Method for testing high-temperature performance of drainage asphalt mixture
A high-temperature performance and test method technology, which is applied in the direction of material inspection products, analysis materials, strength characteristics, etc., can solve the problems of complex test methods and inaccurate test results for high-temperature performance, and achieve high reliability and simple test methods.
Pending Publication Date: 2020-12-11
四川科路泰交通科技有限公司 +1
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Problems solved by technology
[0002] The performance of drainage asphalt mixture is a key factor affecting road traffic safety, and it is of great significance to evaluate the high temperature performance of drainage asphalt pavement mixture. The traditional test method for the high temperature performance of drainage asphalt pavement mixture is relatively complicated, and The test results are not precise enough
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Experimental program
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Embodiment
[0030] A method for testing the high temperature performance of drainage asphalt mixture, comprising the following steps:
[0031] S1. Test wheel calibration and sample preparation, record the sample thickness h;
[0032] S2. Place the sample that meets the health preservation period in the testing machine at a preset temperature for constant temperature, place a high-precision thermometer on the sample, and observe the accuracy of the measured temperature and the temperature displayed by the computer in real time;
[0033] S3. Place the sample together with the test mold in a constant temperature water tank that has reached the preset test temperature for constant temperature. The water level in the constant temperature water tank is more than 20mm higher than the upper surface of the sample, and keep warm for 5h-12h;
[0034] S4. Install the displacement sensor to pre-press 10mm, preset the loading times and parameters, start the testing machine to collect data, and record t...
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The invention discloses a method for testing high-temperature performance of a drainage asphalt mixture. The method comprises: correcting a test wheel, preparing a sample, placing the sample conforming to a curing period in a test machine, carrying out constant temperature treatment, placing the sample and a test mold in a constant temperature water tank reaching a preset test temperature, and carrying out constant temperature treatment, wherein the water level in the constant-temperature water tank is 20 mm higher than the upper surface of the sample, and the temperature is kept for 5h to 12h; installing a displacement sensor for prepressing for 10mm, presetting loading times and parameters, starting a testing machine to start to acquire data, and recording a displacement deformation value d1 of the 1890th loading time of the sample, a displacement deformation value d2 of the 2520th loading time of the sample and an actually measured rut depth d3 of the surface of the sample; and calculating the dynamic stability DS of the sample, the deformation DTS of the sample and the rut depth HX and Y of the sample. The test method is simple, the reliability of test results is high, and thetest method is suitable for loading of indoor and on-site formed asphalt mixtures, deformation of wheel pressure, dynamic stability and actual measurement of a rut depth.
Description
technical field [0001] The invention relates to the technical field of asphalt performance detection, in particular to a method for testing the high-temperature performance of drainage asphalt mixture. Background technique [0002] The performance of drainage asphalt mixture is a key factor affecting road traffic safety, and it is of great significance to evaluate the high temperature performance of drainage asphalt pavement mixture. The traditional test method for the high temperature performance of drainage asphalt pavement mixture is relatively complicated, and The test results are not precise enough. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention provides a high-temperature performance test method of drainage asphalt mixture, which is simple and has high reliability of test results, and is suitable for loading and wheeling of asphalt mixture formed indoors and on site. The compression deformation, dyn...
Claims
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IPC IPC(8): G01N3/34G01N3/18G01N3/06G01N33/42
CPCG01N3/34G01N3/18G01N3/06G01N33/42G01N2203/0005G01N2203/0019G01N2203/0033G01N2203/0226G01N2203/0682
Inventor 杨晓强杨俊峰王兰华
Owner 四川科路泰交通科技有限公司