Page 168 - Mechanics of Asphalt Microstructure and Micromechanics

160 Ch a p t e r Fiv e

The thickness of the lines shows the magnitude of the forces. Clearly, tensile forces are
distributed in a very complicated pattern between the contacts.

5.6.4 Anisotropy
From Section 5.3.9, it is clear that even if the two constituents are isotropic, the thus
formed mixture is no longer isotropic. The anisotropic property may have significant
implications to pavement analysis and design. Chapter 12 will focus on the anisotropic
properties of AC.

Suggested Readings
Sections 5.2 and 5.3 are based on the teaching notes of the author. These notes are pre-
pared following the presentations from two excellent books by Nemat-Nasser and Hori
(1999) and Qu and Ckerkaoui (2006). If readers need more backgrounds, please read
these books. For convenience and connections, the symbols adopted in these two sec-
tions are consistent with those used in these books. The author would like to take this
opportunity to express his appreciations of Dr. Qu for his inspiring lectures that at-
tracted him into the research and study of micromechanics.

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