CN103900935A - Evaluation method for ice and snow removing effects of coating type anti-freezing road surface - Google Patents

Evaluation method for ice and snow removing effects of coating type anti-freezing road surface Download PDF

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CN103900935A
CN103900935A CN201410112166.2A CN201410112166A CN103900935A CN 103900935 A CN103900935 A CN 103900935A CN 201410112166 A CN201410112166 A CN 201410112166A CN 103900935 A CN103900935 A CN 103900935A
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deicing
coating material
test piece
contact angle
snow
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朱吉鹏
马辉
杨若冲
钱吮智
李凯
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Southeast University
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Southeast University
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Abstract

本发明公开了一种涂层型抗冻路面除冰雪效果的评价方法，采用加速加载磨耗仪对准备好的试件表面进行不同程度的磨耗；然后根据表面涂层材料除冰雪的原理，即其憎水性能，分析经过磨耗之后试件表面与水的接触角大小，以此评价不同工况下路表面涂层材料的除冰雪效果；接触角越大则表明试件磨耗表面涂层材料的除冰雪效果越好，反之则表明试件磨耗表面涂层材料的除冰雪效果越差。本发明具有操作简单、测试速度快等优势。The invention discloses a method for evaluating the effect of deicing and snow-removing coating-type antifreeze pavement, which adopts an accelerated loading wear instrument to wear the surface of a prepared test piece to different degrees; Hydrophobic performance, analyze the contact angle between the surface of the test piece and water after abrasion, so as to evaluate the deicing and snow removal effect of the coating material on the road surface under different working conditions; The better the ice and snow effect, on the contrary, the worse the ice and snow removal effect of the wear surface coating material of the specimen. The invention has the advantages of simple operation, fast testing speed and the like.

Description

The evaluation method of the freeze proof road surface deicing snow of a kind of coating type effect
Technical field
The evaluation method that the present invention relates to the freeze proof road surface deicing snow of a kind of coating type effect, belongs to traffic engineering technology.
Background technology
Bitumen Pavement Anti-Skid Performance is one of key factor ensureing vehicle safe driving.But the probability that in world wide, extreme climate occurs in recent years greatly increases, the icing phenomenon of China's road snow in winter is comparatively common.Data shows, the attachment coefficient of dry, accumulated snow, the bituminous pavement that freezes is about respectively 0.6,0.2,0.15.Obviously, ice and snow road will have a strong impact on the driving safety of vehicle, and road accident rate is higher.
To processing the icing problem of road snow, for many years, a large amount of research work has been done by road traffic department of various countries, explores the icing method of many removing road snow mantles.These methods can be divided into: the outside deicing technology in road surface, the inner deicing technology in road surface.Wherein the outside deicing technology in road surface can realize by the coating material that applies hydrophobic nature at asphalt mat.In the time that winter, road surface froze, this coating can obviously reduce the cohesive force between ice sheet and road surface, and rolling lower layer icy on road at vehicle can come off from road surface automatically.Adopt machinery or the method for manually rooting out also can process efficiently, easily layer icy on road.But how evaluation table topcoat material deicing effect of different applying working conditions on road is perplexing research worker, user always.At present, the method of evaluation table topcoat material deicing effect is making test section actual measurement deicing effect, though the method can well be evaluated its deicing endurance issues, it is subject to the restriction of factors, and needs to consume a large amount of time, human and material resources etc.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the evaluation method of the freeze proof road surface deicing snow of a kind of coating type effect, to solve the method for current employing making experimental road, the technical matters such as the condition such as the method is consuming time, consumption power and weather, starting material is limited.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
The evaluation method of the freeze proof road surface deicing snow of a kind of coating type effect, combine accelerated loading abrasion test and contact angle analysis experiment, first adopt accelerated loading abrasion instrument to carry out abrasion in various degree to ready test specimen surface, simulate the abrasion situation on real road with this; Then according to the principle of coating material deicing, i.e. its hydrophobicity performance, analyzes the contact angle size with water through test specimen surface after abrasion, evaluates the deicing effect of road surfaces coating material under different operating modes with this; Contact angle is larger shows that the deicing effect of test specimen wear surface coating material is better, otherwise shows that the deicing effect of test specimen wear surface coating material is poorer; When being greater than 90 °, contact angle all shows that test specimen surface still has certain deicing ability; Specifically comprise the steps:
(1) test material preparation: prepare the test specimen of asphalt, then apply a certain amount of deicing coating material at the upper surface of test specimen;
(2) acceleration loads abrasion test: the test specimen that is coated with coating material that step (1) is obtained carries out abrasion in various degree on accelerated loading abrasion instrument (Measuring Device used for asphalt mixture);
(3) hydrophobic nature experiment: the different operating mode test specimens that step (2) is obtained cut into the thin slice that optical video contact angle instrument can be tested, test the contact angle of its wear surface, index using contact angle as evaluation table topcoat material deicing performance, contact angle is larger shows that the deicing effect of test specimen wear surface coating material is better, otherwise shows that the deicing effect of test specimen wear surface coating material is poorer.
Preferably, in described step (1), test specimen is by the moulding of rut forming machine, test specimen be of a size of the wide * of long * high=300*50*50, the mm of unit.
Preferably, in described step (1), the deicing coating material on test specimen surface is divided into 3～7(3～5) inferior even coating, each interval between coating 5～60min(10～60min), to make the coating material on test specimen surface more even; According to the different deicing performances of coating material and the requirement of road surfaces cling property, apply 0.3～1kg/m at test specimen upper surface altogether 2coating material.
Preferably, in described step (3), being packed of cutting out be of a size of the wide * of long * high=50*50*10, the mm of unit, so that can test on contact angle analyser.
Beneficial effect: the evaluation method of the freeze proof road surface deicing of coating type provided by the invention snow effect, simple to operate, be not subject to the impact of external environment, save time and laborsaving, and can reflect preferably the permanance of road deicing snow surface coating.
Brief description of the drawings
Fig. 1 is the test specimen surface of different operating modes and the contact angle of water that adopts the inventive method to record, the wherein contact angle of 1 (a) for recording without abrasion operating mode, the contact angle that 1 (b) records for abrasion 0.5h operating mode, the contact angle that 1 (c) records for abrasion 1h operating mode;
Fig. 2 is the shear resistance schematic diagram at (interface of test specimen wearing surface and ice cube) after different wear intensity test specimen upper surfaces freeze.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Specific embodiment 1
An evaluation method for the freeze proof road surface deicing snow of coating type effect, comprises the following steps:
Step (1): test material preparation
First, prepare the test specimen 1 of stone mastic asphalt (SMA-13), sample dimensions is that the wide * of the long * of 300mm*50mm*50mm(is high); Then surface applies a certain amount of deicing coating material thereon, point 3 coatings, and every minor tick 30 minutes, applies 0.75kg/m at test specimen upper surface altogether 2deicing coating material;
Step (2): accelerated loading abrasion test
The test specimen upper surface that scribbles deicing coating material that step (1) is obtained does not wear away on accelerated loading abrasion instrument (asphalt Measuring Device), simulates the Road Surface situation of firm coating deicing coating material with this;
Step (3): contact angle analysis experiment
The test specimen 1 of step (2) is cut into the required test specimen of contact angle analyser 2, and sample dimensions is that the wide * of the long * of 50mm*50*10mm(is high); Then on contact angle analyser, test the contact angle size of test specimen wearing surface, adopt the contact angle size on pure water and test specimen 2 surfaces to come deicing effect and the permanance thereof of evaluation path deicing coating material; Test result shows that pure water is 136.7 DEG C at the contact angle on test specimen 2 surfaces, illustrates that test specimen surface has good hydrophobic nature, i.e. the very low effect of ice and snow and test specimen surface cohesive force.
Specific embodiment 2
An evaluation method for the freeze proof road surface deicing snow of coating type effect, comprises the following steps:
Step (1): test material preparation
First, prepare the test specimen 1 of stone mastic asphalt (SMA-13), sample dimensions is that the wide * of the long * of 300mm*50mm*50mm(is high); Then surface applies a certain amount of deicing coating material thereon, point 3 coatings, and every minor tick 30 minutes, applies 0.75kg/m at test specimen upper surface altogether 2deicing coating material;
Step (2): accelerated loading abrasion test
The test specimen upper surface that scribbles deicing coating material that step (1) is obtained carries out 2520 abrasion on accelerated loading abrasion instrument (asphalt Measuring Device), to stand the situation of automobile primary driving wheel abrasion on this simulated roadway;
Step (3): contact angle analysis experiment
The test specimen 1 that step (2) has been worn away cuts into the required test specimen of contact angle analyser 2, and sample dimensions is that the wide * of the long * of 50mm*50*10mm(is high); Then on contact angle analyser, test the contact angle size of test specimen wearing surface, adopt the contact angle size on pure water and test specimen 2 surfaces to come deicing effect and the permanance thereof of evaluation path deicing coating material; Test result shows that pure water is 104.3 DEG C at the contact angle on test specimen 2 surfaces, and the test specimen through abrasion in 0.5 hour is described, its surface is very low with the cohesive force of ice and snow, but this cohesive force is higher than the test specimen without abrasion.
Specific embodiment 3
An evaluation method for the freeze proof road surface deicing snow of coating type effect, comprises the following steps:
Step (1): test material preparation
First, prepare the test specimen 1 of stone mastic asphalt (SMA-13), sample dimensions is that the wide * of the long * of 300mm*50mm*50mm(is high); Then surface applies a certain amount of deicing coating material thereon, point 3 coatings, and every minor tick 30 minutes, applies 0.75kg/m at test specimen upper surface altogether 2deicing coating material;
Step (2): accelerated loading abrasion test
The test specimen upper surface that scribbles deicing coating material that step (1) is obtained carries out 5040 abrasion on accelerated loading abrasion instrument (asphalt Measuring Device), to stand the situation of automobile primary driving wheel abrasion on this simulated roadway;
Step (3): contact angle analysis experiment
The test specimen 1 that step (2) has been worn away cuts into the required test specimen of contact angle analyser 2, and sample dimensions is that the wide * of the long * of 50mm*50*10mm(is high); Then on contact angle analyser, test the contact angle size of test specimen wearing surface, adopt the contact angle size on pure water and test specimen 2 surfaces to come deicing effect and the permanance thereof of evaluation path deicing coating material; Test result shows that pure water is 97.1 DEG C at the contact angle on test specimen 2 surfaces, and the test specimen through abrasion in 1.0 hours is described, its surface is still lower with the cohesive force of ice and snow, and sleet is easier on the road surface that has this hydrophober coating remove.
Specific embodiment 4
An evaluation method for the freeze proof road surface deicing snow of coating type effect, comprises the following steps:
Step (1): test material preparation
First, prepare the test specimen 1 of stone mastic asphalt (SMA-13), sample dimensions is that the wide * of the long * of 300mm*50mm*50mm(is high); Then surface applies a certain amount of deicing coating material thereon, point 4 coatings, and every minor tick 20 minutes, applies 0.50kg/m at test specimen upper surface altogether 2deicing coating material;
Step (2): accelerated loading abrasion test
The test specimen upper surface that scribbles deicing coating material that step (1) is obtained carries out 5040 abrasion on accelerated loading abrasion instrument (asphalt Measuring Device), to stand the situation of automobile primary driving wheel abrasion on this simulated roadway;
Step (3): contact angle analysis experiment
The test specimen 1 that step (2) has been worn away cuts into the required test specimen of contact angle analyser 2, and sample dimensions is that the wide * of the long * of 60mm*40*20mm(is high); Then on contact angle analyser, test the contact angle size of test specimen wearing surface, adopt the contact angle size on pure water and test specimen 2 surfaces to come deicing effect and the permanance thereof of evaluation path deicing coating material; Test result shows that pure water is 86.5 DEG C at the contact angle on test specimen 2 surfaces, and the test specimen through abrasion in 1.0 hours be described, and the cohesive force of itself and ice and snow is still lower, and sleet is easier to removing on the road surface that has this hydrophober coating.
Specific embodiment 5
An evaluation method for the freeze proof road surface deicing snow of coating type effect, comprises the following steps:
Step (1): test material preparation
First, prepare the test specimen 1 of stone mastic asphalt (SMA-13), sample dimensions is that the wide * of the long * of 300mm*50mm*50mm(is high); Then surface applies a certain amount of deicing coating material thereon, point 5 coatings, and every minor tick 10 minutes, applies 0.80kg/m at test specimen upper surface altogether 2deicing coating material;
Step (2): accelerated loading abrasion test
The test specimen upper surface that scribbles deicing coating material that step (1) is obtained carries out 5040 abrasion on accelerated loading abrasion instrument (asphalt Measuring Device), to stand the situation of automobile primary driving wheel abrasion on this simulated roadway;
Step (3): contact angle analysis experiment
The test specimen 1 that step (2) has been worn away cuts into the required test specimen of contact angle analyser 2, and sample dimensions is that the wide * of the long * of 60mm*40*20mm(is high); Then on contact angle analyser, test the contact angle size of test specimen wearing surface, adopt the contact angle size on pure water and test specimen 2 surfaces to come deicing effect and the permanance thereof of evaluation path deicing coating material; Test result shows that pure water is 89.7 DEG C at the contact angle on test specimen 2 surfaces, and the test specimen through abrasion in 1.0 hours be described, and the cohesive force of itself and ice and snow is still lower, and sleet is easier to removing on the road surface that has this hydrophober coating.
Adopt shearing experiment to verify the reliability of contact angle index.Fig. 2 is test specimen through after abrasion in various degree, the relation of the shear resistance at (interface of test specimen wearing surface and ice sheet) after test specimen freezes.Because the fewer contact angle of abrasion number of times of test specimen is larger, as shown in Figure 2, contact angle is larger, and the shear resistance at test specimen wearing surface and ice sheet interface is less; And when contact angle < 90, its shear resistance is all less than without the shear resistance of applying coating agent test specimen (3.5Mpa).This illustrates that method of the present invention is to evaluate the effective ways of surface coating agent deicing effect.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (3)

1.一种涂层型抗冻路面除冰雪效果的评价方法，其特征在于：采用加速加载磨耗仪对准备好的试件表面进行不同程度的磨耗；然后根据表面涂层材料除冰雪的原理，即其憎水性能，分析经过磨耗之后试件表面与水的接触角大小，以此评价不同工况下路表面涂层材料的除冰雪效果；接触角越大则表明试件磨耗表面涂层材料的除冰雪效果越好，反之则表明试件磨耗表面涂层材料的除冰雪效果越差；具体包括如下步骤：1. An evaluation method of deicing and snowing effect of coating type antifreeze pavement, is characterized in that: adopt accelerated loading wear instrument to carry out abrasion in various degrees to the prepared test piece surface; Then according to the principle of surface coating material deicing and snowing, That is, its hydrophobic performance, analyze the contact angle between the surface of the test piece and water after abrasion, so as to evaluate the deicing and snow removal effect of the road surface coating material under different working conditions; the larger the contact angle, the greater the wear of the surface coating material of the test piece The better the ice and snow removal effect, on the contrary, the worse the ice and snow removal effect of the wear surface coating material of the test piece; the specific steps are as follows: （1）试件制备：制备沥青混合料的试件，然后在试件的上表面涂覆一定量的除冰雪表面涂层材料；(1) Preparation of test piece: prepare a test piece of asphalt mixture, and then coat a certain amount of de-icing and snow surface coating material on the upper surface of the test piece; （2）加速度加载磨耗实验：将步骤（1）得到的涂覆有表面涂层材料的试件在加速加载磨耗仪上进行不同程度的磨耗；(2) Accelerated loading wear test: the test piece coated with the surface coating material obtained in step (1) was subjected to different degrees of wear on the accelerated loading wear instrument; （3）憎水性实验：将步骤（2）得到的不同工况试件切割成光学视频接触角仪可以测试的薄片，测试其磨耗表面的接触角，将接触角作为评价表面涂层材料除冰雪性能的指标，接触角越大则表明试件磨耗表面涂层材料的除冰雪效果越好，反之则表明试件磨耗表面涂层材料的除冰雪效果越差。(3) Hydrophobicity test: Cut the specimens under different working conditions obtained in step (2) into thin slices that can be tested by an optical video contact angle meter, test the contact angle of the abrasive surface, and use the contact angle as an evaluation of the surface coating material to remove ice and snow The performance index, the larger the contact angle, the better the deicing and snow removal effect of the wear surface coating material of the test piece, and vice versa, the worse the deicing and snow removal effect of the wear surface coating material of the test piece. 2.根据权利要求1所述的涂层型抗冻路面除冰雪效果的评价方法，其特征在于：所述步骤（1）中，试件通过车辙成型机成型，试件的尺寸为长*宽*高=300*50*50，单位mm。2. The evaluation method for deicing and snow removal effect of coating-type antifreeze pavement according to claim 1, characterized in that: in the step (1), the test piece is formed by a rutting forming machine, and the size of the test piece is length*width *Height=300*50*50, unit mm. 3.根据权利要求1所述的涂层型抗冻路面除冰雪效果的评价方法，其特征在于：所述步骤（1）中，试件表面的除冰雪表面涂层材料分为3～7次均匀涂覆，每次涂覆间隔5～60min；根据表面涂层材料的不同除冰雪性能及路表面抗滑性能要求，共在试件上表面涂覆0.3～1kg/m2的表面涂层材料。3. The method for evaluating the effect of deicing and snow-removing coating-type antifreeze pavement according to claim 1, characterized in that: in the step (1), the deicing and snow-removing surface coating material on the surface of the test piece is divided into 3 to 7 times Uniform coating, each coating interval is 5-60min; according to the different ice and snow removal performance of the surface coating material and the anti-skid performance requirements of the road surface, a total of 0.3-1kg/ m2 surface coating material is coated on the upper surface of the test piece .
CN201410112166.2A 2014-03-24 2014-03-24 Evaluation method for ice and snow removing effects of coating type anti-freezing road surface Pending CN103900935A (en)

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CN105572038A (en) * 2016-03-18 2016-05-11 交通运输部公路科学研究所 Asphalt and ore material adhesion evaluation method based on wetting theory
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CN112255127A (en) * 2020-10-12 2021-01-22 四川省公路规划勘察设计研究院有限公司 Low-freezing-point pavement long-term effectiveness evaluation device and method considering service environment
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Application publication date: 20140702