细集料棱角性对沥青混合料性能的影响.pdf

30 3 Vol. 30 No. 3 2002 3 JOU NAL OF TONGJI UNIVE SITY Mar. 2002 韩海峰, 吕伟民 ( , 200092) : , ( F FAA) ., F FAA. F FAA ,F FAA . : ; ; ; ; ; : TU 528.42 : A : 0253- 374X(2002) 03- 0302- 05 Effect of Fine Aggregate Angularity on Hot- mix Asphalt Properties H A N H ai - f eng , L U Wei - mi n (Department of oad and Traffic Engineering,Tongji University, Shanghai 200092, China) Abstract: By analyzing experimental data,the paper discussed how asphalt content,volumeproperty, moisture susceptibility and rutting performancewere influenced by thefine aggregate angularity(F FAA) .T he conclusion was drawn that there are no notable linear relation between fine aggregate angularity and each of the above- mentioned properties. In addition, F FAA alone may not be adequate to assess the quality of the fine aggregate. Key words: hot - mix asphalt; fine aggregate angularity; mass fraction of asphalt; voids in mineral aggre- gate; moisture susceptibility; rutting performance ( F FAA) .Superpave , [1] , [2] . ,,FFAA , FFAA. ,F FAA, F FAA . 1 , , F FAA , F FAA .[3] , 1; [3] 2; 3 . Superpave . N design = 96; 7 d39 e . 3~ 10 , (P ESAL= 80 kN) . 4% , 4. : 2001- 08- 08 : ( 1974- ) , , , . 3 , : 3 03 1 2 Tab.1 Material type and physical index about aggregate Tab.2 Physical index formix test F FAA/ F FAA/