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Evaluation method of asphalt mixture antiskid durability

A kind of asphalt mixture, durability technology, applied in the direction of analysis materials, measuring devices, instruments, etc., can solve the problems of road surface wear and affect the friction coefficient of road surface

Active Publication Date: 2015-07-01
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional method of measuring the friction coefficient of the road surface only measures the friction coefficient of the mixture surface at a single moment, but in the actual situation, there are continuous vehicle loads on the road surface, which always have an abrasive effect on the road surface and affect the road surface friction coefficient.
As mentioned above, there is still a lack of systematic methods for evaluating the skid resistance of asphalt mixtures in China.

Method used

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  • Evaluation method of asphalt mixture antiskid durability
  • Evaluation method of asphalt mixture antiskid durability

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The engineering overview of this embodiment is: the design of the AC-13 type asphalt mixture material on the upper layer of the asphalt pavement of the Zhengshi Expressway, the project adopts the expressway standard, two-way six lanes, and the design speed is 120 kilometers per hour.

[0019] The water rutting test was used to evaluate the anti-slip durability of asphalt mixture.

[0020] 1) The test piece is formed by using a wheel roller forming machine to simulate the road compaction process. The width of the rolling wheel is 300mm, the compaction line load is 300N / cm, and the test piece is a square plate-shaped test piece of 300×300×50mm;

[0021] 2) Measure the surface skid resistance index BPN of the new asphalt mixture specimens according to the "Highway Subgrade Pavement Field Test Regulations" T0964-95.

[0022] 3) Use a constant temperature oven to keep the test piece at a test temperature of 25°C for 4 to 6 hours;

[0023] 4) At the test temperature of 25°C,...

Embodiment 2

[0028] The project overview of this embodiment is: the design of SMA-13 ​​type asphalt mixture material for the upper layer of the asphalt pavement of Zhengshi Expressway, the project adopts the expressway standard, two-way six lanes, and the design speed is 120 kilometers per hour.

[0029] The water rutting test was used to evaluate the anti-slip durability of asphalt mixture.

[0030] 7) The test piece is formed by using a wheel roller forming machine to simulate the road compaction process. The width of the rolling wheel is 300mm, the compaction line load is 300N / cm, and the test piece is a square plate-shaped test piece of 300×300×50mm;

[0031] 8) Measure the surface skid resistance index BPN of the new asphalt mixture specimens according to the "Highway Subgrade Pavement Field Test Regulations" T0964-95.

[0032] 9) Use a constant temperature oven to keep the test piece at a test temperature of 25°C for 4 to 6 hours;

[0033] 10) At the test temperature of 25°C, the wa...

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Abstract

The invention relates to an evaluation method of asphalt mixture antiskid durability. The asphalt mixture antiskid durability evaluation method provided by the invention is based on a transverse distributed rut test. According to the invention, asphalt mixture antiskid performance attenuation under repeated loading effects can be simulated, such that two key indicators used for evaluating asphalt mixture antiskid durability, which are antiskid durability index RSN and antiskid durability attenuation rate RSR under repeated loading, can be obtained. With the method, antiskid durability of different asphalt mixtures can be effectively evaluated, and a technical indicator basis is provided for asphalt pavement long-service-life design and full-life-cycle asphalt pavement maintenance planning based on performance. In processes of asphalt pavement design, construction, and maintenance, an effective evaluation method is provided for asphalt mixture antiskid durability and antiskid durability index attenuation laws of different types of asphalt mixtures.

Description

technical field [0001] The invention relates to an evaluation method for the anti-skid durability performance of asphalt mixture, which belongs to the technical field of road paving materials and their processing and preparation. Background technique [0002] The anti-skid performance of the road surface refers to the sufficient frictional resistance generated by the tire slipping along the road surface when the tire is braked, so that the vehicle can brake within a reasonable distance under various environmental conditions. [0003] By analyzing the composition of asphalt mixture, it can be found that there are two main methods to improve the skid resistance of asphalt mixture pavement, one is to increase the microstructure of asphalt mixture, and the other is to increase the macrostructure of asphalt mixture. It has been concluded that the microstructure of the pavement plays a decisive role in the anti-skid performance of the pavement when the vehicle speed is relatively ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
Inventor 徐世法索智赵培松樊祥磊樊祥英李根
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE