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Toughening Mechanisms in Quasi-Brittle Materials (Paperback, Softcover reprint of the original 1st ed. 1991)
Loot Price: R1,685
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Toughening Mechanisms in Quasi-Brittle Materials (Paperback, Softcover reprint of the original 1st ed. 1991)
Series: NATO Science Series E:, 195
Expected to ship within 10 - 15 working days
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A variety of ceramic materials has been recently shown to exhibit
nonlinear stress strain behavior. These materials include
transformation-toughened zirconia which undergoes a stress-induced
crystallographic transformation in the vicinity of a propagating
crack, microcracking ceramics, and ceramic-fiber reinforced ceramic
matrices. Since many of these materials are under consideration for
structural applications, understanding fracture in these
quasi-brittle materials is essential. Portland cement concrete is a
relatively brittle material. As a result mechanical behavior of
concrete, conventionally reinforced concrete, prestressed concrete
and fiber reinforced concrete is critically influenced by crack
propagation. Crack propagation in concrete is characterized by a
fracture process zone, microcracking, and aggregate bridging. Such
phenomena give concrete toughening mechanisms, and as a result, the
macroscopic response of concrete can be characterized as that of a
quasi-brittle material. To design super high performance cement
composites, it is essential to understand the complex fracture
processes in concrete. A wide range of concern in design involves
fracture in rock masses and rock structures. For example,
prediction of the extension or initiation of fracture is important
in: 1) the design of caverns (such as underground nuclear waste
isolation) subjected to earthquake shaking or explosions, 2) the
production of geothermal and petroleum energy, and 3) predicting
and monitoring earthquakes. Depending upon the grain size and
mineralogical composition, rock may also exhibit characteristics of
quasi-brittle materials."
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