›› 2009, Vol. 30 ›› Issue (7): 1960-1966.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Measurement of breakage energy of coarse granular aggregates

JIA Yu-feng1, CHI Shi-chun1, YANG Jun2, LIN Gao1   

  1. 1. State Key Laboratory of the Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China; 2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
  • Received:2007-12-13 Online:2009-07-10 Published:2011-03-10

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Abstract:

Particle breakage of coarse granular aggregates changes its structure directly, influencing its dilatancy and friction angle. In the course of shearing, normal stress and shear stress do work on volume strain and shear strain. This energy is transformed into particle elastic energy storage, particle friction energy consumption, work done by particle dilatancy and particle breakage energy. The accurate measurement on breakage energy of coarse granular aggregates in the course of shearing aims that it provides a method to analyze the particle breakage influence on constitutive relation in the perspective of energy, creating conditions for development of coarse granular aggregates constitutive relations considering particle breakage. The breakage energy of coarse granular aggregates in the course of shearing is calculated by analyzing the results of the coarse granular aggregates in triaxial compression test. The results indicate that the breakage energy during triaxial tests is mainly influenced by confining stress and friction coefficient.

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  • TU 411
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