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Indoor accelerated loading abrasion testing machine for evaluating pavement performance of pavement surface

An accelerated loading and wear test technology, applied in the direction of applying repetitive force/pulsation force to test material strength, strength characteristics, test wear resistance, etc., can solve problems such as complex operation, expensive equipment, and long test cycle

Pending Publication Date: 2021-05-11
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, large-scale accelerated loading equipment is expensive, complicated to operate, and the test cycle is long
Some other small accelerated loading equipment, such as the British accelerated loading grinder, cannot truly simulate car tires
There are also some small acceleration loading equipment, the tire width is too small, when testing the anti-skid performance, the accuracy of the data obtained will be reduced, and the influence of the external environment such as temperature, rain, light radiation, etc. cannot be simulated.
[0006] Existing indoor rutting test equipment is various, generally only can simulate the influence of high temperature, and cannot test under different axle loads or rainfall, radiation, and low temperature conditions

Method used

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  • Indoor accelerated loading abrasion testing machine for evaluating pavement performance of pavement surface
  • Indoor accelerated loading abrasion testing machine for evaluating pavement performance of pavement surface
  • Indoor accelerated loading abrasion testing machine for evaluating pavement performance of pavement surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]For asphalt mixture specimens, the specimens are directly made into 30×30×5cm rutting slabs, and for micro-surfacing, mist seals and other seals, wear-resistant specimens are made into 30×30×5cm rutting slabs, Spread a 0.1-2cm sealing layer on it, open the baffle of the sample mold 21, put the four samples into the rut plate in turn, and fix the baffle.

[0040] Lift the grinding wheel 19 and the loading device through the lifting device 7, push the test piece grinding tool with the test piece into the heat preservation cabinet 4, and then anchor the fixed baffle with the fixing screw to prevent movement, and connect the water delivery pipe 10 and the grinding tool End-to-end connection, the wear wheel 19 and the load-adjusting disc 16 are dropped by the lifting device 7, so that the tire's self-gravity and the gravity of the load-adjusting system act on the tire completely, and the tire acts on the road surface.

[0041] Turn on the power button, adjust the speed adjust...

Embodiment 2

[0044] For asphalt mixture specimens, the specimens were made into 30×30×5cm rutting slabs, and for micro-surfacing, mist seals and other seals, wear-resistant specimens were made into 30×30×5cm rutting slabs. Spread a 0.1-2cm sealing layer on it, open the baffle of the sample mold 21, put the four samples into the rut plate in turn, and fix the baffle.

[0045] Raise the grinding wheel 19 and the loading device through the lifting device 7, push the test piece grinding tool with the test piece into the heat preservation cabinet 4, then anchor the fixed baffle with screws to prevent movement, and align the water delivery pipe 10 with the grinding tool Connect, drop the wear wheel 19 and the load-adjusting disk 16 by the lifting device 7, so that the tire's self-gravity and the gravity of the load-adjusting system act on the tire completely, and the tire acts on the road surface.

[0046] Turn on the power button, adjust the speed adjustment button, so that the relative speed b...

Embodiment 3

[0049] For asphalt mixture specimens, the specimens were made into 30×30×5cm rutting slabs, and for micro-surfacing, mist seals and other seals, wear-resistant specimens were made into 30×30×5cm rutting slabs. Spread a 0.1-2cm sealing layer on it, open the baffle of the sample mold 21, put the four samples into the rut plate in turn, fix the baffle, and push it into the heat preservation cabinet 4.

[0050] The abrasive wheel 19 and the loading device are raised by the lifting device 7, and the test piece grinding tool with the test piece is pushed into the heat preservation cabinet 4, and then the fixed baffle is anchored by fixing screws to prevent movement. Then the water delivery pipe 10 is oppositely connected with the grinding tool, and the grinding wheel 19 and the load-adjusting disk 16 are dropped by the lifting device 7, so that the gravity of the tire self-gravity and the load-adjusting system act on the tire completely, and the tire acts on the road surface.

[005...

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Abstract

The invention discloses an indoor accelerated loading abrasion testing machine for evaluating the pavement performance of pavement surface; the machine is characterized in that a motor and a speed reducer are arranged at the top of a heat preservation case, and an output shaft of the motor is connected with one end of a coupler through the speed reducer; the other end of the coupler is inserted into the heat preservation case and then penetrates through load adjusting discs to be connected with a loading chassis, an abrasion wheel is arranged at the bottom of the loading chassis, a sample mold is located in the heat preservation case and located at the bottom of the heat preservation case, an abrasion sample to be tested is located in the heat preservation case, and the abrasion wheel is located on the abrasion sample to be tested; a laser counting device used for detecting the moving cycle index of the abrasion wheel is arranged on the side face of the heat preservation case. The testing machine can evaluate the influence of long-term action of vehicle tires on the surface of the road surface under different testing conditions.

Description

technical field [0001] The invention belongs to the technical field of highway maintenance, and relates to an indoor accelerated loading wear tester used for road surface performance evaluation. Background technique [0002] With the gradual improvement of the road network, the mileage of maintenance roads has increased year by year, and the road maintenance technology has been greatly developed. Greatly improve the road performance and prolong the service life of the road, but this sealing technology is mainly used to improve the anti-skid and wear resistance due to its thin thickness, so it is necessary to determine the specific maintenance timing to save economic costs, but in the process When judging the timing of maintenance, whether it is real-time tracking and testing of pavement performance or construction of test road sections, huge economic costs will be incurred. [0003] In addition to the wheel load, the existing pavement performance is also greatly affected by...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N3/32G01N17/00G01N3/06
CPCG01N3/06G01N3/068G01N3/32G01N3/56G01N3/567G01N17/002G01N17/004G01N2203/0005G01N2203/0641G01N2203/0658
Inventor 郑木莲刘侠高源刘航丁晓岩刘珊张文武
Owner CHANGAN UNIV