An accelerated polishing test method for asphalt mixture specimens
An asphalt mixture and accelerated polishing technology, which is applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of long duration, less research work, and difficulty in accurately simulating actual driving conditions, etc., and achieve easy-to-reproduce effects
Inactive Publication Date: 2016-04-20
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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Problems solved by technology
[0003] At present, the anti-skid performance attenuation experiments of highway pavement generally have long duration and the actual driving conditions are difficult to accurately simulate. The accelerated loading testing machine in the prior art can only realize the process of polishing, and cannot directly judge the anti-skid and wear resistance of pavement materials
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[0014] The present invention will be described in further detail below by means of specific embodiments:
[0015] 1. Instrument testing principle
[0016] Schematic diagram of pavement accelerated grinding and abrasion instrument figure 1 As shown, it includes a counterweight, a test specimen, a polished specimen, a test specimen fixing mechanism and a polished specimen fixing mechanism located under the test specimen. The polished specimen fixing mechanism is driven by a motor and can be tested relative to The specimen fixing mechanism performs reciprocating motion. It also includes sequentially connecting the electric lifting system, the lifting platform and the test piece fixing mechanism. The center of the lower part of the lifting platform is connected with a card slot suitable for the test piece fixing mechanism through a connecting rod bolt, and the clamping between the lifting platform and the test piece fixing mechanism An elastic element is connected, and the count...
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The invention discloses an accelerated polishing test method of a bituminous mixture specimen for judging the skid resistance and abrasion resistance of materials in the polishing test. The accelerated polishing test method of the bituminous mixture specimen comprises a pavement material and a polished material which are independent of each other, wherein the pavement material is rubbed with the polished material by a traction part. The accelerated polishing test method of the bituminous mixture specimen is characterized in that the traction force of the traction part is detected in the process of implementing rubbing, and the anti-skid and the abrasion resistance of the materials are evaluated according to rubbing time and the variable quantity of the traction force in the test process. By implementing the evaluation, the antiskid and abrasion resistance of the materials are quantified by virtue of variation of the traction force in a fixed range, and the logic relationship between the variable quantity of the traction force and the antiskid and abrasion resistance of the materials is established so that technicians can understand the relevant performance of the materials accurately, conveniently and intuitively, and obvious technical significance is realized.
Description
technical field [0001] The present invention relates to a method for analyzing or evaluating materials by means of determining their physical properties. Background technique [0002] The evaluation index of pavement anti-skid performance is mainly divided into two aspects: current anti-skid performance and anti-skid durability. The measurement method and equipment of the evaluation index of pavement surface skid resistance directly determine the accuracy, representativeness and work efficiency of the evaluation, and also affect the evaluation of the pavement performance. In view of the principle that personal safety is the first priority in road use management, high-speed driving of vehicles puts forward strict requirements on the anti-skid safety of road surfaces. The important technical index reflecting the anti-skid ability of pavement is the value of friction coefficient of pavement, so how to measure and evaluate the value of friction coefficient of pavement truly and...
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IPC IPC(8): G01N19/02
Inventor 谭巍李菁若唐平祥董瑞常谢忠王火明龙丽琴
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST