Civil Engineering MaterialsThis book deals with properties, applications and analysis of important materials of construction/civil engineering. It offers full coverage of how materials are made or obtained, their physical properties, their mechanical properties, how they are used in construction, how they are tested in the lab, and their strength characteristics--information that is essential for material selection and elementary design. Contains illustrative examples and tables and figures from professional organizations. KEY TOPICS: Considers all common materials of civil engineering/construction--and looks at each in depth: e.g., physical properties, mechanical properties, code provisions, methods of testing, quality control, construction procedures, and material selection. Discusses laboratory testing procedures for selected tests--provides step-by-step descriptions of laboratory test procedures to determine properties of materials. All test procedures are based on relevant ASTM specification. MARKET: For Civil Engineers, Construction Engineers, Architects, and Agricultural Engineers. |
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... semiconductor . Insulating Materials . Materials that are provided for sound , thermal ( heat ) , or electrical insulation are called insulating materials . The spread of molecular move- ment through bodies that are in direct contact ...
... Semiconductors . Conduction of electricity in materials is caused by the motion of electrons . Electrons can be visualized as particles that carry charge , and are commonly called charge carriers . The conduction of electricity improves ...
... semiconductors , the energy levels required for the electrons to move at a higher speed do not exist at normal voltage gradients . As the electrons cannot increase their velocity , no current is produced , making these materials poor ...