Civil Engineering Materials
This 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. 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. For Civil Engineers, Construction Engineers, Architects, and Agricultural Engineers.
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8.1.1 Types of Plastics Plastics (or polymer resins) fall into two classifications: •
Thermoplastics • Thermosets A thermoplastic material is a polymer that softens
and melts gradually when heated and can be reshaped when still warm.
Thermoplastic resins do not undergo permanent change on reheating. They
soften and melt when heated, and resolidify upon cooling, like wax or butter. The
molded shapes are retained upon cooling. Any object made with thermoplastics
TABLE 8.2 PROPERTIES OF SELECTED PLASTIC Coefficient of Polyethylene is
also a common thermoplastic, with a specific gravity of about 0.92. It is a tough,
weather-resisting plastic and is durable. The resistance to moisture of ...