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Simulation test method of road surface anti-skidding overlaying material unconsolidation and particle fall and testing equipment thereof

A simulation test, anti-skid technology, applied in the direction of material weighing, analyzing materials, measuring devices, etc., can solve problems such as limitations of test methods and methods

Inactive Publication Date: 2010-12-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above analysis shows that there is an accelerated pavement wear test device in China, which can be combined with a pendulum friction coefficient tester to detect pavement wear or polishing performance, but its test methods and methods have great limitations and cannot be used for reasonable To characterize the anti-loosing and chipping performance of non-slip overlay materials

Method used

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  • Simulation test method of road surface anti-skidding overlaying material unconsolidation and particle fall and testing equipment thereof
  • Simulation test method of road surface anti-skidding overlaying material unconsolidation and particle fall and testing equipment thereof
  • Simulation test method of road surface anti-skidding overlaying material unconsolidation and particle fall and testing equipment thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Embodiment 1 (epoxy resin non-slip paving material):

[0049] The size of the test specimen 9 is 300mm long × 300mm wide × 50mm thick. The test specimen 9 is made of cement concrete with a thickness of 40mm as the bottom pavement panel, and a layer of non-slip surface material with a total thickness of about 10mm is laid on the surface. . The anti-skid overlay material surface layer is paved in two layers: the amount of epoxy adhesive for the first layer is 1.0L / m 2 , the dosage of basalt fine aggregate is 5.4kg / m 2 ; The dosage of the second layer of epoxy adhesive is 2.0L / m 2 , the dosage of basalt fine aggregate is 7.6kg / m 2 .

[0050] refer to figure 1 As shown in the schematic diagram of the simulation test equipment for the loosening of the anti-skid overlay material on the road surface, the test piece 9 is placed on the test platform 15, and the weight and position of the friction-adjustable counterweight 5 on the friction loading lever 2 are adjusted, and t...

Embodiment 2

[0052] Embodiment 2 (epoxy asphalt non-slip overlay material):

[0053] The size of the test piece 9 is 1000mm long x 300mm wide x 37mm thick. The test piece 9 is made of a 12mm thick steel plate as the bottom pavement panel, and a layer of anti-skid surface material with a total thickness of about 25mm is laid on the surface. The anti-slip overlay material surface layer is prepared from epoxy asphalt and basalt aggregates less than 9.5mm into fine epoxy asphalt mixture. Among them, the amount of epoxy asphalt is 6.3%.

[0054] refer to figure 1 As shown in the schematic diagram of the simulation test equipment for the loosening of the anti-skid overlay material on the road surface, the test piece 9 is placed on the test platform 15, and the weight and position of the friction-adjustable counterweight 5 on the friction loading lever 2 are adjusted, and the setting The friction force between the rubber friction plate 3 and the tire 4 is 1.0N per square millimeter. Adjust the...

Embodiment 3

[0056] Embodiment 3 (hot asphalt non-slip overlay):

[0057] The size of the test piece 9 is 500mm long x 300mm wide x 65mm thick. The test piece 9 is made of cement concrete with a thickness of 50mm as the bottom pavement panel, and a layer of non-slip surface material with a total thickness of about 15mm is laid on the surface. . The surface layer of anti-slip overlay material is prepared by hot asphalt and basalt aggregates less than 9.5mm. The surface layer is paved in two layers: the spraying amount of the first layer of hot asphalt is 0.6L / m 2 , the dosage of basalt fine aggregate is 2.0kg / m 2 ; The dosage of the second layer of epoxy adhesive is 0.4L / m 2 , the dosage of basalt fine aggregate is 1.6kg / m 2 .

[0058] refer to figure 1 As shown in the schematic diagram of the simulation test equipment for the loosening of the anti-skid overlay material on the road surface, the test piece 9 is placed on the test platform 15, and the weight and position of the friction-...

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Abstract

The invention discloses a simulation test method of road surface anti-skidding overlaying material unconsolidation and particle fall, comprising the following steps: 1) overlaying the anti-skidding overlaying material to be tested on the road surface panel surface to be prepared into a test piece; 2) putting the test piece below a tyre; 3) adjusting a frictional force and a wheel pressure applied on the test piece surface by the tyre, and adjusting the opposite trip distance and the travel speed between the tyre and the test piece; 4) carrying out opposite alternate motion to the tyre and the test piece; collecting aggregate particles falling from the test piece surface; and recording the quality of the falling aggregate particles for different times of alternate motion between the tyre and the test piece. The test method for the testing equipment comprise a movable test bed, the tyre, a tyre pressure loading mechanism, a frictional force loading mechanism and a driving mechanism, wherein the test bed can be used for placing the test piece, the tyre is arranged on the test piece, the tyre pressure loading mechanism is connected with the spindle of the tyre, the frictional force loading mechanism is matched with the tread of the tyre, and the power output end of the driving mechanism is connected with the test bed.

Description

technical field [0001] The invention relates to the evaluation of the anti-loosing and particle-dropping performance of an anti-slip overlay material on a pavement surface, in particular to a simulation test method for loose particle-dropping of an anti-skid overlay material on a pavement surface and a testing device thereof. Background technique [0002] After long-term use of asphalt concrete or cement concrete pavement, its surface anti-skid performance will drop sharply, which will easily lead to serious traffic accidents, so it is difficult to meet the requirements of road safety. The skid resistance of a pavement surface can be measured by its coefficient of friction, which is generally measured by a pendulum coefficient of friction tester. Since the anti-skid performance belongs to the damage of the function of the pavement surface, it has little effect on the bearing capacity of the pavement structure. Therefore, in the actual pavement maintenance project, the attenu...

Claims

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Application Information

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IPC IPC(8): G01N5/00
Inventor 磨炼同方星吴少鹏束冬林
Owner WUHAN UNIV OF TECH
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