摘要
针入度指数 PI和当量软化点 T80 0 是中国评价沥青感温性的指标。选取四种常规沥青 ,在两种试验条件下测量了五个温度的针入度 ,回归了四种不同温度组合的 PI值和 T80 0 ,讨论了影响 PI值和 T80 0 的一些因素 ;同时还将 T80 0 与软化点、美国 SHRP的 PG分级高温指标 G*/sinδ进行了对比。最后对根据“八五”
In China, penetration index PI and equivalent softening point T 800 are utilized to evaluate the temperature susceptibility of asphalt. The penetration of four kinds of asphalt at five kinds of temperature is measured under two test conditions. PI and T 800 in four combinations of five kinds of temperature are obtained through regression,and their influenced factors are discussed.Moreover,T 800 and softening point are compared to G */ sin δ,high thermal index in PG gradation of SHRP. According to recommendation of asphalt grade criterion in the Eighth Five year National Plan,high thermal grade of four kinds of asphalt is analyzed. 7 tabs,4 figs,2 refs.
出处
《交通运输工程学报》
EI
CSCD
2002年第2期23-26,66,共5页
Journal of Traffic and Transportation Engineering
