SCIENCE AND TECHNOLOGY OF MATERIALS
Learning outcomes of the course unit
The course deals with the applications of the fundamentals of Chemistry in the use of civil engineering materials. It presents a variety of building materials, in particular cements and concretes, metallic and polymeric materials, and correlate their chemicophysical nature with their mechanical, and processing properties for explaining their behaviour in service.
General and Inorganic Chemistry, fundamentals of Organic Chemistry
Course contents summary
Crystalline and amorphous materials. Engineering materials: metals, ceramic materials, polymeric and composite materials. Mechanical, thermal and electrical properties of materials and tests for their characterization.
-Connection between microstructure and properties. Principal metallic crystal structures. Metallic solid solutions. Crystal lattice defects.
-Heterogeneous equilibria. Binary phase diagrams.
-Burnt and hydrated lime; plaster of paris. Hydraulic lime. Portland cement. Manufacture, hydration processes of Portland cement. Natural and man-made pozzolana, fly ash, silica fume; blast furnace slag. Portland-pozzolana cement, slag cement. Types of Portland cement. Technical tests on cement. Aluminate cement. Fine and coarse aggregates. Cement mortar and concrete: properties and tests (time of setting, consistency or workability, bleeding). Admixture for concrete. Lightweight and heavy concretes. Fiber reinforced concretes and polymer impregnated concretes. Shrinkage, creep, compressive strength of concrete. Mix-design of concrete. Hygrothermic treatment of concrete. Concrete degradation.
-Ceramic materials for buildings (bricks, gres, porcelain).
-Engineering plastics. Polymerization reactions for thermoplastics. Thermosetting plastics: chemistry and properties. Polyethylenes, polypropylenes, polyvinylchloride, polymethylmethacrylate, acrylonitrile, polystyrene, polyesters, phenol-formaldehyde resins, epoxy resins, polyamides, silicones, elastomers. Properties, manifacture and applications in modern buildings. Degradation mechanism.
-Composite materials: properties and applications in civil engineering.
-Metallic materials. Cast irons and steels: production and properties. The iron-iron carbide phase diagram. White, grey, malleable and nodular cast irons Heat treatment of steels (hardening, softening, annealing, normalizing). Standard classification and codification of steels. Alloying elements in steel, stainless steels, steels for tool.
Electrochemical corrosion of metals. Galvanic cells. Intergranular corrosion. Stress corrosion. Corrosion control and prevention.
M. LUCCO BORLERA, C. BRISI: "Tecnologia dei materiali e Chimica Applicata" Levrotto e Bella, Torino, 1992.
W.F. SMITH: "Principles of materials science and engineering" McGraw-Hill, 1995.
L. BERTOLINI, P. PEDEFERRI: "Tecnologia dei materiali. Leganti e calcestruzzo" CittàStudiEdizioni
V. ALUNNO ROSSETTI: 'Il calcestruzzo:Materiali e Tecnologia' McGraw-Hill, 2007.