the bituminous pavement model configuration for hiding hot coating and being laid with
Bituminous pavement model configuration carry out parallel test as reference group and test group；
(3) and by three step-by-step test methods surface and the internal temperature change curve of bituminous pavement model configuration are obtained, and
The Infrared Thermogram on bituminous pavement model configuration surface or side；
(4) terminate test, obtain the temperature variation curve of bituminous pavement model configuration each point, bituminous pavement model configuration temperature reaches
Infrared Thermogram when to stable state；
(5) pass through related software ((Infrec Analyzer and Origin the software)) drop for statistical analysis for hiding hot coating
Temp effect, including bituminous pavement model configuration surface thermal equilibrium analysis, bituminous pavement model configuration alternating temperature process analysis procedure analysis and pitch
Test pavement simulating body structure surface and internal temperature field analysis.
2. a kind of coating cooling effect evaluation method according to claim 1, it is characterised in that: the air themperature,
The working environment parameter of the design considerations Structure Dynamics In The Qinghai-tibet Region bituminous pavement of humidity and wind speed is designed, the design of equivalent radiated power time
Design with radiation intensity is designed using equivalent radiated power pyrogen reason, and the design of directional light is carried out using directional light simulator
Design.
3. a kind of coating cooling effect evaluation method according to claim 1, it is characterised in that: the asphalt road face mould
Quasi- structure is bituminous pavement common structure level, including surface layer, base and roadbed.
4. a kind of coating cooling effect evaluation method according to claim 3, it is characterised in that: surface layer includes SBS modified
Pitch and be to gather materials molding track plate test specimen with basalt, base is framework compact type water stability detritus, and roadbed is compacted soil.
5. a kind of coating cooling effect evaluation method according to claim 1, it is characterised in that: the laying temperature number
Depth according to acquisition device is respectively the surface of bituminous pavement model configuration, at depth 5cm and 10cm, and each depth location is surveyed
It measures five groups of data and takes temperature representative value of its average value as the depth.
6. a kind of coating cooling effect evaluation method according to claim 1, it is characterised in that: three step-by-step tests
Method is the temperature rise period, and the temperature of each depth is recorded by temperature data acquisition device and data collecting instrument；Stabilization sub stage,
The Infrared Thermogram that bituminous pavement model configuration surface and side are obtained by thermal infrared imager, obtains entire section all the points
Temperature data；Temperature-fall period, terminates the irradiation of directional light, and road analogy structure enters temperature-fall period.
7. a kind of coating cooling effect evaluation method according to claim 5 or 6, it is characterised in that: the temperature number
It is end face temperature probe according to acquisition device.
8. a kind of coating cooling effect evaluation method according to claim 1, it is characterised in that: hide hot coating and specifically prepare
Steps are as follows:
(a) coating material prepares: selecting the polystyrene base resin with certain ultraviolet resistance as main film forming substance, gold
Red stone-type titanium dioxide (TiO2) be used as reflection function profile material, carbon black as toner pigment, ceramic particle as antiskid particle,
Dispersed lubricant and curing agent etc. are used as auxiliary agent；
(b) it stirs evenly: according to the rutile TiO of the component of regulation2, carbon black and a small amount of dispersion moisture agent be added to poly- third second
Among ene based resins, magnetic stirring apparatus is used to stir said mixture 20min with the speed of 2000r/min；
(c) effectively mixing: 15 min of ultrasonic wave separating apparatus ultrasonic disperse is used；
(d) it filters: mixture being passed through into filter screen according to 400 mesh；
(e) it adds auxiliary agent: curing agent, defoaming agent is added mixture described in (d), and uses magnetic stirring apparatus with 2000r/
The speed of min stirs 5min, is allowed to uniformly mixed；
(f) it is laid with coating: using every layer of brushing amount 0.4kg/m2And the double-deck mode brushed is sprayed at asphalt road for hot coating is hidden
Face mould intends body structure surface.
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