›› 2009, Vol. 30 ›› Issue (S1): 99-102.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of segregation phenomenon of mixture storage hopper

QIN Wen, SHA Ai-min, HU Qian   

  1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China
  • Received:2009-04-20 Online:2009-08-10 Published:2011-03-16

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Abstract:

Aiming at understanding the segregation phenomena that may occur while the mixture is discharged from storage bin, small scale simulation test is adopted to observe the discharge process and analyze changes of particle composition. The results show that segregation phenomenon of mixture in storage bin at the time of discharge is mainly due to infiltration effect of granular material. During the discharge process, the fine materials infiltrate through the voids in the structure with the effect of the self-gravity, and aggregate segregation occurres. Different aggregate size ratios, distribution widths, average particle sizes and other factors result in different void structures of aggregate, which give birth to different extent of infiltration of fine materials. Thus, the degree of aggregate segregation varied.

Key words: highway engineering, asphalt mixture, storage bin, segregation, granular material

CLC Number: 

  • U 414
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