Abstract: The development of nanotechnology for civil engineering application is still in its infancy; however, the main benefits and barriers allow the utilization of nanotechnology in civil engineering to be explored. Advances in technology demand new materials with superior combinations of light weight, high performance, affordability, and versatility. This promotes the development of functional nanomaterials which integrate at least one other function beyond the mechanical aspect. Functional nanomaterials can be designed by integrating thermal, electrical, magnetic, optical, mechanical and possibly other functionalities to provide a unique combination of the individual capabilities, and much research efforts have been devoted in recent years to this advancement.
Abstract: Continuous development of new high performance materials is a driving force for the innovation and sustainability of construction industry. In recent years, many new categories of construction materials have emerged which facilitate many possibilities to improve the sustainability of the concrete structures from various perspectives. Such materials involved ultra-high performance concrete, high performance fiber-reinforced cementitious composites, fiber-reinforced polymer (FRP) composites, 3D printing concrete, geopolymer concrete and so on. The combined use of these different types of innovative materials in an optimal way may pave a cost-effective solution to the economic, social and environmental sustainability of concrete structures. This lecture presents a summary of the recent research activities in the author’s group on the development of new construction materials and structural systems. The contents to be reported include: (1) use of high-performance fiber reinforced polymer (FRP) composites; (2) development of ultra-high performance fiber-reinforced cementitious composites; (3) development of multi-functional coating for surface protection and energy saving of building envelopes; (4) geopolymer cement for prefabricated construction and 3D printing. The possibility to combine these developments in prefabricated concrete structures is especially discussed.