共查询到20条相似文献,搜索用时 31 毫秒
1.
To analyze influencing factors and evaluation method of low-temperature performance of porous asphalt mixture,first,three kinds of modified binder were chosen as original,thin film aging and pressure aging samples for customary index test and bending beam rheometer (BBR) test at -12 ℃ to evaluate low-temperature performance of these modified binders Then,evaluation of the low-temperature anti?cracking performance of different kinds of porous asphalt mixture was made by thermal stress restrained sample test (TSRST) At the sam
e time,the result of abovementioned TSRST were compared with the TSRST result of
samples of the porous asphalt mixtures after long?term aging to evaluate the influence of
aging on low-temperature performance of porous asphalt mixtures The results show that (1) TSRST result of porous asphalt mixtures coincides with creep stiffnesses of BBR test of modified binders; (2) the fracture temperatures of the porous asphalt mixtures increase and their fracture stresses decrease after aging; (3) the fracture stresses of porous asphalt mixtures are just one-third of those of dense?gradation asphalt mixtures while the fracture temperatures almost the same,which indicates that their low?temperature performances are almost the same 相似文献
3.
8.
《JSAE Review》1995,16(2):217
9.
10.
11.
12.
13.
14.
S. Kajiwara 《International Journal of Automotive Technology》2014,15(1):65-70
The purpose of this study was to evaluate the mental workload of increasing driving speed, from 60 km/h to 180 km/h, when operating a driving simulator. The evaluation, based on changes in facial temperature and electrodermal activity, showed that the difference between nose and forehead temperature increased, that the skin potential level decreased, and that the skin conductance level increased. Monitoring facial temperature and electrodermal activity were both found to be effective in evaluating the mental workload involved. 相似文献
18.
19.